CHANGELOG.md

# Change Log

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Top level categories:

- Major changes
- Added/New Features
- Changes
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- Performance
- Documentation
- Dependency Updates
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Bottom level categories:

- General
- naga
- Validation
- DX12
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-->

## Unreleased

### Major changes

#### Optional vertex buffer slots

This allows gaps in `VertexState`'s `buffers` and adds support for unbinding vertex buffers, bringing us in compliance with the WebGPU spec. As a result of this, `VertexState`'s `buffers` field now has type of `&[Option<VertexBufferLayout>]`. To migrate, wrap vertex buffer layouts in `Some`:

```diff
  let vertex_state = wgpu::VertexState {
      module: &vs_module,
      entry_point: Some("vs_main"),
      compilation_options: wgpu::PipelineCompilationOptions::default(),
      buffers: &[
-         &vertex_buffer_layout
+         Some(&vertex_buffer_layout)
      ],
  };
```

By @teoxoy in [#9351](https://github.com/gfx-rs/wgpu/pull/9351).

#### Integer shader I/O no longer defaults to `@interpolate(flat)`

To align with shading language specifications, `naga` no longer assumes that integer-typed shader I/O should have `flat` interpolation, i.e., should not be interpolated. Even though flat interpolation is the only choice for integer I/O, it must be still specified explicitly.

WGSL:

```diff
 struct FragmentInput {
     @location(0) tex_coord: vec2<f32>,
-    @location(1) index: i32,
+    @location(1) @interpolate(flat) index: i32,
 }
```

GLSL:

```diff
-layout(location = 1) in int index;
+layout(location = 1) flat in int index;
```

By @andyleiserson in [#9321](https://github.com/gfx-rs/wgpu/pull/9321).

### Added/New Features

#### General

- Implement `i16`/`u16` 16-bit integer support in WGSL shaders, gated behind `Features::SHADER_I16` and `enable wgpu_int16;`. Supported on Vulkan, Metal, and DX12 (SM 6.2+). By @JMS55 in [#9412](https://github.com/gfx-rs/wgpu/pull/9412).
- BLAS support for procedural AABB geometry (`BlasGeometrySizeDescriptors::AABBs`, `BlasAabbGeometry`, and related descriptors). By @dylanblokhuis in [#9290](https://github.com/gfx-rs/wgpu/pull/9290)
- Added "limit bucketing" functionality which can adjust adapter limits and features to match one of several pre-defined buckets. This is controlled by the new `apply_limit_buckets` member in `RequestAdapterOptions`, which is `false` by default. By @andyleiserson in [#9119](https://github.com/gfx-rs/wgpu/pull/9119).
- Fix missing dependency feature activations when building wgpu-hal with gles/dx12 in isolation. By @wumpf in [#9325](https://github.com/gfx-rs/wgpu/pull/9325)
- Make `wgpu_types::texture::format::TextureChannel` accessible as `wgpu::TextureChannel`. By @TornaxO7 in [#9394](https://github.com/gfx-rs/wgpu/pull/9349).
- Add support for `per_vertex` in Metal and DX12, as well as some validation for `per_vertex`, and a new enable extension, `wgpu_per_vertex`. By @inner-daemons in [#9219](https://github.com/gfx-rs/wgpu/pull/9219).
- Add `ComputePass` version of `CommandEncoder::transition_resources` that allows intra-pass transitions. By @wingertge in [#9371](https://github.com/gfx-rs/wgpu/pull/9371).

#### Metal

- Unconditionally enable `Features::CLIP_DISTANCES`. By @ErichDonGubler in [#9270](https://github.com/gfx-rs/wgpu/pull/9270).
- Added full support for mesh shaders, including in WGSL shaders. By @inner-daemons in [#8739](https://github.com/gfx-rs/wgpu/pull/8739).
- Fixed structure field names incorrectly ignoring reserved keywords in the Metal (MSL) backend. By @39ali [#9379](https://github.com/gfx-rs/wgpu/pull/9379).

#### GLES

- Added support for GLSL passthrough. By @inner-daemons in [#9064](https://github.com/gfx-rs/wgpu/pull/9064).

#### DX12

- Added support for mesh shaders in naga's HLSL writer, completing DX12 support for mesh shaders. By @inner-daemons in [#8752](https://github.com/gfx-rs/wgpu/pull/8752).

#### Vulkan

- Add `vulkan::Device::texture_from_dmabuf_fd()` for importing DMA-buf textures on Linux, with `VULKAN_EXTERNAL_MEMORY_FD` and `VULKAN_EXTERNAL_MEMORY_DMA_BUF` feature flags. By @TODO in [#9412](https://github.com/gfx-rs/wgpu/pull/9412).
- Add support for RawWindowHandle::Drm on unix, conditional on the `"drm"` feature.
  - DRM support by @rectalogic in [#9182](https://github.com/gfx-rs/wgpu/pull/9182).
  - Conditional compilation by @jimblandy in [#9390](https://github.com/gfx-rs/wgpu/pull/9390)
- Fixed alignment and MatrixStride for mat2x2 in SPIR-V uniform blocks. By @39ali [#9369](https://github.com/gfx-rs/wgpu/pull/9369).

#### naga

- spirv-out ray tracing pipelines. By @Vecvec in [#9085](https://github.com/gfx-rs/wgpu/pull/9085).

### Changes

#### General

- `SurfaceTexture::present()` has been replaced by `Queue::present(surface_texture)`. By @inner-daemons and @atlv24 in [#9361](https://github.com/gfx-rs/wgpu/pull/9361).
- `Features::CLIP_DISTANCE`, `naga::Capabilities::CLIP_DISTANCE`, and `naga::BuiltIn::ClipDistance` have been renamed to `CLIP_DISTANCES` and `ClipDistances` (viz., pluralized) as appropriate, to match the WebGPU spec. By @ErichDonGubler in [#9267](https://github.com/gfx-rs/wgpu/pull/9267).
- Added more granular limits for mesh shaders. By @inner-daemons in [#8739](https://github.com/gfx-rs/wgpu/pull/8739).
- Added new `InvalidWorkgroupSizeError`, which is now used by `DrawError::InvalidGroupSize` and `StageError::InvalidWorkgroupSize`. By @andyleiserson in [#9357](https://github.com/gfx-rs/wgpu/pull/9357).
- Zero-size `Queue::write_buffer` now returns an error if the offset is invalid or the buffer lacks `COPY_DST`. By @39ali in [#9374](https://github.com/gfx-rs/wgpu/pull/9374).
- `Buffer::get_mapped_range` and variants now return `Result<_, MapRangeError>>` instead of panicking, in line with WebGPU spec. By @atlv24 in [#9281](https://github.com/gfx-rs/wgpu/pull/9281).
- Passthrough shaders now require a list of entry points when being created. by @inner-daemons in [#9064](https://github.com/gfx-rs/wgpu/pull/9064).
- BREAKING: The `dispatch` and `dispatch_indirect` methods on pass and bundle encoders have been renamed to `dispatch_workgroups` and `dispatch_workgroups_indirect`, respectively, to match the WebGPU spec. By @ErichDonGubler in [#9362](https://github.com/gfx-rs/wgpu/pull/9362).
- `LoadOp::DontCare` can no longer be deserialized, and the `LoadOpDontCare` token no longer implements `Default`. This ensures that `DontCare` can only be used with `unsafe`, as intended. By @kpreid in [#9428](https://github.com/gfx-rs/wgpu/pull/9428).
- Minor changes to various error enums to support improved validation. By @andyleiserson in [#9357](https://github.com/gfx-rs/wgpu/pull/9357), [#9363](https://github.com/gfx-rs/wgpu/pull/9363), and [#9425](https://github.com/gfx-rs/wgpu/pull/9425):
  - Added new `InvalidWorkgroupSizeError`, which is now used by `DrawError::InvalidGroupSize` and `StageError::InvalidWorkgroupSize`.
  - Added `BuildAccelerationStructureError` variant `OffsetLimitedTo4GB` and changed `IndirectBufferOverrun` to contain offset and size rather than start and end offsets.
  - `IndexFormat::byte_size` now returns `u32` instead of `usize`.

#### Validation

- Add clip distances validation for `maxInterStageShaderVariables`. By @ErichDonGubler in [#8762](https://github.com/gfx-rs/wgpu/pull/8762). This may break some existing programs, but it compiles with the WebGPU spec.
- Bring immediates in line with webgpu spec. By @atlv24 in [#9280](https://github.com/gfx-rs/wgpu/pull/9280).

#### DX12

- Prefix `FeatureLevel` and `ShaderModel` enum variants with `V` instead of `_`. By @teoxoy in [#9337](https://github.com/gfx-rs/wgpu/pull/9337).

#### naga

- Switched from using an `intersector` to using an `intersection_query` on metal so AABBs and non-opaque triangles can be handled. By @Vecvec in [#9304](https://github.com/gfx-rs/wgpu/pull/9304).

### Bug Fixes

#### General

- Fix `SYNC-HAZARD-WRITE-AFTER-PRESENT` on Vulkan when a surface texture is presented without being rendered to. By @inner-daemons and @atlv24 in [#9361](https://github.com/gfx-rs/wgpu/pull/9361).
- Fix incorrect checks for dynamic binding bounds when calling an encoder's `set_bind_group` in passes and bundles. By @ErichDonGubler in [#9308](https://github.com/gfx-rs/wgpu/pull/9308).

#### naga

- Fixed atomic load and store operations being incorrectly generated as non-atomic memory accesses in GLSL and HLSL. By @CldStlkr in [#9242](https://github.com/gfx-rs/wgpu/pull/9242).
- Fixed overflow detection and argument domain validation for `acosh`, `length`, `normalize`, and `pow` in constant evaluation. By @ecoricemon in [#9249](https://github.com/gfx-rs/wgpu/pull/9249).
- Naga no longer allows derivative operations on `f16`. WGSL does not currently allow this, although [it may be added in the future](https://github.com/gpuweb/gpuweb/issues/5482). By @andyleiserson in [#9154](https://github.com/gfx-rs/wgpu/pull/9154).
- Disallow direct access to atomic variables in WGSL front-end (e.g. `let x = myAtomic;`). By @ecoricemon in [#9262](https://github.com/gfx-rs/wgpu/pull/9262).
- Fixed handling of unterminated block comments. By @BKDaugherty in [#9356](https://github.com/gfx-rs/wgpu/pull/9356).
- Enforce that `@must_use` appear only on function declarations. By @dnsn021 in [#9367](https://github.com/gfx-rs/wgpu/pull/9367).
- Fix typo in `naga::back::msl::Error::UnsupportedWritable*` variant names. By @ErichDonGubler in [#9376](https://github.com/gfx-rs/wgpu/pull/9376).
- Added support for `enable wgpu_binding_array;`. By @39ali in [#9298](https://github.com/gfx-rs/wgpu/pull/9298).

#### Vulkan

- Fixed `SHADER_I16` not enabling `storage_buffer16_bit_access` or `storage_input_output16`, causing Vulkan validation errors when using 16-bit integers in buffers. By @JMS55 in [#9412](https://github.com/gfx-rs/wgpu/pull/9412).
- Fixed validation errors when frames take longer than the specified swapchain acquire timeout. By @atlv24 in [#9405](https://github.com/gfx-rs/wgpu/pull/9405).
- Fixed limits on Mesa's Honeykrisp / Asahi Linux. By @im-0 in [#9393](https://github.com/gfx-rs/wgpu/pull/9393).

#### dx12

- Fixed use of a texture view without `TextureUsage::TEXTURE_BINDING` as a read-only depth attachment. By @andyleiserson in [#9346](https://github.com/gfx-rs/wgpu/pull/9346).
- Fixed a `debug_assert` during stride validation for indirect multi draw. By @kristoff3r in [#9332](https://github.com/gfx-rs/wgpu/pull/9332)

#### Metal

- Fix crash on fence creation when running in a MacOS Seatbelt sandbox. By @wumpf in [#9415](https://github.com/gfx-rs/wgpu/pull/9415)

### Dependency Updates

#### WebGPU

- Upgrade vendored `wasm-bindgen` WebGPU bindings to 0.2.115 and adapt the `webgpu` backend to the new API. `ExternalImageSource::VideoFrame` no longer requires `--cfg=web_sys_unstable_apis`, as `web_sys::VideoFrame` is now stable. The GLES backend still requires the cfg to upload `VideoFrame`s, since `glow` still needs to adapt. By @evilpie in [#9090](https://github.com/gfx-rs/wgpu/pull/9090).

## v29.0.1 (2026-03-26)

This release includes `wgpu-core`, `wgpu-hal` and `wgpu-types` version `29.0.1`. All other crates remain at their previous versions.

### Bug Fixes

#### General

- Fix limit comparison logic for `max_inter_stage_shader_variables`. By @ErichDonGubler in [#9264](https://github.com/gfx-rs/wgpu/pull/9264).

#### Metal

- Added guards to avoid calling some feature detection methods that are not implemented on `CaptureMTLDevice`. By @andyleiserson in [#9284](https://github.com/gfx-rs/wgpu/pull/9284).
- Fix a regression where buffer limits were too conservative. This comes at the cost of non-compliant WebGPU limit validation. A future major release will keep the relaxed buffer limits on native while allowing WebGPU-mandated validation to be opted in. See [#9287](https://github.com/gfx-rs/wgpu/issues/9287).

#### GLES / OpenGL

- Fix texture height initialized incorrectly in `create_texture`. By @umajho in [#9302](https://github.com/gfx-rs/wgpu/pull/9302).

#### Validation

- Don't crash in the `Display` implementation of `CreateTextureViewError::TooMany{MipLevels,ArrayLayers}` when their base and offset overflow. By @ErichDonGubler in [#8808](https://github.com/gfx-rs/wgpu/pull/8808).

## v29.0.0 (2026-03-18)

### Major Changes

#### `Surface::get_current_texture` now returns `CurrentSurfaceTexture` enum

`Surface::get_current_texture` no longer returns `Result<SurfaceTexture, SurfaceError>`.
Instead, it returns a single `CurrentSurfaceTexture` enum that represents all possible outcomes as variants.
`SurfaceError` has been removed, and the `suboptimal` field on `SurfaceTexture` has been replaced by a dedicated `Suboptimal` variant.

```rust
match surface.get_current_texture() {
    wgpu::CurrentSurfaceTexture::Success(frame) => { /* render */ }
    wgpu::CurrentSurfaceTexture::Timeout
      | wgpu::CurrentSurfaceTexture::Occluded => { /* skip frame */ }
    wgpu::CurrentSurfaceTexture::Outdated
      | wgpu::CurrentSurfaceTexture::Suboptimal(frame) => { /* reconfigure surface */ }
    wgpu::CurrentSurfaceTexture::Lost => { /* reconfigure surface, or recreate device if device lost */ }
    wgpu::CurrentSurfaceTexture::Validation => {
        /* Only happens if there is a validation error and you
           have registered a error scope or uncaptured error handler. */
    }
}
```

By @cwfitzgerald, @Wumpf, and @emilk in [#9141](https://github.com/gfx-rs/wgpu/pull/9141) and [#9257](https://github.com/gfx-rs/wgpu/pull/9257).

#### `InstanceDescriptor` initialization APIs and display handle changes

A display handle represents a connection to the platform's display server (e.g. a Wayland or X11 connection on Linux). This is distinct from a window — a display handle is the system-level connection through which windows are created and managed.

`InstanceDescriptor`'s convenience constructors (an implementation of `Default` and the static `from_env_or_default` method) have been removed. In their place are new static methods that force recognition of whether a display handle is used:

- `new_with_display_handle`
- `new_with_display_handle_from_env`
- `new_without_display_handle`
- `new_without_display_handle_from_env`

If you are using `winit`, this can be populated using `EventLoop::owned_display_handle`.

```diff
- InstanceDescriptor::default();
- InstanceDescriptor::from_env_or_default();
+ InstanceDescriptor::new_with_display_handle(Box::new(event_loop.owned_display_handle()));
+ InstanceDescriptor::new_with_display_handle_from_env(Box::new(event_loop.owned_display_handle()));
```

Additionally, `DisplayHandle` is now optional when creating a surface if a display handle was already passed to `InstanceDescriptor`. This means that once you've provided the display handle at instance creation time, you no longer need to pass it again for each surface you create.

By @MarijnS95 in [#8782](https://github.com/gfx-rs/wgpu/pull/8782)

#### Bind group layouts now optional in `PipelineLayoutDescriptor`

This allows gaps in bind group layouts and adds full support for unbinding, bring us in compliance with the WebGPU spec. As a result of this `PipelineLayoutDescriptor`'s `bind_group_layouts` field now has type of `&[Option<&BindGroupLayout>]`. To migrate wrap bind group layout references in `Some`:

```diff
  let pl_desc = wgpu::PipelineLayoutDescriptor {
      label: None,
      bind_group_layouts: &[
-         &bind_group_layout
+         Some(&bind_group_layout)
      ],
      immediate_size: 0,
  });
```

By @teoxoy in [#9034](https://github.com/gfx-rs/wgpu/pull/9034).

#### MSRV update

`wgpu` now has a new MSRV policy. This release has an MSRV of **1.87**. This is lower than v27's 1.88 and v28's 1.92. Going forward, we will only bump wgpu's MSRV if it has tangible benefits for the code, and we will never bump to an MSRV higher than `stable - 3`. So if stable is at 1.97 and 1.94 brought benefit to our code, we could bump it no higher than 1.94. As before, MSRV bumps will always be breaking changes.

By @cwfitzgerald in [#8999](https://github.com/gfx-rs/wgpu/pull/8999).

#### `WriteOnly`

To ensure memory safety when accessing mapped GPU memory, `MapMode::Write` buffer mappings (`BufferViewMut` and also `QueueWriteBufferView`) can no longer be dereferenced to Rust `&mut [u8]`. Instead, they must be used through the new pointer type `wgpu::WriteOnly<[u8]>`, which does not allow reading at all.

`WriteOnly<[u8]>` is designed to offer similar functionality to `&mut [u8]` and have almost no performance overhead, but you will probably need to make some changes for anything more complicated than `get_mapped_range_mut().copy_from_slice(my_data)`; in particular, replacing `view[start..end]` with `view.slice(start..end)`.

By @kpreid in [#9042](https://github.com/gfx-rs/wgpu/pull/9042).

#### Depth/stencil state changes

The `depth_write_enabled` and `depth_compare` members of `DepthStencilState` are now optional, and may be omitted when they do not apply, to match WebGPU.

`depth_write_enabled` is applicable, and must be `Some`, if `format` has a depth aspect, i.e., is a depth or depth/stencil format. Otherwise, a value of `None` best reflects that it does not apply, although `Some(false)` is also accepted.

`depth_compare` is applicable, and must be `Some`, if `depth_write_enabled` is `Some(true)`, or if `depth_fail_op` for either stencil face is not `Keep`. Otherwise, a value of `None` best reflects that it does not apply, although `Some(CompareFunction::Always)` is also accepted.

There is also a new constructor `DepthStencilState::stencil` which may be used instead of a struct literal for stencil operations.

Example 1: A configuration that does a depth test and writes updated values:

```diff
 depth_stencil: Some(wgpu::DepthStencilState {
     format: wgpu::TextureFormat::Depth32Float,
-    depth_write_enabled: true,
-    depth_compare: wgpu::CompareFunction::Less,
+    depth_write_enabled: Some(true),
+    depth_compare: Some(wgpu::CompareFunction::Less),
     stencil: wgpu::StencilState::default(),
     bias: wgpu::DepthBiasState::default(),
 }),
```

Example 2: A configuration with only stencil:

```diff
 depth_stencil: Some(wgpu::DepthStencilState {
     format: wgpu::TextureFormat::Stencil8,
-    depth_write_enabled: false,
-    depth_compare: wgpu::CompareFunction::Always,
+    depth_write_enabled: None,
+    depth_compare: None,
     stencil: wgpu::StencilState::default(),
     bias: wgpu::DepthBiasState::default(),
 }),
```

Example 3: The previous example written using the new `stencil()` constructor:

```rust
depth_stencil: Some(wgpu::DepthStencilState::stencil(
    wgpu::TextureFormat::Stencil8,
    wgpu::StencilState::default(),
)),
```

#### D3D12 Agility SDK support

Added support for loading a specific [DirectX 12 Agility SDK](https://devblogs.microsoft.com/directx/directx12agility/) runtime via the [Independent Devices API](https://devblogs.microsoft.com/directx/d3d12-independent-devices/). The Agility SDK lets applications ship a newer D3D12 runtime alongside their binary, unlocking the latest D3D12 features without waiting for an OS update.

Configure it programmatically:

```rust
let options = wgpu::Dx12BackendOptions {
    agility_sdk: Some(wgpu::Dx12AgilitySDK {
        sdk_version: 619,
        sdk_path: "path/to/sdk/bin/x64".into(),
    }),
    ..Default::default()
};
```

Or via environment variables:

```
WGPU_DX12_AGILITY_SDK_PATH=path/to/sdk/bin/x64
WGPU_DX12_AGILITY_SDK_VERSION=619
```

The `sdk_version` must match the version of the `D3D12Core.dll` in the provided path exactly, or loading will fail.

If the Agility SDK fails to load (e.g. version mismatch, missing DLL, or unsupported OS), wgpu logs a warning and falls back to the system D3D12 runtime.

By @cwfitzgerald in [#9130](https://github.com/gfx-rs/wgpu/pull/9130).

#### `primitive_index` is now a WGSL `enable` extension

WGSL shaders using `@builtin(primitive_index)` must now request it with `enable primitive_index;`. The `SHADER_PRIMITIVE_INDEX` feature has been renamed to `PRIMITIVE_INDEX` and moved from `FeaturesWGPU` to `FeaturesWebGPU`. By @inner-daemons in [#8879](https://github.com/gfx-rs/wgpu/pull/8879) and @andyleiserson in [#9101](https://github.com/gfx-rs/wgpu/pull/9101).

```diff
- device.features().contains(wgpu::FeaturesWGPU::SHADER_PRIMITIVE_INDEX)
+ device.features().contains(wgpu::FeaturesWebGPU::PRIMITIVE_INDEX)
```

```wgsl
// WGSL shaders must now include this directive:
enable primitive_index;
```

#### `maxInterStageShaderComponents` replaced by `maxInterStageShaderVariables`

Migrated from the `max_inter_stage_shader_components` limit to `max_inter_stage_shader_variables`, following the latest WebGPU spec. Components counted individual scalars (e.g. a `vec4` = 4 components), while variables counts locations (e.g. a `vec4` = 1 variable). This changes validation in a way that should not affect most programs. By @ErichDonGubler in [#8652](https://github.com/gfx-rs/wgpu/pull/8652), [#8792](https://github.com/gfx-rs/wgpu/pull/8792).

```diff
- limits.max_inter_stage_shader_components
+ limits.max_inter_stage_shader_variables
```

#### Other Breaking Changes

- Use clearer field names for `StageError::InvalidWorkgroupSize`. By @ErichDonGubler in [#9192](https://github.com/gfx-rs/wgpu/pull/9192).

### New Features

#### General

- Added TLAS binding array support via `ACCELERATION_STRUCTURE_BINDING_ARRAY`. By @kvark in [#8923](https://github.com/gfx-rs/wgpu/pull/8923).
- Added `wgpu-naga-bridge` crate with conversions between `naga` and `wgpu-types` (features to capabilities, storage format mapping, shader stage mapping). By @atlv24 in [#9201](https://github.com/gfx-rs/wgpu/pull/9201).
- Added support for cooperative load/store operations in shaders. Currently only WGSL on the input and SPIR-V, METAL, and WGSL on the output are supported. By @kvark in [#8251](https://github.com/gfx-rs/wgpu/issues/8251).
- Added support for per-vertex attributes in fragment shaders. Currently only WGSL input is supported, and only SPIR-V or WGSL output is supported. By @atlv24 in [#8821](https://github.com/gfx-rs/wgpu/issues/8821).
- Added support for no-perspective barycentric coordinates. By @atlv24 in [#8852](https://github.com/gfx-rs/wgpu/issues/8852).
- Added support for obtaining `AdapterInfo` from `Device`. By @sagudev in [#8807](https://github.com/gfx-rs/wgpu/pull/8807).
- Added `Limits::or_worse_values_from`. By @atlv24 in [#8870](https://github.com/gfx-rs/wgpu/pull/8870).
- Added `Features::FLOAT32_BLENDABLE` on Vulkan and Metal. By @timokoesters in [#8963](https://github.com/gfx-rs/wgpu/pull/8963) and @andyleiserson in [#9032](https://github.com/gfx-rs/wgpu/pull/9032).
- Added `Dx12BackendOptions::force_shader_model` to allow using advanced features in passthrough shaders without bundling DXC. By @inner-daemons in [#8984](https://github.com/gfx-rs/wgpu/pull/8984).
- Changed passthrough shaders to not require an entry point parameter, so that the same shader module may be used in multiple entry points. Also added support for metallib passthrough. By @inner-daemons in [#8886](https://github.com/gfx-rs/wgpu/pull/8886).
- Added `Dx12Compiler::Auto` to automatically use static or dynamic DXC if available, before falling back to FXC. By @inner-daemons in [#8882](https://github.com/gfx-rs/wgpu/pull/8882).
- Added support for `insert_debug_marker`, `push_debug_group` and `pop_debug_group` on WebGPU. By @evilpie in [#9017](https://github.com/gfx-rs/wgpu/pull/9017).
- Added support for `@builtin(draw_index)` to the vulkan backend. By @inner-daemons in [#8883](https://github.com/gfx-rs/wgpu/pull/8883).
- Added `TextureFormat::channels` method to get some information about which color channels are covered by the texture format. By @TornaxO7 in [#9167](https://github.com/gfx-rs/wgpu/pull/9167)
- BREAKING: Add `V6_8` variant to `DxcShaderModel` and `naga::back::hlsl::ShaderModel`. By @inner-daemons in [#8882](https://github.com/gfx-rs/wgpu/pull/8882) and @ErichDonGubler in [#9083](https://github.com/gfx-rs/wgpu/pull/9083).
- BREAKING: Add `V6_9` variant to `DxcShaderModel` and `naga::back::hlsl::ShaderModel`. By @ErichDonGubler in [#9083](https://github.com/gfx-rs/wgpu/pull/9083).

#### naga

- Initial wgsl-in ray tracing pipelines. By @Vecvec in [#8570](https://github.com/gfx-rs/wgpu/pull/8570).
- wgsl-out ray tracing pipelines. By @Vecvec in [#8970](https://github.com/gfx-rs/wgpu/pull/8970).
- Allow parsing shaders which make use of `SPV_KHR_non_semantic_info` for debug info. Also removes `naga::front::spv::SUPPORTED_EXT_SETS`. By @inner-daemons in [#8827](https://github.com/gfx-rs/wgpu/pull/8827).
- Added memory decorations for storage buffers: `coherent`, supported on all native backends, and `volatile`, only on Vulkan and GL. By @atlv24 in [#9168](https://github.com/gfx-rs/wgpu/pull/9168).
- Made the following available in `const` contexts; by @ErichDonGubler in [#8943](https://github.com/gfx-rs/wgpu/pull/8943):
  - `naga`
    - `Arena::len`
    - `Arena::is_empty`
    - `Range::first_and_last`
    - `front::wgsl::Frontend::set_options`
    - `ir::Block::is_empty`
    - `ir::Block::len`

#### GLES

- Added `GlDebugFns` option in `GlBackendOptions` to control OpenGL debug functions (`glPushDebugGroup`, `glPopDebugGroup`, `glObjectLabel`, etc.). Automatically disables them on Mali GPUs to work around a driver crash. By @Xavientois in [#8931](https://github.com/gfx-rs/wgpu/pull/8931).

#### WebGPU

- Added support for `insert_debug_marker`, `push_debug_group` and `pop_debug_group`. By @evilpie in [#9017](https://github.com/gfx-rs/wgpu/pull/9017).
- Added support for `begin_occlusion_query` and `end_occlusion_query`. By @evilpie in [#9039](https://github.com/gfx-rs/wgpu/pull/9039).

### Changes

#### General

- Tracing now uses the `.metal` extension for metal source files, instead of `.msl`. By @inner-daemons in [#8880](https://github.com/gfx-rs/wgpu/pull/8880).
- BREAKING: Several error APIs were changed by @ErichDonGubler in [#9073](https://github.com/gfx-rs/wgpu/pull/9073) and [#9205](https://github.com/gfx-rs/wgpu/pull/9205):
  - `BufferAccessError`:
    - Split the `OutOfBoundsOverrun` variant into new `OutOfBoundsStartOffsetOverrun` and `OutOfBoundsEndOffsetOverrun` variants.
    - Removed the `NegativeRange` variant in favor of new `MapStartOffsetUnderrun` and `MapStartOffsetOverrun` variants.
  - Split the `TransferError::BufferOverrun` variant into new `BufferStartOffsetOverrun` and `BufferEndOffsetOverrun` variants.
  - `ImmediateUploadError`:
    - Removed the `TooLarge` variant in favor of new `StartOffsetOverrun` and `EndOffsetOverrun` variants.
    - Removed the `Unaligned` variant in favor of new `StartOffsetUnaligned` and `SizeUnaligned` variants.
    - Added the `ValueStartIndexOverrun` and `ValueEndIndexOverrun` invariants
- The various "max resources per stage" limits are now capped at 100, so that their total remains below `max_bindings_per_bind_group`, as required by WebGPU. By @andyleiserson in [#9118](https://github.com/gfx-rs/wgpu/pull/9118).
- The `max_uniform_buffer_binding_size` and `max_storage_buffer_binding_size` limits are now `u64` instead of `u32`, to match WebGPU. By @wingertge in [#9146](https://github.com/gfx-rs/wgpu/pull/9146).
- The main 3 native backends now report their limits properly. By @teoxoy in [#9196](https://github.com/gfx-rs/wgpu/pull/9196).

#### naga

- Naga and `wgpu` now reject shaders with an `enable` directive for functionality that is not available, even if that functionality is not used by the shader. By @andyleiserson in [#8913](https://github.com/gfx-rs/wgpu/pull/8913).
- Prevent UB from incorrectly using ray queries on HLSL. By @Vecvec in [#8763](https://github.com/gfx-rs/wgpu/pull/8763).
- Added support for dual-source blending in SPIR-V shaders. By @andyleiserson in [#8865](https://github.com/gfx-rs/wgpu/pull/8865).
- Added `supported_capabilities` to all backends. By @inner-daemons in [#9068](https://github.com/gfx-rs/wgpu/pull/9068).
- Updated codespan-reporting to 0.13. By @cwfitzgerald in [#9243](https://github.com/gfx-rs/wgpu/pull/9243).

#### Metal

- Use autogenerated `objc2` bindings internally, which should resolve a lot of leaks and unsoundness. By @madsmtm in [#5641](https://github.com/gfx-rs/wgpu/pull/5641).
- Implements ray-tracing acceleration structures for metal backend. By @lichtso in [#8071](https://github.com/gfx-rs/wgpu/pull/8071).
- Remove mutex for `MTLCommandQueue` because the Metal object is thread-safe. By @andyleiserson in [#9217](https://github.com/gfx-rs/wgpu/pull/9217).

#### deno_webgpu

- Expose the `GPU.wgslLanguageFeatures` property. By @andyleiserson in [#8884](https://github.com/gfx-rs/wgpu/pull/8884).
- `GPUFeatureName` now includes all `wgpu` extensions. Feature names for extensions should be written with a `wgpu-` prefix, although unprefixed names that were accepted previously are still accepted. By @andyleiserson in [#9163](https://github.com/gfx-rs/wgpu/pull/9163).

#### Hal

- Make ordered texture and buffer uses hal specific. By @NiklasEi in [#8924](https://github.com/gfx-rs/wgpu/pull/8924).

### Bug Fixes

#### General

- Tracing support has been restored. By @andyleiserson in [#8429](https://github.com/gfx-rs/wgpu/pull/8429).
- Pipelines using passthrough shaders now correctly require explicit pipeline layout. By @inner-daemons in [#8881](https://github.com/gfx-rs/wgpu/pull/8881).
- Allow using a shader that defines I/O for dual-source blending in a pipeline that does not make use of it. By @andyleiserson in [#8856](https://github.com/gfx-rs/wgpu/pull/8856).
- Improve validation of dual-source blending, by @andyleiserson in [#9200](https://github.com/gfx-rs/wgpu/pull/9200):
  - Validate structs with `@blend_src` members whether or not they are used by an entry point.
  - Dual-source blending is not supported when there are multiple color attachments.
  - `TypeFlags::IO_SHAREABLE` is not set for structs other than `@blend_src` structs.
- Validate `strip_index_format` isn't None and equals index buffer format for indexed drawing with strip topology. By @beicause in [#8850](https://github.com/gfx-rs/wgpu/pull/8850).
- BREAKING: Renamed `EXPERIMENTAL_PASSTHROUGH_SHADERS` to `PASSTHROUGH_SHADERS` and made this no longer an experimental feature. By @inner-daemons in [#9054](https://github.com/gfx-rs/wgpu/pull/9054).
- BREAKING: End offsets in trace and `player` commands are now represented using `offset` + `size` instead. By @ErichDonGubler in [#9073](https://github.com/gfx-rs/wgpu/pull/9073).
- Validate some uncaught cases where buffer transfer operations could overflow when computing an end offset. By @ErichDonGubler in [#9073](https://github.com/gfx-rs/wgpu/pull/9073).
- Fix `local_invocation_id` and `local_invocation_index` being written multiple times in HLSL/MSL backends, and naming conflicts when users name variables `__local_invocation_id` or `__local_invocation_index`. By @inner-daemons in [#9099](https://github.com/gfx-rs/wgpu/pull/9099).
- Added internal labels to validation GPU objects and timestamp normalization code to improve clarity in graphics debuggers. By @szostid in [#9094](https://github.com/gfx-rs/wgpu/pull/9094)
- Fix multi-planar texture copying. By @noituri in [#9069](https://github.com/gfx-rs/wgpu/pull/9069)

#### naga

- The validator checks that override-sized arrays have a positive size, if overrides have been resolved. By @andyleiserson in [#8822](https://github.com/gfx-rs/wgpu/pull/8822).
- Fix some cases where f16 constants were not working. By @andyleiserson in [#8816](https://github.com/gfx-rs/wgpu/pull/8816).
- Use wrapping arithmetic when evaluating constant expressions involving `u32`. By @andyleiserson in [#8912](https://github.com/gfx-rs/wgpu/pull/8912).
- Fix missing side effects from sequence expressions in GLSL. By @Vipitis in [#8787](https://github.com/gfx-rs/wgpu/pull/8787).
- Naga now enforces the `@must_use` attribute on WGSL built-in functions, when applicable. You can waive the error with a phony assignment, e.g., `_ = subgroupElect()`. By @andyleiserson in [#8713](https://github.com/gfx-rs/wgpu/pull/8713).
- Reject zero-value construction of a runtime-sized array with a validation error. Previously it would crash in the HLSL backend. By @mooori in [#8741](https://github.com/gfx-rs/wgpu/pull/8741).
- Reject splat vector construction if the argument type does not match the type of the vector's scalar. Previously it would succeed. By @mooori in [#8829](https://github.com/gfx-rs/wgpu/pull/8829).
- Fixed `workgroupUniformLoad` incorrectly returning an atomic when called on an atomic, it now returns the inner `T` as per the spec. By @cryvosh in [#8791](https://github.com/gfx-rs/wgpu/pull/8791).
- Fixed constant evaluation for `sign()` builtin to return zero when the argument is zero. By @mandryskowski in [#8942](https://github.com/gfx-rs/wgpu/pull/8942).
- Allow array generation to compile with the macOS 10.12 Metal compiler. By @madsmtm in [#8953](https://github.com/gfx-rs/wgpu/pull/8953)
- Naga now detects bitwise shifts by a constant exceeding the operand bit width at compile time, and disallows scalar-by-vector and vector-by-scalar shifts in constant evaluation. By @andyleiserson in [#8907](https://github.com/gfx-rs/wgpu/pull/8907).
- Naga uses wrapping arithmetic when evaluating dot products on concrete integer types (`u32` and `i32`). By @BKDaugherty in [#9142](https://github.com/gfx-rs/wgpu/pull/9142).
- Disallow negation of a matrix in WGSL. By @andyleiserson in [#9157](https://github.com/gfx-rs/wgpu/pull/9157).
- Fix evaluation order of compound assignment (e.g. `+=`) LHS and RHS. By @andyleiserson in [#9181](https://github.com/gfx-rs/wgpu/pull/9181).
- Fixed invalid MSL when `float16`-format vertex input data was accessed via an `f16`-type variable in a vertex shader. By @andyleiserson in [#9166](https://github.com/gfx-rs/wgpu/pull/9166).

#### Validation

- Fixed validation of the texture format in GPUDepthStencilState when neither depth nor stencil is actually enabled. By @andyleiserson in [#8766](https://github.com/gfx-rs/wgpu/pull/8766).
- Check that depth bias is not used with non-triangle topologies. By @andyleiserson in [#8856](https://github.com/gfx-rs/wgpu/pull/8856).
- Check that if the shader outputs `frag_depth`, then the pipeline must have a depth attachment. By @andyleiserson in [#8856](https://github.com/gfx-rs/wgpu/pull/8856).
- Fix incorrect acceptance of some swizzle selectors that are not valid for their operand, e.g. `const v = vec2<i32>(); let r = v.xyz`. By @andyleiserson in [#8949](https://github.com/gfx-rs/wgpu/pull/8949).
- Fixed calculation of the total number of bindings in a pipeline layout when validating against device limits. By @andyleiserson in [#8997](https://github.com/gfx-rs/wgpu/pull/8997).
- Reject non-constructible types (runtime- and override-sized arrays, and structs containing non-constructible types) in more places where they should not be allowed. By @andyleiserson in [#8873](https://github.com/gfx-rs/wgpu/pull/8873).
- The query set type for an occlusion query is now validated when opening the render pass, in addition to within the call to `beginOcclusionQuery`. By @andyleiserson in [#9086](https://github.com/gfx-rs/wgpu/pull/9086).
- Require that the blend factor is `One` when the blend operation is `Min` or `Max`. The `BlendFactorOnUnsupportedTarget` error is now reported within `ColorStateError` rather than directly in `CreateRenderPipelineError`. By @andyleiserson in [#9110](https://github.com/gfx-rs/wgpu/pull/9110).

#### Vulkan

- Fixed a variety of mesh shader SPIR-V writer issues from the original implementation. By @inner-daemons in [#8756](https://github.com/gfx-rs/wgpu/pull/8756)
- Offset the vertex buffer device address when building a BLAS instead of using the `first_vertex` field. By @Vecvec in [#9220](https://github.com/gfx-rs/wgpu/pull/9220)
- Remove incorrect ordered texture uses. By @NiklasEi in [#8924](https://github.com/gfx-rs/wgpu/pull/8924).

#### Metal / macOS

- Fix one-second delay when switching a wgpu app to the foreground. By [@emilk](https://github.com/emilk) in [#9141](https://github.com/gfx-rs/wgpu/pull/9141)
- Work around Metal driver bug with atomic textures. By @atlv24 in [#9185](https://github.com/gfx-rs/wgpu/pull/9185)
- Fix setting an immediate for a Mesh shader. By [@waywardmonkeys](https://github.com/waywardmonkeys) in [#9254](https://github.com/gfx-rs/wgpu/pull/9254)

#### GLES

- `DisplayHandle` should now be passed to `InstanceDescriptor` for correct EGL initialization on Wayland. By @MarijnS95 in [#8012](https://github.com/gfx-rs/wgpu/pull/8012)
  Note that the existing workaround to create surfaces before the adapter is no longer valid.
- Changing shader constants now correctly recompiles the shader. By @DerSchmale in [#8291](https://github.com/gfx-rs/wgpu/pull/8291).

### Performance

#### GLES

- The GL backend would now try to take advantage of `GL_EXT_multisampled_render_to_texture` extension when applicable to skip the multi-sample resolve operation. By @opstic in [#8536](https://github.com/gfx-rs/wgpu/pull/8536).

### Documentation

#### General

- Expanded documentation of `QuerySet`, `QueryType`, and `resolve_query_set()` describing how to use queries. By @kpreid in [#8776](https://github.com/gfx-rs/wgpu/pull/8776).

## v28.0.1 (2025-03-01)

### General

- Fixed crash on nvidia cards when presenting from another thread. By @inner-daemons in [#9036](https://github.com/gfx-rs/wgpu/pull/9036).

### Vulkan

- Fixed crash on some Mali drivers on Android. By @beicause in [#8769](https://github.com/gfx-rs/wgpu/pull/8769).

### Metal

- Re-added support for TRANSIENT textures on Apple A7 chips. By @Opstic in [#8725](https://github.com/gfx-rs/wgpu/pull/8725).

## v28.0.0 (2025-12-17)

### Major Changes

#### Mesh Shaders

This has been a long time coming. See [the tracking issue](https://github.com/gfx-rs/wgpu/issues/7197) for more information.
They are now fully supported on Vulkan, and supported on Metal and DX12 with passthrough shaders. WGSL parsing and rewriting
is supported, meaning they can be used through WESL or naga_oil.

Mesh shader pipelines replace the standard vertex shader pipelines and allow new ways to render meshes.
They are ideal for meshlet rendering, a form of rendering where small groups of triangles are handled together,
for both culling and rendering.

They are compute-like shaders, and generate primitives which are passed directly to the rasterizer, rather
than having a list of vertices generated individually and then using a static index buffer. This means that certain computations
on nearby groups of triangles can be done together, the relationship between vertices and primitives is more programmable, and
you can even pass non-interpolated per-primitive data to the fragment shader, independent of vertices.

Mesh shaders are very versatile, and are powerful enough to replace vertex shaders, tesselation shaders, and geometry shaders
on their own or with task shaders.

A full example of mesh shaders in use can be seen in the `mesh_shader` example. For the full specification of mesh shaders in wgpu, go to [docs/api-specs/mesh_shading.md](docs/api-specs/mesh_shading.md). Below is a small snippet of shader code demonstrating their usage:

```wgsl
@task
@payload(taskPayload)
@workgroup_size(1)
fn ts_main() -> @builtin(mesh_task_size) vec3<u32> {
    // Task shaders can use workgroup variables like compute shaders
    workgroupData = 1.0;
    // Pass some data to all mesh shaders dispatched by this workgroup
    taskPayload.colorMask = vec4(1.0, 1.0, 0.0, 1.0);
    taskPayload.visible = 1;
    // Dispatch a mesh shader grid with one workgroup
    return vec3(1, 1, 1);
}

@mesh(mesh_output)
@payload(taskPayload)
@workgroup_size(1)
fn ms_main(@builtin(local_invocation_index) index: u32, @builtin(global_invocation_id) id: vec3<u32>) {
    // Set how many outputs this workgroup will generate
    mesh_output.vertex_count = 3;
    mesh_output.primitive_count = 1;
    // Can also use workgroup variables
    workgroupData = 2.0;

    // Set vertex outputs
    mesh_output.vertices[0].position = positions[0];
    mesh_output.vertices[0].color = colors[0] * taskPayload.colorMask;

    mesh_output.vertices[1].position = positions[1];
    mesh_output.vertices[1].color = colors[1] * taskPayload.colorMask;

    mesh_output.vertices[2].position = positions[2];
    mesh_output.vertices[2].color = colors[2] * taskPayload.colorMask;

    // Set the vertex indices for the only primitive
    mesh_output.primitives[0].indices = vec3<u32>(0, 1, 2);
    // Cull it if the data passed by the task shader says to
    mesh_output.primitives[0].cull = taskPayload.visible == 1;
    // Give a noninterpolated per-primitive vec4 to the fragment shader
    mesh_output.primitives[0].colorMask = vec4<f32>(1.0, 0.0, 1.0, 1.0);
}
```

##### Thanks

This was a monumental effort from many different people, but it was championed by @inner-daemons, without whom it would not have happened.
Thank you @cwfitzgerald for doing the bulk of the code review. Finally thank you @ColinTimBarndt for coordinating the testing effort.

Reviewers:

- @cwfitzgerald
- @jimblandy
- @ErichDonGubler

`wgpu` Contributions:

- Metal implementation in wgpu-hal. By @inner-daemons in [#8139](https://github.com/gfx-rs/wgpu/pull/8139).
- DX12 implementation in wgpu-hal. By @inner-daemons in [#8110](https://github.com/gfx-rs/wgpu/pull/8110).
- Vulkan implementation in wgpu-hal. By @inner-daemons in [#7089](https://github.com/gfx-rs/wgpu/pull/7089).
- wgpu/wgpu-core implementation. By @inner-daemons in [#7345](https://github.com/gfx-rs/wgpu/pull/7345).
- New mesh shader limits and validation. By @inner-daemons in [#8507](https://github.com/gfx-rs/wgpu/pull/8507).

`naga` Contributions:

- Naga IR implementation. By @inner-daemons in [#8104](https://github.com/gfx-rs/wgpu/pull/8104).
- `wgsl-in` implementation in naga. By @inner-daemons in [#8370](https://github.com/gfx-rs/wgpu/pull/8370).
- `spv-out` implementation in naga. By @inner-daemons in [#8456](https://github.com/gfx-rs/wgpu/pull/8456).
- `wgsl-out` implementation in naga. By @Slightlyclueless in [#8481](https://github.com/gfx-rs/wgpu/pull/8481).
- Allow barriers in mesh/task shaders. By @inner-daemons in [#8749](https://github.com/gfx-rs/wgpu/pull/8749)

Testing Assistance:

- @ColinTimBarndt
- @AdamK2003
- @Mhowser
- @9291Sam
- 3 more testers who wished to remain anonymous.

Thank you to everyone to made this happen!

#### Switch from `gpu-alloc` to `gpu-allocator` in the `vulkan` backend

`gpu-allocator` is the allocator used in the `dx12` backend, allowing to configure
the allocator the same way in those two backends converging their behavior.

This also brings the `Device::generate_allocator_report` feature to
the vulkan backend.

By @DeltaEvo in [#8158](https://github.com/gfx-rs/wgpu/pull/8158).

#### `wgpu::Instance::enumerate_adapters` is now `async` & available on WebGPU

BREAKING CHANGE: `enumerate_adapters` is now `async`:

```diff
- pub fn enumerate_adapters(&self, backends: Backends) -> Vec<Adapter> {
+ pub fn enumerate_adapters(&self, backends: Backends) -> impl Future<Output = Vec<Adapter>> {
```

This yields two benefits:

- This method is now implemented on non-native using the standard `Adapter::request_adapter(…)`, making `enumerate_adapters` a portable surface. This was previously a nontrivial pain point when an application wanted to do some of its own filtering of adapters.
- This method can now be implemented in custom backends.

By @R-Cramer4 in [#8230](https://github.com/gfx-rs/wgpu/pull/8230)

#### New `LoadOp::DontCare`

In the case where a renderpass unconditionally writes to all pixels in the rendertarget,
`Load` can cause unnecessary memory traffic, and `Clear` can spend time unnecessarily
clearing the rendertargets. `DontCare` is a new `LoadOp` which will leave the contents
of the rendertarget undefined. Because this could lead to undefined behavior, this API
requires that the user gives an unsafe token to use the api.

While you can use this unconditionally, on platforms where `DontCare` is not available,
it will internally use a different load op.

```rust
load: LoadOp::DontCare(unsafe { wgpu::LoadOpDontCare::enabled() })
```

By @cwfitzgerald in [#8549](https://github.com/gfx-rs/wgpu/pull/8549)

#### `MipmapFilterMode` is split from `FilterMode`

This is a breaking change that aligns wgpu with spec.

```diff
SamplerDescriptor {
...
-     mipmap_filter: FilterMode::Nearest
+     mipmap_filter: MipmapFilterMode::Nearest
...
}
```

By @sagudev in [#8314](https://github.com/gfx-rs/wgpu/pull/8314).

#### Multiview on all major platforms and support for multiview bitmasks

Multiview is a feature that allows rendering the same content to multiple layers of a texture.
This is useful primarily in VR where you wish to display almost identical content to 2 views,
just with a different perspective. Instead of using 2 draw calls or 2 instances for each object, you
can use this feature.

Multiview is also called view instancing in DX12 or vertex amplification in Metal.

Multiview has been reworked, adding support for Metal and DX12, and adding testing and validation to wgpu itself.
This change also introduces a view bitmask, a new field in `RenderPassDescriptor` that allows a render pass to render
to multiple non-adjacent layers when using the `SELECTIVE_MULTIVIEW` feature. If you don't use multi-view,
you can set this field to none.

```diff
- wgpu::RenderPassDescriptor {
-     label: None,
-     color_attachments: &color_attachments,
-     depth_stencil_attachment: None,
-     timestamp_writes: None,
-     occlusion_query_set: None,
- }
+ wgpu::RenderPassDescriptor {
+     label: None,
+     color_attachments: &color_attachments,
+     depth_stencil_attachment: None,
+     timestamp_writes: None,
+     occlusion_query_set: None,
+     multiview_mask: NonZero::new(3),
+ }
```

One other breaking change worth noting is that in WGSL `@builtin(view_index)` now requires a type of `u32`, where previously it required `i32`.

By @inner-daemons in [#8206](https://github.com/gfx-rs/wgpu/pull/8206).

#### Error scopes now use guards and are thread-local.

```diff
- device.push_error_scope(wgpu::ErrorFilter::Validation);
+ let scope = device.push_error_scope(wgpu::ErrorFilter::Validation);
  // ... perform operations on the device ...
- let error: Option<Error> = device.pop_error_scope().await;
+ let error: Option<Error> = scope.pop().await;
```

Device error scopes now operate on a per-thread basis. This allows them to be used easily within multithreaded contexts,
without having the error scope capture errors from other threads.

When the `std` feature is **not** enabled, we have no way to differentiate between threads, so error scopes return to be
global operations.

By @cwfitzgerald in [#8685](https://github.com/gfx-rs/wgpu/pull/8685)

#### Log Levels

We have received complaints about wgpu being way too log spammy at log levels `info`/`warn`/`error`. We have
adjusted our log policy and changed logging such that `info` and above should be silent unless some exceptional
event happens. Our new log policy is as follows:

- Error: if we can’t (for some reason, usually a bug) communicate an error any other way.
- Warning: similar, but there may be one-shot warnings about almost certainly sub-optimal.
- Info: do not use
- Debug: Used for interesting events happening inside wgpu.
- Trace: Used for all events that might be useful to either `wgpu` or application developers.

By @cwfitzgerald in [#8579](https://github.com/gfx-rs/wgpu/pull/8579).

#### Push constants renamed immediates, API brought in line with spec.

As the "immediate data" api is getting close to stabilization in the WebGPU specification,
we're bringing our implementation in line with what the spec dictates.

First, in the `PipelineLayoutDescriptor`, you now pass a unified size for all stages:

```diff
- push_constant_ranges: &[wgpu::PushConstantRange {
-     stages: wgpu::ShaderStages::VERTEX_FRAGMENT,
-     range: 0..12,
- }]
+ immediate_size: 12,
```

Second, on the command encoder you no longer specify a shader stage, uploads apply
to all shader stages that use immediate data.

```diff
- rpass.set_push_constants(wgpu::ShaderStages::FRAGMENT, 0, bytes);
+ rpass.set_immediates(0, bytes);
```

Third, immediates are now declared with the `immediate` address space instead of
the `push_constant` address space. Due to a [known issue on DX12](https://github.com/gfx-rs/wgpu/issues/5683)
it is advised to always use a structure for your immediates until that issue
is fixed.

```diff
- var<push_constant> my_pc: MyPushConstant;
+ var<immediate> my_imm: MyImmediate;
```

Finally, our implementation currently still zero-initializes the immediate data
range you declared in the pipeline layout. This is not spec compliant and failing
to populate immediate "slots" that are used in the shader will be a validation error
in a future version. See [the proposal][immediate-data-spec] for details for determining
which slots are populated in a given shader.

By @cwfitzgerald in [#8724](https://github.com/gfx-rs/wgpu/pull/8724).

[immediate-data-spec]: https://github.com/gpuweb/gpuweb/blob/main/proposals/immediate-data.md#immediate-slots

#### `subgroup_{min,max}_size` renamed and moved from `Limits` -> `AdapterInfo`

To bring our code in line with the WebGPU spec, we have moved information about subgroup size
from limits to adapter info. Limits was not the correct place for this anyway, and we had some
code special casing those limits.

Additionally we have renamed the fields to match the spec.

```diff
- let min = limits.min_subgroup_size;
+ let min = info.subgroup_min_size;
- let max = limits.max_subgroup_size;
+ let max = info.subgroup_max_size;
```

By @cwfitzgerald in [#8609](https://github.com/gfx-rs/wgpu/pull/8609).

### New Features

- Added support for transient textures on Vulkan and Metal. By @opstic in [#8247](https://github.com/gfx-rs/wgpu/pull/8247)
- Implement shader triangle barycentric coordinate builtins. By @atlv24 in [#8320](https://github.com/gfx-rs/wgpu/pull/8320).
- Added support for binding arrays of storage textures on Metal. By @msvbg in [#8464](https://github.com/gfx-rs/wgpu/pull/8464)
- Added support for multisampled texture arrays on Vulkan through adapter feature `MULTISAMPLE_ARRAY`. By @LaylBongers in [#8571](https://github.com/gfx-rs/wgpu/pull/8571).
- Added `get_configuration` to `wgpu::Surface`, that returns the current configuration of `wgpu::Surface`. By @sagudev in [#8664](https://github.com/gfx-rs/wgpu/pull/8664).
- Add `wgpu_core::Global::create_bind_group_layout_error`. By @ErichDonGubler in [#8650](https://github.com/gfx-rs/wgpu/pull/8650).

### Changes

#### General

- Require new enable extensions when using ray queries and position fetch (`wgpu_ray_query`, `wgpu_ray_query_vertex_return`). By @Vecvec in [#8545](https://github.com/gfx-rs/wgpu/pull/8545).
- Texture now has `from_custom`. By @R-Cramer4 in [#8315](https://github.com/gfx-rs/wgpu/pull/8315).
- Using both the wgpu command encoding APIs and `CommandEncoder::as_hal_mut` on the same encoder will now result in a panic.
- Allow `include_spirv!` and `include_spirv_raw!` macros to be used in constants and statics. By @clarfonthey in [#8250](https://github.com/gfx-rs/wgpu/pull/8250).
- Added support for rendering onto multi-planar textures. By @noituri in [#8307](https://github.com/gfx-rs/wgpu/pull/8307).
- Validation errors from `CommandEncoder::finish()` will report the label of the invalid encoder. By @kpreid in [#8449](https://github.com/gfx-rs/wgpu/pull/8449).
- Corrected documentation of the minimum alignment of the _end_ of a mapped range of a buffer (it is 4, not 8). By @kpreid in [#8450](https://github.com/gfx-rs/wgpu/pull/8450).
- `util::StagingBelt` now takes a `Device` when it is created instead of when it is used. By @kpreid in [#8462](https://github.com/gfx-rs/wgpu/pull/8462).
- `wgpu_hal::vulkan::Texture` API changes to handle externally-created textures and memory more flexibly. By @s-ol in [#8512](https://github.com/gfx-rs/wgpu/pull/8512), [#8521](https://github.com/gfx-rs/wgpu/pull/8521).
- Render passes are now validated against the `maxColorAttachmentBytesPerSample` limit. By @andyleiserson in [#8697](https://github.com/gfx-rs/wgpu/pull/8697).

#### Metal

- Expose render layer. By @xiaopengli89 in [#8707](https://github.com/gfx-rs/wgpu/pull/8707)
- `MTLDevice` is thread-safe. By @uael in [#8168](https://github.com/gfx-rs/wgpu/pull/8168)

#### naga

- Prevent UB with invalid ray query calls on spirv. By @Vecvec in [#8390](https://github.com/gfx-rs/wgpu/pull/8390).
- Update the set of binding_array capabilities. In most cases, they are set automatically from `wgpu` features, and this change should not be user-visible. By @andyleiserson in [#8671](https://github.com/gfx-rs/wgpu/pull/8671).
- Naga now accepts the `var<function>` syntax for declaring local variables. By @andyleiserson in [#8710](https://github.com/gfx-rs/wgpu/pull/8710).

### Bug Fixes

#### General

- Fixed a bug where mapping sub-ranges of a buffer on web would fail with `OperationError: GPUBuffer.getMappedRange: GetMappedRange range extends beyond buffer's mapped range`. By @ryankaplan in [#8349](https://github.com/gfx-rs/wgpu/pull/8349)
- Reject fragment shader output `location`s > `max_color_attachments` limit. By @ErichDonGubler in [#8316](https://github.com/gfx-rs/wgpu/pull/8316).
- WebGPU device requests now support the required limits `maxColorAttachments` and `maxColorAttachmentBytesPerSample`. By @evilpie in [#8328](https://github.com/gfx-rs/wgpu/pull/8328)
- Reject binding indices that exceed `wgpu_types::Limits::max_bindings_per_bind_group` when deriving a bind group layout for a pipeline. By @jimblandy in [#8325](https://github.com/gfx-rs/wgpu/pull/8325).
- Removed three features from `wgpu-hal` which did nothing useful: `"cargo-clippy"`, `"gpu-allocator"`, and `"rustc-hash"`. By @kpreid in [#8357](https://github.com/gfx-rs/wgpu/pull/8357).
- `wgpu_types::PollError` now always implements the `Error` trait. By @kpreid in [#8384](https://github.com/gfx-rs/wgpu/pull/8384).
- The texture subresources used by the color attachments of a render pass are no longer allowed to overlap when accessed via different texture views. By @andyleiserson in [#8402](https://github.com/gfx-rs/wgpu/pull/8402).
- The `STORAGE_READ_ONLY` texture usage is now permitted to coexist with other read-only usages. By @andyleiserson in [#8490](https://github.com/gfx-rs/wgpu/pull/8490).
- Validate that buffers are unmapped in `write_buffer` calls. By @ErichDonGubler in [#8454](https://github.com/gfx-rs/wgpu/pull/8454).
- Shorten critical section inside present such that the snatch write lock is no longer held during present, preventing other work happening on other threads. By @cwfitzgerald in [#8608](https://github.com/gfx-rs/wgpu/pull/8608).

#### naga

- The `||` and `&&` operators now "short circuit", i.e., do not evaluate the RHS if the result can be determined from just the LHS. By @andyleiserson in [#7339](https://github.com/gfx-rs/wgpu/pull/7339).
- Fix a bug that resulted in the Metal error `program scope variable must reside in constant address space` in some cases. By @teoxoy in [#8311](https://github.com/gfx-rs/wgpu/pull/8311).
- Handle `rayQueryTerminate` in spv-out instead of ignoring it. By @Vecvec in [#8581](https://github.com/gfx-rs/wgpu/pull/8581).

#### DX12

- Align copies b/w textures and buffers via a single intermediate buffer per copy when `D3D12_FEATURE_DATA_D3D12_OPTIONS13.UnrestrictedBufferTextureCopyPitchSupported` is `false`. By @ErichDonGubler in [#7721](https://github.com/gfx-rs/wgpu/pull/7721).
- Fix detection of Int64 Buffer/Texture atomic features. By @cwfitzgerald in [#8667](https://github.com/gfx-rs/wgpu/pull/8667).

#### Vulkan

- Fixed a validation error regarding atomic memory semantics. By @atlv24 in [#8391](https://github.com/gfx-rs/wgpu/pull/8391).

#### Metal

- Fixed a variety of feature detection related bugs. By @inner-daemons in [#8439](https://github.com/gfx-rs/wgpu/pull/8439).

#### WebGPU

- Fixed a bug where the texture aspect was not passed through when calling `copy_texture_to_buffer` in WebGPU, causing the copy to fail for depth/stencil textures. By @Tim-Evans-Seequent in [#8445](https://github.com/gfx-rs/wgpu/pull/8445).

#### GLES

- Fix race when downloading texture from compute shader pass. By @SpeedCrash100 in [#8527](https://github.com/gfx-rs/wgpu/pull/8527)
- Fix double window class registration when dynamic libraries are used. By @Azorlogh in [#8548](https://github.com/gfx-rs/wgpu/pull/8548)
- Fix context loss on device initialization on GL3.3-4.1 contexts. By @cwfitzgerald in [#8674](https://github.com/gfx-rs/wgpu/pull/8674).
- `VertexFormat::Unorm10_10_10_2` can now be used on `gl` backends. By @mooori in [#8717](https://github.com/gfx-rs/wgpu/pull/8717).

#### hal

- `DropCallback`s are now called after dropping all other fields of their parent structs. By @jerzywilczek in [#8353](https://github.com/gfx-rs/wgpu/pull/8353)

## v27.0.4 (2025-10-23)

This release includes `wgpu-hal` version `27.0.4`. All other crates remain at their previous versions.

### Bug Fixes

#### General

- Remove fragile dependency constraint on `ordered-float` that prevented semver-compatible changes above `5.0.0`. By @kpreid in [#8371](https://github.com/gfx-rs/wgpu/pull/8371).

#### Vulkan

- Work around extremely poor frame pacing from AMD and Nvidia cards on Windows in `Fifo` and `FifoRelaxed` present modes. This is due to the drivers implicitly using a DXGI (Direct3D) swapchain to implement these modes and it having vastly different timing properties. See https://github.com/gfx-rs/wgpu/issues/8310 and https://github.com/gfx-rs/wgpu/issues/8354 for more information. By @cwfitzgerald in [#8420](https://github.com/gfx-rs/wgpu/pull/8420).

## v27.0.3 (2025-10-22)

This release includes `naga`, `wgpu-core` and `wgpu-hal` version `27.0.3`. All other crates remain at their previous versions.

### Bug Fixes

#### naga

- Fix a bug that resulted in the Metal error `program scope variable must reside in constant address space` in some cases. Backport of [#8311](https://github.com/gfx-rs/wgpu/pull/8311) by @teoxoy.

#### General

- Remove an assertion that causes problems if `CommandEncoder::as_hal_mut` is used. By @andyleiserson in [#8387](https://github.com/gfx-rs/wgpu/pull/8387).

#### DX12

- Align copies b/w textures and buffers via a single intermediate buffer per copy when `D3D12_FEATURE_DATA_D3D12_OPTIONS13.UnrestrictedBufferTextureCopyPitchSupported` is `false`. By @ErichDonGubler in [#7721](https://github.com/gfx-rs/wgpu/pull/7721), backported in [#8374](https://github.com/gfx-rs/wgpu/pull/8374).

## v27.0.2 (2025-10-03)

### Bug Fixes

#### DX12

- Fix device creation failures for devices that do not support mesh shaders. By @vorporeal in [#8297](https://github.com/gfx-rs/wgpu/pull/8297).

## v27.0.1 (2025-10-02)

### Bug Fixes

- Fixed the build on docs.rs. By @cwfitzgerald in [#8292](https://github.com/gfx-rs/wgpu/pull/8292).

## v27.0.0 (2025-10-01)

### Major Changes

#### Deferred command buffer actions: `map_buffer_on_submit` and `on_submitted_work_done`

You may schedule buffer mapping and a submission-complete callback to run automatically after you submit, directly from encoders, command buffers, and passes.

```rust
// Record some GPU work so the submission isn't empty and touches `buffer`.
encoder.clear_buffer(&buffer, 0, None);

// Defer mapping until this encoder is submitted.
encoder.map_buffer_on_submit(&buffer, wgpu::MapMode::Read, 0..size, |result| { .. });

// Fires after the command buffer's work is finished.
encoder.on_submitted_work_done(|| { .. });

// Automatically calls `map_async` and `on_submitted_work_done` after this submission finishes.
queue.submit([encoder.finish()]);
```

Available on `CommandEncoder`, `CommandBuffer`, `RenderPass`, and `ComputePass`.

By @cwfitzgerald in [#8125](https://github.com/gfx-rs/wgpu/pull/8125).

#### Builtin Support for DXGI swapchains on top of of DirectComposition Visuals in DX12

By enabling DirectComposition support, the dx12 backend can now support transparent windows.

This creates a single `IDCompositionVisual` over the entire window that is used by the mf`Surface`. If a user wants to manage the composition tree themselves, they should create their own device and composition, and pass the relevant visual down into `wgpu` via `SurfaceTargetUnsafe::CompositionVisual`.

```rust
let instance = wgpu::Instance::new(&wgpu::InstanceDescriptor {
    backend_options: wgpu::BackendOptions {
        dx12: wgpu::Dx12BackendOptions {
            presentation_system: wgpu::Dx12SwapchainKind::DxgiFromVisual,
            ..
        },
        ..
    },
    ..
});
```

By @n1ght-hunter in [#7550](https://github.com/gfx-rs/wgpu/pull/7550).

#### `EXPERIMENTAL_RAY_TRACING_ACCELERATION_STRUCTURE` has been merged into `EXPERIMENTAL_RAY_QUERY`

We have merged the acceleration structure feature into the `RayQuery` feature. This is to help work around an AMD driver bug and reduce the feature complexity of ray tracing. In the future when ray tracing pipelines are implemented, if either feature is enabled, acceleration structures will be available.

```diff
- Features::EXPERIMENTAL_RAY_TRACING_ACCELERATION_STRUCTURE
+ Features::EXPERIMENTAL_RAY_QUERY
```

By @Vecvec in [#7913](https://github.com/gfx-rs/wgpu/pull/7913).

#### New `EXPERIMENTAL_PRECOMPILED_SHADERS` API

We have added `Features::EXPERIMENTAL_PRECOMPILED_SHADERS`, replacing existing passthrough types with a unified `CreateShaderModuleDescriptorPassthrough` which allows passing multiple shader codes for different backends. By @SupaMaggie70Incorporated in [#7834](https://github.com/gfx-rs/wgpu/pull/7834)

Difference for SPIR-V passthrough:

```diff
- device.create_shader_module_passthrough(wgpu::ShaderModuleDescriptorPassthrough::SpirV(
-     wgpu::ShaderModuleDescriptorSpirV {
-         label: None,
-         source: spirv_code,
-     },
- ))
+ device.create_shader_module_passthrough(wgpu::ShaderModuleDescriptorPassthrough {
+     entry_point: "main".into(),
+     label: None,
+     spirv: Some(spirv_code),
+     ..Default::default()
})
```

This allows using precompiled shaders without manually checking which backend's code to pass, for example if you have shaders precompiled for both DXIL and SPIR-V.

#### Buffer mapping apis no longer have lifetimes

`Buffer::get_mapped_range()`, `Buffer::get_mapped_range_mut()`, and `Queue::write_buffer_with()` now return guard objects without any lifetimes. This
makes it significantly easier to store these types in structs, which is useful for building utilities that build the contents of a buffer over time.

```diff
- let buffer_mapping_ref: wgpu::BufferView<'_>           = buffer.get_mapped_range(..);
- let buffer_mapping_mut: wgpu::BufferViewMut<'_>        = buffer.get_mapped_range_mut(..);
- let queue_write_with:   wgpu::QueueWriteBufferView<'_> = queue.write_buffer_with(..);
+ let buffer_mapping_ref: wgpu::BufferView               = buffer.get_mapped_range(..);
+ let buffer_mapping_mut: wgpu::BufferViewMut            = buffer.get_mapped_range_mut(..);
+ let queue_write_with:   wgpu::QueueWriteBufferView     = queue.write_buffer_with(..);
```

By @sagudev in [#8046](https://github.com/gfx-rs/wgpu/pull/8046) and @cwfitzgerald in [#8070](https://github.com/gfx-rs/wgpu/pull/8161).

#### `EXPERIMENTAL_*` features now require unsafe code to enable

We want to be able to expose potentially experimental features to our users before we have ensured that they are fully sound to use.
As such, we now require any feature that is prefixed with `EXPERIMENTAL` to have a special unsafe token enabled in the device descriptor
acknowledging that the features may still have bugs in them and to report any they find.

```rust
adapter.request_device(&wgpu::DeviceDescriptor {
    features: wgpu::Features::EXPERIMENTAL_MESH_SHADER,
    experimental_features: unsafe { wgpu::ExperimentalFeatures::enabled() }
    ..
})
```

By @cwfitzgerald in [#8163](https://github.com/gfx-rs/wgpu/pull/8163).

#### Multi-draw indirect is now unconditionally supported when indirect draws are supported

We have removed `Features::MULTI_DRAW_INDIRECT` as it was unconditionally available on all platforms.
`RenderPass::multi_draw_indirect` is now available if the device supports downlevel flag `DownlevelFlags::INDIRECT_EXECUTION`.

If you are using spirv-passthrough with multi-draw indirect and `gl_DrawID`, you can know if `MULTI_DRAW_INDIRECT` is being emulated
by if the `Feature::MULTI_DRAW_INDIRECT_COUNT` feature is available on the device, this feature cannot be emulated efficicently.

By @cwfitzgerald in [#8162](https://github.com/gfx-rs/wgpu/pull/8162).

#### `wgpu::PollType::Wait` has now an optional timeout

We removed `wgpu::PollType::WaitForSubmissionIndex` and added fields to `wgpu::PollType::Wait` in order to express timeouts.

Before/after for `wgpu::PollType::Wait`:

```diff
-device.poll(wgpu::PollType::Wait).unwrap();
-device.poll(wgpu::PollType::wait_indefinitely()).unwrap();
+device.poll(wgpu::PollType::Wait {
+      submission_index: None, // Wait for most recent submission
+      timeout: Some(std::time::Duration::from_secs(60)), // Previous behavior, but more likely you want `None` instead.
+  })
+  .unwrap();
```

Before/after for `wgpu::PollType::WaitForSubmissionIndex`:

```diff
-device.poll(wgpu::PollType::WaitForSubmissionIndex(index_to_wait_on))
+device.poll(wgpu::PollType::Wait {
+      submission_index: Some(index_to_wait_on),
+      timeout: Some(std::time::Duration::from_secs(60)), // Previous behavior, but more likely you want `None` instead.
+  })
+  .unwrap();
```

⚠️ Previously, both `wgpu::PollType::WaitForSubmissionIndex` and `wgpu::PollType::Wait` had a hard-coded timeout of 60 seconds.

To wait indefinitely on the latest submission, you can also use the `wait_indefinitely` convenience function:

```rust
device.poll(wgpu::PollType::wait_indefinitely());
```

By @wumpf in [#8282](https://github.com/gfx-rs/wgpu/pull/8282), [#8285](https://github.com/gfx-rs/wgpu/pull/8285)

### New Features

#### General

- Added mesh shader support to `wgpu`, with examples. Requires passthrough. By @SupaMaggie70Incorporated in [#7345](https://github.com/gfx-rs/wgpu/pull/7345).
- Added support for external textures based on WebGPU's [`GPUExternalTexture`](https://www.w3.org/TR/webgpu/#gpuexternaltexture). These allow shaders to transparently operate on potentially multiplanar source texture data in either RGB or YCbCr formats via WGSL's `texture_external` type. This is gated behind the `Features::EXTERNAL_TEXTURE` feature, which is currently only supported on DX12. By @jamienicol in [#4386](https://github.com/gfx-rs/wgpu/issues/4386).
- `wgpu::Device::poll` can now specify a timeout via `wgpu::PollType::Wait`. By @wumpf in [#8282](https://github.com/gfx-rs/wgpu/pull/8282) & [#8285](https://github.com/gfx-rs/wgpu/pull/8285)

#### naga

- Expose `naga::front::wgsl::UnimplementedEnableExtension`. By @ErichDonGubler in [#8237](https://github.com/gfx-rs/wgpu/pull/8237).

### Changes

#### General

- Command encoding now happens when `CommandEncoder::finish` is called, not when the individual operations are requested. This does not affect the API, but may affect performance characteristics. By @andyleiserson in [#8220](https://github.com/gfx-rs/wgpu/pull/8220).
- Prevent resources for acceleration structures being created if acceleration structures are not enabled. By @Vecvec in [#8036](https://github.com/gfx-rs/wgpu/pull/8036).
- Validate that each `push_debug_group` pairs with exactly one `pop_debug_group`. By @andyleiserson in [#8048](https://github.com/gfx-rs/wgpu/pull/8048).
- `set_viewport` now requires that the supplied minimum depth value is less than the maximum depth value. By @andyleiserson in [#8040](https://github.com/gfx-rs/wgpu/pull/8040).
- Validation of `copy_texture_to_buffer`, `copy_buffer_to_texture`, and `copy_texture_to_texture` operations more closely follows the WebGPU specification. By @andyleiserson in various PRs.
  - Copies within the same texture must not overlap.
  - Copies of multisampled or depth/stencil formats must span an entire subresource (layer).
  - Copies of depth/stencil formats must be 4B aligned.
  - For texture-buffer copies, `bytes_per_row` on the buffer side must be 256B-aligned, even if the transfer is a single row.
- The offset for `set_vertex_buffer` and `set_index_buffer` must be 4B aligned. By @andyleiserson in [#7929](https://github.com/gfx-rs/wgpu/pull/7929).
- The offset and size of bindings are validated as fitting within the underlying buffer in more cases. By @andyleiserson in [#7911](https://github.com/gfx-rs/wgpu/pull/7911).
- The function you pass to `Device::on_uncaptured_error()` must now implement `Sync` in addition to `Send`, and be wrapped in `Arc` instead of `Box`.
  In exchange for this, it is no longer possible for calling `wgpu` functions while in that callback to cause a deadlock (not that we encourage you to actually do that).
  By @kpreid in [#8011](https://github.com/gfx-rs/wgpu/pull/8011).
- Make a compacted hal acceleration structure inherit a label from the base BLAS. By @Vecvec in [#8103](https://github.com/gfx-rs/wgpu/pull/8103).
- The limits requested for a device must now satisfy `min_subgroup_size <= max_subgroup_size`. By @andyleiserson in [#8085](https://github.com/gfx-rs/wgpu/pull/8085).
- Improve errors when buffer mapping is done incorrectly. Allow aliasing immutable [`BufferViews`]. By @cwfitzgerald in [#8150](https://github.com/gfx-rs/wgpu/pull/8150).
- Require new `F16_IN_F32` downlevel flag for `quantizeToF16`, `pack2x16float`, and `unpack2x16float` in WGSL input. By @aleiserson in [#8130](https://github.com/gfx-rs/wgpu/pull/8130).
- The error message for non-copyable depth/stencil formats no longer mentions the aspect when it is not relevant. By @reima in [#8156](https://github.com/gfx-rs/wgpu/pull/8156).
- Track the initialization status of buffer memory correctly when `copy_texture_to_buffer` skips over padding space between rows or layers, or when the start/end of a texture-buffer transfer is not 4B aligned. By @andyleiserson in [#8099](https://github.com/gfx-rs/wgpu/pull/8099).

#### naga

- naga now requires that no type be larger than 1 GB. This limit may be lowered in the future; feedback on an appropriate value for the limit is welcome. By @andyleiserson in [#7950](https://github.com/gfx-rs/wgpu/pull/7950).
- If the shader source contains control characters, naga now replaces them with U+FFFD ("replacement character") in diagnostic output. By @andyleiserson in [#8049](https://github.com/gfx-rs/wgpu/pull/8049).
- Add f16 IO polyfill on Vulkan backend to enable SHADER_F16 use without requiring `storageInputOutput16`. By @cryvosh in [#7884](https://github.com/gfx-rs/wgpu/pull/7884).
- For custom Naga backend authors: `naga::proc::Namer` now accepts reserved keywords using two new dedicated types, `proc::{KeywordSet, CaseInsensitiveKeywordSet}`. By @kpreid in [#8136](https://github.com/gfx-rs/wgpu/pull/8136).
- **BREAKING**: Previously the WGSL storage-texture format `rg11b10float` was incorrectly accepted and generated by naga, but now only accepts the the correct name `rg11b10ufloat` instead. By @ErikWDev in [#8219](https://github.com/gfx-rs/wgpu/pull/8219).
- The [`source()`](https://doc.rust-lang.org/std/error/trait.Error.html#method.source) method of `ShaderError` no longer reports the error as its own source. By @andyleiserson in [#8258](https://github.com/gfx-rs/wgpu/pull/8258).
- naga correctly ingests SPIR-V that use descriptor runtime indexing, which in turn is correctly converted into WGSLs binding array. By @hasenbanck in [8256](https://github.com/gfx-rs/wgpu/pull/8256).
- naga correctly ingests SPIR-V that loads from multi-sampled textures, which in turn is correctly converted into WGSLs texture_multisampled_2d and load operations. By @hasenbanck in [8270](https://github.com/gfx-rs/wgpu/pull/8270).
- naga implement OpImageGather and OpImageDrefGather operations when ingesting SPIR-V. By @hasenbanck in [8280](https://github.com/gfx-rs/wgpu/pull/8280).

#### DX12

- Allow disabling waiting for latency waitable object. By @marcpabst in [#7400](https://github.com/gfx-rs/wgpu/pull/7400)
- Add mesh shader support, including to the example. By @SupaMaggie70Incorporated in [#8110](https://github.com/gfx-rs/wgpu/issues/8110)

### Bug Fixes

#### General

- Validate that effective buffer binding size is aligned to 4 when creating bind groups with buffer entries.. By @ErichDonGubler in [8041](https://github.com/gfx-rs/wgpu/pull/8041).

#### DX12

- Create an event per wait to prevent 60 second hangs in certain multithreaded scenarios. By @Vecvec in [#8273](https://github.com/gfx-rs/wgpu/pull/8273).
- Fixed a bug where access to matrices with 2 rows would not work in some cases. By @andyleiserson in [#7438](https://github.com/gfx-rs/wgpu/pull/7438).

##### EGL

- Fixed unwrap failed in context creation for some Android devices. By @uael in [#8024](https://github.com/gfx-rs/wgpu/pull/8024).

##### Vulkan

- Fixed wrong color format+space being reported versus what is hardcoded in `create_swapchain()`. By @MarijnS95 in [#8226](https://github.com/gfx-rs/wgpu/pull/8226).

#### naga

- [wgsl-in] Allow a trailing comma in `@blend_src(…)` attributes. By @ErichDonGubler in [#8137](https://github.com/gfx-rs/wgpu/pull/8137).
- [wgsl-in] Allow a trailing comma in the list of `case` values inside a `switch`. By @reima in [#8165](https://github.com/gfx-rs/wgpu/pull/8165).
- Escape, rather than strip, identifiers with Unicode. By @ErichDonGubler in [7995](https://github.com/gfx-rs/wgpu/pull/7995).

### Documentation

#### General

- Clarify that subgroup barriers require both the `SUBGROUP` and `SUBGROUP_BARRIER` features / capabilities. By @andyleiserson in [#8203](https://github.com/gfx-rs/wgpu/pull/8203).

# v26.0.6 (2025-10-23)

This release includes `wgpu-hal` version `26.0.6`. All other crates remain at their previous versions.

### Bug Fixes

#### Vulkan

- Work around extremely poor frame pacing from AMD and Nvidia cards on Windows in `Fifo` and `FifoRelaxed` present modes. This is due to the drivers implicitly using a DXGI (Direct3D) swapchain to implement these modes and it having vastly different timing properties. See https://github.com/gfx-rs/wgpu/issues/8310 and https://github.com/gfx-rs/wgpu/issues/8354 for more information. By @cwfitzgerald in [#8420](https://github.com/gfx-rs/wgpu/pull/8420).

## v26.0.5 (2025-10-21)

This release includes `wgpu-hal` version `26.0.5`. All other crates remain at their previous versions.

### Bug Fixes

#### DX12

- Align copies b/w textures and buffers via a single intermediate buffer per copy when `D3D12_FEATURE_DATA_D3D12_OPTIONS13.UnrestrictedBufferTextureCopyPitchSupported` is `false`. By @ErichDonGubler in [#7721](https://github.com/gfx-rs/wgpu/pull/7721), backported in [#8375](https://github.com/gfx-rs/wgpu/pull/8375).

## v26.0.4 (2025-08-07)

### Bug Fixes

#### Vulkan

- Fix `STATUS_HEAP_CORRUPTION` crash when concurrently calling `create_sampler`. By @atlv24 in [#8043](https://github.com/gfx-rs/wgpu/pull/8043), [#8056](https://github.com/gfx-rs/wgpu/pull/8056).

## v26.0.3 (2025-07-30)

### Bug Fixes

- Fixed memory leak in vulkan backend. By @cwfitzgerald in [#8031](https://github.com/gfx-rs/wgpu/pull/8031).

### Bug Fixes

#### naga

- Fix empty `if` statements causing errors on spirv 1.6+. By @Vecvec in [#7883](https://github.com/gfx-rs/wgpu/pull/7883).

## v26.0.2 (2025-07-23)

### Bug Fixes

- Fixed vulkan validation error regarding the swapchain in latest SDK. By @cwfitzgerald in [#7971](https://github.com/gfx-rs/wgpu/pull/7971).
- Fixed flickering on AMD devices and crashes inside Renderdoc due to incorrect caching of `VkFramebuffer`s when the driver re-used image view handles. By @cwfitzgerald in [#7972](https://github.com/gfx-rs/wgpu/pull/7972).

> [!WARNING]
> There is formally a breaking change in `wgpu_hal::vulkan::Device::texture_from_raw` as there is now a `&self` receiver where
> there previously wasn't one. This will not affect you unless you explicitly use this api. We have gone ahead with the release
> as the bug was pervasive and made wgpu unusable for the affected people on v26.

## v26.0.1 (2025-07-10)

### Bug Fixes

- Fixed build error inside `wgpu::util::initialize_adapter_from_env` when `std` feature is not enabled. By @kpreid in [#7918](https://github.com/gfx-rs/wgpu/pull/7918).
- Fixed build error occurring when the `profiling` dependency is configured to have profiling active. By @kpreid in [#7916](https://github.com/gfx-rs/wgpu/pull/7916).
- Emit a validation error instead of panicking when a query set index is OOB. By @ErichDonGubler in [#7908](https://github.com/gfx-rs/wgpu/pull/7908).

## v26.0.0 (2025-07-09)

### Major Features

#### New method `TextureView::texture`

You can now call `texture_view.texture()` to get access to the texture that
a given texture view points to.

By @cwfitzgerald and @Wumpf in [#7907](https://github.com/gfx-rs/wgpu/pull/7907).

#### `as_hal` calls now return guards instead of using callbacks.

Previously, if you wanted to get access to the wgpu-hal or underlying api types, you would call `as_hal` and get the hal type as a callback. Now the function returns a guard which dereferences to the hal type.

```diff
- device.as_hal::<hal::api::Vulkan>(|hal_device| {...});
+ let hal_device: impl Deref<Item = hal::vulkan::Device> = device.as_hal::<hal::api::Vulkan>();
```

By @cwfitzgerald in [#7863](https://github.com/gfx-rs/wgpu/pull/7863).

#### Enabling Vulkan Features/Extensions

For those who are doing vulkan/wgpu interop or passthrough and need to enable features/extensions that wgpu does not expose, there is a new `wgpu_hal::vulkan::Adapter::open_with_callback` that allows the user to modify the pnext chains and extension lists populated by wgpu before we create a vulkan device. This should vastly simplify the experience, as previously you needed to create a device yourself.

Underlying api interop is a quickly evolving space, so we welcome all feedback!

```rust
type VkApi = wgpu::hal::api::Vulkan;
let adapter: wgpu::Adapter = ...;

let mut buffer_device_address_create_info = ash::vk::PhysicalDeviceBufferDeviceAddressFeatures { .. };
let hal_device: wgpu::hal::OpenDevice<VkApi> = adapter
    .as_hal::<VkApi>()
    .unwrap()
    .open_with_callback(
        wgpu::Features::empty(),
        &wgpu::MemoryHints::Performance,
        Some(Box::new(|args| {
            // Add the buffer device address extension.
            args.extensions.push(ash::khr::buffer_device_address::NAME);
            // Extend the create info with the buffer device address create info.
            *args.create_info = args
                .create_info
                .push_next(&mut buffer_device_address_create_info);
            // We also have access to the queue create infos if we need them.
            let _ = args.queue_create_infos;
        })),
    )
    .unwrap();

let (device, queue) = adapter
    .create_device_from_hal(hal_device, &wgpu::DeviceDescriptor { .. })
    .unwrap();
```

By @Vecvec in [#7829](https://github.com/gfx-rs/wgpu/pull/7829).

### naga

- Added `no_std` support with default features disabled. By @Bushrat011899 in [#7585](https://github.com/gfx-rs/wgpu/pull/7585).
- [wgsl-in,ir] Add support for parsing rust-style doc comments via `naga::front::glsl::Frontend::new_with_options`. By @Vrixyz in [#6364](https://github.com/gfx-rs/wgpu/pull/6364).
- When emitting GLSL, Uniform and Storage Buffer memory layouts are now emitted even if no explicit binding is given. By @cloone8 in [#7579](https://github.com/gfx-rs/wgpu/pull/7579).
- Diagnostic rendering methods (i.e., `naga::{front::wgsl::ParseError,WithSpan}::emit_error_to_string_with_path`) now accept more types for their `path` argument via a new sealed `AsDiagnosticFilePath` trait. By @atlv24, @bushrat011899, and @ErichDonGubler in [#7643](https://github.com/gfx-rs/wgpu/pull/7643).
- Add support for [quad operations](https://www.w3.org/TR/WGSL/#quad-builtin-functions) (requires `SUBGROUP` feature to be enabled). By @dzamkov and @valaphee in [#7683](https://github.com/gfx-rs/wgpu/pull/7683).
- Add support for `atomicCompareExchangeWeak` in HLSL and GLSL backends. By @cryvosh in [#7658](https://github.com/gfx-rs/wgpu/pull/7658)

### General

- Add support for astc-sliced-3d feature. By @mehmetoguzderin in [#7577](https://github.com/gfx-rs/wgpu/issues/7577)
- Added `wgpu_hal::dx12::Adapter::as_raw()`. By @tronical in [##7852](https://github.com/gfx-rs/wgpu/pull/7852)
- Add support for rendering to slices of 3D texture views and single layered 2D-Array texture views (this requires `VK_KHR_maintenance1` which should be widely available on newer drivers). By @teoxoy in [#7596](https://github.com/gfx-rs/wgpu/pull/7596)
- Add extra acceleration structure vertex formats. By @Vecvec in [#7580](https://github.com/gfx-rs/wgpu/pull/7580).
- Add acceleration structure limits. By @Vecvec in [#7845](https://github.com/gfx-rs/wgpu/pull/7845).
- Add support for clip-distances feature for Vulkan and GL backends. By @dzamkov in [#7730](https://github.com/gfx-rs/wgpu/pull/7730)
- Added `wgpu_types::error::{ErrorType, WebGpuError}` for classification of errors according to WebGPU's [`GPUError`]'s classification scheme, and implement `WebGpuError` for existing errors. This allows users of `wgpu-core` to offload error classification onto the wgpu ecosystem, rather than having to do it themselves without sufficient information. By @ErichDonGubler in [#6547](https://github.com/gfx-rs/wgpu/pull/6547).

[`GPUError`]: https://www.w3.org/TR/webgpu/#gpuerror

### Bug Fixes

#### General

- Fix error message for sampler array limit. By @LPGhatguy in [#7704](https://github.com/gfx-rs/wgpu/pull/7704).
- Fix bug where using `BufferSlice::get_mapped_range_as_array_buffer()` on a buffer would prevent you from ever unmapping it. Note that this API has changed and is now `BufferView::as_uint8array()`.

#### naga

- naga now infers the correct binding layout when a resource appears only in an assignment to `_`. By @andyleiserson in [#7540](https://github.com/gfx-rs/wgpu/pull/7540).
- Implement `dot4U8Packed` and `dot4I8Packed` for all backends, using specialized intrinsics on SPIR-V, HLSL, and Metal if available, and polyfills everywhere else. By @robamler in [#7494](https://github.com/gfx-rs/wgpu/pull/7494), [#7574](https://github.com/gfx-rs/wgpu/pull/7574), and [#7653](https://github.com/gfx-rs/wgpu/pull/7653).
- Add polyfilled `pack4x{I,U}8Clamped` built-ins to all backends and WGSL frontend. By @ErichDonGubler in [#7546](https://github.com/gfx-rs/wgpu/pull/7546).
- Allow textureLoad's sample index arg to be unsigned. By @jimblandy in [#7625](https://github.com/gfx-rs/wgpu/pull/7625).
- Properly convert arguments to atomic operations. By @jimblandy in [#7573](https://github.com/gfx-rs/wgpu/pull/7573).
- Apply necessary automatic conversions to the `value` argument of `textureStore`. By @jimblandy in [#7567](https://github.com/gfx-rs/wgpu/pull/7567).
- Properly apply WGSL's automatic conversions to the arguments to texture sampling functions. By @jimblandy in [#7548](https://github.com/gfx-rs/wgpu/pull/7548).
- Properly evaluate `abs(most negative abstract int)`. By @jimblandy in [#7507](https://github.com/gfx-rs/wgpu/pull/7507).
- Generate vectorized code for `[un]pack4x{I,U}8[Clamp]` on SPIR-V and MSL 2.1+. By @robamler in [#7664](https://github.com/gfx-rs/wgpu/pull/7664).
- Fix typing for `select`, which had issues particularly with a lack of automatic type conversion. By @ErichDonGubler in [#7572](https://github.com/gfx-rs/wgpu/pull/7572).
- Allow scalars as the first argument of the `distance` built-in function. By @bernhl in [#7530](https://github.com/gfx-rs/wgpu/pull/7530).
- Don't panic when handling `f16` for pipeline constants, i.e., `override`s in WGSL. By @ErichDonGubler in [#7801](https://github.com/gfx-rs/wgpu/pull/7801).
- Prevent aliased ray queries crashing naga when writing SPIR-V out. By @Vecvec in [#7759](https://github.com/gfx-rs/wgpu/pull/7759).

#### DX12

- Get `vertex_index` & `instance_index` builtins working for indirect draws. By @teoxoy in [#7535](https://github.com/gfx-rs/wgpu/pull/7535)

#### Vulkan

- Fix OpenBSD compilation of `wgpu_hal::vulkan::drm`. By @ErichDonGubler in [#7810](https://github.com/gfx-rs/wgpu/pull/7810).
- Fix warnings for unrecognized present mode. By @Wumpf in [#7850](https://github.com/gfx-rs/wgpu/pull/7850).

#### Metal

- Remove extraneous main thread warning in `fn surface_capabilities()`. By @jamesordner in [#7692](https://github.com/gfx-rs/wgpu/pull/7692)

#### WebGPU

- Fix setting unclipped_depth. By @atlv24 in [#7841](https://github.com/gfx-rs/wgpu/pull/7841)
- Implement `on_submitted_work_done` for WebGPU backend. By @drewcrawford in [#7864](https://github.com/gfx-rs/wgpu/pull/7864)

### Changes

- Loosen Viewport validation requirements to match the [new specs](https://github.com/gpuweb/gpuweb/pull/5025). By @ebbdrop in [#7564](https://github.com/gfx-rs/wgpu/pull/7564)
- `wgpu` and `deno_webgpu` now use `wgpu-types::error::WebGpuError` to classify errors. Any changes here are likely to be regressions; please report them if you find them! By @ErichDonGubler in [#6547](https://github.com/gfx-rs/wgpu/pull/6547).

#### General

- Support BLAS compaction in wgpu. By @Vecvec in [#7285](https://github.com/gfx-rs/wgpu/pull/7285).
- Removed `MaintainBase` in favor of using `PollType`. By @waywardmonkeys in [#7508](https://github.com/gfx-rs/wgpu/pull/7508).
- The `destroy` functions for buffers and textures in wgpu-core are now infallible. Previously, they returned an error if called multiple times for the same object. This only affects the wgpu-core API; the wgpu API already allowed multiple `destroy` calls. By @andyleiserson in [#7686](https://github.com/gfx-rs/wgpu/pull/7686) and [#7720](https://github.com/gfx-rs/wgpu/pull/7720).
- Remove `CommandEncoder::build_acceleration_structures_unsafe_tlas` in favour of `as_hal` and apply
  simplifications allowed by this. By @Vecvec in [#7513](https://github.com/gfx-rs/wgpu/pull/7513)
- The type of the `size` parameter to `copy_buffer_to_buffer` has changed from `BufferAddress` to `impl Into<Option<BufferAddress>>`. This achieves the spec-defined behavior of the value being optional, while still accepting existing calls without changes. By @andyleiserson in [#7659](https://github.com/gfx-rs/wgpu/pull/7659).
- To bring wgpu's error reporting into compliance with the WebGPU specification, the error type returned from some functions has changed, and some errors may be raised at a different time than they were previously.
  - The error type returned by many methods on `CommandEncoder`, `RenderPassEncoder`, `ComputePassEncoder`, and `RenderBundleEncoder` has changed to `EncoderStateError` or `PassStateError`. These functions will return the `Ended` variant of these errors if called on an encoder that is no longer active. Reporting of all other errors is deferred until a call to `finish()`.
  - Variants holding a `CommandEncoderError` in the error enums `ClearError`, `ComputePassErrorInner`, `QueryError`, and `RenderPassErrorInner` have been replaced with variants holding an `EncoderStateError`.
  - The definition of `enum CommandEncoderError` has changed significantly, to reflect which errors can be raised by `CommandEncoder.finish()`. There are also some errors that no longer appear directly in `CommandEncoderError`, and instead appear nested within the `RenderPass` or `ComputePass` variants.
  - `CopyError` has been removed. Errors that were previously a `CopyError` are now a `CommandEncoderError` returned by `finish()`. (The detailed reasons for copies to fail were and still are described by `TransferError`, which was previously a variant of `CopyError`, and is now a variant of `CommandEncoderError`).

#### naga

- Mark `readonly_and_readwrite_storage_textures` & `packed_4x8_integer_dot_product` language extensions as implemented. By @teoxoy in [#7543](https://github.com/gfx-rs/wgpu/pull/7543)
- `naga::back::hlsl::Writer::new` has a new `pipeline_options` argument. `hlsl::PipelineOptions::default()` can be passed as a default. The `shader_stage` and `entry_point` members of `pipeline_options` can be used to write only a single entry point when using the HLSL and MSL backends (GLSL and SPIR-V already had this functionality). The Metal and DX12 HALs now write only a single entry point when loading shaders. By @andyleiserson in [#7626](https://github.com/gfx-rs/wgpu/pull/7626).
- Implemented `early_depth_test` for SPIR-V backend, enabling `SHADER_EARLY_DEPTH_TEST` for Vulkan. Additionally, fixed conservative depth optimizations when using `early_depth_test`. The syntax for forcing early depth tests is now `@early_depth_test(force)` instead of `@early_depth_test`. By @dzamkov in [#7676](https://github.com/gfx-rs/wgpu/pull/7676).
- `ImplementedLanguageExtension::VARIANTS` is now implemented manually rather than derived using `strum` (allowing `strum` to become a dev-only dependency) so it is no longer a member of the `strum::VARIANTS` trait. Unless you are using this trait as a bound this should have no effect.
- Compaction changes, by @andyleiserson in [#7703](https://github.com/gfx-rs/wgpu/pull/7703):
  - [`process_overrides`](https://docs.rs/naga/latest/naga/back/pipeline_constants/fn.process_overrides.html) now compacts the module to remove unused items. It is no longer necessary to supply values for overrides that are not used by the active entry point.
  - The `compact` Cargo feature has been removed. It is no longer possible to exclude compaction support from the build.
  - [`compact`](https://docs.rs/naga/latest/naga/compact/fn.compact.html) now has an additional argument that specifies whether to remove unused functions, globals, and named types and overrides. For the previous behavior, pass `KeepUnused::Yes`.

#### D3D12

- Remove the need for dxil.dll. By @teoxoy in [#7566](https://github.com/gfx-rs/wgpu/pull/7566)
- Ability to get the raw `IDXGIFactory4` from `Instance`. By @MendyBerger in [#7827](https://github.com/gfx-rs/wgpu/pull/7827)

#### Vulkan

- Use highest SPIR-V version supported by Vulkan API version. By @robamler in [#7595](https://github.com/gfx-rs/wgpu/pull/7595)

#### HAL

- Added initial `no_std` support to `wgpu-hal`. By @bushrat011899 in [#7599](https://github.com/gfx-rs/wgpu/pull/7599)

### Documentation

#### General

- Remove outdated information about `Adapter::request_device`. By @tesselode in [#7768](https://github.com/gfx-rs/wgpu/pull/7768)

## v25.0.2 (2025-05-24)

### Bug Fixes

#### General

- Fix a possible deadlock within `Queue::write_buffer`. By @RedMindZ in [#7582](https://github.com/gfx-rs/wgpu/pull/7582)
- Fix `raw-window-handle` dependency being too lenient. By @kpreid in [#7526](https://github.com/gfx-rs/wgpu/pull/7526)

#### WebGPU

- Insert fragment pipeline constants into fragment descriptor instead of vertex descriptor. By @DerSchmale in [#7621](https://github.com/gfx-rs/wgpu/pull/7621)

## v25.0.1 (2025-04-11)

### Bug Fixes

- Fix typos in various documentation. By @waywardmonkeys in [#7510](https://github.com/gfx-rs/wgpu/pull/7510).
- Fix compile error when building with `profiling/profile-with-*` feature enabled. By @waywardmonkeys in [#7509](https://github.com/gfx-rs/wgpu/pull/7509).
- Use `once_cell::race::OnceBox` instead of `std::sync::LazyLock` to allow `naga::proc::Namer::default()` to be available without backend features being enabled. By @cwfitzgerald in [#7517](https://github.com/gfx-rs/wgpu/pull/7517).

#### DX12

- Fix validation error when creating a non-mappable buffer using the committed allocation scheme. By @cwfitzgerald and @ErichDonGubler in [#7519](https://github.com/gfx-rs/wgpu/pull/7519).

## v25.0.0 (2025-04-10)

### Major Features

#### Hashmaps Removed from APIs

Both `PipelineCompilationOptions::constants` and `ShaderSource::Glsl::defines` now take
slices of key-value pairs instead of `hashmap`s. This is to prepare for `no_std`
support and allow us to keep which `hashmap` hasher and such as implementation details. It
also allows more easily creating these structures inline.

By @cwfitzgerald in [#7133](https://github.com/gfx-rs/wgpu/pull/7133)

#### All Backends Now Have Features

Previously, the `vulkan` and `gles` backends were non-optional on windows, linux, and android and there was no way to disable them. We have now figured out how to properly make them disablable! Additionally, if you turn on the `webgl` feature, you will only get the GLES backend on WebAssembly, it won't leak into native builds, like previously it might have.

> [!WARNING]
> If you use wgpu with `default-features = false` and you want to retain the `vulkan` and `gles` backends, you will need to add them to your feature list.
>
> ```diff
> -wgpu = { version = "24", default-features = false, features = ["metal", "wgsl", "webgl"] }
> +wgpu = { version = "25", default-features = false, features = ["metal", "wgsl", "webgl", "vulkan", "gles"] }
> ```

By @cwfitzgerald in [#7076](https://github.com/gfx-rs/wgpu/pull/7076).

#### `device.poll` Api Reworked

This release reworked the poll api significantly to allow polling to return errors when polling hits internal timeout limits.

`Maintain` was renamed `PollType`. Additionally, `poll` now returns a result containing information about what happened during the poll.

```diff
-pub fn wgpu::Device::poll(&self, maintain: wgpu::Maintain) -> wgpu::MaintainResult
+pub fn wgpu::Device::poll(&self, poll_type: wgpu::PollType) -> Result<wgpu::PollStatus, wgpu::PollError>

-device.poll(wgpu::Maintain::Poll);
+device.poll(wgpu::PollType::Poll).unwrap();
```

```rust
pub enum PollType<T> {
    /// On wgpu-core based backends, block until the given submission has
    /// completed execution, and any callbacks have been invoked.
    ///
    /// On WebGPU, this has no effect. Callbacks are invoked from the
    /// window event loop.
    WaitForSubmissionIndex(T),
    /// Same as WaitForSubmissionIndex but waits for the most recent submission.
    Wait,
    /// Check the device for a single time without blocking.
    Poll,
}

pub enum PollStatus {
    /// There are no active submissions in flight as of the beginning of the poll call.
    /// Other submissions may have been queued on other threads during the call.
    ///
    /// This implies that the given Wait was satisfied before the timeout.
    QueueEmpty,

    /// The requested Wait was satisfied before the timeout.
    WaitSucceeded,

    /// This was a poll.
    Poll,
}

pub enum PollError {
    /// The requested Wait timed out before the submission was completed.
    Timeout,
}
```

> [!WARNING]
> As part of this change, WebGL's default behavior has changed. Previously `device.poll(Wait)` appeared as though it functioned correctly. This was a quirk caused by the bug that these PRs fixed. Now it will always return `Timeout` if the submission has not already completed. As many people rely on this behavior on WebGL, there is a new options in `BackendOptions`. If you want the old behavior, set the following on instance creation:
>
> ```rust
> instance_desc.backend_options.gl.fence_behavior = wgpu::GlFenceBehavior::AutoFinish;
> ```
>
> You will lose the ability to know exactly when a submission has completed, but `device.poll(Wait)` will behave the same as it does on native.

By @cwfitzgerald in [#6942](https://github.com/gfx-rs/wgpu/pull/6942) and [#7030](https://github.com/gfx-rs/wgpu/pull/7030).

#### `wgpu::Device::start_capture` renamed, documented, and made unsafe

```diff
- device.start_capture();
+ unsafe { device.start_graphics_debugger_capture() }
// Your code here
- device.stop_capture();
+ unsafe { device.stop_graphics_debugger_capture() }
```

There is now documentation to describe how this maps to the various debuggers' apis.

By @cwfitzgerald in [#7470](https://github.com/gfx-rs/wgpu/pull/7470)

##### Ensure loops generated by SPIR-V and HLSL naga backends are bounded

Make sure that all loops in shaders generated by these naga backends are bounded
to avoid undefined behaviour due to infinite loops. Note that this may have a
performance cost. As with the existing implementation for the MSL backend this
can be disabled by using `Device::create_shader_module_trusted()`.

By @jamienicol in [#6929](https://github.com/gfx-rs/wgpu/pull/6929) and [#7080](https://github.com/gfx-rs/wgpu/pull/7080).

#### Split up `Features` internally

Internally split up the `Features` struct and recombine them internally using a macro. There should be no breaking
changes from this. This means there are also namespaces (as well as the old `Features::*`) for all wgpu specific
features and webgpu feature (`FeaturesWGPU` and `FeaturesWebGPU` respectively) and `Features::from_internal_flags` which
allow you to be explicit about whether features you need are available on the web too.

By @Vecvec in [#6905](https://github.com/gfx-rs/wgpu/pull/6905), [#7086](https://github.com/gfx-rs/wgpu/pull/7086)

#### WebGPU compliant dual source blending feature

Previously, dual source blending was implemented with a `wgpu` native only feature flag and used a custom syntax in wgpu.
By now, dual source blending was added to the [WebGPU spec as an extension](https://www.w3.org/TR/webgpu/#dom-gpufeaturename-dual-source-blending).
We're now following suite and implement the official syntax.

Existing shaders using dual source blending need to be updated:

```diff
struct FragmentOutput{
-    @location(0) source0: vec4<f32>,
-    @location(0) @second_blend_source source1: vec4<f32>,
+    @location(0) @blend_src(0) source0: vec4<f32>,
+    @location(0) @blend_src(1) source1: vec4<f32>,
}

```

With that `wgpu::Features::DUAL_SOURCE_BLENDING` is now available on WebGPU.

Furthermore, GLSL shaders now support dual source blending as well via the `index` layout qualifier:

```c
layout(location = 0, index = 0) out vec4 output0;
layout(location = 0, index = 1) out vec4 output1;
```

By @wumpf in [#7144](https://github.com/gfx-rs/wgpu/pull/7144)

#### Unify interface for SpirV shader passthrough

Replace device `create_shader_module_spirv` function with a generic `create_shader_module_passthrough` function
taking a `ShaderModuleDescriptorPassthrough` enum as parameter.

Update your calls to `create_shader_module_spirv` and use `create_shader_module_passthrough` instead:

```diff
-    device.create_shader_module_spirv(
-        wgpu::ShaderModuleDescriptorSpirV {
-            label: Some(&name),
-            source: Cow::Borrowed(&source),
-        }
-    )
+    device.create_shader_module_passthrough(
+        wgpu::ShaderModuleDescriptorPassthrough::SpirV(
+            wgpu::ShaderModuleDescriptorSpirV {
+                label: Some(&name),
+                source: Cow::Borrowed(&source),
+            },
+        ),
+    )
```

By @syl20bnr in [#7326](https://github.com/gfx-rs/wgpu/pull/7326).

#### Noop Backend

It is now possible to create a dummy `wgpu` device even when no GPU is available. This may be useful for testing of code which manages graphics resources. Currently, it supports reading and writing buffers, and other resource types can be created but do nothing.

To use it, enable the `noop` feature of `wgpu`, and either call `Device::noop()`, or add `NoopBackendOptions { enable: true }` to the backend options of your `Instance` (this is an additional safeguard beyond the `Backends` bits).

By @kpreid in [#7063](https://github.com/gfx-rs/wgpu/pull/7063) and [#7342](https://github.com/gfx-rs/wgpu/pull/7342).

#### `SHADER_F16` feature is now available with naga shaders

Previously this feature only allowed you to use `f16` on SPIR-V passthrough shaders. Now you can use it on all shaders, including WGSL, SPIR-V, and GLSL!

```wgsl
enable f16;

fn hello_world(a: f16) -> f16 {
    return a + 1.0h;
}
```

By @FL33TW00D, @ErichDonGubler, and @cwfitzgerald in [#5701](https://github.com/gfx-rs/wgpu/pull/5701)

#### Bindless support improved and validation rules changed.

Metal support for bindless has significantly improved and the limits for binding arrays have been increased.

Previously, all resources inside binding arrays contributed towards the standard limit of their type (`texture_2d` arrays for example would contribute to `max_sampled_textures_per_shader_stage`). Now these resources will only contribute towards binding-array specific limits:

- `max_binding_array_elements_per_shader_stage` for all non-sampler resources
- `max_binding_array_sampler_elements_per_shader_stage` for sampler resources.

This change has allowed the metal binding array limits to go from between 32 and 128 resources, all the way 500,000 sampled textures. Additionally binding arrays are now bound more efficiently on Metal.

This change also enabled legacy Intel GPUs to support 1M bindless resources, instead of the previous 1800.

To facilitate this change, there was an additional validation rule put in place: if there is a binding array in a bind group, you may not use dynamic offset buffers or uniform buffers in that bind group. This requirement comes from vulkan rules on `UpdateAfterBind` descriptors.
By @cwfitzgerald in [#6811](https://github.com/gfx-rs/wgpu/pull/6811), [#6815](https://github.com/gfx-rs/wgpu/pull/6815), and [#6952](https://github.com/gfx-rs/wgpu/pull/6952).

### New Features

#### General

- Add `Buffer` methods corresponding to `BufferSlice` methods, so you can skip creating a `BufferSlice` when it offers no benefit, and `BufferSlice::slice()` for sub-slicing a slice. By @kpreid in [#7123](https://github.com/gfx-rs/wgpu/pull/7123).
- Add `BufferSlice::buffer()`, `BufferSlice::offset()` and `BufferSlice::size()`. By @kpreid in [#7148](https://github.com/gfx-rs/wgpu/pull/7148).
- Add `impl From<BufferSlice> for BufferBinding` and `impl From<BufferSlice> for BindingResource`, allowing `BufferSlice`s to be easily used in creating bind groups. By @kpreid in [#7148](https://github.com/gfx-rs/wgpu/pull/7148).
- Add `util::StagingBelt::allocate()` so the staging belt can be used to write textures. By @kpreid in [#6900](https://github.com/gfx-rs/wgpu/pull/6900).
- Added `CommandEncoder::transition_resources()` for native API interop, and allowing users to slightly optimize barriers. By @JMS55 in [#6678](https://github.com/gfx-rs/wgpu/pull/6678).
- Add `wgpu_hal::vulkan::Adapter::texture_format_as_raw` for native API interop. By @JMS55 in [#7228](https://github.com/gfx-rs/wgpu/pull/7228).
- Support getting vertices of the hit triangle when raytracing. By @Vecvec in [#7183](https://github.com/gfx-rs/wgpu/pull/7183).
- Add `as_hal` for both acceleration structures. By @Vecvec in [#7303](https://github.com/gfx-rs/wgpu/pull/7303).
- Add Metal compute shader passthrough. Use `create_shader_module_passthrough` on device. By @syl20bnr in [#7326](https://github.com/gfx-rs/wgpu/pull/7326).
- new `Features::MSL_SHADER_PASSTHROUGH` run-time feature allows providing pass-through MSL Metal shaders. By @syl20bnr in [#7326](https://github.com/gfx-rs/wgpu/pull/7326).
- Added mesh shader support to `wgpu_hal`. By @SupaMaggie70Incorporated in [#7089](https://github.com/gfx-rs/wgpu/pull/7089)

#### naga

- Add support for unsigned types when calling textureLoad with the level parameter. By @ygdrasil-io in [#7058](https://github.com/gfx-rs/wgpu/pull/7058).
- Support @must_use attribute on function declarations. By @turbocrime in [#6801](https://github.com/gfx-rs/wgpu/pull/6801).
- Support for generating the candidate intersections from AABB geometry, and confirming the hits. By @kvark in [#7047](https://github.com/gfx-rs/wgpu/pull/7047).
- Make naga::back::spv::Function::to_words write the OpFunctionEnd instruction in itself, instead of making another call after it. By @junjunjd in [#7156](https://github.com/gfx-rs/wgpu/pull/7156).
- Add support for texture memory barriers. By @Devon7925 in [#7173](https://github.com/gfx-rs/wgpu/pull/7173).
- Add polyfills for `unpackSnorm4x8`, `unpackUnorm4x8`, `unpackSnorm2x16`, `unpackUnorm2x16` for GLSL versions they aren't supported in. By @DJMcNab in [#7408](https://github.com/gfx-rs/wgpu/pull/7408).

#### Examples

- Added an example that shows how to handle datasets too large to fit in a single `GPUBuffer` by distributing it across many buffers, and then having the shader receive them as a `binding_array` of storage buffers. By @alphastrata in [#6138](https://github.com/gfx-rs/wgpu/pull/6138)

### Changes

#### General

- `wgpu::Instance::request_adapter()` now returns `Result` instead of `Option`; the error provides information about why no suitable adapter was returned. By @kpreid in [#7330](https://github.com/gfx-rs/wgpu/pull/7330).
- Support BLAS compaction in wgpu-hal. By @Vecvec in [#7101](https://github.com/gfx-rs/wgpu/pull/7101).
- Avoid using default features in many dependencies, etc. By Brody in [#7031](https://github.com/gfx-rs/wgpu/pull/7031)
- Use `hashbrown` to simplify no-std support. By Brody in [#6938](https://github.com/gfx-rs/wgpu/pull/6938) & [#6925](https://github.com/gfx-rs/wgpu/pull/6925).
- If you use Binding Arrays in a bind group, you may not use Dynamic Offset Buffers or Uniform Buffers in that bind group. By @cwfitzgerald in [#6811](https://github.com/gfx-rs/wgpu/pull/6811)
- Rename `instance_id` and `instance_custom_index` to `instance_index` and `instance_custom_data` by @Vecvec in
  [#6780](https://github.com/gfx-rs/wgpu/pull/6780)

#### naga

- naga IR types are now available in the module `naga::ir` (e.g. `naga::ir::Module`).
  The original names (e.g. `naga::Module`) remain present for compatibility.
  By @kpreid in [#7365](https://github.com/gfx-rs/wgpu/pull/7365).
- Refactored `use` statements to simplify future `no_std` support. By @bushrat011899 in [#7256](https://github.com/gfx-rs/wgpu/pull/7256)
- naga's WGSL frontend no longer allows using the `&` operator to take the address of a component of a vector,
  which is not permitted by the WGSL specification. By @andyleiserson in [#7284](https://github.com/gfx-rs/wgpu/pull/7284)
- naga's use of `termcolor` and `stderr` are now optional behind features of the same names. By @bushrat011899 in [#7482](https://github.com/gfx-rs/wgpu/pull/7482)

#### Vulkan

##### HAL queue callback support

- Add a way to notify with `Queue::submit()` to Vulkan's `vk::Semaphore` allocated outside of wgpu. By @sotaroikeda in [#6813](https://github.com/gfx-rs/wgpu/pull/6813).

### Bug Fixes

#### naga

- Fix some instances of functions which have a return type but don't return a value being incorrectly validated. By @jamienicol in [#7013](https://github.com/gfx-rs/wgpu/pull/7013).
- Allow abstract expressions to be used in WGSL function return statements. By @jamienicol in [#7035](https://github.com/gfx-rs/wgpu/pull/7035).
- Error if structs have two fields with the same name. By @SparkyPotato in [#7088](https://github.com/gfx-rs/wgpu/pull/7088).
- Forward '--keep-coordinate-space' flag to GLSL backend in naga-cli. By @cloone8 in [#7206](https://github.com/gfx-rs/wgpu/pull/7206).
- Allow template lists to have a trailing comma. By @KentSlaney in [#7142](https://github.com/gfx-rs/wgpu/pull/7142).
- Allow WGSL const declarations to have abstract types. By @jamienicol in [#7055](https://github.com/gfx-rs/wgpu/pull/7055) and [#7222](https://github.com/gfx-rs/wgpu/pull/7222).
- Allows override-sized arrays to resolve to the same size without causing the type arena to panic. By @KentSlaney in [#7082](https://github.com/gfx-rs/wgpu/pull/7082).
- Allow abstract types to be used for WGSL switch statement selector and case selector expressions. By @jamienicol in [#7250](https://github.com/gfx-rs/wgpu/pull/7250).
- Apply automatic conversions to `let` declarations, and accept `vecN()` as a constructor for vectors (in any context). By @andyleiserson in [#7367](https://github.com/gfx-rs/wgpu/pull/7367).
- The `&&` and `||` operators are no longer allowed on vectors. By @andyleiserson in [#7368](https://github.com/gfx-rs/wgpu/pull/7368).
- Prevent ray intersection function overwriting each other. By @Vecvec in [#7497](https://github.com/gfx-rs/wgpu/pull/7497).
- Require that the level operand of an ImageQuery::Size expression is i32 or u32, per spec. By @jimblandy in [#7426](https://github.com/gfx-rs/wgpu/pull/7426).
- Implement constant evaluation for the cross builtin. By @jimblandy in [#7404](https://github.com/gfx-rs/wgpu/pull/7404).
- Properly handle automatic type conversions in calls to `MathFunction` builtins. By @jimblandy in [#6833](https://github.com/gfx-rs/wgpu/pull/6833).

#### General

- Fix some validation errors when building acceleration
  structures. By @Vecvec in [#7486](https://github.com/gfx-rs/wgpu/pull/7486).
- Avoid overflow in query set bounds check validation. By @ErichDonGubler in [#6933](https://github.com/gfx-rs/wgpu/pull/6933).
- Add Flush to GL Queue::submit. By @cwfitzgerald in [#6941](https://github.com/gfx-rs/wgpu/pull/6941).
- Reduce downlevel `max_color_attachments` limit from 8 to 4 for better GLES compatibility. By @adrian17 in [#6994](https://github.com/gfx-rs/wgpu/pull/6994).
- Fix building a BLAS with a transform buffer by adding a flag to indicate usage of the transform buffer. By @Vecvec in
  [#7062](https://github.com/gfx-rs/wgpu/pull/7062).
- Move incrementation of `Device::last_acceleration_structure_build_command_index` into queue submit. By @Vecvec in [#7462](https://github.com/gfx-rs/wgpu/pull/7462).
- Implement indirect draw validation. By @teoxoy in [#7140](https://github.com/gfx-rs/wgpu/pull/7140)

#### Vulkan

- Stop naga causing undefined behavior when a ray query misses. By @Vecvec in [#6752](https://github.com/gfx-rs/wgpu/pull/6752).
- In naga's SPIR-V backend, avoid duplicating SPIR-V OpTypePointer instructions. By @jimblandy in [#7246](https://github.com/gfx-rs/wgpu/pull/7246).

#### Gles

- Support OpenHarmony render with `gles`. By @richerfu in [#7085](https://github.com/gfx-rs/wgpu/pull/7085)

#### Dx12

- Fix HLSL storage format generation. By @Vecvec in [#6993](https://github.com/gfx-rs/wgpu/pull/6993) and [#7104](https://github.com/gfx-rs/wgpu/pull/7104)
- Fix 3D storage texture bindings. By @SparkyPotato in [#7071](https://github.com/gfx-rs/wgpu/pull/7071)
- Fix DX12 composite alpha modes. By @amrbashir in [#7117](https://github.com/gfx-rs/wgpu/pull/7117)
- Bound check dynamic buffers. By @teoxoy in [#6931](https://github.com/gfx-rs/wgpu/pull/6931)
- Fix size of buffer. By @teoxoy in [#7310](https://github.com/gfx-rs/wgpu/pull/7310)

#### WebGPU

- Improve efficiency of dropping read-only buffer mappings. By @kpreid in [#7007](https://github.com/gfx-rs/wgpu/pull/7007).

### Performance

#### naga

- Replace `unicode-xid` with `unicode-ident`. By @CrazyboyQCD in [#7135](https://github.com/gfx-rs/wgpu/pull/7135)

### Documentation

- Improved documentation around pipeline caches and `TextureBlitter`. By @DJMcNab in [#6978](https://github.com/gfx-rs/wgpu/pull/6978) and [#7003](https://github.com/gfx-rs/wgpu/pull/7003).
- Improved documentation of `PresentMode`, buffer mapping functions, memory alignment requirements, texture formats’ automatic conversions, and various types and constants. By @kpreid in [#7211](https://github.com/gfx-rs/wgpu/pull/7211) and [#7283](https://github.com/gfx-rs/wgpu/pull/7283).

- Added a hello window example. By @laycookie in [#6992](https://github.com/gfx-rs/wgpu/pull/6992).

### Examples

- Call `pre_present_notify()` before presenting. By @kjarosh in [#7074](https://github.com/gfx-rs/wgpu/pull/7074).

## v24.0.5 (2025-05-24)

### Bug Fixes

#### General

- Fix a possible deadlock within `Queue::write_buffer`. By @RedMindZ in [#7582](https://github.com/gfx-rs/wgpu/pull/7582)

#### WebGPU

- Insert fragment pipeline constants into fragment descriptor instead of vertex descriptor. By @DerSchmale in [#7621](https://github.com/gfx-rs/wgpu/pull/7621)

## v24.0.4 (2025-04-03)

### Metal

- Use resize observers for smoother resizing. By @madsmtm in [#7026](https://github.com/gfx-rs/wgpu/pull/7026).

## v24.0.3 (2025-03-19)

### Bug Fixes

- Fix drop order in `Surface`, solving segfaults on exit on some systems. By @ed-2100 in [#6997](https://github.com/gfx-rs/wgpu/pull/6997)

## v24.0.2 (2025-02-26)

### Bug Fixes

- Fix GLES renderpass clears causing violation of `max_color_attachments` limit. By @adrian17 in [#6994](https://github.com/gfx-rs/wgpu/pull/6994).
- Fix a possible deadlock within `Queue::write_texture`. By @metamuffin in [#7004](https://github.com/gfx-rs/wgpu/pull/7004)
- Decrement `max_storage_buffer_binding_size` by 1 to match `max_buffer_size`. By @minus1ms in [#7217](https://github.com/gfx-rs/wgpu/pull/7217)

## v24.0.1 (2025-01-22)

### Bug Fixes

- Fix `wgpu` not building with `--no-default-features` on when targeting `wasm32-unknown-unknown`. By @wumpf in [#6946](https://github.com/gfx-rs/wgpu/pull/6946).
- Implement `Clone` on `ShaderModule`. By @a1phyr in [#6937](https://github.com/gfx-rs/wgpu/pull/6937).
- Fix `CopyExternalImageDestInfo` not exported on `wgpu`. By @wumpf in [#6962](https://github.com/gfx-rs/wgpu/pull/6962).

## v24.0.0 (2025-01-15)

### Major changes

#### Refactored Dispatch Between `wgpu-core` and `webgpu`

The crate `wgpu` has two different "backends", one which targets webgpu in the browser, one which targets `wgpu_core` on native platforms and webgl. This was previously very difficult to traverse and add new features to. The entire system was refactored to make it simpler. Additionally the new system has zero overhead if there is only one "backend" in use. You can see the new system in action by using go-to-definition on any wgpu functions in your IDE.

By @cwfitzgerald in [#6619](https://github.com/gfx-rs/wgpu/pull/6619).

#### Most objects in `wgpu` are now `Clone`

All types in the `wgpu` API are now `Clone`.
This is implemented with internal reference counting, so cloning for instance a `Buffer` does copies only the "handle" of the GPU buffer, not the underlying resource.

Previously, libraries using `wgpu` objects like `Device`, `Buffer` or `Texture` etc. often had to manually wrap them in a `Arc` to allow passing between libraries.
This caused a lot of friction since if one library wanted to use a `Buffer` by value, calling code had to give up ownership of the resource which may interfere with other subsystems.
Note that this also mimics how the WebGPU javascript API works where objects can be cloned and moved around freely.

By @cwfitzgerald in [#6665](https://github.com/gfx-rs/wgpu/pull/6665).

#### Render and Compute Passes Now Properly Enforce Their Lifetime

A regression introduced in 23.0.0 caused lifetimes of render and compute passes to be incorrectly enforced. While this is not
a soundness issue, the intent is to move an error from runtime to compile time. This issue has been fixed and restored to the 22.0.0 behavior.

#### Bindless (`binding_array`) Grew More Capabilities

- DX12 now supports `PARTIALLY_BOUND_BINDING_ARRAY` on Resource Binding Tier 3 Hardware. This is most D3D12 hardware [D3D12 Feature Table] for more information on what hardware supports this feature. By @cwfitzgerald in [#6734](https://github.com/gfx-rs/wgpu/pull/6734).

[D3D12 Feature Table]: https://d3d12infodb.boolka.dev/FeatureTable.html

#### `Device::create_shader_module_unchecked` Renamed and Now Has Configuration Options

`create_shader_module_unchecked` became `create_shader_module_trusted`.

This allows you to customize which exact checks are omitted so that you can get the correct balance of performance and safety for your use case. Calling the function is still unsafe, but now can be used to skip certain checks only on certain builds.

This also allows users to disable the workarounds in the `msl-out` backend to prevent the compiler from optimizing infinite loops. This can have a big impact on performance, but is not recommended for untrusted shaders.

```diff
let desc: ShaderModuleDescriptor = include_wgsl!(...)
- let module = unsafe { device.create_shader_module_unchecked(desc) };
+ let module = unsafe { device.create_shader_module_trusted(desc, wgpu::ShaderRuntimeChecks::unchecked()) };
```

By @cwfitzgerald and @rudderbucky in [#6662](https://github.com/gfx-rs/wgpu/pull/6662).

#### `wgpu::Instance::new` now takes `InstanceDescriptor` by reference

Previously `wgpu::Instance::new` took `InstanceDescriptor` by value (which is overall fairly uncommon in wgpu).
Furthermore, `InstanceDescriptor` is now cloneable.

```diff
- let instance = wgpu::Instance::new(instance_desc);
+ let instance = wgpu::Instance::new(&instance_desc);
```

By @wumpf in [#6849](https://github.com/gfx-rs/wgpu/pull/6849).

#### Environment Variable Handling Overhaul

Previously how various bits of code handled reading settings from environment variables was inconsistent and unideomatic.
We have unified it to (`Type::from_env()` or `Type::from_env_or_default()`) and `Type::with_env` for all types.

```diff
- wgpu::util::backend_bits_from_env()
+ wgpu::Backends::from_env()

- wgpu::util::power_preference_from_env()
+ wgpu::PowerPreference::from_env()

- wgpu::util::dx12_shader_compiler_from_env()
+ wgpu::Dx12Compiler::from_env()

- wgpu::util::gles_minor_version_from_env()
+ wgpu::Gles3MinorVersion::from_env()

- wgpu::util::instance_descriptor_from_env()
+ wgpu::InstanceDescriptor::from_env_or_default()

- wgpu::util::parse_backends_from_comma_list(&str)
+ wgpu::Backends::from_comma_list(&str)
```

By @cwfitzgerald in [#6895](https://github.com/gfx-rs/wgpu/pull/6895)

#### Backend-specific instance options are now in separate structs

In order to better facilitate growing more interesting backend options, we have put them into individual structs. This allows users to more easily understand what options can be defaulted and which they care about. All of these new structs implement `from_env()` and delegate to their respective `from_env()` methods.

```diff
- let instance = wgpu::Instance::new(&wgpu::InstanceDescriptor {
-     backends: wgpu::Backends::all(),
-     flags: wgpu::InstanceFlags::default(),
-     dx12_shader_compiler: wgpu::Dx12Compiler::Dxc,
-     gles_minor_version: wgpu::Gles3MinorVersion::Automatic,
- });
+ let instance = wgpu::Instance::new(&wgpu::InstanceDescriptor {
+     backends: wgpu::Backends::all(),
+     flags: wgpu::InstanceFlags::default(),
+     backend_options: wgpu::BackendOptions {
+         dx12: wgpu::Dx12BackendOptions {
+             shader_compiler: wgpu::Dx12ShaderCompiler::Dxc,
+         },
+         gl: wgpu::GlBackendOptions {
+             gles_minor_version: wgpu::Gles3MinorVersion::Automatic,
+         },
+     },
+ });
```

If you do not need any of these options, or only need one backend's info use the `default()` impl to fill out the remaining feelds.

By @cwfitzgerald in [#6895](https://github.com/gfx-rs/wgpu/pull/6895)

#### The `diagnostic(…);` directive is now supported in WGSL

naga now parses `diagnostic(…);` directives according to the WGSL spec. This allows users to control certain lints, similar to Rust's `allow`, `warn`, and `deny` attributes. For example, in standard WGSL (but, notably, not naga yet—see <https://github.com/gfx-rs/wgpu/issues/4369>) this snippet would emit a uniformity error:

```wgsl
@group(0) @binding(0) var s : sampler;
@group(0) @binding(2) var tex : texture_2d<f32>;
@group(1) @binding(0) var<storage, read> ro_buffer : array<f32, 4>;

@fragment
fn main(@builtin(position) p : vec4f) -> @location(0) vec4f {
  if ro_buffer[0] == 0 {
    // Emits a derivative uniformity error during validation.
    return textureSample(tex, s, vec2(0.,0.));
  }

  return vec4f(0.);
}
```

…but we can now silence it with the `off` severity level, like so:

```wgsl
// Disable the diagnosic with this…
diagnostic(off, derivative_uniformity);

@group(0) @binding(0) var s : sampler;
@group(0) @binding(2) var tex : texture_2d<f32>;
@group(1) @binding(0) var<storage, read> ro_buffer : array<f32, 4>;

@fragment
fn main(@builtin(position) p : vec4f) -> @location(0) vec4f {
  if ro_buffer[0] == 0 {
    // Look ma, no error!
    return textureSample(tex, s, vec2(0.,0.));
  }

  return vec4f(0.);
}
```

There are some limitations to keep in mind with this new functionality:

- We support `@diagnostic(…)` rules as `fn` attributes, but prioritization for rules in statement positions (i.e., `if (…) @diagnostic(…) { … }` is unclear. If you are blocked by not being able to parse `diagnostic(…)` rules in statement positions, please let us know in <https://github.com/gfx-rs/wgpu/issues/5320>, so we can determine how to prioritize it!
- Standard WGSL specifies `error`, `warning`, `info`, and `off` severity levels. These are all technically usable now! A caveat, though: warning- and info-level are only emitted to `stderr` via the `log` façade, rather than being reported through a `Result::Err` in naga or the `CompilationInfo` interface in `wgpu{,-core}`. This will require breaking changes in naga to fix, and is being tracked by <https://github.com/gfx-rs/wgpu/issues/6458>.
- Not all lints can be controlled with `diagnostic(…)` rules. In fact, only the `derivative_uniformity` triggering rule exists in the WGSL standard. That said, naga contributors are excited to see how this level of control unlocks a new ecosystem of configurable diagnostics.
- Finally, `diagnostic(…)` rules are not yet emitted in WGSL output. This means that `wgsl-in` → `wgsl-out` is currently a lossy process. We felt that it was important to unblock users who needed `diagnostic(…)` rules (i.e., <https://github.com/gfx-rs/wgpu/issues/3135>) before we took significant effort to fix this (tracked in <https://github.com/gfx-rs/wgpu/issues/6496>).

By @ErichDonGubler in [#6456](https://github.com/gfx-rs/wgpu/pull/6456), [#6148](https://github.com/gfx-rs/wgpu/pull/6148), [#6533](https://github.com/gfx-rs/wgpu/pull/6533), [#6353](https://github.com/gfx-rs/wgpu/pull/6353), [#6537](https://github.com/gfx-rs/wgpu/pull/6537).

#### New Features

##### naga

- Support atomic operations on fields of global structs in the SPIR-V frontend. By @schell in [#6693](https://github.com/gfx-rs/wgpu/pull/6693).
- Clean up tests for atomic operations support in SPIR-V frontend. By @schell in [#6692](https://github.com/gfx-rs/wgpu/pull/6692)
- Fix an issue where `naga` CLI would incorrectly skip the first positional argument when `--stdin-file-path` was specified. By @ErichDonGubler in [#6480](https://github.com/gfx-rs/wgpu/pull/6480).
- Fix textureNumLevels in the GLSL backend. By @magcius in [#6483](https://github.com/gfx-rs/wgpu/pull/6483).
- Support 64-bit hex literals and unary operations in constants [#6616](https://github.com/gfx-rs/wgpu/pull/6616).
- Implement `quantizeToF16()` for WGSL frontend, and WGSL, SPIR-V, HLSL, MSL, and GLSL backends. By @jamienicol in [#6519](https://github.com/gfx-rs/wgpu/pull/6519).
- Add support for GLSL `usampler*` and `isampler*`. By @DavidPeicho in [#6513](https://github.com/gfx-rs/wgpu/pull/6513).
- Expose Ray Query flags as constants in WGSL. Implement candidate intersections. By @kvark in [#5429](https://github.com/gfx-rs/wgpu/pull/5429)
- Add new vertex formats (`{U,S}{int,norm}{8,16}`, `Float16` and `Unorm8x4Bgra`). By @nolanderc in [#6632](https://github.com/gfx-rs/wgpu/pull/6632)
- Allow for override-expressions in `workgroup_size`. By @KentSlaney in [#6635](https://github.com/gfx-rs/wgpu/pull/6635).
- Add support for OpAtomicCompareExchange in SPIR-V frontend. By @schell in [#6590](https://github.com/gfx-rs/wgpu/pull/6590).
- Implement type inference for abstract arguments to user-defined functions. By @jamienicol in [#6577](https://github.com/gfx-rs/wgpu/pull/6577).
- Allow for override-expressions in array sizes. By @KentSlaney in [#6654](https://github.com/gfx-rs/wgpu/pull/6654).
- [`pointer_composite_access` WGSL language extension](https://www.w3.org/TR/WGSL/#language_extension-pointer_composite_access) is implemented. By @sagudev in [#6913](https://github.com/gfx-rs/wgpu/pull/6913)

##### General

- Add unified documentation for ray-tracing. By @Vecvec in [#6747](https://github.com/gfx-rs/wgpu/pull/6747)
- Return submission index in `map_async` and `on_submitted_work_done` to track down completion of async callbacks. By @eliemichel in [#6360](https://github.com/gfx-rs/wgpu/pull/6360).
- Move raytracing alignments into HAL instead of in core. By @Vecvec in [#6563](https://github.com/gfx-rs/wgpu/pull/6563).
- Allow for statically linking DXC rather than including separate `.dll` files. By @DouglasDwyer in [#6574](https://github.com/gfx-rs/wgpu/pull/6574).
- `DeviceType` and `AdapterInfo` now impl `Hash` by @cwfitzgerald in [#6868](https://github.com/gfx-rs/wgpu/pull/6868)
- Add build support for Apple Vision Pro. By @guusw in [#6611](https://github.com/gfx-rs/wgpu/pull/6611).
- Add `wgsl_language_features` for obtaining available WGSL language feature by @sagudev in [#6814](https://github.com/gfx-rs/wgpu/pull/6814)
- Image atomic support in shaders. By @atlv24 in [#6706](https://github.com/gfx-rs/wgpu/pull/6706)
- 64 bit image atomic support in shaders. By @atlv24 in [#5537](https://github.com/gfx-rs/wgpu/pull/5537)
- Add `no_std` support to `wgpu-types`. By @bushrat011899 in [#6892](https://github.com/gfx-rs/wgpu/pull/6892).

##### Vulkan

- Allow using some 32-bit floating-point atomic operations (load, store, add, sub, exchange) in shaders. It requires the extension `VK_EXT_shader_atomic_float`. By @AsherJingkongChen in [#6234](https://github.com/gfx-rs/wgpu/pull/6234).

##### Metal

- Allow using some 32-bit floating-point atomic operations (load, store, add, sub, exchange) in shaders. It requires Metal 3.0+ with Apple 7, 8, 9 or Mac 2. By @AsherJingkongChen in [#6234](https://github.com/gfx-rs/wgpu/pull/6234).
- Add build support for Apple Vision Pro. By @guusw in [#6611](https://github.com/gfx-rs/wgpu/pull/6611).
- Add `raw_handle` method to access raw Metal textures in [#6894](https://github.com/gfx-rs/wgpu/pull/6894).

#### D3D12

- Support DXR (DirectX Ray-tracing) in wgpu-hal. By @Vecvec in [#6777](https://github.com/gfx-rs/wgpu/pull/6777)

#### Changes

##### naga

- Show types of LHS and RHS in binary operation type mismatch errors. By @ErichDonGubler in [#6450](https://github.com/gfx-rs/wgpu/pull/6450).
- The GLSL parser now uses less expressions for function calls. By @magcius in [#6604](https://github.com/gfx-rs/wgpu/pull/6604).
- Add a note to help with a common syntax error case for global diagnostic filter directives. By @e-hat in [#6718](https://github.com/gfx-rs/wgpu/pull/6718)
- Change arithmetic operations between two i32 variables to wrap on overflow to match WGSL spec. By @matthew-wong1 in [#6835](https://github.com/gfx-rs/wgpu/pull/6835).
- Add directives to suggestions in error message for parsing global items. By @e-hat in [#6723](https://github.com/gfx-rs/wgpu/pull/6723).
- Automatic conversion for `override` initializers. By @sagudev in [6920](https://github.com/gfx-rs/wgpu/pull/6920)

##### General

- Align Storage Access enums to the webgpu spec. By @atlv24 in [#6642](https://github.com/gfx-rs/wgpu/pull/6642)
- Make `Surface::as_hal` take an immutable reference to the surface. By @jerzywilczek in [#9999](https://github.com/gfx-rs/wgpu/pull/9999)
- Add actual sample type to `CreateBindGroupError::InvalidTextureSampleType` error message. By @ErichDonGubler in [#6530](https://github.com/gfx-rs/wgpu/pull/6530).
- Improve binding error to give a clearer message when there is a mismatch between resource binding as it is in the shader and as it is in the binding layout. By @eliemichel in [#6553](https://github.com/gfx-rs/wgpu/pull/6553).
- `Surface::configure` and `Surface::get_current_texture` are no longer fatal. By @alokedesai in [#6253](https://github.com/gfx-rs/wgpu/pull/6253)
- Rename `BlasTriangleGeometry::index_buffer_offset` to `BlasTriangleGeometry::first_index`. By @Vecvec in [#6873](https://github.com/gfx-rs/wgpu/pull/6873/files)

##### D3D12

- Avoid using FXC as fallback when the DXC container was passed at instance creation. Paths to `dxcompiler.dll` & `dxil.dll` are also now required. By @teoxoy in [#6643](https://github.com/gfx-rs/wgpu/pull/6643).

##### Vulkan

- Add a cache for samplers, deduplicating any samplers, allowing more programs to stay within the global sampler limit. By @cwfitzgerald in [#6847](https://github.com/gfx-rs/wgpu/pull/6847)

##### HAL

- Replace `usage: Range<T>`, for `BufferUses`, `TextureUses`, and `AccelerationStructureBarrier` with a new `StateTransition<T>`. By @atlv24 in [#6703](https://github.com/gfx-rs/wgpu/pull/6703)
- Change the `DropCallback` API to use `FnOnce` instead of `FnMut`. By @jerzywilczek in [#6482](https://github.com/gfx-rs/wgpu/pull/6482)

### Bug Fixes

#### General

- Handle query set creation failure as an internal error that loses the `Device`, rather than panicking. By @ErichDonGubler in [#6505](https://github.com/gfx-rs/wgpu/pull/6505).
- Ensure that `Features::TIMESTAMP_QUERY` is set when using timestamp writes in render and compute passes. By @ErichDonGubler in [#6497](https://github.com/gfx-rs/wgpu/pull/6497).
- Check for device mismatches when beginning render and compute passes. By @ErichDonGubler in [#6497](https://github.com/gfx-rs/wgpu/pull/6497).
- Lower `QUERY_SET_MAX_QUERIES` (and enforced limits) from 8192 to 4096 to match WebGPU spec. By @ErichDonGubler in [#6525](https://github.com/gfx-rs/wgpu/pull/6525).
- Allow non-filterable float on texture bindings never used with samplers when using a derived bind group layout. By @ErichDonGubler in [#6531](https://github.com/gfx-rs/wgpu/pull/6531/).
- Replace potentially unsound usage of `PreHashedMap` with `FastHashMap`. By @jamienicol in [#6541](https://github.com/gfx-rs/wgpu/pull/6541).
- Add missing validation for timestamp writes in compute and render passes. By @ErichDonGubler in [#6578](https://github.com/gfx-rs/wgpu/pull/6578), [#6583](https://github.com/gfx-rs/wgpu/pull/6583).
  - Check the status of the `TIMESTAMP_QUERY` feature before other validation.
  - Check that indices are in-bounds for the query set.
  - Check that begin and end indices are not equal.
  - Check that at least one index is specified.
- Reject destroyed buffers in query set resolution. By @ErichDonGubler in [#6579](https://github.com/gfx-rs/wgpu/pull/6579).
- Fix panic when dropping `Device` on some environments. By @Dinnerbone in [#6681](https://github.com/gfx-rs/wgpu/pull/6681).
- Reduced the overhead of command buffer validation. By @nical in [#6721](https://github.com/gfx-rs/wgpu/pull/6721).
- Set index type to NONE in `get_acceleration_structure_build_sizes`. By @Vecvec in [#6802](https://github.com/gfx-rs/wgpu/pull/6802).
- Fix `wgpu-info` not showing dx12 adapters. By @wumpf in [#6844](https://github.com/gfx-rs/wgpu/pull/6844).
- Use `transform_buffer_offset` when initialising `transform_buffer`. By @Vecvec in [#6864](https://github.com/gfx-rs/wgpu/pull/6864).

#### naga

- Fix crash when a texture argument is missing. By @aedm in [#6486](https://github.com/gfx-rs/wgpu/pull/6486)
- Emit an error in constant evaluation, rather than crash, in certain cases where `vecN` constructors have less than N arguments. By @ErichDonGubler in [#6508](https://github.com/gfx-rs/wgpu/pull/6508).
- Fix an error in template list matching `>=` in `a<b>=c`. By @KentSlaney in [#6898](https://github.com/gfx-rs/wgpu/pull/6898).
- Correctly validate handles in override-sized array types. By @jimblandy in [#6882](https://github.com/gfx-rs/wgpu/pull/6882).
- Clean up validation of `Statement::ImageStore`. By @jimblandy in [#6729](https://github.com/gfx-rs/wgpu-pull/6729).
- In compaction, avoid cloning the type arena. By @jimblandy in [#6790](https://github.com/gfx-rs/wgpu-pull/6790)
- In validation, forbid cycles between global expressions and types. By @jimblandy in [#6800](https://github.com/gfx-rs/wgpu-pull/6800)
- Allow abstract scalars in modf and frexp results. By @jimblandy in [#6821](https://github.com/gfx-rs/wgpu-pull/6821)
- In the WGSL front end, apply automatic conversions to values being assigned. By @jimblandy in [#6822](https://github.com/gfx-rs/wgpu-pull/6822)
- Fix a leak by ensuring that types that depend on expressions are correctly compacted. By @KentSlaney in [#6934](https://github.com/gfx-rs/wgpu/pull/6934).

#### Vulkan

- Allocate descriptors for acceleration structures. By @Vecvec in [#6861](https://github.com/gfx-rs/wgpu/pull/6861).
- `max_color_attachment_bytes_per_sample` is now correctly set to 128. By @cwfitzgerald in [#6866](https://github.com/gfx-rs/wgpu/pull/6866)

#### D3D12

- Fix no longer showing software rasterizer adapters. By @wumpf in [#6843](https://github.com/gfx-rs/wgpu/pull/6843).
- `max_color_attachment_bytes_per_sample` is now correctly set to 128. By @cwfitzgerald in [#6866](https://github.com/gfx-rs/wgpu/pull/6866)

### Examples

- Add multiple render targets example. By @kaphula in [#5297](https://github.com/gfx-rs/wgpu/pull/5313)

### Testing

- Tests the early returns in the acceleration structure build calls with empty calls. By @Vecvec in [#6651](https://github.com/gfx-rs/wgpu/pull/6651).

## 23.0.1 (2024-11-25)

This release includes patches for `wgpu`, `wgpu-core` and `wgpu-hal`. All other crates remain at [23.0.0](https://github.com/gfx-rs/wgpu/releases/tag/v23.0.0).
Below changes were cherry-picked from 24.0.0 development line.

### Bug fixes

#### General

- Fix Texture view leaks regression. By @xiaopengli89 in [#6576](https://github.com/gfx-rs/wgpu/pull/6576)

#### Metal

- Fix surface creation crashing on iOS. By @mockersf in [#6535](https://github.com/gfx-rs/wgpu/pull/6535)

#### Vulkan

- Fix surface capabilities being advertised when its query failed. By @wumpf in [#6510](https://github.com/gfx-rs/wgpu/pull/6510)

## 23.0.0 (2024-10-25)

### Themes of this release

This release's theme is one that is likely to repeat for a few releases: convergence with the WebGPU specification! wgpu's design and base functionality are actually determined by two specifications: one for WebGPU, and one for the WebGPU Shading Language.

This may not sound exciting, but let us convince you otherwise! All major web browsers have committed to offering WebGPU in their environment. Even JS runtimes like [Node][nodejs-webgpu-interest] and [Deno][deno_webgpu-crate-manifest] have communities that are very interested in providing WebGPU! WebGPU is slowly [eating the world][eat-the-world-meaning], as it were. 😀 It's really important, then, that WebGPU implementations behave in ways that one would expect across all platforms. For example, if Firefox's WebGPU implementation were to break when running scripts and shaders that worked just fine in Chrome, that would mean sad users for both application authors _and_ browser authors.

[nodejs-webgpu-interest]: https://github.com/orgs/nodejs/discussions/41994
[deno_webgpu-crate-manifest]: https://github.com/gfx-rs/wgpu/tree/64a61ee5c69569bbb3db03563997e88a229eba17/deno_webgpu#deno_webgpu
[eat-the-world-meaning]: https://www.quora.com/What-did-Marc-Andreessen-mean-when-he-said-that-software-is-eating-the-world

wgpu also benefits from standard, portable behavior in the same way as web browsers. Because of this behavior, it's generally fairly easy to port over usage of WebGPU in JavaScript to wgpu. It is also what lets wgpu go full circle: wgpu can be an implementation of WebGPU on native targets, but _also_ it can use _other implementations of WebGPU_ as a backend in JavaScript when compiled to WASM. Therefore, the same dynamic applies: if wgpu's own behavior were significantly different, then wgpu and end users would be _sad, sad humans_ as soon as they discover places where their nice apps are breaking, right?

The answer is: yes, we _do_ have sad, sad humans that really want their wgpu code to work _everywhere_. As Firefox and others use wgpu to implement WebGPU, the above example of Firefox diverging from standard is, unfortunately, today's reality. It _mostly_ behaves the same as a standards-compliant WebGPU, but it still doesn't in many important ways. Of particular note is naga, its implementation of the WebGPU Shader Language. Shaders are pretty much a black-and-white point of failure in GPU programming; if they don't compile, then you can't use the rest of the API! And yet, it's extremely easy to run into a case like that from <https://github.com/gfx-rs/wgpu/issues/4400>:

```wgsl
fn gimme_a_float() -> f32 {
  return 42; // fails in naga, but standard WGSL happily converts to `f32`
}
```

We intend to continue making visible strides in converging with specifications for WebGPU and WGSL, as this release has. This is, unfortunately, one of the major reasons that wgpu has no plans to work hard at keeping a SemVer-stable interface for the foreseeable future; we have an entire platform of GPU programming functionality we have to catch up with, and SemVer stability is unfortunately in tension with that. So, for now, you're going to keep seeing major releases and breaking changes. Where possible, we'll try to make that painless, but compromises to do so don't always make sense with our limited resources.

This is also the last planned major version release of 2024; the next milestone is set for January 1st, 2025, according to our regular 12-week cadence (offset from the originally planned date of 2024-10-09 for _this_ release 😅). We'll see you next year!

### Contributor spotlight: @sagudev

This release, we'd like to spotlight the work of @sagudev, who has made significant contributions to the wgpu ecosystem this release. Among other things, they contributed a particularly notable feature where runtime-known indices are finally allowed for use with `const` array values. For example, this WGSL shader previously wasn't allowed:

```wgsl
const arr: array<u32, 4> = array(1, 2, 3, 4);

fn what_number_should_i_use(idx: u32) -> u32 {
  return arr[idx];
}
```

…but now it works! This is significant because this sort of shader rejection was one of the most impactful issues we are aware of for converging with the WGSL specification. There are more still to go—some of which we expect to even more drastically change how folks author shaders—but we suspect that many more will come in the next few releases, including with @sagudev's help.

We're excited for more of @sagudev's contributions via the Servo community. Oh, did we forget to mention that these contributions were motivated by their work on Servo? That's right, a _third_ well-known JavaScript runtime is now using wgpu to implement its WebGPU implementation. We're excited to support Servo to becoming another fully fledged browsing environment this way.

### Major Changes

In addition to the above spotlight, we have the following particularly interesting items to call out for this release:

#### `wgpu-core` is no longer generic over `wgpu-hal` backends

Dynamic dispatch between different backends has been moved from the user facing `wgpu` crate, to a new dynamic dispatch mechanism inside the backend abstraction layer `wgpu-hal`.

Whenever targeting more than a single backend (default on Windows & Linux) this leads to faster compile times and smaller binaries! This also solves a long standing issue with `cargo doc` failing to run for `wgpu-core`.

Benchmarking indicated that compute pass recording is slower as a consequence, whereas on render passes speed improvements have been observed. However, this effort simplifies many of the internals of the wgpu family of crates which we're hoping to build performance improvements upon in the future.

By @wumpf in [#6069](https://github.com/gfx-rs/wgpu/pull/6069), [#6099](https://github.com/gfx-rs/wgpu/pull/6099), [#6100](https://github.com/gfx-rs/wgpu/pull/6100).

#### `wgpu`'s resources no longer have `.global_id()` getters

`wgpu-core`'s internals no longer use nor need IDs and we are moving towards removing IDs completely. This is a step in that direction.

Current users of `.global_id()` are encouraged to make use of the `PartialEq`, `Eq`, `Hash`, `PartialOrd` and `Ord` traits that have now been implemented for `wgpu` resources.

By @teoxoy in [#6134](https://github.com/gfx-rs/wgpu/pull/6134).

#### `set_bind_group` now takes an `Option` for the bind group argument.

https://gpuweb.github.io/gpuweb/#programmable-passes-bind-groups specifies that bindGroup is nullable. This change is the start of implementing this part of the spec. Callers that specify a `Some()` value should have unchanged behavior. Handling of `None` values still needs to be implemented by backends.

For convenience, the `set_bind_group` on compute/render passes & encoders takes `impl Into<Option<&BindGroup>>`, so most code should still work the same.

By @bradwerth in [#6216](https://github.com/gfx-rs/wgpu/pull/6216).

#### `entry_point`s are now `Option`al

One of the changes in the WebGPU spec. (from [about this time last year][optional-entrypoint-in-spec] 😅) was to allow optional entry points in `GPUProgrammableStage`. In `wgpu`, this corresponds to a subset of fields in `FragmentState`, `VertexState`, and `ComputeState` as the `entry_point` member:

```wgsl
let render_pipeline = device.createRenderPipeline(wgpu::RenderPipelineDescriptor {
    module,
    entry_point: Some("cs_main"), // This is now `Option`al.
    // …
});

let compute_pipeline = device.createComputePipeline(wgpu::ComputePipelineDescriptor {
    module,
    entry_point: None, // This is now `Option`al.
    // …
});
```

When set to `None`, it's assumed that the shader only has a single entry point associated with the pipeline stage (i.e., `@compute`, `@fragment`, or `@vertex`). If there is not one and only one candidate entry point, then a validation error is returned. To continue the example, we might have written the above API usage with the following shader module:

```wgsl
// We can't use `entry_point: None` for compute pipelines with this module,
// because there are two `@compute` entry points.

@compute
fn cs_main() { /* … */ }

@compute
fn other_cs_main() { /* … */ }

// The following entry points _can_ be inferred from `entry_point: None` in a
// render pipeline, because they're the only `@vertex` and `@fragment` entry
// points:

@vertex
fn vs_main() { /* … */ }

@fragment
fn fs_main() { /* … */ }
```

[optional-entrypoint-in-spec]: https://github.com/gpuweb/gpuweb/issues/4342

#### wgpu's DX12 backend is now based on the `windows` crate ecosystem, instead of the `d3d12` crate

wgpu has retired the `d3d12` crate (based on `winapi`), and now uses the `windows` crate for interfacing with Windows. For many, this may not be a change that affects day-to-day work. However, for users who need to vet their dependencies, or who may vendor in dependencies, this may be a nontrivial migration.

By @MarijnS95 in [#6006](https://github.com/gfx-rs/wgpu/pull/6006).

### New Features

#### Wgpu

- Added initial acceleration structure and ray query support into wgpu. By @expenses @daniel-keitel @Vecvec @JMS55 @atlv24 in [#6291](https://github.com/gfx-rs/wgpu/pull/6291)

#### naga

- Support constant evaluation for `firstLeadingBit` and `firstTrailingBit` numeric built-ins in WGSL. Front-ends that translate to these built-ins also benefit from constant evaluation. By @ErichDonGubler in [#5101](https://github.com/gfx-rs/wgpu/pull/5101).
- Add `first` and `either` sampling types for `@interpolate(flat, …)` in WGSL. By @ErichDonGubler in [#6181](https://github.com/gfx-rs/wgpu/pull/6181).
- Support for more atomic ops in the SPIR-V frontend. By @schell in [#5824](https://github.com/gfx-rs/wgpu/pull/5824).
- Support local `const` declarations in WGSL. By @sagudev in [#6156](https://github.com/gfx-rs/wgpu/pull/6156).
- Implemented `const_assert` in WGSL. By @sagudev in [#6198](https://github.com/gfx-rs/wgpu/pull/6198).
- Support polyfilling `inverse` in WGSL. By @chyyran in [#6385](https://github.com/gfx-rs/wgpu/pull/6385).
- Add base support for parsing `requires`, `enable`, and `diagnostic` directives. No extensions or diagnostic filters are yet supported, but diagnostics have improved dramatically. By @ErichDonGubler in [#6352](https://github.com/gfx-rs/wgpu/pull/6352), [#6424](https://github.com/gfx-rs/wgpu/pull/6424), [#6437](https://github.com/gfx-rs/wgpu/pull/6437).
- Include error chain information as a message and notes in shader compilation messages. By @ErichDonGubler in [#6436](https://github.com/gfx-rs/wgpu/pull/6436).
- Unify naga CLI error output with the format of shader compilation messages. By @ErichDonGubler in [#6436](https://github.com/gfx-rs/wgpu/pull/6436).

#### General

- Add `VideoFrame` to `ExternalImageSource` enum. By @jprochazk in [#6170](https://github.com/gfx-rs/wgpu/pull/6170).
- Add `wgpu::util::new_instance_with_webgpu_detection` & `wgpu::util::is_browser_webgpu_supported` to make it easier to support WebGPU & WebGL in the same binary. By @wumpf in [#6371](https://github.com/gfx-rs/wgpu/pull/6371).

#### Vulkan

- Allow using [VK_GOOGLE_display_timing](https://registry.khronos.org/vulkan/specs/1.3-extensions/man/html/VK_GOOGLE_display_timing.html) unsafely with the `VULKAN_GOOGLE_DISPLAY_TIMING` feature. By @DJMcNab in [#6149](https://github.com/gfx-rs/wgpu/pull/6149).

#### Metal

- Implement `atomicCompareExchangeWeak`. By @AsherJingkongChen in [#6265](https://github.com/gfx-rs/wgpu/pull/6265).
- Unless an explicit `CAMetalLayer` is provided, surfaces now render to a sublayer. This improves resizing behavior, fixing glitches during on window resize. By @madsmtm in [#6107](https://github.com/gfx-rs/wgpu/pull/6107).

### Bug Fixes

- Fix incorrect hlsl image output type conversion. By @atlv24 in [#6123](https://github.com/gfx-rs/wgpu/pull/6123).

#### naga

- SPIR-V frontend splats depth texture sample and load results. Fixes [issue #4551](https://github.com/gfx-rs/wgpu/issues/4551). By @schell in [#6384](https://github.com/gfx-rs/wgpu/pull/6384).
- Accept only `vec3` (not `vecN`) for the `cross` built-in. By @ErichDonGubler in [#6171](https://github.com/gfx-rs/wgpu/pull/6171).
- Configure `SourceLanguage` when enabling debug info in SPV-out. By @kvark in [#6256](https://github.com/gfx-rs/wgpu/pull/6256).
- Do not consider per-polygon and flat inputs subgroup uniform. By @magcius in [#6276](https://github.com/gfx-rs/wgpu/pull/6276).
- Validate all swizzle components are either color (rgba) or dimension (xyzw) in WGSL. By @sagudev in [#6187](https://github.com/gfx-rs/wgpu/pull/6187).
- Fix detection of shl overflows to detect arithmetic overflows. By @sagudev in [#6186](https://github.com/gfx-rs/wgpu/pull/6186).
- Fix type parameters to vec/mat type constructors to also support aliases. By @sagudev in [#6189](https://github.com/gfx-rs/wgpu/pull/6189).
- Accept global `var`s without explicit type. By @sagudev in [#6199](https://github.com/gfx-rs/wgpu/pull/6199).
- Fix handling of phony statements, so they are actually emitted. By @sagudev in [#6328](https://github.com/gfx-rs/wgpu/pull/6328).
- Added `gl_DrawID` to glsl and `DrawIndex` to spv. By @ChosenName in [#6325](https://github.com/gfx-rs/wgpu/pull/6325).
- Matrices can now be indexed by value (#4337), and indexing arrays by value no longer causes excessive spilling (#6358). By @jimblandy in [#6390](https://github.com/gfx-rs/wgpu/pull/6390).
- Add support for `textureQueryLevels` to the GLSL parser. By @magcius in [#6325](https://github.com/gfx-rs/wgpu/pull/6415).
- Fix unescaped identifiers in the Metal backend shader I/O structures causing shader miscompilation. By @ErichDonGubler in [#6438](https://github.com/gfx-rs/wgpu/pull/6438).

#### General

- If GL context creation fails retry with GLES. By @Rapdorian in [#5996](https://github.com/gfx-rs/wgpu/pull/5996).
- Bump MSRV for `d3d12`/`naga`/`wgpu-core`/`wgpu-hal`/`wgpu-types`' to 1.76. By @wumpf in [#6003](https://github.com/gfx-rs/wgpu/pull/6003).
- Print requested and supported usages on `UnsupportedUsage` error. By @VladasZ in [#6007](https://github.com/gfx-rs/wgpu/pull/6007).
- Deduplicate bind group layouts that are created from pipelines with "auto" layouts. By @teoxoy [#6049](https://github.com/gfx-rs/wgpu/pull/6049).
- Document `wgpu_hal` bounds-checking promises, and adapt `wgpu_core`'s lazy initialization logic to the slightly weaker-than-expected guarantees. By @jimblandy in [#6201](https://github.com/gfx-rs/wgpu/pull/6201).
- Raise validation error instead of panicking in `{Render,Compute}Pipeline::get_bind_group_layout` on native / WebGL. By @bgr360 in [#6280](https://github.com/gfx-rs/wgpu/pull/6280).
- **BREAKING**: Remove the last exposed C symbols in project, located in `wgpu_core::render::bundle::bundle_ffi`, to allow multiple versions of wgpu to compile together. By @ErichDonGubler in [#6272](https://github.com/gfx-rs/wgpu/pull/6272).
- Call `flush_mapped_ranges` when unmapping write-mapped buffers. By @teoxoy in [#6089](https://github.com/gfx-rs/wgpu/pull/6089).
- When mapping buffers for reading, mark buffers as initialized only when they have `MAP_WRITE` usage. By @teoxoy in [#6178](https://github.com/gfx-rs/wgpu/pull/6178).
- Add a separate pipeline constants error. By @teoxoy in [#6094](https://github.com/gfx-rs/wgpu/pull/6094).
- Ensure safety of indirect dispatch by injecting a compute shader that validates the content of the indirect buffer. By @teoxoy in [#5714](https://github.com/gfx-rs/wgpu/pull/5714).
- Add conversions between `TextureFormat` and `StorageFormat`. By @caelunshun in [#6185](https://github.com/gfx-rs/wgpu/pull/6185)

#### GLES / OpenGL

- Fix GL debug message callbacks not being properly cleaned up (causing UB). By @Imberflur in [#6114](https://github.com/gfx-rs/wgpu/pull/6114).
- Fix calling `slice::from_raw_parts` with unaligned pointers in push constant handling. By @Imberflur in [#6341](https://github.com/gfx-rs/wgpu/pull/6341).
- Optimise fence checking when `Queue::submit` is called many times per frame. By @dinnerbone in [#6427](https://github.com/gfx-rs/wgpu/pull/6427).

#### WebGPU

- Fix JS `TypeError` exception in `Instance::request_adapter` when browser doesn't support WebGPU but `wgpu` not compiled with `webgl` support. By @bgr360 in [#6197](https://github.com/gfx-rs/wgpu/pull/6197).

#### Vulkan

- Avoid undefined behaviour with adversarial debug label. By @DJMcNab in [#6257](https://github.com/gfx-rs/wgpu/pull/6257).
- Add `.index_type(vk::IndexType::NONE_KHR)` when creating `AccelerationStructureGeometryTrianglesDataKHR` in the raytraced triangle example to prevent a validation error. By @Vecvec in [#6282](https://github.com/gfx-rs/wgpu/pull/6282).

### Changes

- `wgpu_hal::gles::Adapter::new_external` now requires the context to be current when dropping the adapter and related objects. By @Imberflur in [#6114](https://github.com/gfx-rs/wgpu/pull/6114).
- Reduce the amount of debug and trace logs emitted by wgpu-core and wgpu-hal. By @nical in [#6065](https://github.com/gfx-rs/wgpu/issues/6065).
- Rename `Rg11b10Float` to `Rg11b10Ufloat`. By @sagudev in [#6108](https://github.com/gfx-rs/wgpu/pull/6108).
- Invalidate the device when we encounter driver-induced device loss or on unexpected errors. By @teoxoy in [#6229](https://github.com/gfx-rs/wgpu/pull/6229).
- Make Vulkan error handling more robust. By @teoxoy in [#6119](https://github.com/gfx-rs/wgpu/pull/6119).
- Add bounds checking to Buffer slice method. By @beholdnec in [#6432](https://github.com/gfx-rs/wgpu/pull/6432).
- Replace `impl From<StorageFormat> for ScalarKind` with `impl From<StorageFormat> for Scalar` so that byte width is included. By @atlv24 in [#6451](https://github.com/gfx-rs/wgpu/pull/6451).

#### Internal

- Tracker simplifications. By @teoxoy in [#6073](https://github.com/gfx-rs/wgpu/pull/6073) & [#6088](https://github.com/gfx-rs/wgpu/pull/6088).
- D3D12 cleanup. By @teoxoy in [#6200](https://github.com/gfx-rs/wgpu/pull/6200).
- Use `ManuallyDrop` in remaining places. By @teoxoy in [#6092](https://github.com/gfx-rs/wgpu/pull/6092).
- Move out invalidity from the `Registry`. By @teoxoy in [#6243](https://github.com/gfx-rs/wgpu/pull/6243).
- Remove `backend` from ID. By @teoxoy in [#6263](https://github.com/gfx-rs/wgpu/pull/6263).

#### HAL

- Change the inconsistent `DropGuard` based API on Vulkan and GLES to a consistent, callback-based one. By @jerzywilczek in [#6164](https://github.com/gfx-rs/wgpu/pull/6164).

### Documentation

- Removed some OpenGL and Vulkan references from `wgpu-types` documentation. Fixed Storage texel types in examples. By @Nelarius in [#6271](https://github.com/gfx-rs/wgpu/pull/6271).
- Used `wgpu::include_wgsl!(…)` more in examples and tests. By @ErichDonGubler in [#6326](https://github.com/gfx-rs/wgpu/pull/6326).

### Dependency Updates

#### GLES

- Replace `winapi` code in WGL wrapper to use the `windows` crate. By @MarijnS95 in [#6006](https://github.com/gfx-rs/wgpu/pull/6006).
- Update `glutin` to `0.31` with `glutin-winit` crate. By @MarijnS95 in [#6150](https://github.com/gfx-rs/wgpu/pull/6150) and [#6176](https://github.com/gfx-rs/wgpu/pull/6176).
- Implement `Adapter::new_external()` for WGL (just like EGL) to import an external OpenGL ES context. By @MarijnS95 in [#6152](https://github.com/gfx-rs/wgpu/pull/6152).

#### DX12

- Replace `winapi` code to use the `windows` crate. By @MarijnS95 in [#5956](https://github.com/gfx-rs/wgpu/pull/5956) and [#6173](https://github.com/gfx-rs/wgpu/pull/6173).
- Get `num_workgroups` builtin working for indirect dispatches. By @teoxoy in [#5730](https://github.com/gfx-rs/wgpu/pull/5730).

#### HAL

- Update `parking_lot` to `0.12`. By @mahkoh in [#6287](https://github.com/gfx-rs/wgpu/pull/6287).

## v22.1.0 (2024-07-17)

This release includes `wgpu`, `wgpu-core` and `naga`. All other crates remain at 22.0.0.

### Added

#### naga

- Added back implementations of PartialEq for more IR types. By @teoxoy in [#6045](https://github.com/gfx-rs/wgpu/pull/6045)

### Bug Fixes

#### General

- Fix profiling with `tracy`. By @waywardmonkeys in [#5988](https://github.com/gfx-rs/wgpu/pull/5988)
- Fix function for checking bind compatibility to error instead of panic. By @sagudev [#6012](https://github.com/gfx-rs/wgpu/pull/6012)
- Fix crash when dropping the surface after the device. By @wumpf in [#6052](https://github.com/gfx-rs/wgpu/pull/6052)
- Fix length of copy in `queue_write_texture`. By @teoxoy in [#6009](https://github.com/gfx-rs/wgpu/pull/6009)
- Fix error message that is thrown in create_render_pass to no longer say `compute_pass`. By @matthew-wong1 [#6041](https://github.com/gfx-rs/wgpu/pull/6041)
- As a workaround for [issue #4905](https://github.com/gfx-rs/wgpu/issues/4905), `wgpu-core` is undocumented unless `--cfg wgpu_core_doc` feature is enabled. By @kpreid in [#5987](https://github.com/gfx-rs/wgpu/pull/5987)

## 22.0.0 (2024-07-17)

### Overview

### Our first major version release!

For the first time ever, wgpu is being released with a major version (i.e., 22.\* instead of 0.22.\*)! Maintainership has decided to fully adhere to [Semantic Versioning](https://semver.org/)'s recommendations for versioning production software. According to [SemVer 2.0.0's Q&A about when to use 1.0.0 versions (and beyond)](https://semver.org/spec/v2.0.0.html#how-do-i-know-when-to-release-100):

> ### How do I know when to release 1.0.0?
>
> If your software is being used in production, it should probably already be 1.0.0. If you have a stable API on which users have come to depend, you should be 1.0.0. If you’re worrying a lot about backward compatibility, you should probably already be 1.0.0.

It is a well-known fact that wgpu has been used for applications and platforms already in production for years, at this point. We are often concerned with tracking breaking changes, and affecting these consumers' ability to ship. By releasing our first major version, we publicly acknowledge that this is the case. We encourage other projects in the Rust ecosystem to follow suit.

Note that while we start to use the major version number, wgpu is _not_ "going stable", as many Rust projects do. We anticipate many breaking changes before we fully comply with the WebGPU spec., which we expect to take a small number of years.

### Overview

A major ([pun intended](#our-first-major-version-release)) theme of this release is incremental improvement. Among the typically large set of bug fixes, new features, and other adjustments to wgpu by the many contributors listed below, @wumpf and @teoxoy have merged a series of many simplifications to wgpu's internals and, in one case, to the render and compute pass recording APIs. Many of these change wgpu to use atomically reference-counted resource tracking (i.e., `Arc<…>`), rather than using IDs to manage the lifetimes of platform-specific graphics resources in a registry of separate reference counts. This has led us to diagnose and fix many long-standing bugs, and net some neat performance improvements on the order of 40% or more of some workloads.

While the above is exciting, we acknowledge already finding and fixing some (easy-to-fix) regressions from the above work. If you migrate to wgpu 22 and encounter such bugs, please engage us in the issue tracker right away!

### Major Changes

#### Lifetime bounds on `wgpu::RenderPass` & `wgpu::ComputePass`

`wgpu::RenderPass` & `wgpu::ComputePass` recording methods (e.g. `wgpu::RenderPass:set_render_pipeline`) no longer impose a lifetime constraint to objects passed to a pass (like pipelines/buffers/bindgroups/query-sets etc.).

This means the following pattern works now as expected:

```rust
let mut pipelines: Vec<wgpu::RenderPipeline> = ...;
// ...
let mut cpass = encoder.begin_compute_pass(&wgpu::ComputePassDescriptor::default());
cpass.set_pipeline(&pipelines[123]);
// Change pipeline container - this requires mutable access to `pipelines` while one of the pipelines is in use.
pipelines.push(/* ... */);
// Continue pass recording.
cpass.set_bindgroup(...);
```

Previously, a set pipeline (or other resource) had to outlive pass recording which often affected wider systems,
meaning that users needed to prove to the borrow checker that `Vec<wgpu::RenderPipeline>` (or similar constructs)
aren't accessed mutably for the duration of pass recording.

Furthermore, you can now opt out of `wgpu::RenderPass`/`wgpu::ComputePass`'s lifetime dependency on its parent `wgpu::CommandEncoder` using `wgpu::RenderPass::forget_lifetime`/`wgpu::ComputePass::forget_lifetime`:

```rust
fn independent_cpass<'enc>(encoder: &'enc mut wgpu::CommandEncoder) -> wgpu::ComputePass<'static> {
    let cpass: wgpu::ComputePass<'enc> = encoder.begin_compute_pass(&wgpu::ComputePassDescriptor::default());
    cpass.forget_lifetime()
}
```

⚠️ As long as a `wgpu::RenderPass`/`wgpu::ComputePass` is pending for a given `wgpu::CommandEncoder`, creation of a compute or render pass is an error and invalidates the `wgpu::CommandEncoder`.
`forget_lifetime` can be very useful for library authors, but opens up an easy way for incorrect use, so use with care.
This method doesn't add any additional overhead and has no side effects on pass recording.

By @wumpf in [#5569](https://github.com/gfx-rs/wgpu/pull/5569), [#5575](https://github.com/gfx-rs/wgpu/pull/5575), [#5620](https://github.com/gfx-rs/wgpu/pull/5620), [#5768](https://github.com/gfx-rs/wgpu/pull/5768) (together with @kpreid), [#5671](https://github.com/gfx-rs/wgpu/pull/5671), [#5794](https://github.com/gfx-rs/wgpu/pull/5794), [#5884](https://github.com/gfx-rs/wgpu/pull/5884).

#### Querying shader compilation errors

Wgpu now supports querying [shader compilation info](https://www.w3.org/TR/webgpu/#dom-gpushadermodule-getcompilationinfo).

This allows you to get more structured information about compilation errors, warnings and info:

```rust
...
let lighting_shader = ctx.device.create_shader_module(include_wgsl!("lighting.wgsl"));
let compilation_info = lighting_shader.get_compilation_info().await;
for message in compilation_info
    .messages
    .iter()
    .filter(|m| m.message_type == wgpu::CompilationMessageType::Error)
{
    let line = message.location.map(|l| l.line_number).unwrap_or(1);
    println!("Compile error at line {line}");
}
```

By @stefnotch in [#5410](https://github.com/gfx-rs/wgpu/pull/5410)

#### 64 bit integer atomic support in shaders.

Add support for 64 bit integer atomic operations in shaders.

Add the following flags to `wgpu_types::Features`:

- `SHADER_INT64_ATOMIC_ALL_OPS` enables all atomic operations on `atomic<i64>` and
  `atomic<u64>` values.

- `SHADER_INT64_ATOMIC_MIN_MAX` is a subset of the above, enabling only
  `AtomicFunction::Min` and `AtomicFunction::Max` operations on `atomic<i64>` and
  `atomic<u64>` values in the `Storage` address space. These are the only 64-bit
  atomic operations available on Metal as of 3.1.

Add corresponding flags to `naga::valid::Capabilities`. These are supported by the
WGSL front end, and all naga backends.

Platform support:

- On Direct3d 12, in `D3D12_FEATURE_DATA_D3D12_OPTIONS9`, if
  `AtomicInt64OnTypedResourceSupported` and `AtomicInt64OnGroupSharedSupported` are
  both available, then both wgpu features described above are available.

- On Metal, `SHADER_INT64_ATOMIC_MIN_MAX` is available on Apple9 hardware, and on
  hardware that advertises both Apple8 and Mac2 support. This also requires Metal
  Shading Language 2.4 or later. Metal does not yet support the more general
  `SHADER_INT64_ATOMIC_ALL_OPS`.

- On Vulkan, if the `VK_KHR_shader_atomic_int64` extension is available with both the
  `shader_buffer_int64_atomics` and `shader_shared_int64_atomics` features, then both
  wgpu features described above are available.

By @atlv24 in [#5383](https://github.com/gfx-rs/wgpu/pull/5383)

#### A compatible surface is now required for `request_adapter()` on WebGL2 + `enumerate_adapters()` is now native only.

When targeting WebGL2, it has always been the case that a surface had to be created before calling `request_adapter()`.
We now make this requirement explicit.

Validation was also added to prevent configuring the surface with a device that doesn't share the same underlying
WebGL2 context since this has never worked.

Calling `enumerate_adapters()` when targeting WebGPU used to return an empty `Vec` and since we now require users
to pass a compatible surface when targeting WebGL2, having `enumerate_adapters()` doesn't make sense.

By @teoxoy in [#5901](https://github.com/gfx-rs/wgpu/pull/5901)

### New features

#### General

- Added `as_hal` for `Buffer` to access wgpu created buffers form wgpu-hal. By @JasondeWolff in [#5724](https://github.com/gfx-rs/wgpu/pull/5724)
- `include_wgsl!` is now callable in const contexts by @9SMTM6 in [#5872](https://github.com/gfx-rs/wgpu/pull/5872)
- Added memory allocation hints to `DeviceDescriptor` by @nical in [#5875](https://github.com/gfx-rs/wgpu/pull/5875)
  - `MemoryHints::Performance`, the default, favors performance over memory usage and will likely cause large amounts of VRAM to be allocated up-front. This hint is typically good for games.
  - `MemoryHints::MemoryUsage` favors memory usage over performance. This hint is typically useful for smaller applications or UI libraries.
  - `MemoryHints::Manual` allows the user to specify parameters for the underlying GPU memory allocator. These parameters are subject to change.
  - These hints may be ignored by some backends. Currently only the Vulkan and D3D12 backends take them into account.
- Add `HTMLImageElement` and `ImageData` as external source for copying images. By @Valaphee in [#5668](https://github.com/gfx-rs/wgpu/pull/5668)

#### naga

- Added -D, --defines option to naga CLI to define preprocessor macros by @theomonnom in [#5859](https://github.com/gfx-rs/wgpu/pull/5859)
- Added type upgrades to SPIR-V atomic support. Added related infrastructure. Tracking issue is [here](https://github.com/gfx-rs/wgpu/issues/4489). By @schell in [#5775](https://github.com/gfx-rs/wgpu/pull/5775).
- Implement `WGSL`'s `unpack4xI8`,`unpack4xU8`,`pack4xI8` and `pack4xU8`. By @VlaDexa in [#5424](https://github.com/gfx-rs/wgpu/pull/5424)
- Began work adding support for atomics to the SPIR-V frontend. Tracking issue is [here](https://github.com/gfx-rs/wgpu/issues/4489). By @schell in [#5702](https://github.com/gfx-rs/wgpu/pull/5702).
- In hlsl-out, allow passing information about the fragment entry point to omit vertex outputs that are not in the fragment inputs. By @Imberflur in [#5531](https://github.com/gfx-rs/wgpu/pull/5531)
- In spv-out, allow passing `acceleration_structure` as a function argument. By @kvark in [#5961](https://github.com/gfx-rs/wgpu/pull/5961)

  ```diff
  let writer: naga::back::hlsl::Writer = /* ... */;
  -writer.write(&module, &module_info);
  +writer.write(&module, &module_info, None);
  ```

- HLSL & MSL output can now be added conditionally on the target via the `msl-out-if-target-apple` and `hlsl-out-if-target-windows` features. This is used in wgpu-hal to no longer compile with MSL output when `metal` is enabled & MacOS isn't targeted and no longer compile with HLSL output when `dx12` is enabled & Windows isn't targeted. By @wumpf in [#5919](https://github.com/gfx-rs/wgpu/pull/5919)

#### Vulkan

- Added a `PipelineCache` resource to allow using Vulkan pipeline caches. By @DJMcNab in [#5319](https://github.com/gfx-rs/wgpu/pull/5319)

#### WebGPU

- Added support for pipeline-overridable constants to the WebGPU backend by @DouglasDwyer in [#5688](https://github.com/gfx-rs/wgpu/pull/5688)

### Changes

#### General

- Unconsumed vertex outputs are now always allowed. Removed `StageError::InputNotConsumed`, `Features::SHADER_UNUSED_VERTEX_OUTPUT`, and associated validation. By @Imberflur in [#5531](https://github.com/gfx-rs/wgpu/pull/5531)
- Avoid introducing spurious features for optional dependencies. By @bjorn3 in [#5691](https://github.com/gfx-rs/wgpu/pull/5691)
- `wgpu::Error` is now `Sync`, making it possible to be wrapped in `anyhow::Error` or `eyre::Report`. By @nolanderc in [#5820](https://github.com/gfx-rs/wgpu/pull/5820)
- Added benchmark suite. By @cwfitzgerald in [#5694](https://github.com/gfx-rs/wgpu/pull/5694), compute passes by @wumpf in [#5767](https://github.com/gfx-rs/wgpu/pull/5767)
- Improve performance of `.submit()` by 39-64% (`.submit()` + `.poll()` by 22-32%). By @teoxoy in [#5910](https://github.com/gfx-rs/wgpu/pull/5910)
- The `trace` wgpu feature has been temporarily removed. By @teoxoy in [#5975](https://github.com/gfx-rs/wgpu/pull/5975)

#### Metal

- Removed the `link` Cargo feature.

  This was used to allow weakly linking frameworks. This can be achieved with putting something like the following in your `.cargo/config.toml` instead:

  ```toml
  [target.'cfg(target_vendor = "apple")']
  rustflags = ["-C", "link-args=-weak_framework Metal -weak_framework QuartzCore -weak_framework CoreGraphics"]
  ```

  By @madsmtm in [#5752](https://github.com/gfx-rs/wgpu/pull/5752)

### Bug Fixes

#### General

- Ensure render pipelines have at least 1 target. By @ErichDonGubler in [#5715](https://github.com/gfx-rs/wgpu/pull/5715)
- `wgpu::ComputePass` now internally takes ownership of `QuerySet` for both `wgpu::ComputePassTimestampWrites` as well as timestamp writes and statistics query, fixing crashes when destroying `QuerySet` before ending the pass. By @wumpf in [#5671](https://github.com/gfx-rs/wgpu/pull/5671)
- Validate resources passed during compute pass recording for mismatching device. By @wumpf in [#5779](https://github.com/gfx-rs/wgpu/pull/5779)
- Fix staging buffers being destroyed too early. By @teoxoy in [#5910](https://github.com/gfx-rs/wgpu/pull/5910)
- Fix attachment byte cost validation panicking with native only formats. By @teoxoy in [#5934](https://github.com/gfx-rs/wgpu/pull/5934)
- [wgpu] Fix leaks from auto layout pipelines. By @teoxoy in [#5971](https://github.com/gfx-rs/wgpu/pull/5971)
- [wgpu-core] Fix length of copy in `queue_write_texture` (causing UB). By @teoxoy in [#5973](https://github.com/gfx-rs/wgpu/pull/5973)
- Add missing same device checks. By @teoxoy in [#5980](https://github.com/gfx-rs/wgpu/pull/5980)

#### GLES / OpenGL

- Fix `ClearColorF`, `ClearColorU` and `ClearColorI` commands being issued before `SetDrawColorBuffers` [#5666](https://github.com/gfx-rs/wgpu/pull/5666)
- Replace `glClear` with `glClearBufferF` because `glDrawBuffers` requires that the ith buffer must be `COLOR_ATTACHMENTi` or `NONE` [#5666](https://github.com/gfx-rs/wgpu/pull/5666)
- Return the unmodified version in driver_info. By @Valaphee in [#5753](https://github.com/gfx-rs/wgpu/pull/5753)

#### naga

- In spv-out don't decorate a `BindingArray`'s type with `Block` if the type is a struct with a runtime array by @Vecvec in [#5776](https://github.com/gfx-rs/wgpu/pull/5776)
- Add `packed` as a keyword for GLSL by @kjarosh in [#5855](https://github.com/gfx-rs/wgpu/pull/5855)

## v0.20.2 (2024-06-12)

This release force-bumps transitive dependencies of `wgpu` on `wgpu-core` and `wgpu-hal` to 0.21.1, to resolve some undefined behavior observable in the DX12 backend after upgrading to Rust 1.79 or later.

### Bug Fixes

#### General

- Fix a `CommandBuffer` leak. By @cwfitzgerald and @nical in [#5141](https://github.com/gfx-rs/wgpu/pull/5141)

#### DX12

- Do not feed `&""` to `D3DCompile`, by @workingjubilee in [#5812](https://github.com/gfx-rs/wgpu/issues/5812).

## v0.20.1 (2024-06-12)

This release included v0.21.0 of `wgpu-core` and `wgpu-hal`, due to breaking changes needed to solve vulkan validation issues.

### Bug Fixes

This release fixes the validation errors whenever a surface is used with the vulkan backend. By @cwfitzgerald in [#5681](https://github.com/gfx-rs/wgpu/pull/5681).

#### General

- Clean up weak references to texture views and bind groups to prevent memory leaks. By @xiaopengli89 in [#5595](https://github.com/gfx-rs/wgpu/pull/5595).
- Fix segfault on exit is queue & device are dropped before surface. By @sagudev in [#5640](https://github.com/gfx-rs/wgpu/pull/5640).

#### Metal

- Fix unrecognized selector crash on iOS 12. By @vladasz in [#5744](https://github.com/gfx-rs/wgpu/pull/5744).

#### Vulkan

- Fix enablement of subgroup ops extension on Vulkan devices that don't support Vulkan 1.3. By @cwfitzgerald in [#5624](https://github.com/gfx-rs/wgpu/pull/5624).

#### GLES / OpenGL

- Fix regression on OpenGL (EGL) where non-sRGB still used sRGB [#5642](https://github.com/gfx-rs/wgpu/pull/5642)

#### naga

- Work around shader consumers that have bugs handling `switch` statements with a single body for all cases. These are now written as `do {} while(false);` loops in hlsl-out and glsl-out. By @Imberflur in [#5654](https://github.com/gfx-rs/wgpu/pull/5654)
- In hlsl-out, defer `continue` statements in switches by setting a flag and breaking from the switch. This allows such constructs to work with FXC which does not support `continue` within a switch. By @Imberflur in [#5654](https://github.com/gfx-rs/wgpu/pull/5654)

## v0.20.0 (2024-04-28)

### Major Changes

#### Pipeline overridable constants

Wgpu supports now [pipeline-overridable constants](https://www.w3.org/TR/webgpu/#dom-gpuprogrammablestage-constants)

This allows you to define constants in wgsl like this:

```rust
override some_factor: f32 = 42.1337; // Specifies a default of 42.1337 if it's not set.
```

And then set them at runtime like so on your pipeline consuming this shader:

```rust
// ...
fragment: Some(wgpu::FragmentState {
    compilation_options: wgpu::PipelineCompilationOptions {
        constants: &[("some_factor".to_owned(), 0.1234)].into(), // Sets `some_factor` to 0.1234.
        ..Default::default()
    },
    // ...
}),
// ...
```

By @teoxoy & @jimblandy in [#5500](https://github.com/gfx-rs/wgpu/pull/5500)

#### Changed feature requirements for timestamps

Due to a specification change `write_timestamp` is no longer supported on WebGPU.
`wgpu::CommandEncoder::write_timestamp` requires now the new `wgpu::Features::TIMESTAMP_QUERY_INSIDE_ENCODERS` feature which is available on all native backends but not on WebGPU.

By @wumpf in [#5188](https://github.com/gfx-rs/wgpu/pull/5188)

#### Wgsl const evaluation for many more built-ins

Many numeric built-ins have had a constant evaluation implementation added for them, which allows them to be used in a `const` context:

`abs`, `acos`, `acosh`, `asin`, `asinh`, `atan`, `atanh`, `cos`, `cosh`, `round`, `saturate`, `sin`, `sinh`, `sqrt`, `step`, `tan`, `tanh`, `ceil`, `countLeadingZeros`, `countOneBits`, `countTrailingZeros`, `degrees`, `exp`, `exp2`, `floor`, `fract`, `fma`, `inverseSqrt`, `log`, `log2`, `max`, `min`, `radians`, `reverseBits`, `sign`, `trunc`

By @ErichDonGubler in [#4879](https://github.com/gfx-rs/wgpu/pull/4879), [#5098](https://github.com/gfx-rs/wgpu/pull/5098)

#### New **native-only** wgsl features

##### Subgroup operations

The following subgroup operations are available in wgsl now:

`subgroupBallot`, `subgroupAll`, `subgroupAny`, `subgroupAdd`, `subgroupMul`, `subgroupMin`, `subgroupMax`, `subgroupAnd`, `subgroupOr`, `subgroupXor`, `subgroupExclusiveAdd`, `subgroupExclusiveMul`, `subgroupInclusiveAdd`, `subgroupInclusiveMul`, `subgroupBroadcastFirst`, `subgroupBroadcast`, `subgroupShuffle`, `subgroupShuffleDown`, `subgroupShuffleUp`, `subgroupShuffleXor`

Availability is governed by the following feature flags:

- `wgpu::Features::SUBGROUP` for all operations except `subgroupBarrier` in fragment & compute, supported on Vulkan, DX12 and Metal.
- `wgpu::Features::SUBGROUP_VERTEX`, for all operations except `subgroupBarrier` general operations in vertex shaders, supported on Vulkan
- `wgpu::Features::SUBGROUP_BARRIER`, for support of the `subgroupBarrier` operation, supported on Vulkan & Metal

Note that there currently [some differences](https://github.com/gfx-rs/wgpu/issues/5555) between wgpu's native-only implementation and the [open WebGPU proposal](https://github.com/gpuweb/gpuweb/blob/main/proposals/subgroups.md).

By @exrook and @lichtso in [#5301](https://github.com/gfx-rs/wgpu/pull/5301)

##### Signed and unsigned 64 bit integer support in shaders.

`wgpu::Features::SHADER_INT64` enables 64 bit integer signed and unsigned integer variables in wgsl (`i64` and `u64` respectively).
Supported on Vulkan, DX12 (requires DXC) and Metal (with MSL 2.3+ support).

By @atlv24 and @cwfitzgerald in [#5154](https://github.com/gfx-rs/wgpu/pull/5154)

### New features

#### General

- Implemented the `Unorm10_10_10_2` VertexFormat by @McMackety in [#5477](https://github.com/gfx-rs/wgpu/pull/5477)
- `wgpu-types`'s `trace` and `replay` features have been replaced by the `serde` feature. By @KirmesBude in [#5149](https://github.com/gfx-rs/wgpu/pull/5149)
- `wgpu-core`'s `serial-pass` feature has been removed. Use `serde` instead. By @KirmesBude in [#5149](https://github.com/gfx-rs/wgpu/pull/5149)
- Added `InstanceFlags::GPU_BASED_VALIDATION`, which enables GPU-based validation for shaders. This is currently only supported on the DX12 and Vulkan backends; other platforms ignore this flag, for now. By @ErichDonGubler in [#5146](https://github.com/gfx-rs/wgpu/pull/5146), [#5046](https://github.com/gfx-rs/wgpu/pull/5046).
  - When set, this flag implies `InstanceFlags::VALIDATION`.
  - This has been added to the set of flags set by `InstanceFlags::advanced_debugging`. Since the overhead is potentially very large, the flag is not enabled by default in debug builds when using `InstanceFlags::from_build_config`.
  - As with other instance flags, this flag can be changed in calls to `InstanceFlags::with_env` with the new `WGPU_GPU_BASED_VALIDATION` environment variable.
- `wgpu::Instance` can now report which `wgpu::Backends` are available based on the build configuration. By @wumpf [#5167](https://github.com/gfx-rs/wgpu/pull/5167)
  ```diff
  -wgpu::Instance::any_backend_feature_enabled()
  +!wgpu::Instance::enabled_backend_features().is_empty()
  ```
- Breaking change: [`wgpu_core::pipeline::ProgrammableStageDescriptor`](https://docs.rs/wgpu-core/latest/wgpu_core/pipeline/struct.ProgrammableStageDescriptor.html#structfield.entry_point) is now optional. By @ErichDonGubler in [#5305](https://github.com/gfx-rs/wgpu/pull/5305).
- `Features::downlevel{_webgl2,}_features` was made const by @MultisampledNight in [#5343](https://github.com/gfx-rs/wgpu/pull/5343)
- Breaking change: [`wgpu_core::pipeline::ShaderError`](https://docs.rs/wgpu-core/latest/wgpu_core/pipeline/struct.ShaderError.html) has been moved to `naga`. By @stefnotch in [#5410](https://github.com/gfx-rs/wgpu/pull/5410)
- More as_hal methods and improvements by @JMS55 in [#5452](https://github.com/gfx-rs/wgpu/pull/5452)
  - Added `wgpu::CommandEncoder::as_hal_mut`
  - Added `wgpu::TextureView::as_hal`
  - `wgpu::Texture::as_hal` now returns a user-defined type to match the other as_hal functions

#### naga

- Allow user to select which MSL version to use via `--metal-version` with naga CLI. By @pcleavelin in [#5392](https://github.com/gfx-rs/wgpu/pull/5392)
- Support `arrayLength` for runtime-sized arrays inside binding arrays (for WGSL input and SPIR-V output). By @kvark in [#5428](https://github.com/gfx-rs/wgpu/pull/5428)
- Added `--shader-stage` and `--input-kind` options to naga-cli for specifying vertex/fragment/compute shaders, and frontend. by @ratmice in [#5411](https://github.com/gfx-rs/wgpu/pull/5411)
- Added a `create_validator` function to wgpu_core `Device` to create naga `Validator`s. By @atlv24 [#5606](https://github.com/gfx-rs/wgpu/pull/5606)

#### WebGPU

- Implement the `device_set_device_lost_callback` method for `ContextWebGpu`. By @suti in [#5438](https://github.com/gfx-rs/wgpu/pull/5438)
- Add support for storage texture access modes `ReadOnly` and `ReadWrite`. By @JolifantoBambla in [#5434](https://github.com/gfx-rs/wgpu/pull/5434)

#### GLES / OpenGL

- Log an error when GLES texture format heuristics fail. By @PolyMeilex in [#5266](https://github.com/gfx-rs/wgpu/issues/5266)
- Cache the sample count to keep `get_texture_format_features` cheap. By @Dinnerbone in [#5346](https://github.com/gfx-rs/wgpu/pull/5346)
- Mark `DEPTH32FLOAT_STENCIL8` as supported in GLES. By @Dinnerbone in [#5370](https://github.com/gfx-rs/wgpu/pull/5370)
- Desktop GL now also supports `TEXTURE_COMPRESSION_ETC2`. By @Valaphee in [#5568](https://github.com/gfx-rs/wgpu/pull/5568)
- Don't create a program for shader-clearing if that workaround isn't required. By @Dinnerbone in [#5348](https://github.com/gfx-rs/wgpu/pull/5348).
- OpenGL will now be preferred over OpenGL ES on EGL, making it consistent with WGL. By @valaphee in [#5482](https://github.com/gfx-rs/wgpu/pull/5482)
- Fill out `driver` and `driver_info`, with the OpenGL flavor and version, similar to Vulkan. By @valaphee in [#5482](https://github.com/gfx-rs/wgpu/pull/5482)

#### Metal

- Metal 3.0 and 3.1 detection. By @atlv24 in [#5497](https://github.com/gfx-rs/wgpu/pull/5497)

#### DX12

- Shader Model 6.1-6.7 detection. By @atlv24 in [#5498](https://github.com/gfx-rs/wgpu/pull/5498)

### Other performance improvements

- Simplify and speed up the allocation of internal IDs. By @nical in [#5229](https://github.com/gfx-rs/wgpu/pull/5229)
- Use memory pooling for UsageScopes to avoid frequent large allocations. by @robtfm in [#5414](https://github.com/gfx-rs/wgpu/pull/5414)
- Eager release of GPU resources comes from device.trackers. By @bradwerth in [#5075](https://github.com/gfx-rs/wgpu/pull/5075)
- Support disabling zero-initialization of workgroup local memory in compute shaders. By @DJMcNab in [#5508](https://github.com/gfx-rs/wgpu/pull/5508)

### Documentation

- Improved `wgpu_hal` documentation. By @jimblandy in [#5516](https://github.com/gfx-rs/wgpu/pull/5516), [#5524](https://github.com/gfx-rs/wgpu/pull/5524), [#5562](https://github.com/gfx-rs/wgpu/pull/5562), [#5563](https://github.com/gfx-rs/wgpu/pull/5563), [#5566](https://github.com/gfx-rs/wgpu/pull/5566), [#5617](https://github.com/gfx-rs/wgpu/pull/5617), [#5618](https://github.com/gfx-rs/wgpu/pull/5618)
- Add mention of primitive restart in the description of `PrimitiveState::strip_index_format`. By @cpsdqs in [#5350](https://github.com/gfx-rs/wgpu/pull/5350)
- Document and tweak precise behaviour of `SourceLocation`. By @stefnotch in [#5386](https://github.com/gfx-rs/wgpu/pull/5386) and [#5410](https://github.com/gfx-rs/wgpu/pull/5410)
- Give short example of WGSL `push_constant` syntax. By @waywardmonkeys in [#5393](https://github.com/gfx-rs/wgpu/pull/5393)
- Fix incorrect documentation of `Limits::max_compute_workgroup_storage_size` default value. By @atlv24 in [#5601](https://github.com/gfx-rs/wgpu/pull/5601)

### Bug Fixes

#### General

- Fix `serde` feature not compiling for `wgpu-types`. By @KirmesBude in [#5149](https://github.com/gfx-rs/wgpu/pull/5149)
- Fix the validation of vertex and index ranges. By @nical in [#5144](https://github.com/gfx-rs/wgpu/pull/5144) and [#5156](https://github.com/gfx-rs/wgpu/pull/5156)
- Fix panic when creating a surface while no backend is available. By @wumpf [#5166](https://github.com/gfx-rs/wgpu/pull/5166)
- Correctly compute minimum buffer size for array-typed `storage` and `uniform` vars. By @jimblandy [#5222](https://github.com/gfx-rs/wgpu/pull/5222)
- Fix timeout when presenting a surface where no work has been done. By @waywardmonkeys in [#5200](https://github.com/gfx-rs/wgpu/pull/5200)
- Fix registry leaks with de-duplicated resources. By @nical in [#5244](https://github.com/gfx-rs/wgpu/pull/5244)
- Fix linking when targeting android. By @ashdnazg in [#5326](https://github.com/gfx-rs/wgpu/pull/5326).
- Failing to set the device lost closure will call the closure before returning. By @bradwerth in [#5358](https://github.com/gfx-rs/wgpu/pull/5358).
- Fix deadlocks caused by recursive read-write lock acquisitions [#5426](https://github.com/gfx-rs/wgpu/pull/5426).
- Remove exposed C symbols (`extern "C"` + [no_mangle]) from RenderPass & ComputePass recording. By @wumpf in [#5409](https://github.com/gfx-rs/wgpu/pull/5409).
- Fix surfaces being only compatible with first backend enabled on an instance, causing failures when manually specifying an adapter. By @Wumpf in [#5535](https://github.com/gfx-rs/wgpu/pull/5535).

#### naga

- In spv-in, remove unnecessary "gl_PerVertex" name check so unused builtins will always be skipped. Prevents validation errors caused by capability requirements of these builtins [#4915](https://github.com/gfx-rs/wgpu/issues/4915). By @Imberflur in [#5227](https://github.com/gfx-rs/wgpu/pull/5227).
- In spv-out, check for acceleration and ray-query types when enabling ray-query extension to prevent validation error. By @Vecvec in [#5463](https://github.com/gfx-rs/wgpu/pull/5463)
- Add a limit for curly brace nesting in WGSL parsing, plus a note about stack size requirements. By @ErichDonGubler in [#5447](https://github.com/gfx-rs/wgpu/pull/5447).
- In hlsl-out, fix accesses on zero value expressions by generating helper functions for `Expression::ZeroValue`. By @Imberflur in [#5587](https://github.com/gfx-rs/wgpu/pull/5587).
- Fix behavior of `extractBits` and `insertBits` when `offset + count` overflows the bit width. By @cwfitzgerald in [#5305](https://github.com/gfx-rs/wgpu/pull/5305)
- Fix behavior of integer `clamp` when `min` argument > `max` argument. By @cwfitzgerald in [#5300](https://github.com/gfx-rs/wgpu/pull/5300).
- Fix `TypeInner::scalar_width` to be consistent with the rest of the codebase and return values in bytes not bits. By @atlv24 in [#5532](https://github.com/gfx-rs/wgpu/pull/5532).

#### GLES / OpenGL

- GLSL 410 does not support layout(binding = ...), enable only for GLSL 420. By @bes in [#5357](https://github.com/gfx-rs/wgpu/pull/5357)
- Fixes for being able to use an OpenGL 4.1 core context provided by macOS with wgpu. By @bes in [#5331](https://github.com/gfx-rs/wgpu/pull/5331).
- Fix crash when holding multiple devices on wayland/surfaceless. By @ashdnazg in [#5351](https://github.com/gfx-rs/wgpu/pull/5351).
- Fix `first_instance` getting ignored in draw indexed when `ARB_shader_draw_parameters` feature is present and `base_vertex` is 0. By @valaphee in [#5482](https://github.com/gfx-rs/wgpu/pull/5482)

#### Vulkan

- Set object labels when the DEBUG flag is set, even if the VALIDATION flag is disabled. By @DJMcNab in [#5345](https://github.com/gfx-rs/wgpu/pull/5345).
- Add safety check to `wgpu_hal::vulkan::CommandEncoder` to make sure `discard_encoding` is not called in the closed state. By @villuna in [#5557](https://github.com/gfx-rs/wgpu/pull/5557)
- Fix SPIR-V type capability requests to not depend on `LocalType` caching. By @atlv24 in [#5590](https://github.com/gfx-rs/wgpu/pull/5590)
- Upgrade `ash` to `0.38`. By @MarijnS95 in [#5504](https://github.com/gfx-rs/wgpu/pull/5504).

#### Tests

- Fix intermittent crashes on Linux in the `multithreaded_compute` test. By @jimblandy in [#5129](https://github.com/gfx-rs/wgpu/pull/5129).
- Refactor tests to read feature flags by name instead of a hardcoded hexadecimal u64. By @atlv24 in [#5155](https://github.com/gfx-rs/wgpu/pull/5155).
- Add test that verifies that we can drop the queue before using the device to create a command encoder. By @Davidster in [#5211](https://github.com/gfx-rs/wgpu/pull/5211)

## 0.19.5 (2024-07-16)

This release only releases `wgpu-hal` 0.19.5, which contains an important fix
for DX12.

### Bug Fixes

#### DX12

- Do not feed `&""` to `D3DCompile`, by @workingjubilee in [#5812](https://github.com/gfx-rs/wgpu/issues/5812), backported by @Elabajaba in [#5833](https://github.com/gfx-rs/wgpu/pull/5833).

## v0.19.4 (2024-04-17)

### Bug Fixes

#### General

- Don't depend on bind group and bind group layout entry order in backends. This caused incorrect severely incorrect command execution and, in some cases, crashes. By @ErichDonGubler in [#5421](https://github.com/gfx-rs/wgpu/pull/5421).
- Properly clean up all write_buffer/texture temporary resources. By @robtfm in [#5413](https://github.com/gfx-rs/wgpu/pull/5413).
- Fix deadlock in certain situations when mapping buffers using `wgpu-profiler`. By @cwfitzgerald in [#5517](https://github.com/gfx-rs/wgpu/pull/5517)

#### WebGPU

- Correctly pass through timestamp queries to WebGPU. By @cwfitzgerald in [#5527](https://github.com/gfx-rs/wgpu/pull/5527).

## v0.19.3 (2024-03-01)

This release includes `wgpu`, `wgpu-core`, and `wgpu-hal`. All other crates are unchanged.

### Major Changes

#### Vendored WebGPU Bindings from `web_sys`

**`--cfg=web_sys_unstable_apis` is no longer needed in your `RUSTFLAGS` to compile for WebGPU!!!**

While WebGPU's javascript api is stable in the browsers, the `web_sys` bindings for WebGPU are still improving. As such they are hidden behind the special cfg `--cfg=web_sys_unstable_apis` and are not available by default. Everyone who wanted to use our WebGPU backend needed to enable this cfg in their `RUSTFLAGS`. This was very inconvenient and made it hard to use WebGPU, especially when WebGPU is enabled by default. Additionally, the unstable APIs don't adhere to semver, so there were repeated breakages.

To combat this problem we have decided to vendor the `web_sys` bindings for WebGPU within the crate. Notably we are not forking the bindings, merely vendoring, so any improvements we make to the bindings will be contributed directly to upstream `web_sys`.

By @cwfitzgerald in [#5325](https://github.com/gfx-rs/wgpu/pull/5325).

### Bug Fixes

#### General

- Fix an issue where command encoders weren't properly freed if an error occurred during command encoding. By @ErichDonGubler in [#5251](https://github.com/gfx-rs/wgpu/pull/5251).
- Fix incorrect validation causing all indexed draws on render bundles to fail. By @wumpf in [#5430](https://github.com/gfx-rs/wgpu/pull/5340).

#### Android

- Fix linking error when targeting android without `winit`. By @ashdnazg in [#5326](https://github.com/gfx-rs/wgpu/pull/5326).

## v0.19.2 (2024-02-29)

This release includes `wgpu`, `wgpu-core`, `wgpu-hal`, `wgpu-types`, and `naga`. All other crates are unchanged.

### Added/New Features

#### General

- `wgpu::Id` now implements `PartialOrd`/`Ord` allowing it to be put in `BTreeMap`s. By @cwfitzgerald and @9291Sam in [#5176](https://github.com/gfx-rs/wgpu/pull/5176)

#### OpenGL

- Log an error when OpenGL texture format heuristics fail. By @PolyMeilex in [#5266](https://github.com/gfx-rs/wgpu/issues/5266)

#### `wgsl-out`

- Learned to generate acceleration structure types. By @JMS55 in [#5261](https://github.com/gfx-rs/wgpu/pull/5261)

### Documentation

- Fix link in `wgpu::Instance::create_surface` documentation. By @HexoKnight in [#5280](https://github.com/gfx-rs/wgpu/pull/5280).
- Fix typo in `wgpu::CommandEncoder::clear_buffer` documentation. By @PWhiddy in [#5281](https://github.com/gfx-rs/wgpu/pull/5281).
- `Surface` configuration incorrectly claimed that `wgpu::Instance::create_surface` was unsafe. By @hackaugusto in [#5265](https://github.com/gfx-rs/wgpu/pull/5265).

### Bug Fixes

#### General

- Device lost callbacks are invoked when replaced and when global is dropped. By @bradwerth in [#5168](https://github.com/gfx-rs/wgpu/pull/5168)
- Fix performance regression when allocating a large amount of resources of the same type. By @nical in [#5229](https://github.com/gfx-rs/wgpu/pull/5229)
- Fix docs.rs wasm32 builds. By @cwfitzgerald in [#5310](https://github.com/gfx-rs/wgpu/pull/5310)
- Improve error message when binding count limit hit. By @hackaugusto in [#5298](https://github.com/gfx-rs/wgpu/pull/5298)
- Remove an unnecessary `clone` during GLSL shader ingestion. By @a1phyr in [#5118](https://github.com/gfx-rs/wgpu/pull/5118).
- Fix missing validation for `Device::clear_buffer` where `offset + size > buffer.size` was not checked when `size` was omitted. By @ErichDonGubler in [#5282](https://github.com/gfx-rs/wgpu/pull/5282).

#### DX12

- Fix `panic!` when dropping `Instance` without `InstanceFlags::VALIDATION`. By @hakolao in [#5134](https://github.com/gfx-rs/wgpu/pull/5134)

#### OpenGL

- Fix internal format for the `Etc2Rgba8Unorm` format. By @andristarr in [#5178](https://github.com/gfx-rs/wgpu/pull/5178)
- Try to load `libX11.so.6` in addition to `libX11.so` on linux. [#5307](https://github.com/gfx-rs/wgpu/pull/5307)
- Make use of `GL_EXT_texture_shadow_lod` to support sampling a cube depth texture with an explicit LOD. By @cmrschwarz in #[5171](https://github.com/gfx-rs/wgpu/pull/5171).

#### `glsl-in`

- Fix code generation from nested loops. By @cwfitzgerald and @teoxoy in [#5311](https://github.com/gfx-rs/wgpu/pull/5311)

## v0.19.1 (2024-01-22)

This release includes `wgpu` and `wgpu-hal`. The rest of the crates are unchanged since 0.19.0.

### Bug Fixes

#### DX12

- Properly register all swapchain buffers to prevent error on surface present. By @dtzxporter in [#5091](https://github.com/gfx-rs/wgpu/pull/5091)
- Check for extra null states when creating resources. By @nical in [#5096](https://github.com/gfx-rs/wgpu/pull/5096)
- Fix depth-only and stencil-only views causing crashes. By @teoxoy in [#5100](https://github.com/gfx-rs/wgpu/pull/5100)

#### OpenGL

- In Surface::configure and Surface::present on Windows, fix the current GL context not being unset when releasing the lock that guards access to making the context current. This was causing other threads to panic when trying to make the context current. By @Imberflur in [#5087](https://github.com/gfx-rs/wgpu/pull/5087).

#### WebGPU

- Improve error message when compiling WebGPU backend on wasm without the `web_sys_unstable_apis` set. By @rukai in [#5104](https://github.com/gfx-rs/wgpu/pull/5104)

### Documentation

- Document Wayland specific behavior related to `SurfaceTexture::present`. By @i509VCB in [#5093](https://github.com/gfx-rs/wgpu/pull/5093).

## v0.19.0 (2024-01-17)

This release includes:

- `wgpu`
- `wgpu-core`
- `wgpu-hal`
- `wgpu-types`
- `wgpu-info`
- `naga` (skipped from 0.14 to 0.19)
- `naga-cli` (skipped from 0.14 to 0.19)
- `d3d12` (skipped from 0.7 to 0.19)

### Improved Multithreading through internal use of Reference Counting

Large refactoring of wgpu’s internals aiming at reducing lock contention, and providing better performance when using wgpu on multiple threads.

[Check the blog post!](https://gfx-rs.github.io/2023/11/24/arcanization.html)

By @gents83 in [#3626](https://github.com/gfx-rs/wgpu/pull/3626) and thanks also to @jimblandy, @nical, @Wumpf, @Elabajaba & @cwfitzgerald

### All Public Dependencies are Re-Exported

All of wgpu's public dependencies are now re-exported at the top level so that users don't need to take their own dependencies.
This includes:

- wgpu-core
- wgpu-hal
- naga
- raw_window_handle
- web_sys

### Feature Flag Changes

#### WebGPU & WebGL in the same Binary

Enabling `webgl` no longer removes the `webgpu` backend.

Instead, there's a new (default enabled) `webgpu` feature that allows to explicitly opt-out of `webgpu` if so desired.
If both `webgl` & `webgpu` are enabled, `wgpu::Instance` decides upon creation whether to target wgpu-core/WebGL or WebGPU.
This means that adapter selection is not handled as with regular adapters, but still allows to decide at runtime whether
`webgpu` or the `webgl` backend should be used using a single wasm binary.
By @wumpf in [#5044](https://github.com/gfx-rs/wgpu/pull/5044)

#### `naga-ir` Dedicated Feature

The `naga-ir` feature has been added to allow you to add naga module shaders without guessing about what other features needed to be enabled to get access to it.
By @cwfitzgerald in [#5063](https://github.com/gfx-rs/wgpu/pull/5063).

#### `expose-ids` Feature available unconditionally

This feature allowed you to call `global_id` on any wgpu opaque handle to get a unique hashable identity for the given resource. This is now available without the feature flag.
By @cwfitzgerald in [#4841](https://github.com/gfx-rs/wgpu/pull/4841).

#### `dx12` and `metal` Backend Crate Features

wgpu now exposes backend feature for the Direct3D 12 (`dx12`) and Metal (`metal`) backend. These are enabled by default, but don't do anything when not targeting the corresponding OS.
By @daxpedda in [#4815](https://github.com/gfx-rs/wgpu/pull/4815).

### Direct3D 11 Backend Removal

This backend had no functionality, and with the recent support for GL on Desktop, which allows wgpu to run on older devices, there was no need to keep this backend.
By @valaphee in [#4828](https://github.com/gfx-rs/wgpu/pull/4828).

### `WGPU_ALLOW_UNDERLYING_NONCOMPLIANT_ADAPTER` Environment Variable

This adds a way to allow a Vulkan driver which is non-compliant per `VK_KHR_driver_properties` to be enumerated. This is intended for testing new Vulkan drivers which are not Vulkan compliant yet.
By @i509VCB in [#4754](https://github.com/gfx-rs/wgpu/pull/4754).

### `DeviceExt::create_texture_with_data` allows Mip-Major Data

Previously, `DeviceExt::create_texture_with_data` only allowed data to be provided in layer major order. There is now a `order` parameter which allows you to specify if the data is in layer major or mip major order.

```diff
    let tex = ctx.device.create_texture_with_data(
        &queue,
        &descriptor,
+       wgpu::util::TextureDataOrder::LayerMajor,
        src_data,
    );
```

By @cwfitzgerald in [#4780](https://github.com/gfx-rs/wgpu/pull/4780).

### Safe & unified Surface Creation

It is now possible to safely create a `wgpu::Surface` with `wgpu::Instance::create_surface()` by letting `wgpu::Surface` hold a lifetime to `window`.
Passing an owned value `window` to `Surface` will return a `wgpu::Surface<'static>`.

All possible safe variants (owned windows and web canvases) are grouped using `wgpu::SurfaceTarget`.
Conversion to `wgpu::SurfaceTarget` is automatic for any type implementing `raw-window-handle`'s `HasWindowHandle` & `HasDisplayHandle` traits, i.e. most window types.
For web canvas types this has to be done explicitly:

```rust
let surface: wgpu::Surface<'static> = instance.create_surface(wgpu::SurfaceTarget::Canvas(my_canvas))?;
```

All unsafe variants are now grouped under `wgpu::Instance::create_surface_unsafe` which takes the
`wgpu::SurfaceTargetUnsafe` enum and always returns `wgpu::Surface<'static>`.

In order to create a `wgpu::Surface<'static>` without passing ownership of the window use
`wgpu::SurfaceTargetUnsafe::from_window`:

```rust
let surface = unsafe {
  instance.create_surface_unsafe(wgpu::SurfaceTargetUnsafe::from_window(&my_window))?
};
```

The easiest way to make this code safe is to use shared ownership:

```rust
let window: Arc<winit::Window>;
// ...
let surface = instance.create_surface(window.clone())?;
```

All platform specific surface creation using points have moved into `SurfaceTargetUnsafe` as well.
For example:

Safety by @daxpedda in [#4597](https://github.com/gfx-rs/wgpu/pull/4597)
Unification by @wumpf in [#4984](https://github.com/gfx-rs/wgpu/pull/4984)

### Add partial Support for WGSL Abstract Types

Abstract types make numeric literals easier to use, by
automatically converting literals and other constant expressions
from abstract numeric types to concrete types when safe and
necessary. For example, to build a vector of floating-point
numbers, naga previously made you write:

```rust
vec3<f32>(1.0, 2.0, 3.0)
```

With this change, you can now simply write:

```rust
vec3<f32>(1, 2, 3)
```

Even though the literals are abstract integers, naga recognizes
that it is safe and necessary to convert them to `f32` values in
order to build the vector. You can also use abstract values as
initializers for global constants and global and local variables,
like this:

```rust
var unit_x: vec2<f32> = vec2(1, 0);
```

The literals `1` and `0` are abstract integers, and the expression
`vec2(1, 0)` is an abstract vector. However, naga recognizes that
it can convert that to the concrete type `vec2<f32>` to satisfy
the given type of `unit_x`.
The WGSL specification permits abstract integers and
floating-point values in almost all contexts, but naga's support
for this is still incomplete. Many WGSL operators and builtin
functions are specified to produce abstract results when applied
to abstract inputs, but for now naga simply concretizes them all
before applying the operation. We will expand naga's abstract type
support in subsequent pull requests.
As part of this work, the public types `naga::ScalarKind` and
`naga::Literal` now have new variants, `AbstractInt` and `AbstractFloat`.

By @jimblandy in [#4743](https://github.com/gfx-rs/wgpu/pull/4743), [#4755](https://github.com/gfx-rs/wgpu/pull/4755).

### `Instance::enumerate_adapters` now returns `Vec<Adapter>` instead of an `ExactSizeIterator`

This allows us to support WebGPU and WebGL in the same binary.

```diff
- let adapters: Vec<Adapter> = instance.enumerate_adapters(wgpu::Backends::all()).collect();
+ let adapters: Vec<Adapter> = instance.enumerate_adapters(wgpu::Backends::all());
```

By @wumpf in [#5044](https://github.com/gfx-rs/wgpu/pull/5044)

### `device.poll()` now returns a `MaintainResult` instead of a `bool`

This is a forward looking change, as we plan to add more information to the `MaintainResult` in the future.
This enum has the same data as the boolean, but with some useful helper functions.

```diff
- let queue_finished: bool = device.poll(wgpu::Maintain::Wait);
+ let queue_finished: bool = device.poll(wgpu::Maintain::Wait).is_queue_empty();
```

By @cwfitzgerald in [#5053](https://github.com/gfx-rs/wgpu/pull/5053)

### New Features

#### General

- Added `DownlevelFlags::VERTEX_AND_INSTANCE_INDEX_RESPECTS_RESPECTIVE_FIRST_VALUE_IN_INDIRECT_DRAW` to know if `@builtin(vertex_index)` and `@builtin(instance_index)` will respect the `first_vertex` / `first_instance` in indirect calls. If this is not present, both will always start counting from 0. Currently enabled on all backends except DX12. By @cwfitzgerald in [#4722](https://github.com/gfx-rs/wgpu/pull/4722).
- Added support for the `FLOAT32_FILTERABLE` feature (web and native, corresponds to WebGPU's `float32-filterable`). By @almarklein in [#4759](https://github.com/gfx-rs/wgpu/pull/4759).
- GPU buffer memory is released during "lose the device". By @bradwerth in [#4851](https://github.com/gfx-rs/wgpu/pull/4851).
- wgpu and wgpu-core cargo feature flags are now documented on docs.rs. By @wumpf in [#4886](https://github.com/gfx-rs/wgpu/pull/4886).
- DeviceLostClosure is guaranteed to be invoked exactly once. By @bradwerth in [#4862](https://github.com/gfx-rs/wgpu/pull/4862).
- Log vulkan validation layer messages during instance creation and destruction: By @exrook in [#4586](https://github.com/gfx-rs/wgpu/pull/4586).
- `TextureFormat::block_size` is deprecated, use `TextureFormat::block_copy_size` instead: By @wumpf in [#4647](https://github.com/gfx-rs/wgpu/pull/4647).
- Rename of `DispatchIndirect`, `DrawIndexedIndirect`, and `DrawIndirect` types in the `wgpu::util` module to `DispatchIndirectArgs`, `DrawIndexedIndirectArgs`, and `DrawIndirectArgs`. By @cwfitzgerald in [#4723](https://github.com/gfx-rs/wgpu/pull/4723).
- Make the size parameter of `encoder.clear_buffer` an `Option<u64>` instead of `Option<NonZero<u64>>`. By @nical in [#4737](https://github.com/gfx-rs/wgpu/pull/4737).
- Reduce the `info` log level noise. By @nical in [#4769](https://github.com/gfx-rs/wgpu/pull/4769), [#4711](https://github.com/gfx-rs/wgpu/pull/4711) and [#4772](https://github.com/gfx-rs/wgpu/pull/4772)
- Rename `features` & `limits` fields of `DeviceDescriptor` to `required_features` & `required_limits`. By @teoxoy in [#4803](https://github.com/gfx-rs/wgpu/pull/4803).
- `SurfaceConfiguration` now exposes `desired_maximum_frame_latency` which was previously hard-coded to 2. By setting it to 1 you can reduce latency under the risk of making GPU & CPU work sequential. Currently, on DX12 this affects the `MaximumFrameLatency`, on all other backends except OpenGL the size of the swapchain (on OpenGL this has no effect). By @emilk & @wumpf in [#4899](https://github.com/gfx-rs/wgpu/pull/4899)

#### OpenGL

- `@builtin(instance_index)` now properly reflects the range provided in the draw call instead of always counting from 0. By @cwfitzgerald in [#4722](https://github.com/gfx-rs/wgpu/pull/4722).
- Desktop GL now supports `POLYGON_MODE_LINE` and `POLYGON_MODE_POINT`. By @valaphee in [#4836](https://github.com/gfx-rs/wgpu/pull/4836).

#### naga

- naga's WGSL front end now allows operators to produce values with abstract types, rather than concretizing their operands. By @jimblandy in [#4850](https://github.com/gfx-rs/wgpu/pull/4850) and [#4870](https://github.com/gfx-rs/wgpu/pull/4870).
- naga's WGSL front and back ends now have experimental support for 64-bit floating-point literals: `1.0lf` denotes an `f64` value. There has been experimental support for an `f64` type for a while, but until now there was no syntax for writing literals with that type. As before, naga module validation rejects `f64` values unless `naga::valid::Capabilities::FLOAT64` is requested. By @jimblandy in [#4747](https://github.com/gfx-rs/wgpu/pull/4747).
- naga constant evaluation can now process binary operators whose operands are both vectors. By @jimblandy in [#4861](https://github.com/gfx-rs/wgpu/pull/4861).
- Add `--bulk-validate` option to naga CLI. By @jimblandy in [#4871](https://github.com/gfx-rs/wgpu/pull/4871).
- naga's `cargo xtask validate` now runs validation jobs in parallel, using the [jobserver](https://crates.io/crates/jobserver) protocol to limit concurrency, and offers a `validate all` subcommand, which runs all available validation types. By @jimblandy in [#4902](https://github.com/gfx-rs/wgpu/pull/4902).
- Remove `span` and `validate` features. Always fully validate shader modules, and always track source positions for use in error messages. By @teoxoy in [#4706](https://github.com/gfx-rs/wgpu/pull/4706).
- Introduce a new `Scalar` struct type for use in naga's IR, and update all frontend, middle, and backend code appropriately. By @jimblandy in [#4673](https://github.com/gfx-rs/wgpu/pull/4673).
- Add more metal keywords. By @fornwall in [#4707](https://github.com/gfx-rs/wgpu/pull/4707).
- Add a new `naga::Literal` variant, `I64`, for signed 64-bit literals. [#4711](https://github.com/gfx-rs/wgpu/pull/4711).
- Emit and init `struct` member padding always. By @ErichDonGubler in [#4701](https://github.com/gfx-rs/wgpu/pull/4701).
- In WGSL output, always include the `i` suffix on `i32` literals. By @jimblandy in [#4863](https://github.com/gfx-rs/wgpu/pull/4863).
- In WGSL output, always include the `f` suffix on `f32` literals. By @jimblandy in [#4869](https://github.com/gfx-rs/wgpu/pull/4869).

### Bug Fixes

#### General

- `BufferMappedRange` trait is now `WasmNotSendSync`, i.e. it is `Send`/`Sync` if not on wasm or `fragile-send-sync-non-atomic-wasm` is enabled. By @wumpf in [#4818](https://github.com/gfx-rs/wgpu/pull/4818).
- Align `wgpu_types::CompositeAlphaMode` serde serialization to spec. By @littledivy in [#4940](https://github.com/gfx-rs/wgpu/pull/4940).
- Fix error message of `ConfigureSurfaceError::TooLarge`. By @Dinnerbone in [#4960](https://github.com/gfx-rs/wgpu/pull/4960).
- Fix dropping of `DeviceLostCallbackC` params. By @bradwerth in [#5032](https://github.com/gfx-rs/wgpu/pull/5032).
- Fixed a number of panics. By @nical in [#4999](https://github.com/gfx-rs/wgpu/pull/4999), [#5014](https://github.com/gfx-rs/wgpu/pull/5014), [#5024](https://github.com/gfx-rs/wgpu/pull/5024), [#5025](https://github.com/gfx-rs/wgpu/pull/5025), [#5026](https://github.com/gfx-rs/wgpu/pull/5026), [#5027](https://github.com/gfx-rs/wgpu/pull/5027), [#5028](https://github.com/gfx-rs/wgpu/pull/5028) and [#5042](https://github.com/gfx-rs/wgpu/pull/5042).
- No longer validate surfaces against their allowed extent range on configure. This caused warnings that were almost impossible to avoid. As before, the resulting behavior depends on the compositor. By @wumpf in [#4796](https://github.com/gfx-rs/wgpu/pull/4796).

#### DX12

- Fixed D3D12_SUBRESOURCE_FOOTPRINT calculation for block compressed textures which caused a crash with `Queue::write_texture` on DX12. By @DTZxPorter in [#4990](https://github.com/gfx-rs/wgpu/pull/4990).

#### Vulkan

- Use `VK_EXT_robustness2` only when not using an outdated intel iGPU driver. By @TheoDulka in [#4602](https://github.com/gfx-rs/wgpu/pull/4602).

#### WebGPU

- Allow calling `BufferSlice::get_mapped_range` multiple times on the same buffer slice (instead of throwing a Javascript exception). By @DouglasDwyer in [#4726](https://github.com/gfx-rs/wgpu/pull/4726).

#### WGL

- Create a hidden window per `wgpu::Instance` instead of sharing a global one. By @Zoxc in [#4603](https://github.com/gfx-rs/wgpu/issues/4603)

#### naga

- Make module compaction preserve the module's named types, even if they are unused. By @jimblandy in [#4734](https://github.com/gfx-rs/wgpu/pull/4734).
- Improve algorithm used by module compaction. By @jimblandy in [#4662](https://github.com/gfx-rs/wgpu/pull/4662).
- When reading GLSL, fix the argument types of the double-precision floating-point overloads of the `dot`, `reflect`, `distance`, and `ldexp` builtin functions. Correct the WGSL generated for constructing 64-bit floating-point matrices. Add tests for all the above. By @jimblandy in [#4684](https://github.com/gfx-rs/wgpu/pull/4684).
- Allow naga's IR types to represent matrices with elements elements of any scalar kind. This makes it possible for naga IR types to represent WGSL abstract matrices. By @jimblandy in [#4735](https://github.com/gfx-rs/wgpu/pull/4735).
- Preserve the source spans for constants and expressions correctly across module compaction. By @jimblandy in [#4696](https://github.com/gfx-rs/wgpu/pull/4696).
- Record the names of WGSL `alias` declarations in naga IR `Type`s. By @jimblandy in [#4733](https://github.com/gfx-rs/wgpu/pull/4733).

#### Metal

- Allow the `COPY_SRC` usage flag in surface configuration. By @Toqozz in [#4852](https://github.com/gfx-rs/wgpu/pull/4852).

### Examples

- remove winit dependency from hello-compute example. By @psvri in [#4699](https://github.com/gfx-rs/wgpu/pull/4699)
- hello-compute example fix failure with `wgpu error: Validation Error` if arguments are missing. By @vilcans in [#4939](https://github.com/gfx-rs/wgpu/pull/4939).
- Made the examples page not crash on Chrome on Android, and responsive to screen sizes. By @Dinnerbone in [#4958](https://github.com/gfx-rs/wgpu/pull/4958).

## v0.18.2 (2023-12-06)

This release includes `naga` version 0.14.2. The crates `wgpu-core`, `wgpu-hal` are still at `0.18.1` and the crates `wgpu` and `wgpu-types` are still at `0.18.0`.

### Bug Fixes

#### naga

- When evaluating const-expressions and generating SPIR-V, properly handle `Compose` expressions whose operands are `Splat` expressions. Such expressions are created and marked as constant by the constant evaluator. By @jimblandy in [#4695](https://github.com/gfx-rs/wgpu/pull/4695).

## v0.18.1 (2023-11-15)

(naga version 0.14.1)

### Bug Fixes

#### General

- Fix panic in `Surface::configure` in debug builds. By @cwfitzgerald in [#4635](https://github.com/gfx-rs/wgpu/pull/4635)
- Fix crash when all the following are true: By @teoxoy in #[#4642](https://github.com/gfx-rs/wgpu/pull/4642)
  - Passing a naga module directly to `Device::create_shader_module`.
  - `InstanceFlags::DEBUG` is enabled.

#### DX12

- Always use HLSL 2018 when using DXC to compile HLSL shaders. By @daxpedda in [#4629](https://github.com/gfx-rs/wgpu/pull/4629)

#### Metal

- In Metal Shading Language output, fix issue where local variables were sometimes using variable names from previous functions. By @DJMcNab in [#4594](https://github.com/gfx-rs/wgpu/pull/4594)

## v0.18.0 (2023-10-25)

For naga changelogs at or before v0.14.0. See [naga's changelog](naga/CHANGELOG.md).

### Desktop OpenGL 3.3+ Support on Windows

We now support OpenGL on Windows! This brings support for a vast majority of the hardware that used to be covered by our DX11 backend. As of this writing we support OpenGL 3.3+, though there are efforts to reduce that further.

This allows us to cover the last 12 years of Intel GPUs (starting with Ivy Bridge; aka 3xxx), and the last 16 years of AMD (starting with Terascale; aka HD 2000) / NVidia GPUs (starting with Tesla; aka GeForce 8xxx).

By @Zoxc in [#4248](https://github.com/gfx-rs/wgpu/pull/4248)

### Timestamp Queries Supported on Metal and OpenGL

Timestamp queries are now supported on both Metal and Desktop OpenGL. On Apple chips on Metal, they only support timestamp queries in command buffers or in the renderpass descriptor,
they do not support them inside a pass.

Metal: By @Wumpf in [#4008](https://github.com/gfx-rs/wgpu/pull/4008)
OpenGL: By @Zoxc in [#4267](https://github.com/gfx-rs/wgpu/pull/4267)

### Render/Compute Pass Query Writes

Addition of the `TimestampWrites` type to compute and render pass descriptors to allow profiling on tilers which do not support timestamps inside passes.

Added [an example](https://github.com/gfx-rs/wgpu/tree/trunk/examples/timestamp-queries) to demonstrate the various kinds of timestamps.

Additionally, metal now supports timestamp queries!

By @FL33TW00D & @wumpf in [#3636](https://github.com/gfx-rs/wgpu/pull/3636).

### Occlusion Queries

We now support binary occlusion queries! This allows you to determine if any of the draw calls within the query drew any pixels.

Use the new `occlusion_query_set` field on `RenderPassDescriptor` to give a query set that occlusion queries will write to.

```diff
let mut rpass = encoder.begin_render_pass(&wgpu::RenderPassDescriptor {
    // ...
+   occlusion_query_set: Some(&my_occlusion_query_set),
});
```

Within the renderpass do the following to write the occlusion query results to the query set at the given index:

```rust
rpass.begin_occlusion_query(index);
rpass.draw(...);
rpass.draw(...);
rpass.end_occlusion_query();
```

These are binary occlusion queries, so the result will be either 0 or an unspecified non-zero value.

By @Valaphee in [#3402](https://github.com/gfx-rs/wgpu/pull/3402)

### Shader Improvements

```rust
// WGSL constant expressions are now supported!
const BLAH: u32 = 1u + 1u;

// `rgb10a2uint` and `bgra8unorm` can now be used as a storage image format.
var image: texture_storage_2d<rgb10a2uint, write>;
var image: texture_storage_2d<bgra8unorm, write>;

// You can now use dual source blending!
struct FragmentOutput{
    @location(0) source1: vec4<f32>,
    @location(0) @second_blend_source source2: vec4<f32>,
}

// `modf`/`frexp` now return structures
let result = modf(1.5);
result.fract == 0.5;
result.whole == 1.0;

let result = frexp(1.5);
result.fract == 0.75;
result.exponent == 2i;

// `modf`/`frexp` are currently disabled on GLSL and SPIR-V input.
```

### Shader Validation Improvements

```rust
// Cannot get pointer to a workgroup variable
fn func(p: ptr<workgroup, u32>); // ERROR

// Cannot create Inf/NaN through constant expressions
const INF: f32 = 3.40282347e+38 + 1.0; // ERROR
const NAN: f32 = 0.0 / 0.0; // ERROR

// `outerProduct` function removed

// Error on repeated or missing `@workgroup_size()`
@workgroup_size(1) @workgroup_size(2) // ERROR
fn compute_main() {}

// Error on repeated attributes.
fn fragment_main(@location(0) @location(0) location_0: f32) // ERROR
```

### RenderPass `StoreOp` is now Enumeration

`wgpu::Operations::store` used to be an underdocumented boolean value,
causing misunderstandings of the effect of setting it to `false`.

The API now more closely resembles WebGPU which distinguishes between `store` and `discard`,
see [WebGPU spec on GPUStoreOp](https://gpuweb.github.io/gpuweb/#enumdef-gpustoreop).

```diff
// ...
depth_ops: Some(wgpu::Operations {
    load: wgpu::LoadOp::Clear(1.0),
-   store: false,
+   store: wgpu::StoreOp::Discard,
}),
// ...
```

By @wumpf in [#4147](https://github.com/gfx-rs/wgpu/pull/4147)

### Instance Descriptor Settings

The instance descriptor grew two more fields: `flags` and `gles_minor_version`.

`flags` allow you to toggle the underlying api validation layers, debug information about shaders and objects in capture programs, and the ability to discard labels

`gles_minor_version` is a rather niche feature that allows you to force the GLES backend to use a specific minor version, this is useful to get ANGLE to enable more than GLES 3.0.

```diff
let instance = wgpu::Instance::new(InstanceDescriptor {
    ...
+   flags: wgpu::InstanceFlags::default()
+   gles_minor_version: wgpu::Gles3MinorVersion::Automatic,
});
```

`gles_minor_version`: By @PJB3005 in [#3998](https://github.com/gfx-rs/wgpu/pull/3998)
`flags`: By @nical in [#4230](https://github.com/gfx-rs/wgpu/pull/4230)

### Many New Examples!

- Added the following examples: By @JustAnotherCodemonkey in [#3885](https://github.com/gfx-rs/wgpu/pull/3885).
  - [repeated-compute](https://github.com/gfx-rs/wgpu/tree/trunk/examples/repeated-compute)
  - [storage-texture](https://github.com/gfx-rs/wgpu/tree/trunk/examples/storage-texture)
  - [render-to-texture](https://github.com/gfx-rs/wgpu/tree/trunk/examples/render-to-texture)
  - [uniform-values](https://github.com/gfx-rs/wgpu/tree/trunk/examples/uniform-values)
  - [hello-workgroups](https://github.com/gfx-rs/wgpu/tree/trunk/examples/hello-workgroups)
  - [hello-synchronization](https://github.com/gfx-rs/wgpu/tree/trunk/examples/hello-synchronization)

### Revamped Testing Suite

Our testing harness was completely revamped and now automatically runs against all gpus in the system, shows the expected status of every test, and is tolerant to flakes.

Additionally, we have filled out our CI to now run the latest versions of WARP and Mesa. This means we can test even more features on CI than before.

By @cwfitzgerald in [#3873](https://github.com/gfx-rs/wgpu/pull/3873)

### The GLES backend is now optional on macOS

The `angle` feature flag has to be set for the GLES backend to be enabled on Windows & macOS.

By @teoxoy in [#4185](https://github.com/gfx-rs/wgpu/pull/4185)

### Added/New Features

- Re-export naga. By @exrook in [#4172](https://github.com/gfx-rs/wgpu/pull/4172)
- Add WinUI 3 SwapChainPanel support. By @ddrboxman in [#4191](https://github.com/gfx-rs/wgpu/pull/4191)

### Changes

#### General

- Omit texture store bound checks since they are no-ops if out of bounds on all APIs. By @teoxoy in [#3975](https://github.com/gfx-rs/wgpu/pull/3975)
- Validate `DownlevelFlags::READ_ONLY_DEPTH_STENCIL`. By @teoxoy in [#4031](https://github.com/gfx-rs/wgpu/pull/4031)
- Add validation in accordance with WebGPU `setViewport` valid usage for `x`, `y` and `this.[[attachment_size]]`. By @James2022-rgb in [#4058](https://github.com/gfx-rs/wgpu/pull/4058)
- `wgpu::CreateSurfaceError` and `wgpu::RequestDeviceError` now give details of the failure, but no longer implement `PartialEq` and cannot be constructed. By @kpreid in [#4066](https://github.com/gfx-rs/wgpu/pull/4066) and [#4145](https://github.com/gfx-rs/wgpu/pull/4145)
- Make `WGPU_POWER_PREF=none` a valid value. By @fornwall in [4076](https://github.com/gfx-rs/wgpu/pull/4076)
- Support dual source blending in OpenGL ES, Metal, Vulkan & DX12. By @freqmod in [4022](https://github.com/gfx-rs/wgpu/pull/4022)
- Add stub support for device destroy and device validity. By @bradwerth in [4163](https://github.com/gfx-rs/wgpu/pull/4163) and in [4212](https://github.com/gfx-rs/wgpu/pull/4212)
- Add trace-level logging for most entry points in wgpu-core By @nical in [4183](https://github.com/gfx-rs/wgpu/pull/4183)
- Add `Rgb10a2Uint` format. By @teoxoy in [4199](https://github.com/gfx-rs/wgpu/pull/4199)
- Validate that resources are used on the right device. By @nical in [4207](https://github.com/gfx-rs/wgpu/pull/4207)
- Expose instance flags.
- Add support for the bgra8unorm-storage feature. By @jinleili and @nical in [#4228](https://github.com/gfx-rs/wgpu/pull/4228)
- Calls to lost devices now return `DeviceError::Lost` instead of `DeviceError::Invalid`. By @bradwerth in [#4238]([https://github.com/gfx-rs/wgpu/pull/4238])
- Let the `"strict_asserts"` feature enable check that wgpu-core's lock-ordering tokens are unique per thread. By @jimblandy in [#4258]([https://github.com/gfx-rs/wgpu/pull/4258])
- Allow filtering labels out before they are passed to GPU drivers by @nical in [https://github.com/gfx-rs/wgpu/pull/4246](4246)
- `DeviceLostClosure` callback mechanism provided so user agents can resolve `GPUDevice.lost` Promises at the appropriate time by @bradwerth in [#4645](https://github.com/gfx-rs/wgpu/pull/4645)

#### Vulkan

- Rename `wgpu_hal::vulkan::Instance::required_extensions` to `desired_extensions`. By @jimblandy in [#4115](https://github.com/gfx-rs/wgpu/pull/4115)
- Don't bother calling `vkFreeCommandBuffers` when `vkDestroyCommandPool` will take care of that for us. By @jimblandy in [#4059](https://github.com/gfx-rs/wgpu/pull/4059)

#### DX12

- Bump `gpu-allocator` to 0.23. By @Elabajaba in [#4198](https://github.com/gfx-rs/wgpu/pull/4198)

### Documentation

- Use WGSL for VertexFormat example types. By @ScanMountGoat in [#4035](https://github.com/gfx-rs/wgpu/pull/4035)
- Fix description of `Features::TEXTURE_COMPRESSION_ASTC_HDR` in [#4157](https://github.com/gfx-rs/wgpu/pull/4157)

### Bug Fixes

#### General

- Derive storage bindings via `naga::StorageAccess` instead of `naga::GlobalUse`. By @teoxoy in [#3985](https://github.com/gfx-rs/wgpu/pull/3985).
- `Queue::on_submitted_work_done` callbacks will now always be called after all previous `BufferSlice::map_async` callbacks, even when there are no active submissions. By @cwfitzgerald in [#4036](https://github.com/gfx-rs/wgpu/pull/4036).
- Fix `clear` texture views being leaked when `wgpu::SurfaceTexture` is dropped before it is presented. By @rajveermalviya in [#4057](https://github.com/gfx-rs/wgpu/pull/4057).
- Add `Feature::SHADER_UNUSED_VERTEX_OUTPUT` to allow unused vertex shader outputs. By @Aaron1011 in [#4116](https://github.com/gfx-rs/wgpu/pull/4116).
- Fix a panic in `surface_configure`. By @nical in [#4220](https://github.com/gfx-rs/wgpu/pull/4220) and [#4227](https://github.com/gfx-rs/wgpu/pull/4227)
- Pipelines register their implicit layouts in error cases. By @bradwerth in [#4624](https://github.com/gfx-rs/wgpu/pull/4624)
- Better handle explicit destruction of textures and buffers. By @nical in [#4657](https://github.com/gfx-rs/wgpu/pull/4657)

#### Vulkan

- Fix enabling `wgpu::Features::PARTIALLY_BOUND_BINDING_ARRAY` not being actually enabled in vulkan backend. By @39ali in[#3772](https://github.com/gfx-rs/wgpu/pull/3772).
- Don't pass `vk::InstanceCreateFlags::ENUMERATE_PORTABILITY_KHR` unless the `VK_KHR_portability_enumeration` extension is available. By @jimblandy in[#4038](https://github.com/gfx-rs/wgpu/pull/4038).
- Enhancement of [#4038], using ash's definition instead of hard-coded c_str. By @hybcloud in[#4044](https://github.com/gfx-rs/wgpu/pull/4044).
- Enable vulkan presentation on (Linux) Intel Mesa >= v21.2. By @flukejones in[#4110](https://github.com/gfx-rs/wgpu/pull/4110)

#### DX12

- DX12 doesn't support `Features::POLYGON_MODE_POINT``. By @teoxoy in [#4032](https://github.com/gfx-rs/wgpu/pull/4032).
- Set `Features::VERTEX_WRITABLE_STORAGE` based on the right feature level. By @teoxoy in [#4033](https://github.com/gfx-rs/wgpu/pull/4033).

#### Metal

- Ensure that MTLCommandEncoder calls endEncoding before it is deallocated. By @bradwerth in [#4023](https://github.com/gfx-rs/wgpu/pull/4023)

#### WebGPU

- Ensure that limit requests and reporting is done correctly. By @OptimisticPeach in [#4107](https://github.com/gfx-rs/wgpu/pull/4107)
- Validate usage of polygon mode. By @teoxoy in [#4196](https://github.com/gfx-rs/wgpu/pull/4196)

#### GLES

- enable/disable blending per attachment only when available (on ES 3.2 or higher). By @teoxoy in [#4234](https://github.com/gfx-rs/wgpu/pull/4234)

### Documentation

- Add an overview of `RenderPass` and how render state works. By @kpreid in [#4055](https://github.com/gfx-rs/wgpu/pull/4055)

### Examples

- Created `wgpu-example::utils` module to contain misc functions and such that are common code but aren't part of the example framework. Add to it the functions `output_image_wasm` and `output_image_native`, both for outputting `Vec<u8>` RGBA images either to the disc or the web page. By @JustAnotherCodemonkey in [#3885](https://github.com/gfx-rs/wgpu/pull/3885).
- Removed `capture` example as it had issues (did not run on wasm) and has been replaced by `render-to-texture` (see above). By @JustAnotherCodemonkey in [#3885](https://github.com/gfx-rs/wgpu/pull/3885).

## v0.17.2 (2023-10-03)

### Bug Fixes

#### Vulkan

- Fix x11 hang while resizing on vulkan. @Azorlogh in [#4184](https://github.com/gfx-rs/wgpu/pull/4184).

## v0.17.1 (2023-09-27)

### Added/New Features

- Add `get_mapped_range_as_array_buffer` for faster buffer read-backs in wasm builds. By @ryankaplan in [#4042] (https://github.com/gfx-rs/wgpu/pull/4042).

### Bug Fixes

#### DX12

- Fix panic on resize when using DX12. By @cwfitzgerald in [#4106](https://github.com/gfx-rs/wgpu/pull/4106)

#### Vulkan

- Suppress validation error caused by OBS layer. This was also fixed upstream. By @cwfitzgerald in [#4002](https://github.com/gfx-rs/wgpu/pull/4002)
- Work around bug in nvidia's vkCmdFillBuffer implementation. By @cwfitzgerald in [#4132](https://github.com/gfx-rs/wgpu/pull/4132).

## v0.17.0 (2023-07-20)

This is the first release that featured `wgpu-info` as a binary crate for getting information about what devices wgpu sees in your system. It can dump the information in both human readable format and json.

### Major Changes

This release was fairly minor as breaking changes go.

#### `wgpu` types now `!Send` `!Sync` on wasm

Up until this point, wgpu has made the assumption that threads do not exist on wasm. With the rise of libraries like [`wasm_thread`](https://crates.io/crates/wasm_thread) making it easier and easier to do wasm multithreading this assumption is no longer sound. As all wgpu objects contain references into the JS heap, they cannot leave the thread they started on.

As we understand that this change might be very inconvenient for users who don't care about wasm threading, there is a crate feature which re-enables the old behavior: `fragile-send-sync-non-atomic-wasm`. So long as you don't compile your code with `-Ctarget-feature=+atomics`, `Send` and `Sync` will be implemented again on wgpu types on wasm. As the name implies, especially for libraries, this is very fragile, as you don't know if a user will want to compile with atomics (and therefore threads) or not.

By @daxpedda in [#3691](https://github.com/gfx-rs/wgpu/pull/3691)

#### Power Preference is now optional

The `power_preference` field of `RequestAdapterOptions` is now optional. If it is `PowerPreference::None`, we will choose the first available adapter, preferring GPU adapters over CPU adapters.

By @Aaron1011 in [#3903](https://github.com/gfx-rs/wgpu/pull/3903)

#### `initialize_adapter_from_env` argument changes

Removed the backend_bits parameter from `initialize_adapter_from_env` and `initialize_adapter_from_env_or_default`. If you want to limit the backends used by this function, only enable the wanted backends in the instance.

Added a compatible surface parameter, to ensure the given device is able to be presented onto the given surface.

```diff
- wgpu::util::initialize_adapter_from_env(instance, backend_bits);
+ wgpu::util::initialize_adapter_from_env(instance, Some(&compatible_surface));
```

By @fornwall in [#3904](https://github.com/gfx-rs/wgpu/pull/3904) and [#3905](https://github.com/gfx-rs/wgpu/pull/3905)

#### Misc Breaking Changes

- Change `AdapterInfo::{device,vendor}` to be `u32` instead of `usize`. By @ameknite in [#3760](https://github.com/gfx-rs/wgpu/pull/3760)

### Changes

- Added support for importing external buffers using `buffer_from_raw` (Dx12, Metal, Vulkan) and `create_buffer_from_hal`. By @AdrianEddy in [#3355](https://github.com/gfx-rs/wgpu/pull/3355)

#### Vulkan

- Work around [Vulkan-ValidationLayers#5671](https://github.com/KhronosGroup/Vulkan-ValidationLayers/issues/5671) by ignoring reports of violations of [VUID-vkCmdEndDebugUtilsLabelEXT-commandBuffer-01912](https://registry.khronos.org/vulkan/specs/1.3-extensions/html/vkspec.html#VUID-vkCmdEndDebugUtilsLabelEXT-commandBuffer-01912). By @jimblandy in [#3809](https://github.com/gfx-rs/wgpu/pull/3809).

### Added/New Features

#### General

- Empty scissor rects are allowed now, matching the specification. by @PJB3005 in [#3863](https://github.com/gfx-rs/wgpu/pull/3863).
- Add back components info to `TextureFormat`s. By @teoxoy in [#3843](https://github.com/gfx-rs/wgpu/pull/3843).
- Add `get_mapped_range_as_array_buffer` for faster buffer read-backs in wasm builds. By @ryankaplan in [#4042] (https://github.com/gfx-rs/wgpu/pull/4042).

### Documentation

- Better documentation for draw, draw_indexed, set_viewport and set_scissor_rect. By @genusistimelord in [#3860](https://github.com/gfx-rs/wgpu/pull/3860)
- Fix link to `GPUVertexBufferLayout`. By @fornwall in [#3906](https://github.com/gfx-rs/wgpu/pull/3906)
- Document feature requirements for `DEPTH32FLOAT_STENCIL8` by @ErichDonGubler in [#3734](https://github.com/gfx-rs/wgpu/pull/3734).
- Flesh out docs. for `AdapterInfo::{device,vendor}` by @ErichDonGubler in [#3763](https://github.com/gfx-rs/wgpu/pull/3763).
- Spell out which sizes are in bytes. By @jimblandy in [#3773](https://github.com/gfx-rs/wgpu/pull/3773).
- Validate that `descriptor.usage` is not empty in `create_buffer` by @nical in [#3928](https://github.com/gfx-rs/wgpu/pull/3928)
- Update `max_bindings_per_bind_group` limit to reflect spec changes by @ErichDonGubler and @nical in [#3943](https://github.com/gfx-rs/wgpu/pull/3943) [#3942](https://github.com/gfx-rs/wgpu/pull/3942)
- Add better docs for `Limits`, listing the actual limits returned by `downlevel_defaults` and `downlevel_webgl2_defaults` by @JustAnotherCodemonkey in [#3988](https://github.com/gfx-rs/wgpu/pull/3988)

### Bug Fixes

#### General

- Fix order of arguments to glPolygonOffset by @komadori in [#3783](https://github.com/gfx-rs/wgpu/pull/3783).
- Fix OpenGL/EGL backend not respecting non-sRGB texture formats in `SurfaceConfiguration`. by @liquidev in [#3817](https://github.com/gfx-rs/wgpu/pull/3817)
- Make write- and read-only marked buffers match non-readonly layouts. by @fornwall in [#3893](https://github.com/gfx-rs/wgpu/pull/3893)
- Fix leaking X11 connections. by @wez in [#3924](https://github.com/gfx-rs/wgpu/pull/3924)
- Fix ASTC feature selection in the webgl backend. by @expenses in [#3934](https://github.com/gfx-rs/wgpu/pull/3934)
- Fix Multiview to disable validation of TextureViewDimension and ArrayLayerCount. By @MalekiRe in [#3779](https://github.com/gfx-rs/wgpu/pull/3779#issue-1713269437).

#### Vulkan

- Fix incorrect aspect in barriers when using emulated Stencil8 textures. By @cwfitzgerald in [#3833](https://github.com/gfx-rs/wgpu/pull/3833).
- Implement depth-clip-control using depthClamp instead of VK_EXT_depth_clip_enable. By @AlbinBernhardssonARM [#3892](https://github.com/gfx-rs/wgpu/pull/3892).
- Fix enabling `wgpu::Features::PARTIALLY_BOUND_BINDING_ARRAY` not being actually enabled in vulkan backend. By @39ali in[#3772](https://github.com/gfx-rs/wgpu/pull/3772).

#### Metal

- Fix renderpasses being used inside of renderpasses. By @cwfitzgerald in [#3828](https://github.com/gfx-rs/wgpu/pull/3828)
- Support (simulated) visionOS. By @jinleili in [#3883](https://github.com/gfx-rs/wgpu/pull/3883)

#### DX12

- Disable suballocation on Intel Iris(R) Xe. By @xiaopengli89 in [#3668](https://github.com/gfx-rs/wgpu/pull/3668)
- Change the `max_buffer_size` limit from `u64::MAX` to `i32::MAX`. By @nical in [#4020](https://github.com/gfx-rs/wgpu/pull/4020)

#### WebGPU

- Use `get_preferred_canvas_format()` to fill `formats` of `SurfaceCapabilities`. By @jinleili in [#3744](https://github.com/gfx-rs/wgpu/pull/3744)

### Examples

- Publish examples to wgpu.rs on updates to trunk branch instead of gecko. By @paul-hansen in [#3750](https://github.com/gfx-rs/wgpu/pull/3750)
- Ignore the exception values generated by the winit resize event. By @jinleili in [#3916](https://github.com/gfx-rs/wgpu/pull/3916)

## v0.16.3 (2023-07-19)

### Changes

#### General

- Make the `Id` type that is exposed when using the `expose-ids` feature implement `Send` and `Sync` again. This was unintentionally changed by the v0.16.0 release and is now fixed.

## v0.16.2 (2023-07-09)

### Changes

#### DX12

- Increase the `max_storage_buffers_per_shader_stage` and `max_storage_textures_per_shader_stage` limits based on what the hardware supports. by @Elabajaba in [#3798]https://github.com/gfx-rs/wgpu/pull/3798

## v0.16.1 (2023-05-24)

### Bug Fixes

- Fix missing 4X MSAA support on some OpenGL backends. By @emilk in [#3780](https://github.com/gfx-rs/wgpu/pull/3780)

#### General

- Fix crash on dropping `wgpu::CommandBuffer`. By @wumpf in [#3726](https://github.com/gfx-rs/wgpu/pull/3726).
- Use `u32`s internally for bind group indices, rather than `u8`. By @ErichDonGubler in [#3743](https://github.com/gfx-rs/wgpu/pull/3743).

#### WebGPU

- Fix crash when calling `create_surface_from_canvas`. By @grovesNL in [#3718](https://github.com/gfx-rs/wgpu/pull/3718)

## v0.16.0 (2023-04-19)

### Major changes

#### Shader Changes

`type` has been replaced with `alias` to match with upstream WebGPU.

```diff
- type MyType = vec4<u32>;
+ alias MyType = vec4<u32>;
```

#### TextureFormat info API

The `TextureFormat::describe` function was removed in favor of separate functions: `block_dimensions`, `is_compressed`, `is_srgb`, `required_features`, `guaranteed_format_features`, `sample_type` and `block_size`.

```diff
- let block_dimensions = format.describe().block_dimensions;
+ let block_dimensions = format.block_dimensions();
- let is_compressed = format.describe().is_compressed();
+ let is_compressed = format.is_compressed();
- let is_srgb = format.describe().srgb;
+ let is_srgb = format.is_srgb();
- let required_features = format.describe().required_features;
+ let required_features = format.required_features();
```

Additionally `guaranteed_format_features` now takes a set of features to assume are enabled.

```diff
- let guaranteed_format_features = format.describe().guaranteed_format_features;
+ let guaranteed_format_features = format.guaranteed_format_features(device.features());
```

Additionally `sample_type` and `block_size` now take an optional `TextureAspect` and return `Option`s.

```diff
- let sample_type = format.describe().sample_type;
+ let sample_type = format.sample_type(None).expect("combined depth-stencil format requires specifying a TextureAspect");
- let block_size = format.describe().block_size;
+ let block_size = format.block_size(None).expect("combined depth-stencil format requires specifying a TextureAspect");
```

By @teoxoy in [#3436](https://github.com/gfx-rs/wgpu/pull/3436)

#### BufferUsages::QUERY_RESOLVE

Buffers used as the `destination` argument of `CommandEncoder::resolve_query_set` now have to contain the `QUERY_RESOLVE` usage instead of the `COPY_DST` usage.

```diff
  let destination = device.create_buffer(&wgpu::BufferDescriptor {
      // ...
-     usage: wgpu::BufferUsages::COPY_DST | wgpu::BufferUsages::MAP_READ,
+     usage: wgpu::BufferUsages::QUERY_RESOLVE | wgpu::BufferUsages::MAP_READ,
      mapped_at_creation: false,
  });
  command_encoder.resolve_query_set(&query_set, query_range, &destination, destination_offset);
```

By @JolifantoBambla in [#3489](https://github.com/gfx-rs/wgpu/pull/3489)

#### Renamed features

The following `Features` have been renamed.

- `SHADER_FLOAT16` -> `SHADER_F16`
- `SHADER_FLOAT64` -> `SHADER_F64`
- `SHADER_INT16` -> `SHADER_I16`
- `TEXTURE_COMPRESSION_ASTC_LDR` -> `TEXTURE_COMPRESSION_ASTC`
- `WRITE_TIMESTAMP_INSIDE_PASSES` -> `TIMESTAMP_QUERY_INSIDE_PASSES`

By @teoxoy in [#3534](https://github.com/gfx-rs/wgpu/pull/3534)

#### Anisotropic Filtering

Anisotropic filtering has been brought in line with the spec. The anisotropic clamp is now a `u16` (was a `Option<u8>`) which must be at least 1.

If the anisotropy clamp is not 1, all the filters in a sampler must be `Linear`.

```diff
SamplerDescriptor {
-    anisotropic_clamp: None,
+    anisotropic_clamp: 1,
}
```

By @cwfitzgerald in [#3610](https://github.com/gfx-rs/wgpu/pull/3610).

#### TextureFormat Names

Some texture format names have changed to get back in line with the spec.

```diff
- TextureFormat::Bc6hRgbSfloat
+ TextureFormat::Bc6hRgbFloat
```

By @cwfitzgerald in [#3671](https://github.com/gfx-rs/wgpu/pull/3671).

#### Misc Breaking Changes

- Change type of `mip_level_count` and `array_layer_count` (members of `TextureViewDescriptor` and `ImageSubresourceRange`) from `Option<NonZeroU32>` to `Option<u32>`. By @teoxoy in [#3445](https://github.com/gfx-rs/wgpu/pull/3445)
- Change type of `bytes_per_row` and `rows_per_image` (members of `ImageDataLayout`) from `Option<NonZeroU32>` to `Option<u32>`. By @teoxoy in [#3529](https://github.com/gfx-rs/wgpu/pull/3529)
- On Web, `Instance::create_surface_from_canvas()` and `create_surface_from_offscreen_canvas()` now take the canvas by value. By @daxpedda in [#3690](https://github.com/gfx-rs/wgpu/pull/3690)

### Added/New Features

#### General

- Added feature flags for ray-tracing (currently only hal): `RAY_QUERY` and `RAY_TRACING` @daniel-keitel (started by @expenses) in [#3507](https://github.com/gfx-rs/wgpu/pull/3507)

#### Vulkan

- Implemented basic ray-tracing api for acceleration structures, and ray-queries @daniel-keitel (started by @expenses) in [#3507](https://github.com/gfx-rs/wgpu/pull/3507)

#### Hal

- Added basic ray-tracing api for acceleration structures, and ray-queries @daniel-keitel (started by @expenses) in [#3507](https://github.com/gfx-rs/wgpu/pull/3507)

### Changes

#### General

- Added `TextureFormatFeatureFlags::MULTISAMPLE_X16`. By @Dinnerbone in [#3454](https://github.com/gfx-rs/wgpu/pull/3454)
- Added `BufferUsages::QUERY_RESOLVE`. By @JolifantoBambla in [#3489](https://github.com/gfx-rs/wgpu/pull/3489)
- Support stencil-only views and copying to/from combined depth-stencil textures. By @teoxoy in [#3436](https://github.com/gfx-rs/wgpu/pull/3436)
- Added `Features::SHADER_EARLY_DEPTH_TEST`. By @teoxoy in [#3494](https://github.com/gfx-rs/wgpu/pull/3494)
- All `fxhash` dependencies have been replaced with `rustc-hash`. By @james7132 in [#3502](https://github.com/gfx-rs/wgpu/pull/3502)
- Allow copying of textures with copy-compatible formats. By @teoxoy in [#3528](https://github.com/gfx-rs/wgpu/pull/3528)
- Improve attachment related errors. By @cwfitzgerald in [#3549](https://github.com/gfx-rs/wgpu/pull/3549)
- Make error descriptions all upper case. By @cwfitzgerald in [#3549](https://github.com/gfx-rs/wgpu/pull/3549)
- Don't include ANSI terminal color escape sequences in shader module validation error messages. By @jimblandy in [#3591](https://github.com/gfx-rs/wgpu/pull/3591)
- Report error messages from DXC compile. By @Davidster in [#3632](https://github.com/gfx-rs/wgpu/pull/3632)
- Error in native when using a filterable `TextureSampleType::Float` on a multisample `BindingType::Texture`. By @mockersf in [#3686](https://github.com/gfx-rs/wgpu/pull/3686)
- On Web, the size of the canvas is adjusted when using `Surface::configure()`. If the canvas was given an explicit size (via CSS), this will not affect the visual size of the canvas. By @daxpedda in [#3690](https://github.com/gfx-rs/wgpu/pull/3690)
- Added `Global::create_render_bundle_error`. By @jimblandy in [#3746](https://github.com/gfx-rs/wgpu/pull/3746)

#### WebGPU

- Implement the new checks for readonly stencils. By @JCapucho in [#3443](https://github.com/gfx-rs/wgpu/pull/3443)
- Reimplement `adapter|device_features`. By @jinleili in [#3428](https://github.com/gfx-rs/wgpu/pull/3428)
- Implement `command_encoder_resolve_query_set`. By @JolifantoBambla in [#3489](https://github.com/gfx-rs/wgpu/pull/3489)
- Add support for `Features::RG11B10UFLOAT_RENDERABLE`. By @mockersf in [#3689](https://github.com/gfx-rs/wgpu/pull/3689)

#### Vulkan

- Set `max_memory_allocation_size` via `PhysicalDeviceMaintenance3Properties`. By @jinleili in [#3567](https://github.com/gfx-rs/wgpu/pull/3567)
- Silence false-positive validation error about surface resizing. By @seabassjh in [#3627](https://github.com/gfx-rs/wgpu/pull/3627)

### Bug Fixes

#### General

- `copyTextureToTexture` src/dst aspects must both refer to all aspects of src/dst format. By @teoxoy in [#3431](https://github.com/gfx-rs/wgpu/pull/3431)
- Validate before extracting texture selectors. By @teoxoy in [#3487](https://github.com/gfx-rs/wgpu/pull/3487)
- Fix fatal errors (those which panic even if an error handler is set) not including all of the details. By @kpreid in [#3563](https://github.com/gfx-rs/wgpu/pull/3563)
- Validate shader location clashes. By @emilk in [#3613](https://github.com/gfx-rs/wgpu/pull/3613)
- Fix surfaces not being dropped until exit. By @benjaminschaaf in [#3647](https://github.com/gfx-rs/wgpu/pull/3647)

#### WebGPU

- Fix handling of `None` values for `depth_ops` and `stencil_ops` in `RenderPassDescriptor::depth_stencil_attachment`. By @niklaskorz in [#3660](https://github.com/gfx-rs/wgpu/pull/3660)
- Avoid using `WasmAbi` functions for WebGPU backend. By @grovesNL in [#3657](https://github.com/gfx-rs/wgpu/pull/3657)

#### DX12

- Use typeless formats for textures that might be viewed as srgb or non-srgb. By @teoxoy in [#3555](https://github.com/gfx-rs/wgpu/pull/3555)

#### GLES

- Set FORCE_POINT_SIZE if it is vertex shader with mesh consist of point list. By @REASY in [3440](https://github.com/gfx-rs/wgpu/pull/3440)
- Remove unwraps inside `surface.configure`. By @cwfitzgerald in [#3585](https://github.com/gfx-rs/wgpu/pull/3585)
- Fix `copy_external_image_to_texture`, `copy_texture_to_texture` and `copy_buffer_to_texture` not taking the specified index into account if the target texture is a cube map, 2D texture array or cube map array. By @daxpedda [#3641](https://github.com/gfx-rs/wgpu/pull/3641)
- Fix disabling of vertex attributes with non-consecutive locations. By @Azorlogh in [#3706](https://github.com/gfx-rs/wgpu/pull/3706)

#### Metal

- Fix metal erroring on an `array_stride` of 0. By @teoxoy in [#3538](https://github.com/gfx-rs/wgpu/pull/3538)
- `create_texture` returns an error if `new_texture` returns NULL. By @jinleili in [#3554](https://github.com/gfx-rs/wgpu/pull/3554)
- Fix shader bounds checking being ignored. By @FL33TW00D in [#3603](https://github.com/gfx-rs/wgpu/pull/3603)

#### Vulkan

- Treat `VK_SUBOPTIMAL_KHR` as `VK_SUCCESS` on Android due to rotation issues. By @James2022-rgb in [#3525](https://github.com/gfx-rs/wgpu/pull/3525)

### Examples

- Use `BufferUsages::QUERY_RESOLVE` instead of `BufferUsages::COPY_DST` for buffers used in `CommandEncoder::resolve_query_set` calls in `mipmap` example. By @JolifantoBambla in [#3489](https://github.com/gfx-rs/wgpu/pull/3489)

## v0.15.3 (2023-03-22)

### Bug Fixes

#### Metal

- Fix incorrect mipmap being sampled when using `MinLod <= 0.0` and `MaxLod >= 32.0` or when the fragment shader samples different Lods in the same quad. By @cwfitzgerald in [#3610](https://github.com/gfx-rs/wgpu/pull/3610).

#### GLES

- Fix `Vertex buffer is not big enough for the draw call.` for ANGLE/Web when rendering with instance attributes on a single instance. By @wumpf in [#3596](https://github.com/gfx-rs/wgpu/pull/3596)
- Reset all queue state between command buffers in a submit. By @jleibs [#3589](https://github.com/gfx-rs/wgpu/pull/3589)
- Reset the state of `SAMPLE_ALPHA_TO_COVERAGE` on queue reset. By @jleibs [#3589](https://github.com/gfx-rs/wgpu/pull/3589)

## wgpu-0.15.2 (2023-03-08)

### Bug Fixes

#### Metal

- Fix definition of `NSOperatingSystemVersion` to avoid potential crashes. By @grovesNL in [#3557](https://github.com/gfx-rs/wgpu/pull/3557)

#### GLES

- Enable `WEBGL_debug_renderer_info` before querying unmasked vendor/renderer to avoid crashing on emscripten in [#3519](https://github.com/gfx-rs/wgpu/pull/3519)

## wgpu-0.15.1 (2023-02-09)

### Changes

#### General

- Fix for some minor issues in comments on some features. By @Wumpf in [#3455](https://github.com/gfx-rs/wgpu/pull/3455)

#### Vulkan

- Improve format MSAA capabilities detection. By @jinleili in [#3429](https://github.com/gfx-rs/wgpu/pull/3429)

#### DX12

- Update gpu allocator to 0.22. By @Elabajaba in [#3447](https://github.com/gfx-rs/wgpu/pull/3447)

#### WebGPU

- Implement `CommandEncoder::clear_buffer`. By @raphlinus in [#3426](https://github.com/gfx-rs/wgpu/pull/3426)

### Bug Fixes

#### General

- Re-sort supported surface formats based on srgb-ness. By @cwfitzgerald in [#3444](https://github.com/gfx-rs/wgpu/pull/3444)

#### Vulkan

- Fix surface view formats validation error. By @jinleili in [#3432](https://github.com/gfx-rs/wgpu/pull/3432)

#### DX12

- Fix DXC validation issues when using a custom `dxil_path`. By @Elabajaba in [#3434](https://github.com/gfx-rs/wgpu/pull/3434)

#### GLES

- Unbind vertex buffers at end of renderpass. By @cwfitzgerald in [#3459](https://github.com/gfx-rs/wgpu/pull/3459)

#### WebGPU

- Reimplement `{adapter|device}_features`. By @jinleili in [#3428](https://github.com/gfx-rs/wgpu/pull/3428)

### Documentation

#### General

- Build for Wasm on docs.rs. By @daxpedda in [#3462](https://github.com/gfx-rs/wgpu/pull/3428)

## wgpu-0.15.0 (2023-01-25)

### Major Changes

#### WGSL Top-Level `let` is now `const`

All top level constants are now declared with `const`, catching up with the wgsl spec.

`let` is no longer allowed at the global scope, only within functions.

```diff
-let SOME_CONSTANT = 12.0;
+const SOME_CONSTANT = 12.0;
```

See https://github.com/gfx-rs/naga/blob/master/CHANGELOG.md#v011-2023-01-25 for smaller shader improvements.

#### Surface Capabilities API

The various surface capability functions were combined into a single call that gives you all the capabilities.

```diff
- let formats = surface.get_supported_formats(&adapter);
- let present_modes = surface.get_supported_present_modes(&adapter);
- let alpha_modes = surface.get_supported_alpha_modes(&adapter);
+ let caps = surface.get_capabilities(&adapter);
+ let formats = caps.formats;
+ let present_modes = caps.present_modes;
+ let alpha_modes = caps.alpha_modes;
```

Additionally `Surface::get_default_config` now returns an Option and returns None if the surface isn't supported by the adapter.

```diff
- let config = surface.get_default_config(&adapter);
+ let config = surface.get_default_config(&adapter).expect("Surface unsupported by adapter");
```

#### Fallible surface creation

`Instance::create_surface()` now returns `Result<Surface, CreateSurfaceError>` instead of `Surface`. This allows an error to be returned if the given window is a HTML canvas and obtaining a WebGPU or WebGL 2 context fails. (No other platforms currently report any errors through this path.) By @kpreid in [#3052](https://github.com/gfx-rs/wgpu/pull/3052/)

#### `Queue::copy_external_image_to_texture` on WebAssembly

A new api, `Queue::copy_external_image_to_texture`, allows you to create wgpu textures from various web image primitives. Specifically from `HtmlVideoElement`, `HtmlCanvasElement`, `OffscreenCanvas`, and `ImageBitmap`. This provides multiple low-copy ways of interacting with the browser. WebGL is also supported, though WebGL has some additional restrictions, represented by the `UNRESTRICTED_EXTERNAL_IMAGE_COPIES` downlevel flag. By @cwfitzgerald in [#3288](https://github.com/gfx-rs/wgpu/pull/3288)

#### Instance creation now takes `InstanceDescriptor` instead of `Backends`

`Instance::new()` and `hub::Global::new()` now take an `InstanceDescriptor` struct which contains both the existing `Backends` selection as well as a new `Dx12Compiler` field for selecting which Dx12 shader compiler to use.

```diff
- let instance = Instance::new(wgpu::Backends::all());
+ let instance = Instance::new(wgpu::InstanceDescriptor {
+     backends: wgpu::Backends::all(),
+     dx12_shader_compiler: wgpu::Dx12Compiler::Fxc,
+ });
```

`Instance` now also also implements `Default`, which uses `wgpu::Backends::all()` and `wgpu::Dx12Compiler::Fxc` for `InstanceDescriptor`

```diff
- let instance = Instance::new(wgpu::InstanceDescriptor {
-     backends: wgpu::Backends::all(),
-     dx12_shader_compiler: wgpu::Dx12Compiler::Fxc,
- });
+ let instance = Instance::default();
```

By @Elabajaba in [#3356](https://github.com/gfx-rs/wgpu/pull/3356)

#### Texture Format Reinterpretation

The new `view_formats` field in the `TextureDescriptor` is used to specify a list of formats the texture can be re-interpreted to in a texture view. Currently only changing srgb-ness is allowed (ex. `Rgba8Unorm` <=> `Rgba8UnormSrgb`).

```diff
let texture = device.create_texture(&wgpu::TextureDescriptor {
  // ...
  format: TextureFormat::Rgba8UnormSrgb,
+ view_formats: &[TextureFormat::Rgba8Unorm],
});
```

```diff
let config = wgpu::SurfaceConfiguration {
  // ...
  format: TextureFormat::Rgba8Unorm,
+ view_formats: vec![wgpu::TextureFormat::Rgba8UnormSrgb],
};
surface.configure(&device, &config);
```

#### MSAA x2 and x8 Support

Via the `TEXTURE_ADAPTER_SPECIFIC_FORMAT_FEATURES` feature, MSAA x2 and x8 are now supported on textures. To query for x2 or x8 support, enable the feature and look at the texture format flags for the texture format of your choice.

By @39ali in [3140](https://github.com/gfx-rs/wgpu/pull/3140)

#### DXC Shader Compiler Support for DX12

You can now choose to use the DXC compiler for DX12 instead of FXC. The DXC compiler is faster, less buggy, and allows for new features compared to the old, unmaintained FXC compiler.

You can choose which compiler to use at `Instance` creation using the `dx12_shader_compiler` field in the `InstanceDescriptor` struct. Note that DXC requires both `dxcompiler.dll` and `dxil.dll`, which can be downloaded from https://github.com/microsoft/DirectXShaderCompiler/releases. Both .dlls need to be shipped with your application when targeting DX12 and using the `DXC` compiler. If the .dlls can't be loaded, then it will fall back to the FXC compiler. By @39ali and @Elabajaba in [#3356](https://github.com/gfx-rs/wgpu/pull/3356)

#### Suballocate DX12 buffers and textures

The DX12 backend can now suballocate buffers and textures from larger chunks of memory, which can give a significant increase in performance (in testing a 100x improvement has been seen in a simple scene with 200 `write_buffer` calls per frame, and a 1.4x improvement in [Bistro using Bevy](https://github.com/vleue/bevy_bistro_playground)).

Previously `wgpu-hal`'s DX12 backend created a new heap on the GPU every time you called `write_buffer` (by calling `CreateCommittedResource`), whereas now it uses [`gpu_allocator`](https://crates.io/crates/gpu-allocator) to manage GPU memory (and calls `CreatePlacedResource` with a suballocated heap). By @Elabajaba in [#3163](https://github.com/gfx-rs/wgpu/pull/3163)

#### Backend selection by features in wgpu-core

Whereas `wgpu-core` used to automatically select backends to enable
based on the target OS and architecture, it now has separate features
to enable each backend:

- "metal", for the Metal API on macOS and iOS
- "vulkan", for the Vulkan API (Linux, some Android, and occasionally Windows)
- "dx12", for Microsoft's Direct3D 12 API
- "gles", OpenGL ES, available on many systems
- "dx11", for Microsoft's Direct3D 11 API

None are enabled by default, but the `wgpu` crate automatically
selects these features based on the target operating system and
architecture, using the same rules that `wgpu-core` used to, so users
of `wgpu` should be unaffected by this change. However, other crates
using `wgpu-core` directly will need to copy `wgpu`'s logic or write
their own. See the `[target]` section of `wgpu/Cargo.toml` for
details.

Similarly, `wgpu-core` now has `emscripten` and `renderdoc` features
that `wgpu` enables on appropriate platforms.

In previous releases, the `wgpu-core` crate decided which backends to
support. However, this left `wgpu-core`'s users with no way to
override those choices. (Firefox doesn't want the GLES back end, for
example.) There doesn't seem to be any way to have a crate select
backends based on target OS and architecture that users of that crate
can still override. Default features can't be selected based on the
target, for example. That implies that we should do the selection as
late in the dependency DAG as feasible. Having `wgpu` (and
`wgpu-core`'s other dependents) choose backends seems like the best
option.

By @jimblandy in [#3254](https://github.com/gfx-rs/wgpu/pull/3254).

### Changes

#### General

- Convert all `Default` Implementations on Enums to `derive(Default)`
- Implement `Default` for `CompositeAlphaMode`
- New downlevel feature `UNRESTRICTED_INDEX_BUFFER` to indicate support for using `INDEX` together with other non-copy/map usages (unsupported on WebGL). By @Wumpf in [#3157](https://github.com/gfx-rs/wgpu/pull/3157)
- Add missing `DEPTH_BIAS_CLAMP` and `FULL_DRAW_INDEX_UINT32` downlevel flags. By @teoxoy in [#3316](https://github.com/gfx-rs/wgpu/pull/3316)
- Combine `Surface::get_supported_formats`, `Surface::get_supported_present_modes`, and `Surface::get_supported_alpha_modes` into `Surface::get_capabilities` and `SurfaceCapabilities`. By @cwfitzgerald in [#3157](https://github.com/gfx-rs/wgpu/pull/3157)
- Make `Surface::get_default_config` return an Option to prevent panics. By @cwfitzgerald in [#3157](https://github.com/gfx-rs/wgpu/pull/3157)
- Lower the `max_buffer_size` limit value for compatibility with Apple2 and WebGPU compliance. By @jinleili in [#3255](https://github.com/gfx-rs/wgpu/pull/3255)
- Limits `min_uniform_buffer_offset_alignment` and `min_storage_buffer_offset_alignment` is now always at least 32. By @wumpf [#3262](https://github.com/gfx-rs/wgpu/pull/3262)
- Dereferencing a buffer view is now marked inline. By @Wumpf in [#3307](https://github.com/gfx-rs/wgpu/pull/3307)
- The `strict_assert` family of macros was moved to `wgpu-types`. By @i509VCB in [#3051](https://github.com/gfx-rs/wgpu/pull/3051)
- Make `ObjectId` structure and invariants idiomatic. By @teoxoy in [#3347](https://github.com/gfx-rs/wgpu/pull/3347)
- Add validation in accordance with WebGPU `GPUSamplerDescriptor` valid usage for `lodMinClamp` and `lodMaxClamp`. By @James2022-rgb in [#3353](https://github.com/gfx-rs/wgpu/pull/3353)
- Remove panics in `Deref` implementations for `QueueWriteBufferView` and `BufferViewMut`. Instead, warnings are logged, since reading from these types is not recommended. By @botahamec in [#3336]
- Implement `view_formats` in the TextureDescriptor to match the WebGPU spec. By @jinleili in [#3237](https://github.com/gfx-rs/wgpu/pull/3237)
- Show more information in error message for non-aligned buffer bindings in WebGL [#3414](https://github.com/gfx-rs/wgpu/pull/3414)
- Update `TextureView` validation according to the WebGPU spec. By @teoxoy in [#3410](https://github.com/gfx-rs/wgpu/pull/3410)
- Implement `view_formats` in the SurfaceConfiguration to match the WebGPU spec. By @jinleili in [#3409](https://github.com/gfx-rs/wgpu/pull/3409)

#### Vulkan

- Set `WEBGPU_TEXTURE_FORMAT_SUPPORT` downlevel flag depending on the proper format support by @teoxoy in [#3367](https://github.com/gfx-rs/wgpu/pull/3367).
- Set `COPY_SRC`/`COPY_DST` only based on Vulkan's `TRANSFER_SRC`/`TRANSFER_DST` by @teoxoy in [#3366](https://github.com/gfx-rs/wgpu/pull/3366).

#### GLES

- Browsers that support `OVR_multiview2` now report the `MULTIVIEW` feature by @expenses in [#3121](https://github.com/gfx-rs/wgpu/pull/3121).
- `Limits::max_push_constant_size` on GLES is now 256 by @Dinnerbone in [#3374](https://github.com/gfx-rs/wgpu/pull/3374).
- Creating multiple pipelines with the same shaders will now be faster, by @Dinnerbone in [#3380](https://github.com/gfx-rs/wgpu/pull/3380).

#### WebGPU

- Implement `queue_validate_write_buffer` by @jinleili in [#3098](https://github.com/gfx-rs/wgpu/pull/3098)
- Sync depth/stencil copy restrictions with the spec by @teoxoy in [#3314](https://github.com/gfx-rs/wgpu/pull/3314)

### Added/New Features

#### General

- Implement `Hash` for `DepthStencilState` and `DepthBiasState`
- Add the `"wgsl"` feature, to enable WGSL shaders in `wgpu-core` and `wgpu`. Enabled by default in `wgpu`. By @daxpedda in [#2890](https://github.com/gfx-rs/wgpu/pull/2890).
- Implement `Clone` for `ShaderSource` and `ShaderModuleDescriptor` in `wgpu`. By @daxpedda in [#3086](https://github.com/gfx-rs/wgpu/pull/3086).
- Add `get_default_config` for `Surface` to simplify user creation of `SurfaceConfiguration`. By @jinleili in [#3034](https://github.com/gfx-rs/wgpu/pull/3034)
- Improve compute shader validation error message. By @haraldreingruber in [#3139](https://github.com/gfx-rs/wgpu/pull/3139)
- Native adapters can now use MSAA x2 and x8 if it's supported , previously only x1 and x4 were supported . By @39ali in [3140](https://github.com/gfx-rs/wgpu/pull/3140)
- Implemented correleation between user timestamps and platform specific presentation timestamps via [`Adapter::get_presentation_timestamp`]. By @cwfitzgerald in [#3240](https://github.com/gfx-rs/wgpu/pull/3240)
- Added support for `Features::SHADER_PRIMITIVE_INDEX` on all backends. By @cwfitzgerald in [#3272](https://github.com/gfx-rs/wgpu/pull/3272)
- Implemented `TextureFormat::Stencil8`, allowing for stencil testing without depth components. By @Dinnerbone in [#3343](https://github.com/gfx-rs/wgpu/pull/3343)
- Implemented `add_srgb_suffix()` for `TextureFormat` for converting linear formats to sRGB. By @Elabajaba in [#3419](https://github.com/gfx-rs/wgpu/pull/3419)
- Zero-initialize workgroup memory. By @teoxoy in [#3174](https://github.com/gfx-rs/wgpu/pull/3174)

#### GLES

- Surfaces support now `TextureFormat::Rgba8Unorm` and (non-web only) `TextureFormat::Bgra8Unorm`. By @Wumpf in [#3070](https://github.com/gfx-rs/wgpu/pull/3070)
- Support alpha to coverage. By @Wumpf in [#3156](https://github.com/gfx-rs/wgpu/pull/3156)
- Support filtering f32 textures. By @expenses in [#3261](https://github.com/gfx-rs/wgpu/pull/3261)

#### Vulkan

- Add `SHADER_INT16` feature to enable the `shaderInt16` VkPhysicalDeviceFeature. By @Elabajaba in [#3401](https://github.com/gfx-rs/wgpu/pull/3401)

#### WebGPU

- Add `MULTISAMPLE_X2`, `MULTISAMPLE_X4` and `MULTISAMPLE_X8` to `TextureFormatFeatureFlags`. By @39ali in [3140](https://github.com/gfx-rs/wgpu/pull/3140)
- Sync `TextureFormat.describe` with the spec. By @teoxoy in [3312](https://github.com/gfx-rs/wgpu/pull/3312)

#### Metal

- Add a way to create `Device` and `Queue` from raw Metal resources in wgpu-hal. By @AdrianEddy in [#3338](https://github.com/gfx-rs/wgpu/pull/3338)

### Bug Fixes

#### General

- Update ndk-sys to v0.4.1+23.1.7779620, to fix checksum failures. By @jimblandy in [#3232](https://github.com/gfx-rs/wgpu/pull/3232).
- Bother to free the `hal::Api::CommandBuffer` when a `wgpu_core::command::CommandEncoder` is dropped. By @jimblandy in [#3069](https://github.com/gfx-rs/wgpu/pull/3069).
- Fixed the mipmap example by adding the missing WRITE_TIMESTAMP_INSIDE_PASSES feature. By @Olaroll in [#3081](https://github.com/gfx-rs/wgpu/pull/3081).
- Avoid panicking in some interactions with invalid resources by @nical in (#3094)[https://github.com/gfx-rs/wgpu/pull/3094]
- Fixed an integer overflow in `copy_texture_to_texture` by @nical [#3090](https://github.com/gfx-rs/wgpu/pull/3090)
- Remove `wgpu_types::Features::DEPTH24PLUS_STENCIL8`, making `wgpu::TextureFormat::Depth24PlusStencil8` available on all backends. By @Healthire in (#3151)[https://github.com/gfx-rs/wgpu/pull/3151]
- Fix an integer overflow in `queue_write_texture` by @nical in (#3146)[https://github.com/gfx-rs/wgpu/pull/3146]
- Make `RenderPassCompatibilityError` and `CreateShaderModuleError` not so huge. By @jimblandy in (#3226)[https://github.com/gfx-rs/wgpu/pull/3226]
- Check for invalid bitflag bits in wgpu-core and allow them to be captured/replayed by @nical in (#3229)[https://github.com/gfx-rs/wgpu/pull/3229]
- Evaluate `gfx_select!`'s `#[cfg]` conditions at the right time. By @jimblandy in [#3253](https://github.com/gfx-rs/wgpu/pull/3253)
- Improve error messages when binding bind group with dynamic offsets. By @cwfitzgerald in [#3294](https://github.com/gfx-rs/wgpu/pull/3294)
- Allow non-filtering sampling of integer textures. By @JMS55 in [#3362](https://github.com/gfx-rs/wgpu/pull/3362).
- Validate texture ids in `Global::queue_texture_write`. By @jimblandy in [#3378](https://github.com/gfx-rs/wgpu/pull/3378).
- Don't panic on mapped buffer in queue_submit. By @crowlKats in [#3364](https://github.com/gfx-rs/wgpu/pull/3364).
- Fix being able to sample a depth texture with a filtering sampler. By @teoxoy in [#3394](https://github.com/gfx-rs/wgpu/pull/3394).
- Make `make_spirv_raw` and `make_spirv` handle big-endian binaries. By @1e1001 in [#3411](https://github.com/gfx-rs/wgpu/pull/3411).

#### Vulkan

- Update ash to 0.37.1+1.3.235 to fix CI breaking by changing a call to the deprecated `debug_utils_set_object_name()` function to `set_debug_utils_object_name()` by @elabajaba in [#3273](https://github.com/gfx-rs/wgpu/pull/3273)
- Document and improve extension detection. By @teoxoy in [#3327](https://github.com/gfx-rs/wgpu/pull/3327)
- Don't use a pointer to a local copy of a `PhysicalDeviceDriverProperties` struct after it has gone out of scope. In fact, don't make a local copy at all. Introduce a helper function for building `CStr`s from C character arrays, and remove some `unsafe` blocks. By @jimblandy in [#3076](https://github.com/gfx-rs/wgpu/pull/3076).

#### DX12

- Fix `depth16Unorm` formats by @teoxoy in [#3313](https://github.com/gfx-rs/wgpu/pull/3313)
- Don't re-use `GraphicsCommandList` when `close` or `reset` fails. By @xiaopengli89 in [#3204](https://github.com/gfx-rs/wgpu/pull/3204)

#### Metal

- Fix texture view creation with full-resource views when using an explicit `mip_level_count` or `array_layer_count`. By @cwfitzgerald in [#3323](https://github.com/gfx-rs/wgpu/pull/3323)

#### GLES

- Fixed WebGL not displaying srgb targets correctly if a non-screen filling viewport was previously set. By @Wumpf in [#3093](https://github.com/gfx-rs/wgpu/pull/3093)
- Fix disallowing multisampling for float textures if otherwise supported. By @Wumpf in [#3183](https://github.com/gfx-rs/wgpu/pull/3183)
- Fix a panic when creating a pipeline with opaque types other than samplers (images and atomic counters). By @James2022-rgb in [#3361](https://github.com/gfx-rs/wgpu/pull/3361)
- Fix uniform buffers being empty on some vendors. By @Dinnerbone in [#3391](https://github.com/gfx-rs/wgpu/pull/3391)
- Fix a panic allocating a new buffer on webgl. By @Dinnerbone in [#3396](https://github.com/gfx-rs/wgpu/pull/3396)

#### WebGPU

- Use `log` instead of `println` in hello example by @JolifantoBambla in [#2858](https://github.com/gfx-rs/wgpu/pull/2858)

#### deno-webgpu

- Let `setVertexBuffer` and `setIndexBuffer` calls on
  `GPURenderBundleEncoder` throw an error if the `size` argument is
  zero, rather than treating that as "until the end of the buffer".
  By @jimblandy in [#3171](https://github.com/gfx-rs/wgpu/pull/3171)

#### Emscripten

- Let the wgpu examples `framework.rs` compile again under Emscripten. By @jimblandy in [#3246](https://github.com/gfx-rs/wgpu/pull/3246)

### Examples

- Log adapter info in hello example on wasm target by @JolifantoBambla in [#2858](https://github.com/gfx-rs/wgpu/pull/2858)
- Added new example `stencil-triangles` to show basic use of stencil testing. By @Dinnerbone in [#3343](https://github.com/gfx-rs/wgpu/pull/3343)

### Testing/Internal

- Update the `minimum supported rust version` to 1.64
- Move `ResourceMetadata` into its own module. By @jimblandy in [#3213](https://github.com/gfx-rs/wgpu/pull/3213)
- Add WebAssembly testing infrastructure. By @haraldreingruber in [#3238](https://github.com/gfx-rs/wgpu/pull/3238)
- Error message when you forget to use cargo-nextest. By @cwfitzgerald in [#3293](https://github.com/gfx-rs/wgpu/pull/3293)
- Fix all suggestions from `cargo clippy`

## wgpu-0.14.2 (2022-11-28)

### Bug Fixes

- Fix incorrect offset in `get_mapped_range` by @nical in [#3233](https://github.com/gfx-rs/wgpu/pull/3233)

## wgpu-0.14.1 (2022-11-02)

### Bug Fixes

- Make `wgpu::TextureFormat::Depth24PlusStencil8` available on all backends by making the feature unconditionally available and the feature unneeded to use the format. By @Healthire and @cwfitzgerald in [#3165](https://github.com/gfx-rs/wgpu/pull/3165)

## wgpu-0.14.0 (2022-10-05)

### Major Changes

#### @invariant Warning

When using CompareFunction::Equal or CompareFunction::NotEqual on a pipeline, there is now a warning logged if the vertex
shader does not have a @invariant tag on it. On some machines, rendering the same triangles multiple times without an
@invariant tag will result in slightly different depths for every pixel. Because the \*Equal functions rely on depth being
the same every time it is rendered, we now warn if it is missing.

```diff
-@vertex
-fn vert_main(v_in: VertexInput) -> @builtin(position) vec4<f32> {...}
+@vertex
+fn vert_main(v_in: VertexInput) -> @builtin(position) @invariant vec4<f32> {...}
```

#### Surface Alpha and PresentModes

Surface supports `alpha_mode` now. When alpha_mode is equal to `PreMultiplied` or `PostMultiplied`,
the alpha channel of framebuffer is respected in the compositing process, but which mode is available depends on
the different API and `Device`. If don't care about alpha_mode, you can set it to `Auto`.

```diff
SurfaceConfiguration {
// ...
+ alpha_mode: surface.get_supported_alpha_modes(&adapter)[0],
}
```

The function to enumerate supported presentation modes changed:

```diff
- pub fn wgpu::Surface::get_supported_modes(&self, adapter: &wgpu::Adapter) -> Vec<PresentMode>
+ pub fn wgpu::Surface::get_supported_present_modes(&self, adapter: &wgpu::Adapter) -> Vec<PresentMode>
```

#### Updated raw-window-handle to 0.5

This will allow use of the latest version of winit. As such the bound on create_surface is now RWH 0.5 and requires
both `raw_window_handle::HasRawWindowHandle` and `raw_window_handle::HasRawDisplayHandle`.

### Added/New Features

- Add `Buffer::size()` and `Buffer::usage()`; by @kpreid in [#2923](https://github.com/gfx-rs/wgpu/pull/2923)
- Split Blendability and Filterability into Two Different TextureFormatFeatureFlags; by @stakka in [#3012](https://github.com/gfx-rs/wgpu/pull/3012)
- Expose `alpha_mode` on SurfaceConfiguration, by @jinleili in [#2836](https://github.com/gfx-rs/wgpu/pull/2836)
- Introduce fields for driver name and info in `AdapterInfo`, by @i509VCB in [#3037](https://github.com/gfx-rs/wgpu/pull/3037)
- Add way to create gles hal textures from raw gl names to allow externally managed textures. By @i509VCB [#3046](https://github.com/gfx-rs/wgpu/pull/3046)
- Implemented `copy_external_image_to_texture` on WebGPU, by @ybiletskyi in [#2781](https://github.com/gfx-rs/wgpu/pull/2781)

### Bug Fixes

#### General

- Free `StagingBuffers` even when an error occurs in the operation that consumes them. By @jimblandy in [#2961](https://github.com/gfx-rs/wgpu/pull/2961)
- Avoid overflow when checking that texture copies fall within bounds. By @jimblandy in [#2963](https://github.com/gfx-rs/wgpu/pull/2963)
- Improve the validation and error reporting of buffer mappings by @nical in [#2848](https://github.com/gfx-rs/wgpu/pull/2848)
- Fix compilation errors when using wgpu-core in isolation while targeting `wasm32-unknown-unknown` by @Seamooo in [#2922](https://github.com/gfx-rs/wgpu/pull/2922)
- Fixed opening of RenderDoc library by @abuffseagull in [#2930](https://github.com/gfx-rs/wgpu/pull/2930)
- Added missing validation for `BufferUsages` mismatches when `Features::MAPPABLE_PRIMARY_BUFFERS` is not
  enabled. By @imberflur in [#3023](https://github.com/gfx-rs/wgpu/pull/3023)
- Fixed `CommandEncoder` not being `Send` and `Sync` on web by @i509VCB in [#3025](https://github.com/gfx-rs/wgpu/pull/3025)
- Document meaning of `vendor` in `AdapterInfo` if the vendor has no PCI id.
- Fix missing resource labels from some Errors by @scoopr in [#3066](https://github.com/gfx-rs/wgpu/pull/3066)

#### Metal

- Add the missing `msg_send![view, retain]` call within `from_view` by @jinleili in [#2976](https://github.com/gfx-rs/wgpu/pull/2976)
- Fix `max_buffer` `max_texture` and `max_vertex_buffers` limits by @jinleili in [#2978](https://github.com/gfx-rs/wgpu/pull/2978)
- Remove PrivateCapabilities's `format_rgb10a2_unorm_surface` field by @jinleili in [#2981](https://github.com/gfx-rs/wgpu/pull/2981)
- Fix validation error when copying into a subset of a single-layer texture by @nical in [#3063](https://github.com/gfx-rs/wgpu/pull/3063)
- Fix `_buffer_sizes` encoding by @dtiselice in [#3047](https://github.com/gfx-rs/wgpu/pull/3047)

#### Vulkan

- Fix `astc_hdr` formats support by @jinleili in [#2971]](https://github.com/gfx-rs/wgpu/pull/2971)
- Update to naga b209d911 (2022-9-1) to avoid generating SPIR-V that
  violates Vulkan valid usage rules `VUID-StandaloneSpirv-Flat-06202`
  and `VUID-StandaloneSpirv-Flat-04744`. By @jimblandy in
  [#3008](https://github.com/gfx-rs/wgpu/pull/3008)
- Fix bug where the Vulkan backend would panic when using a supported window and display handle but the
  dependent extensions are not available by @i509VCB in [#3054](https://github.com/gfx-rs/wgpu/pull/3054).

#### GLES

- Report vendor id for Mesa and Apple GPUs. By @i509VCB [#3036](https://github.com/gfx-rs/wgpu/pull/3036)
- Report Apple M2 gpu as integrated. By @i509VCB [#3036](https://github.com/gfx-rs/wgpu/pull/3036)

#### WebGPU

- When called in a web worker, `Context::init()` now uses `web_sys::WorkerGlobalContext` to create a `wgpu::Instance` instead of trying to access the unavailable `web_sys::Window` by @JolifantoBambla in [#2858](https://github.com/gfx-rs/wgpu/pull/2858)

### Changes

#### General

- Changed wgpu-hal and wgpu-core implementation to pass RawDisplayHandle and RawWindowHandle as separate
  parameters instead of passing an impl trait over both HasRawDisplayHandle and HasRawWindowHandle. By @i509VCB in [#3022](https://github.com/gfx-rs/wgpu/pull/3022)
- Changed `Instance::as_hal<A>` to just return an `Option<&A::Instance>` rather than taking a callback. By @jimb in [#2991](https://github.com/gfx-rs/wgpu/pull/2991)
- Added downlevel restriction error message for `InvalidFormatUsages` error by @Seamooo in [#2886](https://github.com/gfx-rs/wgpu/pull/2886)
- Add warning when using CompareFunction::\*Equal with vertex shader that is missing @invariant tag by @cwfitzgerald in [#2887](https://github.com/gfx-rs/wgpu/pull/2887)
- Update Winit to version 0.27 and raw-window-handle to 0.5 by @wyatt-herkamp in [#2918](https://github.com/gfx-rs/wgpu/pull/2918)
- Address Clippy 0.1.63 complaints. By @jimblandy in [#2977](https://github.com/gfx-rs/wgpu/pull/2977)
- Don't use `PhantomData` for `IdentityManager`'s `Input` type. By @jimblandy in [#2972](https://github.com/gfx-rs/wgpu/pull/2972)
- Changed naga variant in ShaderSource to `Cow<'static, Module>`, to allow loading global variables by @daxpedda in [#2903](https://github.com/gfx-rs/wgpu/pull/2903)
- Updated the maximum binding index to match the WebGPU specification by @nical in [#2957](https://github.com/gfx-rs/wgpu/pull/2957)
- Add `unsafe_op_in_unsafe_fn` to Clippy lints in the entire workspace. By @ErichDonGubler in [#3044](https://github.com/gfx-rs/wgpu/pull/3044).

#### Metal

- Extract the generic code into `get_metal_layer` by @jinleili in [#2826](https://github.com/gfx-rs/wgpu/pull/2826)

#### Vulkan

- Remove use of Vulkan12Features/Properties types. By @i509VCB in [#2936](https://github.com/gfx-rs/wgpu/pull/2936)
- Provide a means for `wgpu` users to access `vk::Queue` and the queue index. By @anlumo in [#2950](https://github.com/gfx-rs/wgpu/pull/2950)
- Use the use effective api version for determining device features instead of wrongly assuming `VkPhysicalDeviceProperties.apiVersion`
  is the actual version of the device. By @i509VCB in [#3011](https://github.com/gfx-rs/wgpu/pull/3011)
- `DropGuard` has been moved to the root of the wgpu-hal crate. By @i509VCB [#3046](https://github.com/gfx-rs/wgpu/pull/3046)

#### GLES

- Add `Rgba16Float` format support for color attachments. By @jinleili in [#3045](https://github.com/gfx-rs/wgpu/pull/3045)
- `TEXTURE_COMPRESSION_ASTC_HDR` feature detection by @jinleili in [#3042](https://github.com/gfx-rs/wgpu/pull/3042)

### Performance

- Made `StagingBelt::write_buffer()` check more thoroughly for reusable memory; by @kpreid in [#2906](https://github.com/gfx-rs/wgpu/pull/2906)

### Documentation

- Add WGSL examples to complement existing examples written in GLSL by @norepimorphism in [#2888](https://github.com/gfx-rs/wgpu/pull/2888)
- Document `wgpu_core` resource allocation. @jimblandy in [#2973](https://github.com/gfx-rs/wgpu/pull/2973)
- Expanded `StagingBelt` documentation by @kpreid in [#2905](https://github.com/gfx-rs/wgpu/pull/2905)
- Fixed documentation for `Instance::create_surface_from_canvas` and
  `Instance::create_surface_from_offscreen_canvas` regarding their
  safety contract. These functions are not unsafe. By @jimblandy [#2990](https://github.com/gfx-rs/wgpu/pull/2990)
- Document that `write_buffer_with()` is sound but unwise to read from by @kpreid in [#3006](https://github.com/gfx-rs/wgpu/pull/3006)
- Explain why `Adapter::as_hal` and `Device::as_hal` have to take callback functions. By @jimblandy in [#2992](https://github.com/gfx-rs/wgpu/pull/2992)

### Dependency Updates

#### WebGPU

- Update wasm32 dependencies, set `alpha_mode` on web target by @jinleili in [#3040](https://github.com/gfx-rs/wgpu/pull/3040)

### Build Configuration

- Add the `"strict_asserts"` feature, to enable additional internal
  run-time validation in `wgpu-core`. By @jimblandy in
  [#2872](https://github.com/gfx-rs/wgpu/pull/2872).

### Full API Diff

Manual concatenation of `cargo public-api --diff-git-checkouts v0.13.2 v0.14.0 -p wgpu` and `cargo public-api --diff-git-checkouts v0.13.2 v0.14.0 -p wgpu-types`

```diff
Removed items from the public API
=================================
-pub fn wgpu::Surface::get_supported_modes(&self, adapter: &wgpu::Adapter) -> Vec<PresentMode>
-pub const wgpu::Features::DEPTH24UNORM_STENCIL8: Self
-pub enum variant wgpu::TextureFormat::Depth24UnormStencil8

Changed items in the public API
===============================
-pub unsafe fn wgpu::Instance::as_hal<A: wgc::hub::HalApi, F: FnOnce(Option<&<A as >::Instance>) -> R, R>(&self, hal_instance_callback: F) -> R
+pub unsafe fn wgpu::Instance::as_hal<A: wgc::hub::HalApi>(&self) -> Option<&<A as >::Instance>
-pub unsafe fn wgpu::Instance::create_surface<W: raw_window_handle::HasRawWindowHandle>(&self, window: &W) -> wgpu::Surface
+pub unsafe fn wgpu::Instance::create_surface<W: raw_window_handle::HasRawWindowHandle + raw_window_handle::HasRawDisplayHandle>(&self, window: &W) -> wgpu::Surface

Added items to the public API
=============================
+pub fn wgpu::Buffer::size(&self) -> wgt::BufferAddress
+pub fn wgpu::Buffer::usage(&self) -> BufferUsages
+pub fn wgpu::Surface::get_supported_alpha_modes(&self, adapter: &wgpu::Adapter) -> Vec<CompositeAlphaMode>
+pub fn wgpu::Surface::get_supported_present_modes(&self, adapter: &wgpu::Adapter) -> Vec<PresentMode>
+#[repr(C)] pub enum wgpu::CompositeAlphaMode
+impl RefUnwindSafe for wgpu::CompositeAlphaMode
+impl Send for wgpu::CompositeAlphaMode
+impl Sync for wgpu::CompositeAlphaMode
+impl Unpin for wgpu::CompositeAlphaMode
+impl UnwindSafe for wgpu::CompositeAlphaMode
+pub const wgpu::Features::DEPTH24PLUS_STENCIL8: Self
+pub const wgpu::TextureFormatFeatureFlags::BLENDABLE: Self
+pub enum variant wgpu::CompositeAlphaMode::Auto = 0
+pub enum variant wgpu::CompositeAlphaMode::Inherit = 4
+pub enum variant wgpu::CompositeAlphaMode::Opaque = 1
+pub enum variant wgpu::CompositeAlphaMode::PostMultiplied = 3
+pub enum variant wgpu::CompositeAlphaMode::PreMultiplied = 2
+pub enum variant wgpu::TextureFormat::Depth16Unorm
+pub fn wgpu::CompositeAlphaMode::clone(&self) -> wgpu::CompositeAlphaMode
+pub fn wgpu::CompositeAlphaMode::eq(&self, other: &wgpu::CompositeAlphaMode) -> bool
+pub fn wgpu::CompositeAlphaMode::fmt(&self, f: &mut $crate::fmt::Formatter<'_>) -> $crate::fmt::Result
+pub fn wgpu::CompositeAlphaMode::hash<__H: $crate::hash::Hasher>(&self, state: &mut __H) -> ()
+pub struct field wgpu::AdapterInfo::driver: String
+pub struct field wgpu::AdapterInfo::driver_info: String
+pub struct field wgpu::SurfaceConfiguration::alpha_mode: wgpu_types::CompositeAlphaMode
```

## wgpu-0.13.2 (2022-07-13)

### Bug Fixes

#### General

- Prefer `DeviceType::DiscreteGpu` over `DeviceType::Other` for `PowerPreference::LowPower` so Vulkan is preferred over OpenGL again by @Craig-Macomber in [#2853](https://github.com/gfx-rs/wgpu/pull/2853)
- Allow running `get_texture_format_features` on unsupported texture formats (returning no flags) by @cwfitzgerald in [#2856](https://github.com/gfx-rs/wgpu/pull/2856)
- Allow multi-sampled textures that are supported by the device but not WebGPU if `TEXTURE_ADAPTER_SPECIFIC_FORMAT_FEATURES` is enabled by @cwfitzgerald in [#2856](https://github.com/gfx-rs/wgpu/pull/2856)
- `get_texture_format_features` only lists the COPY\_\* usages if the adapter actually supports that usage by @cwfitzgerald in [#2856](https://github.com/gfx-rs/wgpu/pull/2856)
- Fix bind group / pipeline deduplication not taking into account RenderBundle execution resetting these values by @shoebe [#2867](https://github.com/gfx-rs/wgpu/pull/2867)
- Fix panics that occur when using `as_hal` functions when the hal generic type does not match the hub being looked up in by @i509VCB [#2871](https://github.com/gfx-rs/wgpu/pull/2871)
- Add some validation in map_async by @nical in [#2876](https://github.com/gfx-rs/wgpu/pull/2876)
- Fix bugs when mapping/unmapping zero-sized buffers and ranges by @nical in [#2877](https://github.com/gfx-rs/wgpu/pull/2877)
- Fix out-of-bound write in `map_buffer` with non-zero offset by @nical in [#2916](https://github.com/gfx-rs/wgpu/pull/2916)
- Validate the number of color attachments in `create_render_pipeline` by @nical in [#2913](https://github.com/gfx-rs/wgpu/pull/2913)
- Validate against the maximum binding index in `create_bind_group_layout` by @nical in [#2892](https://github.com/gfx-rs/wgpu/pull/2892)
- Validate that map_async's range is not negative by @nical in [#2938](https://github.com/gfx-rs/wgpu/pull/2938)
- Fix calculation/validation of layer/mip ranges in create_texture_view by @nical in [#2955](https://github.com/gfx-rs/wgpu/pull/2955)
- Validate the sample count and mip level in `copy_texture_to_buffer` by @nical in [#2958](https://github.com/gfx-rs/wgpu/pull/2958)
- Expose the cause of the error in the `map_async` callback in [#2939](https://github.com/gfx-rs/wgpu/pull/2939)

#### DX12

- `DownlevelCapabilities::default()` now returns the `ANISOTROPIC_FILTERING` flag set to true so DX12 lists `ANISOTROPIC_FILTERING` as true again by @cwfitzgerald in [#2851](https://github.com/gfx-rs/wgpu/pull/2851)
- Properly query format features for UAV/SRV usages of depth formats by @cwfitzgerald in [#2856](https://github.com/gfx-rs/wgpu/pull/2856)

#### Vulkan

- Vulkan 1.0 drivers that support `VK_KHR_multiview` now properly report the `MULTIVIEW` feature as supported by @i509VCB in [#2934](https://github.com/gfx-rs/wgpu/pull/2934).
- Stop using `VkPhysicalDevice11Features` in Vulkan 1.1 which is confusingly provided in Vulkan 1.2 by @i509VCB in [#2934](https://github.com/gfx-rs/wgpu/pull/2934).

#### GLES

- Fix depth stencil texture format capability by @jinleili in [#2854](https://github.com/gfx-rs/wgpu/pull/2854)
- `get_texture_format_features` now only returns usages for formats it actually supports by @cwfitzgerald in [#2856](https://github.com/gfx-rs/wgpu/pull/2856)

#### Hal

- Allow access to queue family index in Vulkan hal by @i509VCB in [#2859](https://github.com/gfx-rs/wgpu/pull/2859)
- Allow access to the EGLDisplay and EGLContext pointer in Gles hal Adapter and Device by @i509VCB in [#2860](https://github.com/gfx-rs/wgpu/pull/2860)

### Documentation

- Update present_mode docs as most of them don't automatically fall back to Fifo anymore. by @Elabajaba in [#2855](https://github.com/gfx-rs/wgpu/pull/2855)

#### Hal

- Document safety requirements for `Adapter::from_external` in gles hal by @i509VCB in [#2863](https://github.com/gfx-rs/wgpu/pull/2863)
- Make `AdapterContext` a publicly accessible type in the gles hal by @i509VCB in [#2870](https://github.com/gfx-rs/wgpu/pull/2870)

## wgpu-0.13.1 (2022-07-02)

### Bug Fixes

#### General

- Fix out of bounds access when surface texture is written to by multiple command buffers by @cwfitzgerald in [#2843](https://github.com/gfx-rs/wgpu/pull/2843)

#### GLES

- AutoNoVSync now correctly falls back to Fifo by @simbleau in [#2842](https://github.com/gfx-rs/wgpu/pull/2842)
- Fix GL_EXT_color_buffer_float detection on native by @cwfitzgerald in [#2843](https://github.com/gfx-rs/wgpu/pull/2843)

## wgpu-0.13 (2022-06-30)

### Major Changes

#### WGSL Syntax

WGSL syntax has changed in a couple ways. The new syntax is easier to read and work with.

Attribute declarations are written differently:

```diff
- [[group(1), binding(0)]]
+ @group(1) @binding(0)
```

Stage declarations are now separate attributes rather than part of the `stage` attribute:

```diff
- [[stage(vertex)]]
+ @vertex
```

Structs now use `,` as field separator and no longer need semicolons after the declaration:

```diff
- struct MyStruct {
-     my_member: u32;
- };
+ struct MyStruct {
+     my_member: u32,
+ }
```

#### Surface API

The method of getting the preferred swapchain format has changed to allow viewing all formats supported by the surface.

```diff
- let format = surface.get_preferred_format(&adapter).unwrap();
+ let format = surface.get_supported_formats(&adapter)[0];
```

Presentation modes now need to match exactly what the surface supports. `FIFO` is _always_ supported,
but all other modes vary from API to API and `Device` to `Device`. To get a list of all supported modes,
call the following. The order does not indicate preference.

```rust
let modes = surface.get_supported_present_modes(&adapter);
```

#### Timestamp Queries

Timestamp queries are now restricted behind multiple features to allow implementation on TBDR (Tile-Based Deferred Rendering)
based GPUs, such as mobile devices and Apple's M chips.

`Features::TIMESTAMP_QUERIES` now allows for calling `write_timestamp` only on `CommandEncoder`s.

`Features::WRITE_TIMESTAMP_INSIDE_PASSES` is needed to call `write_timestamp` on `RenderPassEncoder`s or `ComputePassEncoder`s.

#### map_async

The function for mapping buffers no longer returns a future, and instead calls a callback when the buffer is mapped.

This aligns with the use of the API more clearly - you aren't supposed to block and wait on the future to resolve,
you are supposed to keep rendering and wait until the buffer maps on its own. Mapping and the flow of mapping
is an under-documented area that we hope to improve in the future.

```diff
- let future = buffer.slice(..).map_async(MapMode::Read);
+ buffer.slice(..).map_async(MapMode::Read, || {
+     // Called when buffer is mapped.
+ })
```

#### Submission Indexes

Calling `queue.submit` now returns an opaque submission index that can be used as an argument to
`device.poll` to say which submission to wait to complete.

### Other Breaking Changes

`Device::create_shader_module` now takes the shader descriptor by value:

```diff
- device.create_shader_module(&shader_module_descriptor)
+ device.create_shader_module(shader_module_descriptor)
```

Color attachments can be sparse, so they are now optional:

```diff
FragmentState {
-  targets: &[color_target_state]
+  targets: &[Some(color_target_state)]
  // ..
}
```

```diff
RenderPassDescriptor {
-  color_attachments: &[render_pass_color_attachment]
+  color_attachments: &[Some(render_pass_color_attachment)]
  // ..
}
```

```diff
RenderBundleEncoderDescriptor {
-  color_formats: &[texture_format]
+  color_formats: &[Some(texture_format)]
  // ..
}
```

`Extent3d::max_mips` now requires you to pass a TextureDimension to specify whether or not depth_or_array_layers should be ignored:

```diff
Extent3d {
  width: 1920,
  height: 1080,
  depth_or_array_layers: 6,
- }.max_mips()
+ }.max_mips(wgpu::TextureDimension::D3)
```

`Limits` has a new field, [`max_buffer_size`](https://docs.rs/wgpu/0.13.0/wgpu/struct.Limits.html#structfield.max_buffer_size) (not an issue if you don't define limits manually):

```diff
Limits {
  // ...
+ max_buffer_size: 256 * 1024 * 1024, // adjust as you see fit
}
```

`Features::CLEAR_COMMANDS` is now unnecessary and no longer exists. The feature to clear buffers and textures is now part of upstream WebGPU.

```diff
DeviceDescriptor {
  // ...
  features: wgpu::Features::VERTEX_WRITABLE_STORAGE
    | wgpu::Features::MAPPABLE_PRIMARY_BUFFERS
    | wgpu::Features::TEXTURE_BINDING_ARRAY
    | wgpu::Features::BUFFER_BINDING_ARRAY
    | wgpu::Features::STORAGE_RESOURCE_BINDING_ARRAY
-    | wgpu::Features::CLEAR_COMMANDS
  ,
}
```

`ComputePass::dispatch` has been renamed to `ComputePass::dispatch_workgroups`

```diff
- cpass.dispatch(self.work_group_count, 1, 1)
+ cpass.dispatch_workgroups(self.work_group_count, 1, 1)
```

### Added/New Features

#### General

- Add `util::indirect::*` helper structs by @IcanDivideBy0 in [#2365](https://github.com/gfx-rs/wgpu/pull/2365)
- Add `AddressMode::ClampToZero` by @laptou in [#2364](https://github.com/gfx-rs/wgpu/pull/2364)
- Add MULTISAMPLED_SHADING downlevel flag by @jinleili in [#2425](https://github.com/gfx-rs/wgpu/pull/2425)
- Allow non struct buffers in wgsl by @IcanDivideBy0 in [#2451](https://github.com/gfx-rs/wgpu/pull/2451)
- Prefix every wgpu-generated label with `(wgpu)`. by @kpreid in [#2590](https://github.com/gfx-rs/wgpu/pull/2590)
- Permit non-struct, non-array types as buffers. by @jimblandy in [#2584](https://github.com/gfx-rs/wgpu/pull/2584)
- Return `queue_empty` for Device::poll by @xiaopengli89 in [#2643](https://github.com/gfx-rs/wgpu/pull/2643)
- Add `SHADER_FLOAT16` feature by @jinleili in [#2646](https://github.com/gfx-rs/wgpu/pull/2646)
- Add DEPTH32FLOAT_STENCIL8 feature by @jinleili in [#2664](https://github.com/gfx-rs/wgpu/pull/2664)
- Add DEPTH24UNORM_STENCIL8 feature by @jinleili in [#2689](https://github.com/gfx-rs/wgpu/pull/2689)
- Implement submission indexes by @cwfitzgerald in [#2700](https://github.com/gfx-rs/wgpu/pull/2700)
- [WebGL] Add a downlevel capability for rendering to floating point textures by @expenses in [#2729](https://github.com/gfx-rs/wgpu/pull/2729)
- allow creating wgpu::Instance from wgpu_core::Instance by @i509VCB in [#2763](https://github.com/gfx-rs/wgpu/pull/2763)
- Force binding sizes to be multiples of 16 on webgl by @cwfitzgerald in [#2808](https://github.com/gfx-rs/wgpu/pull/2808)
- Add naga variant to ShaderSource by @rttad in [#2801](https://github.com/gfx-rs/wgpu/pull/2801)
- Implement Queue::write_buffer_with by @teoxoy in [#2777](https://github.com/gfx-rs/wgpu/pull/2777)

#### Vulkan

- Re-allow vk backend on Apple platforms via `vulkan-portability` feature by @jinleili in [#2488](https://github.com/gfx-rs/wgpu/pull/2488)
- vulkan: HDR ASTC formats support by @jinleili in [#2496](https://github.com/gfx-rs/wgpu/pull/2496)

#### Metal

- Implement push constants for metal backend by @TheOnlyMrCat in [#2314](https://github.com/gfx-rs/wgpu/pull/2314)
- Metal backend ASTC HDR formats support by @jinleili in [#2477](https://github.com/gfx-rs/wgpu/pull/2477)
- Add COPY_DST to Metal's surface usage bits by @vl4dimir in [#2491](https://github.com/gfx-rs/wgpu/pull/2491)
- Add `Features::MULTI_DRAW_INDIRECT` to Metal by @expenses in [#2737](https://github.com/gfx-rs/wgpu/pull/2737)

#### GLES

- Support externally initialized contexts by @kvark in [#2350](https://github.com/gfx-rs/wgpu/pull/2350)
- Angle support on macOS by @jinleili in [#2461](https://github.com/gfx-rs/wgpu/pull/2461)
- Use EGL surfaceless platform when windowing system is not found by @sh7dm in [#2339](https://github.com/gfx-rs/wgpu/pull/2339)
- Do a downlevel check for anisotrophy and enable it in the webgl backend by @expenses in [#2616](https://github.com/gfx-rs/wgpu/pull/2616)
- OffscreenCanvas Support for WebGL Backend by @haraldreingruber-dedalus in [#2603](https://github.com/gfx-rs/wgpu/pull/2603)

#### DX12

- Support to create surface from visual on Windows by @xiaopengli89 in [#2434](https://github.com/gfx-rs/wgpu/pull/2434)
- Add raw_queue for d3d12 device by @xiaopengli89 in [#2600](https://github.com/gfx-rs/wgpu/pull/2600)

#### DX11

- Skeleton of a DX11 backend - not working yet by @cwfitzgerald in [#2443](https://github.com/gfx-rs/wgpu/pull/2443)

#### Hal

- Adapter and Instance as_hal functions by @i509VCB in [#2663](https://github.com/gfx-rs/wgpu/pull/2663)
- expose some underlying types in Vulkan hal by @i509VCB in [#2667](https://github.com/gfx-rs/wgpu/pull/2667)
- Add raw_device method for dx12, vulkan hal by @xiaopengli89 in [#2360](https://github.com/gfx-rs/wgpu/pull/2360)
- expose egl display in gles Instance hal by @i509VCB in [#2670](https://github.com/gfx-rs/wgpu/pull/2670)
- Add raw_adapter method for dx12 hal adapter by @xiaopengli89 in [#2714](https://github.com/gfx-rs/wgpu/pull/2714)
- Acquire texture: `Option<std::time::Duration>` timeouts by @rib in [#2724](https://github.com/gfx-rs/wgpu/pull/2724)
- expose vulkan physical device capabilities, enabled device extensions by @i509VCB in [#2688](https://github.com/gfx-rs/wgpu/pull/2688)

#### Emscripten

- feature: emscripten by @caiiiycuk in [#2422](https://github.com/gfx-rs/wgpu/pull/2422)
- feature = emscripten, compatibility fixes for wgpu-native by @caiiiycuk in [#2450](https://github.com/gfx-rs/wgpu/pull/2450)

### Changes

#### General

- Make ShaderSource #[non_exhaustive] by @fintelia in [#2312](https://github.com/gfx-rs/wgpu/pull/2312)
- Make `execute_bundles()` receive IntoIterator by @maku693 in [#2410](https://github.com/gfx-rs/wgpu/pull/2410)
- Raise `wgpu_hal::MAX_COLOR_TARGETS` to 8. by @jimblandy in [#2640](https://github.com/gfx-rs/wgpu/pull/2640)
- Rename dispatch -> dispatch_workgroups by @jinleili in [#2619](https://github.com/gfx-rs/wgpu/pull/2619)
- Update texture_create_view logic to match spec by @jinleili in [#2621](https://github.com/gfx-rs/wgpu/pull/2621)
- Move TEXTURE_COMPRESSION_ETC2 | ASTC_LDR to web section to match spec by @jinleili in [#2671](https://github.com/gfx-rs/wgpu/pull/2671)
- Check that all vertex outputs are consumed by the fragment shader by @cwfitzgerald in [#2704](https://github.com/gfx-rs/wgpu/pull/2704)
- Convert map_async from being async to being callback based by @cwfitzgerald in [#2698](https://github.com/gfx-rs/wgpu/pull/2698)
- Align the validation of Device::create_texture with the WebGPU spec by @nical in [#2759](https://github.com/gfx-rs/wgpu/pull/2759)
- Add InvalidGroupIndex validation at create_shader_module by @jinleili in [#2775](https://github.com/gfx-rs/wgpu/pull/2775)
- Rename MAX_COLOR_TARGETS to MAX_COLOR_ATTACHMENTS to match spec by @jinleili in [#2780](https://github.com/gfx-rs/wgpu/pull/2780)
- Change get_preferred_format to get_supported_formats by @stevenhuyn in [#2783](https://github.com/gfx-rs/wgpu/pull/2783)
- Restrict WriteTimestamp Inside Passes by @cwfitzgerald in [#2802](https://github.com/gfx-rs/wgpu/pull/2802)
- Flip span labels to work better with tools by @cwfitzgerald in [#2820](https://github.com/gfx-rs/wgpu/pull/2820)

#### Gles

- Make GLES DeviceType unknown by default by @PolyMeilex in [#2647](https://github.com/gfx-rs/wgpu/pull/2647)

#### Metal

- metal: check if in the main thread when calling `create_surface` by @jinleili in [#2736](https://github.com/gfx-rs/wgpu/pull/2736)

#### Hal

- limit binding sizes to i32 by @kvark in [#2363](https://github.com/gfx-rs/wgpu/pull/2363)

### Bug Fixes

#### General

- Fix trac(y/ing) compile issue by @cwfitzgerald in [#2333](https://github.com/gfx-rs/wgpu/pull/2333)
- Improve detection and validation of cubemap views by @kvark in [#2331](https://github.com/gfx-rs/wgpu/pull/2331)
- Don't create array layer trackers for 3D textures. by @ElectronicRU in [#2348](https://github.com/gfx-rs/wgpu/pull/2348)
- Limit 1D texture mips to 1 by @kvark in [#2374](https://github.com/gfx-rs/wgpu/pull/2374)
- Texture format MSAA capabilities by @kvark in [#2377](https://github.com/gfx-rs/wgpu/pull/2377)
- Fix write_buffer to surface texture @kvark in [#2385](https://github.com/gfx-rs/wgpu/pull/2385)
- Improve some error messages by @cwfitzgerald in [#2446](https://github.com/gfx-rs/wgpu/pull/2446)
- Don't recycle indices that reach EOL by @kvark in [#2462](https://github.com/gfx-rs/wgpu/pull/2462)
- Validated render usages for 3D textures by @kvark in [#2482](https://github.com/gfx-rs/wgpu/pull/2482)
- Wrap all validation logs with catch_unwinds by @cwfitzgerald in [#2511](https://github.com/gfx-rs/wgpu/pull/2511)
- Fix clippy lints by @a1phyr in [#2560](https://github.com/gfx-rs/wgpu/pull/2560)
- Free the raw device when `wgpu::Device` is dropped. by @jimblandy in [#2567](https://github.com/gfx-rs/wgpu/pull/2567)
- wgpu-core: Register new pipelines with device's tracker. by @jimblandy in [#2565](https://github.com/gfx-rs/wgpu/pull/2565)
- impl Debug for StagingBelt by @kpreid in [#2572](https://github.com/gfx-rs/wgpu/pull/2572)
- Use fully qualified syntax for some calls. by @jimblandy in [#2655](https://github.com/gfx-rs/wgpu/pull/2655)
- fix: panic in `Storage::get` by @SparkyPotato in [#2657](https://github.com/gfx-rs/wgpu/pull/2657)
- Report invalid pipelines in render bundles as errors, not panics. by @jimblandy in [#2666](https://github.com/gfx-rs/wgpu/pull/2666)
- Perform "valid to use with" checks when recording render bundles. by @jimblandy in [#2690](https://github.com/gfx-rs/wgpu/pull/2690)
- Stop using storage usage for sampling by @cwfitzgerald in [#2703](https://github.com/gfx-rs/wgpu/pull/2703)
- Track depth and stencil writability separately. by @jimblandy in [#2693](https://github.com/gfx-rs/wgpu/pull/2693)
- Improve InvalidScissorRect error message by @jinleili in [#2713](https://github.com/gfx-rs/wgpu/pull/2713)
- Improve InvalidViewport error message by @jinleili in [#2723](https://github.com/gfx-rs/wgpu/pull/2723)
- Don't dirty the vertex buffer for stride/rate changes on bundles. by @jimblandy in [#2744](https://github.com/gfx-rs/wgpu/pull/2744)
- Clean up render bundle index buffer tracking. by @jimblandy in [#2743](https://github.com/gfx-rs/wgpu/pull/2743)
- Improve read-write and read-only texture storage error message by @jinleili in [#2745](https://github.com/gfx-rs/wgpu/pull/2745)
- Change `WEBGPU_TEXTURE_FORMAT_SUPPORT` to `1 << 14` instead of `1 << 15` by @expenses in [#2772](https://github.com/gfx-rs/wgpu/pull/2772)
- fix BufferMapCallbackC & SubmittedWorkDoneClosureC by @rajveermalviya in [#2787](https://github.com/gfx-rs/wgpu/pull/2787)
- Fix formatting of `TextureDimensionError::LimitExceeded`. by @kpreid in [#2799](https://github.com/gfx-rs/wgpu/pull/2799)
- Remove redundant `#[cfg]` conditions from `backend/direct.rs`. by @jimblandy in [#2811](https://github.com/gfx-rs/wgpu/pull/2811)
- Replace android-properties with android_system_properties. by @nical in [#2815](https://github.com/gfx-rs/wgpu/pull/2815)
- Relax render pass color_attachments validation by @jinleili in [#2778](https://github.com/gfx-rs/wgpu/pull/2778)
- Properly Barrier Compute Indirect Buffers by @cwfitzgerald in [#2810](https://github.com/gfx-rs/wgpu/pull/2810)
- Use numeric constants to define `wgpu_types::Features` values. by @jimblandy in [#2817](https://github.com/gfx-rs/wgpu/pull/2817)

#### Metal

- Fix surface texture clear view by @kvark in [#2341](https://github.com/gfx-rs/wgpu/pull/2341)
- Set preserveInvariance for shader options by @scoopr in [#2372](https://github.com/gfx-rs/wgpu/pull/2372)
- Properly set msl version to 2.3 if supported by @cwfitzgerald in [#2418](https://github.com/gfx-rs/wgpu/pull/2418)
- Identify Apple M1 GPU as integrated by @superdump in [#2429](https://github.com/gfx-rs/wgpu/pull/2429)
- Fix M1 in macOS incorrectly reports supported compressed texture formats by @superdump in [#2453](https://github.com/gfx-rs/wgpu/pull/2453)
- Msl: support unsized array not in structures by @kvark in [#2459](https://github.com/gfx-rs/wgpu/pull/2459)
- Fix `Surface::from_uiview` can not guarantee set correct `contentScaleFactor` by @jinleili in [#2470](https://github.com/gfx-rs/wgpu/pull/2470)
- Set `max_buffer_size` by the correct physical device restriction by @jinleili in [#2502](https://github.com/gfx-rs/wgpu/pull/2502)
- Refactor `PrivateCapabilities` creation by @jinleili in [#2509](https://github.com/gfx-rs/wgpu/pull/2509)
- Refactor texture_format_capabilities function by @jinleili in [#2522](https://github.com/gfx-rs/wgpu/pull/2522)
- Improve `push | pop_debug_marker` by @jinleili in [#2537](https://github.com/gfx-rs/wgpu/pull/2537)
- Fix some supported limits by @jinleili in [#2608](https://github.com/gfx-rs/wgpu/pull/2608)
- Don't skip incomplete binding resources. by @dragostis in [#2622](https://github.com/gfx-rs/wgpu/pull/2622)
- Fix `Rgb9e5Ufloat` capabilities and `sampler_lod_average` support by @jinleili in [#2656](https://github.com/gfx-rs/wgpu/pull/2656)
- Fix Depth24Plus | Depth24PlusStencil8 capabilities by @jinleili in [#2686](https://github.com/gfx-rs/wgpu/pull/2686)
- Get_supported_formats: sort like the old get_preferred_format and simplify return type by @victorvde in [#2786](https://github.com/gfx-rs/wgpu/pull/2786)
- Restrict hal::TextureUses::COLOR_TARGET condition within create_texture by @jinleili in [#2818](https://github.com/gfx-rs/wgpu/pull/2818)

#### DX12

- Fix UMA check by @kvark in [#2305](https://github.com/gfx-rs/wgpu/pull/2305)
- Fix partial texture barrier not affecting stencil aspect by @Wumpf in [#2308](https://github.com/gfx-rs/wgpu/pull/2308)
- Improve RowPitch computation by @kvark in [#2409](https://github.com/gfx-rs/wgpu/pull/2409)

#### Vulkan

- Explicitly set Vulkan debug message types instead of !empty() by @victorvde in [#2321](https://github.com/gfx-rs/wgpu/pull/2321)
- Use stencil read/write masks by @kvark in [#2382](https://github.com/gfx-rs/wgpu/pull/2382)
- Vulkan: correctly set INDEPENDENT_BLEND，make runnable on Android 8.x by @jinleili in [#2498](https://github.com/gfx-rs/wgpu/pull/2498)
- Fix ASTC format mapping by @kvark in [#2476](https://github.com/gfx-rs/wgpu/pull/2476)
- Support flipped Y on VK 1.1 devices by @cwfitzgerald in [#2512](https://github.com/gfx-rs/wgpu/pull/2512)
- Fixed builtin(primitive_index) for vulkan backend by @kwillemsen in [#2716](https://github.com/gfx-rs/wgpu/pull/2716)
- Fix PIPELINE_STATISTICS_QUERY feature support by @jinleili in [#2750](https://github.com/gfx-rs/wgpu/pull/2750)
- Add a vulkan workaround for large buffers. by @nical in [#2796](https://github.com/gfx-rs/wgpu/pull/2796)

#### GLES

- Fix index buffer state not being reset in reset_state by @rparrett in [#2391](https://github.com/gfx-rs/wgpu/pull/2391)
- Allow push constants trough emulation by @JCapucho in [#2400](https://github.com/gfx-rs/wgpu/pull/2400)
- Hal/gles: fix dirty vertex buffers that are unused by @kvark in [#2427](https://github.com/gfx-rs/wgpu/pull/2427)
- Fix texture description for bgra formats by @JCapucho in [#2520](https://github.com/gfx-rs/wgpu/pull/2520)
- Remove a `log::error!` debugging statement from the gles queue by @expenses in [#2630](https://github.com/gfx-rs/wgpu/pull/2630)
- Fix clearing depth and stencil at the same time by @expenses in [#2675](https://github.com/gfx-rs/wgpu/pull/2675)
- Handle cubemap copies by @expenses in [#2725](https://github.com/gfx-rs/wgpu/pull/2725)
- Allow clearing index buffers by @grovesNL in [#2740](https://github.com/gfx-rs/wgpu/pull/2740)
- Fix buffer-texture copy for 2d arrays by @tuchs in [#2809](https://github.com/gfx-rs/wgpu/pull/2809)

#### Wayland

- Search for different versions of libwayland by @sh7dm in [#2336](https://github.com/gfx-rs/wgpu/pull/2336)

#### WebGPU

- Fix compilation on wasm32-unknown-unknown without `webgl` feature by @jakobhellermann in [#2355](https://github.com/gfx-rs/wgpu/pull/2355)
- Solve crash on WebGPU by @cwfitzgerald in [#2807](https://github.com/gfx-rs/wgpu/pull/2807)

#### Emscripten

- Fix emscripten by @cwfitzgerald in [#2494](https://github.com/gfx-rs/wgpu/pull/2494)

### Performance

- Do texture init via clear passes when possible by @Wumpf in [#2307](https://github.com/gfx-rs/wgpu/pull/2307)
- Bind group deduplication by @cwfitzgerald in [#2623](https://github.com/gfx-rs/wgpu/pull/2623)
- Tracking Optimization and Rewrite by @cwfitzgerald in [#2662](https://github.com/gfx-rs/wgpu/pull/2662)

### Documentation

- Add defaults to new limits and correct older ones by @MultisampledNight in [#/2303](https://github.com/gfx-rs/wgpu/pull/2303)
- Improve shader source documentation by @grovesNL in [#2315](https://github.com/gfx-rs/wgpu/pull/2315)
- Fix typo by @rustui in [#2393](https://github.com/gfx-rs/wgpu/pull/2393)
- Add a :star: to the feature matrix of examples README by @yutannihilation in [#2457](https://github.com/gfx-rs/wgpu/pull/2457)
- Fix get_timestamp_period type in docs by @superdump in [#2478](https://github.com/gfx-rs/wgpu/pull/2478)
- Fix mistake in Access doc comment by @nical in [#2479](https://github.com/gfx-rs/wgpu/pull/2479)
- Improve shader support documentation by @cwfitzgerald in [#2501](https://github.com/gfx-rs/wgpu/pull/2501)
- Document the gfx_select! macro. by @jimblandy in [#2555](https://github.com/gfx-rs/wgpu/pull/2555)
- Add Windows 11 to section about DX12 by @HeavyRain266 in [#2552](https://github.com/gfx-rs/wgpu/pull/2552)
- Document some aspects of resource tracking. by @jimblandy in [#2558](https://github.com/gfx-rs/wgpu/pull/2558)
- Documentation for various things. by @jimblandy in [#2566](https://github.com/gfx-rs/wgpu/pull/2566)
- Fix doc links. by @jimblandy in [#2579](https://github.com/gfx-rs/wgpu/pull/2579)
- Fixed misspelling in documentation by @zenitopires in [#2634](https://github.com/gfx-rs/wgpu/pull/2634)
- Update push constant docs to reflect the API by @Noxime in [#2637](https://github.com/gfx-rs/wgpu/pull/2637)
- Exclude dependencies from documentation by @yutannihilation in [#2642](https://github.com/gfx-rs/wgpu/pull/2642)
- Document `GpuFuture`. by @jimblandy in [#2644](https://github.com/gfx-rs/wgpu/pull/2644)
- Document random bits and pieces. by @jimblandy in [#2651](https://github.com/gfx-rs/wgpu/pull/2651)
- Add cross-references to each wgpu type's documentation. by @kpreid in [#2653](https://github.com/gfx-rs/wgpu/pull/2653)
- RenderPassDescriptor: make label lifetime match doc, and make names descriptive. by @kpreid in [#2654](https://github.com/gfx-rs/wgpu/pull/2654)
- Document `VertexStepMode`. by @jimblandy in [#2685](https://github.com/gfx-rs/wgpu/pull/2685)
- Add links for SpirV documents. by @huandzh in [#2697](https://github.com/gfx-rs/wgpu/pull/2697)
- Add symlink LICENSE files into crates. by @dskkato in [#2604](https://github.com/gfx-rs/wgpu/pull/2604)
- Fix documentation links. by @jimblandy in [#2756](https://github.com/gfx-rs/wgpu/pull/2756)
- Improve push constant documentation, including internal docs. by @jimblandy in [#2764](https://github.com/gfx-rs/wgpu/pull/2764)
- Clarify docs for `wgpu_core`'s `Id` and `gfx_select!`. by @jimblandy in [#2766](https://github.com/gfx-rs/wgpu/pull/2766)
- Update the Supported Platforms table in README by @jinleili in [#2770](https://github.com/gfx-rs/wgpu/pull/2770)
- Remove depth image from readme - we don't dictate direction of depth by @cwfitzgerald in [#2812](https://github.com/gfx-rs/wgpu/pull/2812)

### Dependency Updates

- Update `ash` to `0.37` by @a1phyr in [#2557](https://github.com/gfx-rs/wgpu/pull/2557)
- Update parking_lot to 0.12. by @emilio in [#2639](https://github.com/gfx-rs/wgpu/pull/2639)
- Accept both parking-lot 0.11 and 0.12, to avoid windows-rs. by @jimblandy in [#2660](https://github.com/gfx-rs/wgpu/pull/2660)
- Update web-sys to 0.3.58, sparse attachments support by @jinleili in [#2813](https://github.com/gfx-rs/wgpu/pull/2813)
- Remove use of inplace_it by @mockersf in [#2889](https://github.com/gfx-rs/wgpu/pull/2889)

### deno-webgpu

- Clean up features in deno by @crowlKats in [#2445](https://github.com/gfx-rs/wgpu/pull/2445)
- Dont panic when submitting same commandbuffer multiple times by @crowlKats in [#2449](https://github.com/gfx-rs/wgpu/pull/2449)
- Handle error sources to display full errors by @crowlKats in [#2454](https://github.com/gfx-rs/wgpu/pull/2454)
- Pull changes from deno repo by @crowlKats in [#2455](https://github.com/gfx-rs/wgpu/pull/2455)
- Fix cts_runner by @crowlKats in [#2456](https://github.com/gfx-rs/wgpu/pull/2456)
- Update deno_webgpu by @crowlKats in [#2539](https://github.com/gfx-rs/wgpu/pull/2539)
- Custom op arity by @crowlKats in [#2542](https://github.com/gfx-rs/wgpu/pull/2542)

### Examples

- Fix conserative-raster low res target getting zero sized on resize by @Wumpf in [#2318](https://github.com/gfx-rs/wgpu/pull/2318)
- Replace run-wasm-example.sh with aliased rust crate (xtask) by @rukai in [#2346](https://github.com/gfx-rs/wgpu/pull/2346)
- Get cargo-run-wasm from crates.io by @rukai in [#2415](https://github.com/gfx-rs/wgpu/pull/2415)
- Fix msaa-line example's unnecessary MSAA data store by @jinleili in [#2421](https://github.com/gfx-rs/wgpu/pull/2421)
- Make shadow example runnable on iOS Android devices by @jinleili in [#2433](https://github.com/gfx-rs/wgpu/pull/2433)
- Blit should only draw one triangle by @CurryPseudo in [#2474](https://github.com/gfx-rs/wgpu/pull/2474)
- Fix wasm examples failing to compile by @Liamolucko in [#2524](https://github.com/gfx-rs/wgpu/pull/2524)
- Fix incorrect filtering used in mipmap generation by @LaylBongers in [#2525](https://github.com/gfx-rs/wgpu/pull/2525)
- Correct program output ("Steps", not "Times") by @skierpage in [#2535](https://github.com/gfx-rs/wgpu/pull/2535)
- Fix resizing behaviour of hello-triangle example by @FrankenApps in [#2543](https://github.com/gfx-rs/wgpu/pull/2543)
- Switch from `cgmath` to `glam` in examples by @a1phyr in [#2544](https://github.com/gfx-rs/wgpu/pull/2544)
- Generate 1x1 mip level by @davidar in [#2551](https://github.com/gfx-rs/wgpu/pull/2551)
- Wgpu/examples/shadow: Don't run on llvmpipe. by @jimblandy in [#2595](https://github.com/gfx-rs/wgpu/pull/2595)
- Avoid new WGSL reserved words in wgpu examples. by @jimblandy in [#2606](https://github.com/gfx-rs/wgpu/pull/2606)
- Move texture-array example over to wgsl by @cwfitzgerald in [#2618](https://github.com/gfx-rs/wgpu/pull/2618)
- Remove the default features from wgpu-info by @jinleili in [#2753](https://github.com/gfx-rs/wgpu/pull/2753)
- Fix bunnymark test screenshot and replace rand with nanorand by @stevenhuyn in [#2746](https://github.com/gfx-rs/wgpu/pull/2746)
- Use FIFO swapchain in examples by @cwfitzgerald in [#2790](https://github.com/gfx-rs/wgpu/pull/2790)

### Testing/Internal

- Test WebGPU backend with extra features by @kvark in [#2362](https://github.com/gfx-rs/wgpu/pull/2362)
- Lint deno_webgpu & wgpu-core by @AaronO in [#2403](https://github.com/gfx-rs/wgpu/pull/2403)
- IdentityManager: `from_index` method is unneeded. by @jimblandy in [#2424](https://github.com/gfx-rs/wgpu/pull/2424)
- Added id32 feature by @caiiiycuk in [#2464](https://github.com/gfx-rs/wgpu/pull/2464)
- Update dev deps by @rukai in [#2493](https://github.com/gfx-rs/wgpu/pull/2493)
- Use cargo nextest for running our tests by @cwfitzgerald in [#2495](https://github.com/gfx-rs/wgpu/pull/2495)
- Many Steps Towards GL Testing Working by @cwfitzgerald in [#2504](https://github.com/gfx-rs/wgpu/pull/2504)
- Rename ci.txt to ci.yml by @simon446 in [#2510](https://github.com/gfx-rs/wgpu/pull/2510)
- Re-enable GL testing in CI by @cwfitzgerald in [#2508](https://github.com/gfx-rs/wgpu/pull/2508)
- Expect shadow example to pass on GL by @kvark in [#2541](https://github.com/gfx-rs/wgpu/pull/2541)
- Simplify implementation of RefCount and MultiRefCount. by @jimblandy in [#2548](https://github.com/gfx-rs/wgpu/pull/2548)
- Provide a proper `new` method for `RefCount`. by @jimblandy in [#2570](https://github.com/gfx-rs/wgpu/pull/2570)
- Add logging to LifetimeTracker::triage_suspected. by @jimblandy in [#2569](https://github.com/gfx-rs/wgpu/pull/2569)
- wgpu-hal: Work around cbindgen bug: ignore `gles::egl` module. by @jimblandy in [#2576](https://github.com/gfx-rs/wgpu/pull/2576)
- Specify an exact wasm-bindgen-cli version in publish.yml. by @jimblandy in [#2624](https://github.com/gfx-rs/wgpu/pull/2624)
- Rename `timeout_us` to `timeout_ns`, to match actual units. by @jimblandy in [#2645](https://github.com/gfx-rs/wgpu/pull/2645)
- Move set_index_buffer FFI functions back into wgpu. by @jimblandy in [#2661](https://github.com/gfx-rs/wgpu/pull/2661)
- New function: `Global::create_buffer_error`. by @jimblandy in [#2673](https://github.com/gfx-rs/wgpu/pull/2673)
- Actually use RenderBundleEncoder::set_bind_group in tests. by @jimblandy in [#2678](https://github.com/gfx-rs/wgpu/pull/2678)
- Eliminate wgpu_core::commands::bundle::State::raw_dynamic_offsets. by @jimblandy in [#2684](https://github.com/gfx-rs/wgpu/pull/2684)
- Move RenderBundleEncoder::finish's pipeline layout id into the state. by @jimblandy in [#2755](https://github.com/gfx-rs/wgpu/pull/2755)
- Expect shader_primitive_index tests to fail on AMD RADV POLARIS12. by @jimblandy in [#2754](https://github.com/gfx-rs/wgpu/pull/2754)
- Introduce `VertexStep`: a stride and a step mode. by @jimblandy in [#2768](https://github.com/gfx-rs/wgpu/pull/2768)
- Increase max_outliers on wgpu water example reftest. by @jimblandy in [#2767](https://github.com/gfx-rs/wgpu/pull/2767)
- wgpu_core::command::bundle: Consolidate pipeline and vertex state. by @jimblandy in [#2769](https://github.com/gfx-rs/wgpu/pull/2769)
- Add type annotation to render pass code, for rust-analyzer. by @jimblandy in [#2773](https://github.com/gfx-rs/wgpu/pull/2773)
- Expose naga span location helpers by @nical in [#2752](https://github.com/gfx-rs/wgpu/pull/2752)
- Add create_texture_error by @nical in [#2800](https://github.com/gfx-rs/wgpu/pull/2800)

## wgpu-hal 0.12.5 (2022-04-19)

- fix crashes when logging in debug message callbacks
- fix program termination when dx12 or gles error messages happen.
- implement validation canary
- DX12:
  - Ignore erroneous validation error from DXGI debug layer.

## wgpu-hal-0.12.4 (2022-01-24)

- Metal:
  - check for MSL-2.3

## wgpu-hal-0.12.3, deno-webgpu-? (2022-01-20)

- Metal:
  - preserve vertex invariance
- Vulkan
  - fix stencil read/write masks
- Gles:
  - reset index binding properly
- DX12:
  - fix copies into 1D textures

## wgpu-core-0.12.2, wgpu-hal-0.12.2 (2022-01-10)

- fix tracy compile error
- fix buffer binding limits beyond 2Gb
- fix zero initialization of 3D textures
- Metal:
  - fix surface texture views
- Gles:
  - extend `libwayland` search paths

## wgpu-core-0.12.1, wgpu-hal-0.12.1 (2021-12-29)

- zero initialization uses now render target clears when possible (faster and doesn't enforce COPY_DST internally if not necessary)
  - fix use of MSAA targets in WebGL
  - fix not providing `COPY_DST` flag for textures causing assertions in some cases
  - fix surface textures not getting zero initialized
  - clear_texture supports now depth/stencil targets
- error message on creating depth/stencil volume texture
- Vulkan:
  - fix validation error on debug message types
- DX12:
  - fix check for integrated GPUs
  - fix stencil subresource transitions
- Metal:
  - implement push constants

## wgpu-0.12 (2021-12-18)

- API:
  - `MULTIVIEW` feature
  - `DEPTH_CLIP_CONTROL` feature to replace the old `DEPTH_CLAMP`
  - `TEXTURE_FORMAT_16BIT_NORM` feature
  - push/pop error scopes on the device
  - more limits for compute shaders
  - `SamplerBindingType` instead of booleans
  - sampler arrays are supported by `TEXTURE_BINDING_ARRAY` feature
  - "glsl" cargo feature for accepting GLSL shader code
  - enforced MSRV-1.53
- correctness:
  - textures are zero-initialized
  - lots and lots of fixes
- validation:
  - match texture-sampler pairs
  - check `min_binding_size` late at draw
  - check formats to match in `copy_texture_to_texture`
  - allow `strip_index_format` to be none if unused
  - check workgroup sizes and counts
- shaders:
  - please refer to [naga-0.8 changelog](https://github.com/gfx-rs/naga/pull/1610/files)
  - nice error messages

### wgpu-core-0.11.3, wgpu-hal-0.11.5, wgpu-0.11.1 (2021-12-01)

- Core:
  - validate device descriptor before actually creating it
  - fix validation of texture-sampler pairs
- Vulkan:
  - fix running on Vulkan-1.1 instance
  - improve detection of workaround for Intel+Nvidia on Linux
  - fix resource limits on Vulkan-1.2
  - fix the check for storage buffer requirement
  - change internal semaphore logic to work around Linux+Intel bugs
  - fix enabling extension-provided features
- GLES:
  - fix running on old and bogus drivers
  - fix stale samplers on bindings change
  - fix integer textures
  - fix querying work group parameters
  - fix stale PBO bindings caused by resource copies
  - fix rendering to cubemap faces
  - fix `Rgba16Float` format
  - fix stale vertex attributes when changing the pipeline
- Metal:
  - fix window resizing for running in multiple processes
- Web:
  - fix `set_index_buffer` and `set_vertex_buffer` to have optional sizes

### wgpu-core-0.11.2, wgpu-hal-0.11.4 (2021-10-22)

- fix buffer transition barriers
- Metal:
  - disable RW buffers on macOS 10.11
  - fix memory leaks in render pass descriptor
- WebGL:
  - fix surface reconfiguration
- GLES:
  - fix mapping when persistent mapping isn't supported
  - allow presentation in Android emulator
  - fix sRGB attributes on EGL-1.4 contexts

### wgpu-hal-0.11.3 (2021-10-16)

- GL:
  - fix mapping flags and buffer initialization
  - fix context creation when sRGB is available

### wgpu-core-0.11.1 (2021-10-15)

- fix bind group layout lifetime with regard to bind groups

### wgpu-hal-0.11.2 (2021-10-12)

- GL/WebGL: fix vertex buffer bindings with non-zero first instance
- DX12: fix cube array view construction

### wgpu-hal-0.11.1 (2021-10-09)

- Vulkan: fix NV optimus detection on Linux
- GL:
  - fix indirect dispatch buffers
- WebGL:
  - fix querying storage-related limits
  - work around a browser bug in the clear shader

## wgpu-0.11 (2021-10-07)

- Infrastructure:
  - Deno WebGPU plugin is a part of the repository
  - WebGPU CTS is ran on CI via Deno
- API:
  - initial WebGL support
  - `SwapchainFrame` is removed. `SurfaceTexture::present()` needs to be called instead of dropping.
  - better SPIR-V control flow processing
  - ability to request a software (fallback) adapter
  - new limits for `min_uniform_buffer_offset_alignment` and `min_storage_buffer_offset_alignment`
  - features:
    - new `PARTIALLY_BOUND_BINDING_ARRAY`
    - `NON_FILL_POLYGON_MODE` is split into `POLYGON_MODE_LINE` and `POLYGON_MODE_POINT`
- fixes:
  - many shader-related fixes in naga-0.7
  - fix a panic in resource cleanup happening when they are dropped on another thread
  - Vulkan:
    - create SPIR-V per entry point to work around driver bugs
    - expose higher descriptor limits based on descriptor indexing capabilities
  - GL and Vulkan:
    - Fix renderdoc device pointers
- optimization:
  - on Vulkan, bounds checks are omitted if the platform can do them natively

### wgpu-core-0.10.4, wgpu-0.10.2 (2021-09-23)

- fix `write_texture` for array textures
- fix closing an encoder on validation error
- expose Metal surface creation
- panic with an actual error message in the default handler

### wgpu-hal-0.10.7 (2021-09-14)

- Metal:
  - fix stencil back-face state
  - fix the limit on command buffer count

### wgpu-hal-0.10.6 (2021-09-12)

- Metal:
  - fix stencil operations
  - fix memory leak on M1 when out of focus
  - fix depth clamping checks
  - fix unsized storage buffers beyond the first

### wgpu-core-0.10.3, wgpu-hal-0.10.4 (2021-09-08)

- Vulkan:
  - fix read access barriers for writable storage buffers
  - fix shaders using cube array textures
  - work around Linux Intel+Nvidia driver conflicts
  - work around Adreno bug with `OpName`
- DX12:
  - fix storage binding offsets
- Metal:
  - fix compressed texture copies

### wgpu-core-0.10.2, wgpu-hal-0.10.3 (2021-09-01)

- All:
  - fix querying the size of storage textures
- Vulkan:
  - use render pass labels
- Metal:
  - fix moving the surface between displays
- DX12:
  - enable BC compressed textures
- GL:
  - fix vertex-buffer and storage related limits

### wgpu-core-0.10.1, wgpu-hal-0.10.2 (2021-08-24)

- All:
  - expose more formats via adapter-specific feature
  - fix creation of depth+stencil views
  - validate cube textures to not be used as storage
  - fix mip level count check for storage textures
- Metal:
  - fix usage of work group memory
- DX12:
  - critical fix of pipeline layout

## v0.10 (2021-08-18)

- Infrastructure:
  - `gfx-hal` is replaced by the in-house graphics abstraction `wgpu-hal`. Backends: Vulkan, Metal, D3D-12, and OpenGL ES-3.
  - examples are tested automatically for image snapshots.
- API:
  - `cross` feature is removed entirely. Only Rust code from now on.
  - processing SPIR-V inputs for later translation now requires `spirv` compile feature enabled
  - new `Features::SPIRV_SHADER_PASSTHROUGH` run-time feature allows providing pass-through SPIR-V (orthogonal to the compile feature)
  - several bitflag names are renamed to plural: `TextureUsage`, `BufferUsage`, `ColorWrite`.
  - the `SwapChain` is merged into `Surface`. Returned frames are `Texture` instead of `TextureView`.
  - renamed `TextureUsage` bits: `SAMPLED` -> `TEXTURE_BINDING`, `STORAGE` -> `STORAGE_BINDING`.
  - renamed `InputStepMode` to `VertexStepMode`.
  - readable storage textures are no longer a part of the base API. Only exposed via format-specific features, non-portably.
  - implemented `Rgb9e5Ufloat` format.
  - added limits for binding sizes, vertex data, per-stage bindings, and others.
  - reworked downlevel flags, added downlevel limits.
  - `resolver = "2"` is now required in top-level cargo manifests
- Fixed:
  - `Device::create_query_set` would return an error when creating exactly `QUERY_SET_MAX_QUERIES` (8192) queries. Now it only returns an error when trying to create _more_ than `QUERY_SET_MAX_QUERIES` queries.

### wgpu-core-0.9.2

- fix `Features::TEXTURE_SPECIFIC_FORMAT_FEATURES` not being supported for rendertargets

### wgpu-core-0.9.1 (2021-07-13)

- fix buffer inits delayed by a frame
- fix query resolves to initialize buffers
- fix pipeline statistics stride
- fix the check for maximum query count

## v0.9 (2021-06-18)

- Updated:
  - naga to `v0.5`.
- Added:
  - `Features::VERTEX_WRITABLE_STORAGE`.
  - `Features::CLEAR_COMMANDS` which allows you to use `cmd_buf.clear_texture` and `cmd_buf.clear_buffer`.
- Changed:
  - Updated default storage buffer/image limit to `8` from `4`.
- Fixed:
  - `Buffer::get_mapped_range` can now have a range of zero.
  - Fixed output spirv requiring the "kernel" capability.
  - Fixed segfault due to improper drop order.
  - Fixed incorrect dynamic stencil reference for Replace ops.
  - Fixed tracking of temporary resources.
  - Stopped unconditionally adding cubemap flags when the backend doesn't support cubemaps.
- Validation:
  - Ensure that if resources are viewed from the vertex stage, they are read only unless `Features::VERTEX_WRITABLE_STORAGE` is true.
  - Ensure storage class (i.e. storage vs uniform) is consistent between the shader and the pipeline layout.
  - Error when a color texture is used as a depth/stencil texture.
  - Check that pipeline output formats are logical
  - Added shader label to log messages if validation fails.
- Tracing:
  - Make renderpasses show up in the trace before they are run.
- Docs:
  - Fix typo in `PowerPreference::LowPower` description.
- Player:
  - Automatically start and stop RenderDoc captures.
- Examples:
  - Handle winit's unconditional exception.
- Internal:
  - Merged wgpu-rs and wgpu back into a single repository.
  - The tracker was split into two different stateful/stateless trackers to reduce overhead.
  - Added code coverage testing
  - CI can now test on lavapipe
  - Add missing extern "C" in wgpu-core on `wgpu_render_pass_execute_bundles`
  - Fix incorrect function name `wgpu_render_pass_bundle_indexed_indirect` to `wgpu_render_bundle_draw_indexed_indirect`.

### wgpu-types-0.8.1 (2021-06-08)

- fix dynamic stencil reference for Replace ops

### v0.8.1 (2021-05-06)

- fix SPIR-V generation from WGSL, which was broken due to "Kernel" capability
- validate buffer storage classes
- Added support for storage texture arrays for Vulkan and Metal.

## v0.8 (2021-04-29)

- naga is used by default to translate shaders, SPIRV-Cross is optional behind `cross` feature
- Features:
  - buffers are zero-initialized
  - downlevel limits for DX11/OpenGL support
  - conservative rasterization (native-only)
  - buffer resource indexing (native-only)
- API adjustments to the spec:
  - Renamed `RenderPassColorAttachmentDescriptor` to `RenderPassColorAttachment`:
    - Renamed the `attachment` member to `view`
  - Renamed `RenderPassDepthStencilAttachmentDescriptor` to `RenderPassDepthStencilAttachment`:
    - Renamed the `attachment` member to `view`
  - Renamed `VertexFormat` values
    - Examples: `Float3` -> `Float32x3`, `Ushort2` -> `Uint16x2`
  - Renamed the `depth` value of `Extent3d` to `depth_or_array_layers`
  - Updated blending options in `ColorTargetState`:
    - Renamed `BlendState` to `BlendComponent`
    - Added `BlendState` struct to hold color and alpha blend state
    - Moved `color_blend` and `alpha_blend` members into `blend` member
  - Moved `clamp_depth` from `RastizerState` to `PrimitiveState`
  - Updated `PrimitiveState`:
    - Added `conservative` member for enabling conservative rasterization
  - Updated copy view structs:
    - Renamed `TextureCopyView` to `ImageCopyTexture`
    - Renamed `TextureDataLayout` to `ImageDataLayout`
    - Changed `bytes_per_row` and `rows_per_image` members of `ImageDataLayout` from `u32` to `Option<NonZeroU32>` <!-- wgpu-rs only -->
  - Changed `BindingResource::Binding` from containing fields directly to containing a `BufferBinding`
  - Added `BindingResource::BufferArray`
- Infrastructure:
  - switch from `tracing` to `profiling`
  - more concrete and detailed errors
  - API traces include the command that crashed/panicked
  - Vulkan Portability support is removed from Apple platforms
- Validation:
  - texture bindings
  - filtering of textures by samplers
  - interpolation qualifiers
  - allow vertex components to be underspecified

### wgpu-core-0.7.1 (2021-02-25)

- expose `wgc::device::queue` sub-module in public
- fix the indexed buffer check
- fix command allocator race condition

## v0.7 (2021-01-31)

- Major API changes:
  - `RenderPipelineDescriptor`
  - `BindingType`
  - new `ShaderModuleDescriptor`
  - new `RenderEncoder`
- Features:
  - (beta) WGSL support, including the ability to bypass SPIR-V entirely
  - (beta) implicit bind group layout support
  - better error messages
  - timestamp and pipeline statistics queries
  - ETC2 and ASTC compressed textures
  - (beta) targeting Wasm with WebGL backend
  - reduced dependencies
  - Native-only:
    - clamp-to-border addressing
    - polygon fill modes
    - query a format for extra capabilities
    - `f64` support in shaders
- Validation:
  - shader interface
  - render pipeline descriptor
  - vertex buffers

### wgpu-0.6.2 (2020-11-24)

- don't panic in the staging belt if the channel is dropped

## v0.6 (2020-08-17)

- Crates:
  - C API is moved to [another repository](https://github.com/gfx-rs/wgpu-native)
  - `player`: standalone API replayer and tester
- Features:
  - Proper error handling with all functions returning `Result`
  - Graceful handling of "error" objects
  - API tracing [infrastructure](http://kvark.github.io/wgpu/debug/test/ron/2020/07/18/wgpu-api-tracing.html)
  - uploading data with `write_buffer`/`write_texture` queue operations
  - reusable render bundles
  - read-only depth/stencil attachments
  - bind group layout deduplication
  - Cows, cows everywhere
  - Web+Native features:
    - Depth clamping (feature)
    - BC texture compression
  - Native-only features:
    - mappable primary buffers
    - texture array bindings
    - push constants
    - multi-draw indirect
- Validation:
  - all transfer operations
  - all resource creation
  - bind group matching to the layout
  - experimental shader interface matching with naga

### wgpu-core-0.5.6 (2020-07-09)

- add debug markers support

### wgpu-core-0.5.5 (2020-05-20)

- fix destruction of adapters, swap chains, and bind group layouts
- fix command pool leak with temporary threads
- improve assertion messages
- implement `From<TextureFormat>` for `TextureComponentType`

### wgpu-core-0.5.4 (2020-04-24)

- fix memory management of staging buffers

### wgpu-core-0.5.3 (2020-04-18)

- fix reading access to storage textures
- another fix to layout transitions for swapchain images

### wgpu-core-0.5.2 (2020-04-15)

- fix read-only storage flags
- fix pipeline layout life time
- improve various assert messages

### wgpu-core-0.5.1 (2020-04-10)

- fix tracking of swapchain images that are used multiple times in a command buffer
- fix tracking of initial usage of a resource across a command buffer

## v0.5 (2020-04-06)

- Crates:
  - `wgpu-types`: common types between native and web targets
  - `wgpu-core`: internal API for the native and remote wrappers
- Features:
  - based on gfx-hal-0.5
  - moved from Rendy to the new `gfx-memory` and `gfx-descriptor` crates
  - passes are now recorded on the client side. The user is also responsible to keep all resources referenced in the pass up until it ends recording.
  - coordinate system is changed to have Y up in the rendering space
  - revised GPU lifetime tracking of all resources
  - revised usage tracking logic
  - all IDs are now non-zero
  - Mailbox present mode
- Validation:
  - active pipeline
- Fixes:
  - lots of small API changes to closely match upstream WebGPU
  - true read-only storage bindings
  - unmapping dropped buffers
  - better error messages on misused swapchain frames

### wgpu-core-0.4.3 (2020-01-20)

- improved swap chain error handling

### wgpu-core-0.4.2 (2019-12-15)

- fixed render pass transitions

### wgpu-core-0.4.1 (2019-11-28)

- fixed depth/stencil transitions
- fixed dynamic offset iteration

## v0.4 (2019-11-03)

- Platforms: removed OpenGL/WebGL support temporarily
- Features:
  - based on gfx-hal-0.4 with the new swapchain model
  - exposing adapters from all available backends on a system
  - tracking of samplers
  - cube map support with an example
- Validation:
  - buffer and texture usage

### wgpu-core-0.3.3 (2019-08-22)

- fixed instance creation on Windows

### wgpu-core-0.3.1 (2019-08-21)

- fixed pipeline barriers that aren't transitions

## v0.3 (2019-08-21)

- Platforms: experimental OpenGL/WebGL
- Crates:
  - Rust API is moved out to [another repository](https://github.com/gfx-rs/wgpu-rs)
- Features:
  - based on gfx-hal-0.3 with help of `rendy-memory` and `rendy-descriptor`
  - type-system-assisted deadlock prevention (for locking internal structures)
  - texture sub-resource tracking
  - `raw-window-handle` integration instead of `winit`
  - multisampling with an example
  - indirect draws and dispatches
  - stencil masks and reference values
  - native "compute" example
  - everything implements `Debug`
- Validation
  - vertex/index/instance ranges at draw calls
  - bing groups vs their expected layouts
  - bind group buffer ranges
  - required stencil reference, blend color

### wgpu-core-0.2.6 (2019-04-04)

- fixed frame acquisition GPU waits

### wgpu-core-0.2.5 (2019-03-31)

- fixed submission tracking
- added support for blend colors
- fixed bind group compatibility at the gfx-hal level
- validating the bind groups and blend colors

### wgpu-core-0.2.3 (2019-03-20)

- fixed vertex format mapping
- fixed building with "empty" backend on Windows
- bumped the default descriptor pool size
- fixed host mapping alignments
- validating the uniform buffer offset

## v0.2 (2019-03-06)

- Platforms: iOS/Metal, D3D11
- Crates:
  - `wgpu-remote`: remoting layer for the cross-process boundary
  - `gfx-examples`: selected gfx pre-ll examples ported over
- Features:
  - native example for compute
  - "gfx-cube" and "gfx-shadow" examples
  - copies between buffers and textures
  - separate object identity for the remote client
  - texture view tracking
  - native swapchain resize support
  - buffer mapping
  - object index epochs
  - comprehensive list of vertex and texture formats
  - validation of pipeline compatibility with the pass
- Fixes
  - fixed resource destruction

## v0.1 (2019-01-24)

- Platforms: Linux/Vulkan, Windows/Vulkan, D3D12, macOS/Metal
- Crates:
  - `wgpu-native`: C API implementation of WebGPU, based on gfx-hal
  - `wgpu-bindings`: auto-generated C headers
  - `wgpu`: idiomatic Rust wrapper
  - `examples`: native C examples
- Features:
- native examples for triangle rendering
- basic native swapchain integration
- concept of the storage hub
- basic recording of passes and command buffers
- submission-based lifetime tracking and command buffer recycling
- automatic resource transitions