Wgpu

In this release the API is aligned with the latest webgpu.idl, and
we updated to the latest release of wgpu-native (v0.14.2.3).

Changed:

* To use the default `min_binding_size` in `create_bind_group_layout`, it should be `None` instead of zero.
* If the depth-stencil texture has not room for stencil data, the `stencil_read_mask` and `stencil_write_mask` fields in the `DepthStencilState` struct passed to `create_render_pipeline()` must be set to 0.
* In WGSL, `stage(compute)` must now be `compute`. Same for `vertex` and `fragment`.
* In WGSL, the list of reserved words has been extended, including e.g. `mod`, `matrix` and `ref`.
* In WGSL, `smoothStep` is now `smoothstep`.

Added:

* New IDL: texture has new props `weight`, `height`, `depth_or_array_layers`.
* New IDL: Buffer has new prop `map_state`.

Fixed:

* The offscreen canvas's mainloop prevents leaking callbacks better (322)
* Prevent error messages when Qt examples/apps are closed (326)

Fixed:

* Prevent Qt warning about setting dpi awareness (320)
* Make canvases close when they get deleted (319)
* Fix qt canvas in ipython (315)
* Make offscreen canvas closable (309)
* Fix that the offscreen canvas had it size hardcoded, ignoring the given size (317)
* Fixed renaming of `queue` in docs (308)
* Fix using `.draw_frame` on qt canvas (304)
* Add missing dev dependencies (295)

Added:

* A shadertoy utility, plus examples (312)

Changed:

* Improve the error prompt when wgsl code is multi line error (311, 316)
* Tests: execute examples in the test process (310)
* Package only the release binary (not the debug build) (299)
* Codegen: uses in-memory file system during code generation (303)
* Improve readme (290, 302, 314)

Fixed:

* Fixed imports for PyQt6.
* Keyboard events work again for Qt 6.3.
* Fixed that overloading ``handle_event()`` did not work for a canvas based on a Qt or wx main widget/window.

Added:

* Can now add a wildcard ("*") to ``add_event_handler`` to handle all events.
* Shader error messages show more context, making shader debugging much easier.
* VSync can now be turned off to raise the frame rate when needed. Note that FPS measurements are still a poor performance benchmark!

Changed:

* GLFW canvas does not draw when minimized anymore.
* The offscreen and Jupyter canvas now use the srgb format for consistency with normal canvases.
* The examples have been adjusted for srgb colors.

- 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.

- 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