Hi Team, just wondering what the current state of WebGPU support is? Should I log bugs for it? for example videos don’t seem to be supported. Is there a list of todos somewhere so I can set expectations?
Thanks as always
Please see the list of issues at the end of the description here:
opened 02:58PM - 04 Feb 22 UTC
feature request
area: graphics
This is the root ticket of WebGPU Implementation, and will be updated regularly … to keep it up to date with new issues to work on and the work done.
For live preview, visit the url on up to date Chrome: https://playcanvas.github.io/
https://user-images.githubusercontent.com/59932779/203333981-3d77fc58-5e5a-4b00-add1-8ab5a3991c84.mov
https://user-images.githubusercontent.com/59932779/205290862-22eff1fd-53d9-4336-815e-5f7311b923d5.mov
https://user-images.githubusercontent.com/59932779/205290893-555888b4-74d2-4b6d-a963-1e0a86daea12.mov
https://user-images.githubusercontent.com/59932779/208122279-d85d1c22-48b3-4db8-b9d8-9872d111c739.mov
https://user-images.githubusercontent.com/59932779/205909226-d3d90aa0-c118-49f7-be0e-b56576a5235c.mov
https://user-images.githubusercontent.com/59932779/213508864-71ba2fb6-7c59-425e-bc3d-db94c2cd6e65.mov
https://user-images.githubusercontent.com/59932779/214621963-bc1b6bd5-8775-40f7-a339-6612b59fd5c2.mov
https://user-images.githubusercontent.com/59932779/217569603-95fc0dbd-d86f-4ccd-badf-42f9873ab3a7.mov
https://user-images.githubusercontent.com/59932779/222208562-efa32552-9da7-4a3d-a27f-f67fc1e91812.mov
https://github.com/playcanvas/engine/assets/59932779/b56291dc-513f-49f6-bcbc-50b0a24ec3cc
**Class layout overview**
- graphics folder will have two subfolders created for respective implementations: `/webgl`, `/webgpu`
- existing `GraphicsDevice` class will be platform independent, and `WebglGraphicsDevice` and `WebgpuGraphicsDevice` will extend it to implement platform specific implementations.
- other graphic classes, such as VertexBuffer, IndexBuffer and similar will be split into 3 classes as well, and this is the example structure:
```
// base platform independent class
class VertexBuffer {
impl = null; // platform dependent implementation (WebglVertexBuffer or WebgpuVertexBuffer)
};
```
**Refactorings**
The engine will undergo extensive refactoring, to more natively and with better performance support WebGPU API.
Issues:
- General
#4261
#2254
#4281
#4271
#5689
#5688
#5357
#5690
#2974
#5692
PRs:
- General
#3982
#4009
#4010
#4014
#4013
#4086
#4127
#5150
#5083
- Uniform buffer / bind group support:
#4156
#4258
#4387
#4394
#4402
#4410
#4497
#4568
#4575
#5438
- Render Passes
#4272
#4317
#4328
- WebGPU implementation
#4534
#4818
#4872
#4989
#5050
#5118
#5275
#5319
#5336
#5485
#5490
- Compute shaders
#5757
#5760
### Partial list of missing features:
- rendering to cube-map render target (both color and depth) does not support multisampling, and might be upside down, related to https://github.com/playcanvas/engine/pull/4911
- morphing supports only partially works, there seems to be an issue with the IDs vertex buffer)
- async texture readback is missing https://github.com/playcanvas/engine/issues/2974
- picker is not working, requires the async texture feedback
- video playback is not implemented https://github.com/playcanvas/engine/issues/5691
- particle system is not currently supported
- clustered lighting omni shadows seem to now work (used to)
- Lightmapper is disabled as it has issues
For anything else, please create an issue (even for all those we should have an issue)
1 Like
WebGPU is looking great, well done to the team. Its still some ways from me being able to use it (videos, and a bunch of shader errors in certain scenes, ios Safari, async readback) but early tests show a significant improvement to performance so we’re very much looking forward to it!
Hi @Adrian_Meredith - thanks for the feedback.Yeah videos and particles (working on this now) and async readback are still on the list, but should not be for long.