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Relax render pass color_attachments validation #2778

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merged 6 commits into from
Jun 27, 2022

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jinleili
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#2469

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  1. We need to make the color attachments Option-al in render pipelines, render passes, and render bundles

I tried Option-al all of these, but that makes the code changes look not so good.
Since &[] can express None, is it still necessary to use Option?

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The rename looks good - could we split that out into its own PR?

However, the WebIDL and the spec language make it clear that colorAttachments can be an array with holes, like [x, null, y], so it really does need to be an Cow<'a, [Option<RenderPassColorAttachment>]> to match the spec.

wgpu-core/src/command/render.rs Outdated Show resolved Hide resolved
@jinleili jinleili force-pushed the color-attachment branch 2 times, most recently from 1f2d807 to 823bd0a Compare June 25, 2022 12:06
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jinleili commented Jun 25, 2022

Tested color_attachments: [Some], [Some, None], [None, Some], [Some, None, Some] on metal, dx12, vulkan backends, wasm target and gl backend only support non-hole attachments currently.

Since a new version of the aligned WebGPU spec web-sys was recently released, sparse attachments support must be placed after the web-sys upgrade.

TypeError: GPUDevice.createRenderPipeline: Missing required 'format' member of GPUColorTargetState.
    __wbg_createRenderPipeline_9112d655cc89bd45 http://localhost:8000/skybox2.js:599

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Thank you so much for undertaking this! That turned out to be a massive change.

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This looks great - thank you!

The only thing that still concerns me is the handling of rtv_pool. Based on discussion in Matrix, I think we can avoid having to share rtv_pool altogether, by allocating the null handle we need earlier, and just passing it in to command buffer creation. See this comment.

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superb

@jimblandy jimblandy merged commit 61796b1 into gfx-rs:master Jun 27, 2022
@jinleili jinleili deleted the color-attachment branch June 27, 2022 23:17
crowlKats added a commit to crowlKats/wgpu that referenced this pull request Jul 20, 2022
cwfitzgerald pushed a commit that referenced this pull request Jul 20, 2022
* upstream GPUAutoLayoutMode

* clean up symbols and fix miscalled op

* fix #2778
@crowlKats crowlKats mentioned this pull request Jul 21, 2022
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2 participants