Fix dof and background motion vectors on webgpu#23629
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alice-i-cecile merged 5 commits intobevyengine:mainfrom Apr 28, 2026
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Fix dof and background motion vectors on webgpu#23629alice-i-cecile merged 5 commits intobevyengine:mainfrom
alice-i-cecile merged 5 commits intobevyengine:mainfrom
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I ran the two mentioned examples using bevy run --example {skybox,depth_of_field} -Fwebgpu,free_camera web under Google Chrome Version 147.0.7727.116 (Official Build) (64-bit) on Linux/X11 with the webgpu options enabled.
They work!
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Eep, this consistently generates
@ 127.0.0.1:4000/build/skybox.js:3678
ERROR crates/bevy_render/src/error_handler.rs:114 Caught rendering error: Color target has no corresponding fragment stage output but writeMask (ColorWriteMask::(Red|Green|Blue|Alpha)) is not zero. - While validating targets[0] framebuffer output. - While validating fragment state. - While calling [Device].CreateRenderPipeline([RenderPipelineDescriptor ""background_motion_vectors_pipeline""]).
127.0.0.1:4000/:1 Color target has no corresponding fragment stage output but writeMask (ColorWriteMask::(Red|Green|Blue|Alpha)) is not zero.
- While validating targets[0] framebuffer output.
- While validating fragment state.
- While calling [Device].CreateRenderPipeline([RenderPipelineDescriptor ""background_motion_vectors_pipeline""]).
via bevy run --example skybox -Fwebgpu,free_camera web
(depth_of_field does work though)
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# Objective WebGPU-only fix extracted from bevyengine#22554 and bevyengine#22555. Fixes bevyengine#20459 ## Solution Fix normal + motion vector prepass by setting write mask to empty. This is a firefox/wgpu bug that it's not validated gfx-rs/wgpu#9147, but chromium does. Fix dof with bokeh mode. I guess it's `naga_oil` bug but I'm not sure. ## Testing I tested dof and skybox examples on web.
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Objective
WebGPU-only fix extracted from #22554 and #22555. Fixes #20459
Solution
Fix normal + motion vector prepass by setting write mask to empty. This is a firefox/wgpu bug that it's not validated gfx-rs/wgpu#9147, but chromium does.
Fix dof with bokeh mode. I guess it's
naga_oilbug but I'm not sure.Testing
I tested dof and skybox examples on web.