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Fixed in 6000.0.21f1
Votes
1
Found in
6000.0.13f1
7000.0.0a1
Issue ID
UUM-77338
Regression
No
[WebGPU] 32bit floating point RenderTexture blending is not working when built for WebGPU
Reproduction steps:
1. Open the attached “WebGPUFloatingPointBlendBug” project
2. Open the “Assets/Scenes/SampleScene” scene
3. Enter the Play mode
4. Observe the color of the square in the Game view
5. Build and Run for Web
6. Observe the color of the square
Expected Result: The square in WebGPU looks the same as it does in the Play mode
Actual Result: The square in WebGPU is missing the blue hue and looks different from the one in the Play mode
Reproducible with: 6000.0.13f1
Could not test with: 2021.3.41f1, 2022.3.40f1 (WebGPU support was added in 2023.3)
Reproducible on: Windows 11 Pro
Not reproducible on: No other environments tested
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Resolution Note (fix version 6000.0.21f1):
The issue is in our WebGPU implementation. We had a flag enabling blending for 32 bit floating point Render Textures, but blending is actually not enabled in the WebGPU spec for 32 bit floating point Render Textures. So the output image is correct since blending will not work, but our SystemInfo was reporting incorrect texture info. This should be now corrected and the SystemInfo should correctly report that 32 bit floating point RenderTextures are not blendable.