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area: correctnessWe're behaving incorrectlyWe're behaving incorrectlybackend: dx12Issues with DX12 or DXGIIssues with DX12 or DXGIbackend: glesIssues with GLES or WebGLIssues with GLES or WebGLbackend: metalIssues with MetalIssues with Metalbackend: vulkanIssues with VulkanIssues with Vulkan
Description
Description
See #8653 and the CI for it.
Related: #8594
A bunch of texture formats report that they support multisampling but not being a render attachment, which doesn't make sense and you aren't allowed to actually create a texture of this kind. The following is a list I found in the CI with these issues:
Rgb9e5Ufloaton Vulkan (llvmpipe)
Metal (local):
Nonsensical capabilities: the following formats support multisampling but not being render attachments: [
R16Unorm,
R16Snorm,
Rg16Unorm,
Rg16Snorm,
Rgba16Unorm,
Rgba16Snorm,
]
Additionally, GLES on llvmpipe on CI runs into the following, suggesting that features are misreported:
Creating texture with format R32Float and caps TextureFormatFeatures { allowed_usages: TextureUsages(COPY_SRC | COPY_DST | TEXTURE_BINDING | RENDER_ATTACHMENT), flags: TextureFormatFeatureFlags(MULTISAMPLE_X4 | STORAGE_READ_ONLY | STORAGE_WRITE_ONLY | STORAGE_READ_WRITE) }
[2025-12-04T06:06:17Z ERROR wgpu::backend::wgpu_core] Handling wgpu errors as fatal by default
thread '<unnamed>' panicked at wgpu/src/backend/wgpu_core.rs:1606:26:
wgpu error: Validation Error
Caused by:
In Device::create_texture
Format R32Float does not support multisampling
Repro steps
Checkout #8653
Expected vs observed behavior
These issues shouldn't be appearing
Extra materials
Platform
Literally every platform and backend
Metadata
Metadata
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area: correctnessWe're behaving incorrectlyWe're behaving incorrectlybackend: dx12Issues with DX12 or DXGIIssues with DX12 or DXGIbackend: glesIssues with GLES or WebGLIssues with GLES or WebGLbackend: metalIssues with MetalIssues with Metalbackend: vulkanIssues with VulkanIssues with Vulkan
Type
Projects
Status
Todo