Question: Can we create a linear-space views of SRGB textures or SRGB views of linear-space textures?

[yanchith]

I have a pipeline that is SRGB aware, but after a certain point I'd like to treat it as Rgba8Unorm, because I composite UI on top, and there's colors there that users set in code, so their eye does the correction already.

Tried to achieve this with a texture that is Rgba8Unorm, but creating an Rgba8UnormSrgb write view and a Rgba8Unorm read view. Unfortunately, the validator doesn't like it much:

thread 'main' panicked at 'wgpu error: Validation Error

Caused by:
    In Texture::create_view
    Unable to view texture Rgba8Unorm as Rgba8UnormSrgb

Is there a reason this shouldn't be working?

[cwfitzgerald]

This is supported in the spec, but we currently don't support this as no one has implemented it yet.

[yanchith]

Oh, that's great to hear! I think I'll need it eventually for the engine I am working on, and I'd be happy to implement it in wgpu when that happens (can't commit to specific dates yet, sorry).

I think we can label this as a feature request, meanwhile.

[expenses]

👍 This is needed for using a srgb TextureView for the surface on the web.