Hello guys,
I have a texture of format DXGI_FORMAT_B8G8R8A8_UNORM_SRGB.
Is there a way to create shader resource view for the texture so that I could read it as RGBA from the shader instead of reading it specifically as BGRA?
I would like all the textures to be read as RGBA.
Tx
12 minutes ago, _void_ said:I would like all the textures to be read as RGBA.
Why do you not use DXGI_FORMAT_R8G8B8A8_UNORM_SRGB instead of DXGI_FORMAT_B8G8R8A8_UNORM_SRGB?
Yeah, I can convert the texture to DXGI_FORMAT_R8G8B8A8_UNORM_SRGB format.
I thought maybe there is a way to work this around using shader resource view, which I do not know about :-)
15 minutes ago, _void_ said:I thought maybe there is a way to work this around using shader resource view, which I do not know about :-)
You can assign multiple shader resource views with different types to a resource, but I am not sure if you can interpret BGRA as RGBA since the underlying bytes of the resource are ordered differently.
Assuming that you are actually using D3D12 like your tag implies, you can re-order the channels on SRV loads/samples using the Shader4ComponentMapping field of the SRV desc. See D3D12_SHADER_COMPONENT_MAPPING.
Am I being dumb, or wouldn't DXGI_FORMAT_B8G8R8A8 come through in the correct order into the shader without messing around with swizzles?
22 minutes ago, ajmiles said:Am I being dumb, or wouldn't DXGI_FORMAT_B8G8R8A8 come through in the correct order into the shader without messing around with swizzles?
Heh, that's a good point. It's essentially already got the swizzling baked into it so you can read it normally. Don't know why I didn't realize that...
