Vulkan mapping for S3TC compressed formats

KhronosGroup / KTX-Software

KTX (Khronos Texture) Library and Tools

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Vulkan mapping for S3TC compressed formats #153

Closed ajtribick closed 4 years ago

ajtribick commented 4 years ago

It looks like these mappings are the wrong way round. As far as I am aware, DXT3 should be BC2 while DXT5 should be BC3.

https://github.com/KhronosGroup/KTX-Software/blob/1768624f33f8767aa4ad73d6e3a218847d92e489/lib/vk_format.h#L677-L678

MarkCallow commented 4 years ago

Yes they are. Thanks for the report. This is actually fixed in the ktx2 branch. I haven't backported it because I expect to merge ktx2 into master soon. Do you need a fix urgently?

ajtribick commented 4 years ago

Good to know it's fixed in ktx2, thanks for the confirmation. I personally don't need an urgent fix, so I can wait for the merge.

MarkCallow commented 4 years ago

This is now fixed in master as well as ktx2.