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anv: Swizzle fast-clear values

Faith Ekstrand requested to merge gfxstrand/mesa:review/anv-swizzle-fast-clear into master

Starting with Gen12, we can fast-clear a lot more surface formats and we are suddenly in the position of having to fast-clear surfaces with formats with an implicit swizzle such as VK_FORMAT_R4G4B4A4_UNORM_PACK16 which is represented as ISL_FORMAT_A4B4G4R4 with a BGRA swizzle. In order for blorp to do the fast-clear color conversion for us, it needs a properly swizzled color.

This fixes the following Vulkan CTS groups on TGL:

  • dEQP-VK.pipeline.blend.format.b4g4r4a4_unorm_pack16.*
  • dEQP-VK.api.image_clearing.core.clear_color_image.*.b4g4r4a4*
Edited by Faith Ekstrand

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