Expect shader_primitive_index tests to fail on AMD RADV POLARIS12. #2754
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On Fedora, mesa-vulkan-drivers 22.0.3 AMD RADV POLARIS12 just colors both the NE and SW corners red. There's no blue. (NW and SE are white, as expected.) I suspect this means that the primitive ID is always being passed as zero. This is probably not just due to a difference in rasterization: I tried enlarging the texture to 4x4 and shifting the triangles to ensure that there was a pixel in each quadrant that was fully covered. With Vulkan "llvmpipe (LLVM 14.0.0, 256 bits)", the unmodified test passes. This is probably limited to Linux, but `wgpu_tests::common::TestParameters` doesn't have a slot for that. Fixes gfx-rs#2751.
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On Fedora, mesa-vulkan-drivers 22.0.3 AMD RADV POLARIS12 just colors both the NE and SW corners red. There's no blue. (NW and SE are white, as expected.) I suspect this means that the primitive ID is always being passed as zero.
This is probably not just due to a difference in rasterization: I tried enlarging the texture to 4x4 and shifting the triangles to ensure that there was a pixel in each quadrant that was fully covered.
With Vulkan "llvmpipe (LLVM 14.0.0, 256 bits)", the unmodified test passes.
This is probably limited to Linux, but
wgpu_tests::common::TestParametersdoesn't have a slot for that.Fixes #2751.