microsoft/spirv2dxil: Support pack_32_2x16 and pack_32_4x8 (!19273) · Merge requests · Mesa / mesa · GitLab

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Pedro J. Estébanez requested to merge RandomShaper/mesa:support_pack_half_2x16 into main Oct 24, 2022

pack_32_2x16: DXIL can already pack f32 into int16, but lowering is needed for packing both ints into one.
pack_32_4x8: supported for now just by lowering. DXIL has 4x8 packing intrinsics (on SM >= 6.6), but I'm not experienced enough to deal with overload resolution.