-- v4: vkd3d-shader/dxil: Implement DX intrinsic Saturate. vkd3d-shader/dxil: Implement DX intrinsic FAbs. vkd3d-shader/dxil: Implement DX intrinsics FMa, FMad, IMad and UMad. vkd3d-shader/spirv: Use dst register data type in spirv_compiler_emit_imad(). tests/hlsl: Add tests for mad() and fma().