Sufficient for compiling a no-op pixel shader. This should probably be rebased on top of !263 because it introduces vkd3d_spirv_get_type_id_for_data_type(), which 263 renders unnecessary. !263 is not essential, but I think using two different type systems in the backend is not ideal. -- v2: vkd3d-shader/dxil: Emit undefined constants. vkd3d-shader/spirv: Introduce an undefined register type. vkd3d-shader/dxbc: Allow DXBC containers to have a zero checksum. vkd3d-shader/dxil: Emit the shader instructions. vkd3d-shader/spirv: Do not normalise Shader Model 6 shaders. vkd3d-shader/dxil: Return an error from sm6_parser_globals_init() on invalid operand count. https://gitlab.winehq.org/wine/vkd3d/-/merge_requests/278