[Feature Request] [SPIR-V] WMMA support via VK_KHR_cooperative_matrix.. about directxshadercompiler HOT 2 CLOSED

You should be able to get it working via Proposal 0011 Inline SPIR-V's vk::SpirvType<> or SpirvTypeOpaque to declare a cooperative matrix type and the old regular [vk::ext_instruction] as outlined in the original Inline SPIR-V wiki (which is slightly out of date #6412 )

Try it in Godbolt.

from directxshadercompiler.

Wave Matrix support has not yet been added to HLSL but the proposal is in progress. Once cooperative matrices are a language feature, we'll work on an implementation in the SPIR-V backend. In the meantime, using Inline SPIR-V is the correct way to access Vulkan-specific features that are not yet surfaced in the high-level language.

from directxshadercompiler.