[SPIR-V][Feature Request][SM6.5] Add support for FeedbackTexture2D about directxshadercompiler HOT 2 CLOSED

Vulkan & SPIR-V is a bit less managed than DX12 & HLSL, I'm not sure same functionality exists in Vulkan

For sample we have no Append/Consume etc.

there's VK_NV_shader_image_footprint but that doesn't give you a thing to write the feedback to, only query the region accessed

emulating this DX12 feature in SPIR-V would require cooperation from the application to supply a BDA ponter, SSBO or Storage Image to use as the feedback and a contract on how to interpret this data

from directxshadercompiler.

After further investigation, we've decided not to implement this feature in the SPIR-V backend at this time because there is not a solid mapping from DX to Vulkan that would support the full feature's requirements, or most Vulkan end users.

We are open to feedback so additional comments/issues are welcome if this is a high-priority feature for your use case.

Improving the error messaging with #6640

from directxshadercompiler.