[Feature Request] [SPIR-V] Support KHR_compute_shader_derivatives

[iagoCL]

Is your feature request related to a problem? Please describe.
Currently DXC only supports SPV_NV_compute_shader_derivatives and lacks support for SPV_KHR_compute_shader_derivatives

Shaders failed to execute on GPUs supporting KHR_compute_shader_derivatives instead of NV_compute_shader_derivatives

Describe the solution you'd like
Adding support for the official Khronos extension.

Describe alternatives you've considered
N/A

Additional context
Both extension are identical, adding support for KHR_compute_shader_derivatives is trivial. and only require adding the extension and its name to a few functions.

We have precedent for a similar situation we support the Nvidia and the official extensions for ray query, we select the official one by default.

[s-perron]

Can you provide an example? It could be that something was missed. We currently use the KHR by default extension: https://godbolt.org/z/MY3dW7o13.

Currently DXC only supports KHR_compute_shader_derivatives and lacks support for NV_compute_shader_derivatives

I'm guessing you meant this the other way around because it is inconsistent with the rest of the issue.

[iagoCL]

I'm guessing you meant this the other way around because it is inconsistent with the rest of the issue.

Yes. You are right. Sorry I apologize.
I made a mistake when writing the ticket. I updated the description to correct it.

Both extensions are identical, the main problem is this line:

OpExtension "SPV_NV_compute_shader_derivatives"

This will require GPUs to support NV_compute_shader_derivatives and will fail on GPUs only supporting KHR_compute_shader_derivatives

This is easy to fix since changing DXC to use SPV_KHR_compute_shader_derivatives is trivial.

[s-perron]

Yes, I did not look carefully at the extension name. Thanks for the fix.