[D3D12] Improve shader validation handling.

[bruvzg]

Depends on godotengine/godot-nir-static#8

• Allow running without validation if developer mode is enabled.
• Show error message if DXIL.dll is not found instead of silently crashing.

[RandomShaper]

Looks good. I'm only wondering if whether dev mode is enabled should be part of the shader cache key. Otherwise, I think you can lock yourself up in non-validated shaders if you eventually disable dev mode, until the cache is invalidated for some reason.

[bruvzg]

I'm only wondering if whether dev mode is enabled should be part of the shader cache key. Otherwise, I think you can lock yourself up in non-validated shaders if you eventually disable dev mode, until the cache is invalidated for some reason.

I have already added it to the RenderingDeviceDriverD3D12::shader_get_binary_cache_key() for exactly this purpose, or there's some other shader cache key.

[akien-mga]

Needs rebase after #87340.

[bruvzg]

Rebased, also added a few minor fixes for MinGW build, which was broken by #87340.

[RandomShaper]

I have already added it to the RenderingDeviceDriverD3D12::shader_get_binary_cache_key() for exactly this purpose, or there's some other shader cache key.

Oh, it's just that I reviewed this late, on my phone, and I missed that part. My apologies.

[akien-mga]

Thanks!