[D3D12] Dynamically load Agility SDK. #86551
Merged
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Instead of relaying on exported symbols and D3D12 loader, load SDK directly via device factory. This should allow using user specified Agility SDK version instead of hard-coded one, and fallback to the system D3D driver if it's not found (so we can make official builds with Agility support, but avoid shipping proprietary DLL that require uses to accept EULA).
Adds
rendering/rendering_device/d3d12/agility_sdk_version
property to control used SDK version.Based on Mesa Agility loading code - https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/18305/diffs#b974333948460f1be995f150bf4db414b591b1b1