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This is a bit of a dead end for us now so I'm reducing my priority in getting this working and PRing what I have. If anyone wants to continue on my work, feel free to take this PR as your own.
Current status:
To be done:
SDL_shadercrossonly supports SPIRV compilation from HLSL. Have a lot of trouble getting this working - it builds fine on win-x64/x86 but not arm64 for example.rpathaddition to a separate PR. I think we could apply this for all current libs, which would allow them to work without requiring anSDL_Init(). It's definitely required forSDL_shadercrossthough (loads the spirv-cross shared lib).