koobas.hobune.stream
Can a CG shader fail to work on hardware?
I've been writing some shaders and trying to find out if I need to write a backup for my CG shader in HLSL. All the references to HLSL in Unity I can find seem to indicate that CG/HLSL are interchangeable and you don't need both, but I was under the impression that some graphics cards only support HLSL/CG was an NVIDIA-centric thing.
Right now I have a working CG shader with a GLSL backup if that fails to compile. Do I need to also create an HLSL backup?
If you're not running the Editor in OpenGL mode, then GLSL won't compile. That's on Windows, anyway.
Best Answer
No. Unity compiles Cg to assembly. Look at the compiled shader to see this. GLSL is there. Cg isn't.
