dan elksnitis c1f33c7a82 [shaders] debug usf/direct compile cleanup ...

- never append the environment defines as commented code to the source used for further preprocessing/compilation; instead only append it to the debug USF
- strip comments after loading the debug usf in direct compile mode as some backends expect comments to have already been removed and the extra ones we add to the debug dump cause them to barf
- change all #if 0s in the debug usf to block comments instead so the above can strip them (said backends also don't like preprocessor directives left in the file)

#rb Jason.Nadro, rob.krajcarski

[CL 30161438 by dan elksnitis in ue5-main branch]

2023-12-06 13:32:32 -05:00

..

ShaderPreprocessor.h

[shaders] debug usf/direct compile cleanup

2023-12-06 13:32:32 -05:00