This uses a light parser / string modification pass to convert C++ enum declaration syntax to GLSL compatible one. GLSL having no support for enums, we are forced to convert the enum values to a series of constant uints. The parser (not really one by the way), being stupidly simple, will not change anything to the values and thus make some C++ syntax (like omitting the values) not work. The string replacement happens on all GLSL files on startup. I did not measure significant changes in blender startup speed. There is plans to do all of this at compile time. We limit the scope of the search to `.h` and `.hh` files to prevent confusing syntax in `.glsl` files. There is basic error reporting with file, line and char logging for easy debuggabiliy. The requirements to use this enum sharing system are already listed in `gpu_shader_shared_utils.h` and repeated on top of the preprocessor function.
12 KiB
12 KiB