I'm thinking of "abusing" texture combiners to quickly work around the missing GL_FOG in TinyGL. However, before I start with that and probably run into issues, I wanted to ask about TinyGL's texture combiner support state.
1. is GL_COMBINE supported in general? 2. is GL_INTERPOLATE supported? 3. is GL_CONSTANT supported (and consequently GL_TEXTURE_ENV_COLOR)?
If this all is supported, is it supported for all 3D hardware? Or not until OS version xyz?