ptitSeb
GL_POLYGON_OFFSET_LINE/GL_POLYGON_OFFSET_POINT support
A cause of warnings spam in OpenMW is a lack of GL_POLYGON_OFFSET_LINE and GL_POLYGON_OFFSET_POINT support in gl4es. If I understood correctly, GLES does not support these modes, and OpenSceneGraph even does not use them in the GLES mode. The problem is that gl4es pretends to be an OpenGL instead of GLES, and OSG tries to use these unsupported modes, what causes "invalid enumerant" errors in gl4es.
If it is hard to emulate these modes, probably it is worth at least to implement a some kind of stub, which will not spam warnings. So far Android port devs build an OSG version with custom patch as workaround.
Emulating those is pretty difficult, but a stub can be done yes. I'll add that to my TODO.
