GCC 4.7 enables constexpr, not 4.6
Fix bugs with Cg shaders
Interrogate overhaul that dramatically increases performance for the simpler methods
Add shininess shader input
Shader generator should use float3 for normals, not float4
Support for integer vertex attributes in GLSL
Support generating mipmaps for 32-bit float textures
Fix GLSL bug on nvidia cards with disabling vertex attribs