| GL_NV_register_combiners2 | |
| http://oss.sgi.com/projects/ogl-sample/registry/NV/register_combiners2.txt | |
| GL_PER_STAGE_CONSTANTS_NV 0x8535 | |
| void glCombinerStageParameterfvNV (GLenum stage, GLenum pname, const GLfloat* params) | |
| void glGetCombinerStageParameterfvNV (GLenum stage, GLenum pname, GLfloat* params) |