| GL_NV_occlusion_query | |
| http://oss.sgi.com/projects/ogl-sample/registry/NV/occlusion_query.txt | |
| GL_PIXEL_COUNTER_BITS_NV 0x8864 | |
| GL_CURRENT_OCCLUSION_QUERY_ID_NV 0x8865 | |
| GL_PIXEL_COUNT_NV 0x8866 | |
| GL_PIXEL_COUNT_AVAILABLE_NV 0x8867 | |
| void glBeginOcclusionQueryNV (GLuint id) | |
| void glDeleteOcclusionQueriesNV (GLsizei n, const GLuint* ids) | |
| void glEndOcclusionQueryNV (void) | |
| void glGenOcclusionQueriesNV (GLsizei n, GLuint* ids) | |
| void glGetOcclusionQueryivNV (GLuint id, GLenum pname, GLint* params) | |
| void glGetOcclusionQueryuivNV (GLuint id, GLenum pname, GLuint* params) | |
| GLboolean glIsOcclusionQueryNV (GLuint id) |