GL_PGI_vertex_hints http://www.opengl.org/registry/specs/PGI/vertex_hints.txt GL_PGI_vertex_hints GL_VERTEX23_BIT_PGI 0x00000004 GL_VERTEX4_BIT_PGI 0x00000008 GL_COLOR3_BIT_PGI 0x00010000 GL_COLOR4_BIT_PGI 0x00020000 GL_EDGEFLAG_BIT_PGI 0x00040000 GL_INDEX_BIT_PGI 0x00080000 GL_MAT_AMBIENT_BIT_PGI 0x00100000 GL_VERTEX_DATA_HINT_PGI 107050 GL_VERTEX_CONSISTENT_HINT_PGI 107051 GL_MATERIAL_SIDE_HINT_PGI 107052 GL_MAX_VERTEX_HINT_PGI 107053 GL_MAT_AMBIENT_AND_DIFFUSE_BIT_PGI 0x00200000 GL_MAT_DIFFUSE_BIT_PGI 0x00400000 GL_MAT_EMISSION_BIT_PGI 0x00800000 GL_MAT_COLOR_INDEXES_BIT_PGI 0x01000000 GL_MAT_SHININESS_BIT_PGI 0x02000000 GL_MAT_SPECULAR_BIT_PGI 0x04000000 GL_NORMAL_BIT_PGI 0x08000000 GL_TEXCOORD1_BIT_PGI 0x10000000 GL_TEXCOORD2_BIT_PGI 0x20000000 GL_TEXCOORD3_BIT_PGI 0x40000000 GL_TEXCOORD4_BIT_PGI 0x80000000