| GL_SGI_color_matrix | |
| http://oss.sgi.com/projects/ogl-sample/registry/SGI/color_matrix.txt | |
| GL_COLOR_MATRIX_SGI 0x80B1 | |
| GL_COLOR_MATRIX_STACK_DEPTH_SGI 0x80B2 | |
| GL_MAX_COLOR_MATRIX_STACK_DEPTH_SGI 0x80B3 | |
| GL_POST_COLOR_MATRIX_RED_SCALE_SGI 0x80B4 | |
| GL_POST_COLOR_MATRIX_GREEN_SCALE_SGI 0x80B5 | |
| GL_POST_COLOR_MATRIX_BLUE_SCALE_SGI 0x80B6 | |
| GL_POST_COLOR_MATRIX_ALPHA_SCALE_SGI 0x80B7 | |
| GL_POST_COLOR_MATRIX_RED_BIAS_SGI 0x80B8 | |
| GL_POST_COLOR_MATRIX_GREEN_BIAS_SGI 0x80B9 | |
| GL_POST_COLOR_MATRIX_BLUE_BIAS_SGI 0x80BA | |
| GL_POST_COLOR_MATRIX_ALPHA_BIAS_SGI 0x80BB |