13.2.3.3 The Texture Color Table Extension

The texture color table extension (SGI_texture_color_table) provides a color table (GL_TEXTURE_COLOR_TABLE_SGI) which is applied to texels after filtering and prior to combination with the fragment color with the texture environment operation. The procedures to define, enable, and disable the texture color table are the same as those of the tables in SGI_color_table.

The texture color table extension is currently supported by the following vendors:

• Silicon Graphics
• Evans & Sutherland
• Hewlett Packard
• Sun Microsystems, Inc.

The texture color table is not part of the imaging subset of OpenGL 1.2.