OpenGL.GL.SGI.color_table

OpenGL extension SGI.color_table

This module customises the behaviour of the OpenGL.raw.GL.SGI.color_table to provide a more Python-friendly API

Overview (from the spec)

This extension defines a new RGBA-format color lookup mechanism. It does not replace the color lookups defined by the GL Specification, but rather provides additional lookup capabilities with different operation. The key difference is that the new lookup tables are treated as 1-dimensional images with internal formats, like texture images and convolution filter images. From this follows the fact that the new tables can operate on a subset of the components of passing pixel groups. For example, a table with internal format ALPHA modifies only the A component of each pixel group, leaving the R, G, and B components unmodified.

If EXT_copy_texture is implemented, this extension also defines methods to initialize the color lookup tables from the framebuffer, in addition to the standard memory source mechanisms.

The official definition of this extension is available here: http://www.opengl.org/registry/specs/SGI/color_table.txt