OpenGL extension SGIX.texture_scale_bias
This module customises the behaviour of the OpenGL.raw.GL.SGIX.texture_scale_bias to provide a more Python-friendly API
Overview (from the spec)
This extension adds scale, bias, and clamp to
operations to the texture pipeline. These operations are applied to the filtered result of a texture lookup, before that result is used in the texture environment equations and before the texture color lookup table of SGI_texture_color_table, if that extension exists. These operations are distinct from the scale, bias, and clamp operations that appear in the SGI_color_table extension, which are used to define a color lookup table.
Scale and bias operations on texels can be used to better utilize the color resolution of a particular texture internal format (see EXT_texture).
The official definition of this extension is available here:
Return boolean indicating whether this extension is available