OpenGL.GL.ARB.fragment_program_shadow

OpenGL extension ARB.fragment_program_shadow

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

Overview (from the spec)

This extension extends ARB_fragment_program to remove the interaction with ARB_shadow.

This extension defines the program option "ARB_fragment_program_shadow".

If a fragment program specifies the option "ARB_fragment_program_shadow"

SHADOW1D, SHADOW2D, SHADOWRECT

are added as texture targets. When shadow map comparisons are desired, specify the SHADOW1D, SHADOW2D, or SHADOWRECT texture targets in texture instructions.

Programs must assure that the comparison mode for each depth texture (TEXTURE_COMPARE_MODE) and/or the internal texture format (DEPTH_COMPONENT) and the targets of the texture lookup instructions match. Otherwise, if the comparison mode and/or the internal texture format are inconsistent with the texture target, the results of the texture lookup are undefined.

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