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Python Open Source » Game 2D 3D » PyOpenGL 
PyOpenGL » PyOpenGL 3.0.1 » OpenGL » GL » APPLE » aux_depth_stencil.py
'''OpenGL extension APPLE.aux_depth_stencil

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

Overview (from thespec import 
  
  Normally, each OpenGL drawable allocates at most one depth buffer and one
  stencil buffer, regardless of how many aux buffers there are.
  
  When the APPLE_aux_depth_stencil extension is used, and the depth buffer
  size is non-zero, the GL silently allocates a separate depth buffer for the
  color buffer and for each aux buffer.  Similarly, if the stencil buffer size
  is non-zero, a separate stencil buffer is allocated for the color buffer and
  each aux buffer.  This extension does not cause separate depth or stencil
  buffers to be allocated for the left and right buffers of a stereo drawable.
  A context with no aux buffers will be unaffected by this extension.  
  
  Switching the draw or read buffer from thecolorbuffertoanauxbuffer import 
  switching between two aux buffers, simultaneously switches the associated
  depth and stencil buffers, for drawing or reading.
  
  For example, if an OpenGL context has two aux buffers and non-zero depth
  buffer size, it will have a total of three depth buffers - one associated
  with the color buffer and one associated with each aux buffer.  If that
  context is used to render to AUX0, then to render to AUX1, the changes to
  the depth buffer made by the rendering to AUX1 will not affect the depth
  buffer associated with AUX0, and vice versa.

The official definition of this extension is available here:
http://www.opengl.org/registry/specs/APPLE/aux_depth_stencil.txt
'''
from OpenGL import platform,constants,constant,arrays
from OpenGL import extensions,wrapper
from OpenGL.GL import glget
import ctypes
from OpenGL.raw.GL.APPLE.aux_depth_stencil import *
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