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- '''OpenGL extension MESA.pack_invert
-
- Overview (from the spec)
-
- This extension adds a new pixel storage parameter to indicate that
- images are to be packed in top-to-bottom order instead of OpenGL's
- conventional bottom-to-top order. Only pixel packing can be
- inverted (i.e. for glReadPixels, glGetTexImage, glGetConvolutionFilter,
- etc).
-
- Almost all known image file formats store images in top-to-bottom
- order. As it is, OpenGL reads images from the frame buffer in
- bottom-to-top order. Thus, images usually have to be inverted before
- writing them to a file with image I/O libraries. This extension
- allows images to be read such that inverting isn't needed.
-
- The official definition of this extension is available here:
- http://oss.sgi.com/projects/ogl-sample/registry/MESA/pack_invert.txt
-
- Automatically generated by the get_gl_extensions script, do not edit!
- '''
- from OpenGL import platform, constants, constant, arrays
- from OpenGL import extensions
- from OpenGL.GL import glget
- import ctypes
- EXTENSION_NAME = 'GL_MESA_pack_invert'
- GL_PACK_INVERT_MESA = constant.Constant( 'GL_PACK_INVERT_MESA', 0x8758 )
- glget.addGLGetConstant( GL_PACK_INVERT_MESA, (1,) )
-
-
- def glInitPackInvertMESA():
- '''Return boolean indicating whether this extension is available'''
- return extensions.hasGLExtension( EXTENSION_NAME )
-