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'''OpenGL extension ANGLE.pack_reverse_row_order
This module customises the behaviour of the
OpenGL.raw.GLES2.ANGLE.pack_reverse_row_order to provide a more
Python-friendly API
Overview (from the spec)
This extension introduces a mechanism to allow reversing the order
in which image rows are written into a pack destination. This
effectively allows an application to flip the results of a ReadPixels
in the y direction operation without having to render upside down.
The coordinate system of OpenGL is vertically reversed in comparison to a
number of other graphics systems such as native windowing APIs. Applications
that perform ReadPixels may have to either render to an intermediate color
buffer before calling ReadPixels or perform a flip in software after
ReadPixels. In some systems the GL can perform the row reversal during
ReadPixels without incurring additional cost.
The official definition of this extension is available here:
http://www.opengl.org/registry/specs/ANGLE/pack_reverse_row_order.txt
'''
from OpenGL import platform, constant, arrays
from OpenGL import extensions, wrapper
import ctypes
from OpenGL.raw.GLES2 import _types, _glgets
from OpenGL.raw.GLES2.ANGLE.pack_reverse_row_order import *
from OpenGL.raw.GLES2.ANGLE.pack_reverse_row_order import _EXTENSION_NAME
def glInitPackReverseRowOrderANGLE():
'''Return boolean indicating whether this extension is available'''
from OpenGL import extensions
return extensions.hasGLExtension( _EXTENSION_NAME )
### END AUTOGENERATED SECTION
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