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'''OpenGL extension IMG.read_format
This module customises the behaviour of the
OpenGL.raw.GLES2.IMG.read_format to provide a more
Python-friendly API
Overview (from the spec)
This extension is intended to supplement the GL_OES_read_format
extension by adding support for more format/type combinations to be used
when calling ReadPixels. ReadPixels currently accepts one fixed
format/type combination (format RGBA and type UNSIGNED_BYTE) for
portability, and an implementation specific format/type combination
queried using the tokens IMPLEMENTATION_COLOR_READ_FORMAT_OES and
IMPLEMENTATION_COLOR_READ_TYPE_OES (GL_OES_read_format extension). This
extension adds the following format/type combinations to those currently
allowed to be returned by GetIntegerV:
format type
------ ----
BGRA_IMG UNSIGNED_BYTE
BGRA_IMG UNSIGNED_SHORT_4_4_4_4_REV_IMG
E.g. Calling GetIntegerv with a <pname> parameter of
IMPLEMENTATION_COLOR_READ_FORMAT_OES can now return BGRA, with the
corresponding call to GetIntegerv using a <pname> parameter of
IMPLEMENTATION_COLOR_READ_TYPE_OES returning UNSIGNED_BYTE;
The official definition of this extension is available here:
http://www.opengl.org/registry/specs/IMG/read_format.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.IMG.read_format import *
from OpenGL.raw.GLES2.IMG.read_format import _EXTENSION_NAME
def glInitReadFormatIMG():
'''Return boolean indicating whether this extension is available'''
from OpenGL import extensions
return extensions.hasGLExtension( _EXTENSION_NAME )
### END AUTOGENERATED SECTION
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