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'''OpenGL extension SGIX.async_pixel
Overview (from the spec)
This extension introduces a new asynchronous mode for texture
download, pixel download and pixel readback commands. It allows
programs to transfer textures or images between the host and the
graphics accelerator in parallel with the execution of other
graphics commands (possibly taking advantage of a secondary path
to the graphics accelerator). It also allows programs to issue
non-blocking pixel readback commands that return immediately after
they are issued so that the program can issue other commands while
the readback takes place.
The official definition of this extension is available here:
http://oss.sgi.com/projects/ogl-sample/registry/SGIX/async_pixel.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_SGIX_async_pixel'
GL_ASYNC_TEX_IMAGE_SGIX = constant.Constant( 'GL_ASYNC_TEX_IMAGE_SGIX', 0x835C )
glget.addGLGetConstant( GL_ASYNC_TEX_IMAGE_SGIX, (1,) )
GL_ASYNC_DRAW_PIXELS_SGIX = constant.Constant( 'GL_ASYNC_DRAW_PIXELS_SGIX', 0x835D )
glget.addGLGetConstant( GL_ASYNC_DRAW_PIXELS_SGIX, (1,) )
GL_ASYNC_READ_PIXELS_SGIX = constant.Constant( 'GL_ASYNC_READ_PIXELS_SGIX', 0x835E )
glget.addGLGetConstant( GL_ASYNC_READ_PIXELS_SGIX, (1,) )
GL_MAX_ASYNC_TEX_IMAGE_SGIX = constant.Constant( 'GL_MAX_ASYNC_TEX_IMAGE_SGIX', 0x835F )
glget.addGLGetConstant( GL_MAX_ASYNC_TEX_IMAGE_SGIX, (1,) )
GL_MAX_ASYNC_DRAW_PIXELS_SGIX = constant.Constant( 'GL_MAX_ASYNC_DRAW_PIXELS_SGIX', 0x8360 )
glget.addGLGetConstant( GL_MAX_ASYNC_DRAW_PIXELS_SGIX, (1,) )
GL_MAX_ASYNC_READ_PIXELS_SGIX = constant.Constant( 'GL_MAX_ASYNC_READ_PIXELS_SGIX', 0x8361 )
glget.addGLGetConstant( GL_MAX_ASYNC_READ_PIXELS_SGIX, (1,) )
def glInitAsyncPixelSGIX():
'''Return boolean indicating whether this extension is available'''
return extensions.hasGLExtension( EXTENSION_NAME )
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