glFlushRasterSGIX(3G)	       OpenGL Reference		 glFlushRasterSGIX(3G)

NAME    [Toc]    [Back]

     glFlushRasterSGIX - complete rasterization	of previous GL commands

C SPECIFICATION    [Toc]    [Back]

     void glFlushRasterSGIX( void )

DESCRIPTION    [Toc]    [Back]

     Different GL implementations buffer commands in several different
     locations,	including network buffers and the graphics accelerator itself.
     glFlushRasterSGIX causes all GL commands that preceed glFlushRasterSGIX
     to	complete rasterization before the GL commands that follow begin
     rasterization.  This is essential for some	types of performance
     measurement; see glInstrumentsBufferSGIX.

     The point in the GL machine that defines the start	of rasterization is
     implementation dependent.

NOTES    [Toc]    [Back]

     glFlushRasterSGIX is part of the GL_SGIX_flush_raster extension, not part
     of	the core GL command set.  See glIntro for information about using
     extensions.

     glFlushRasterSGIX probably	will not block since it	must get to the
     rasterization point of the	GL machine before it causes any	flushing.

ERRORS    [Toc]    [Back]

     GL_INVALID_OPERATION is generated if glFlushRasterSGIX is executed
     between the execution of glBegin and the corresponding execution of
     glEnd.


MACHINE	DEPENDENCIES
     The SGIX_flush_raster extension is	supported only on InfiniteReality
     systems.

SEE ALSO    [Toc]    [Back]

     glFinish, glFlush


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