glFlush man page on Oracle
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GLFLUSH(3G) OpenGL Manual GLFLUSH(3G)
NAME
glFlush - force execution of GL commands in finite time
C SPECIFICATION
void glFlush(void);
DESCRIPTION
Different GL implementations buffer commands in several different
locations, including network buffers and the graphics accelerator
itself. glFlush empties all of these buffers, causing all issued
commands to be executed as quickly as they are accepted by the actual
rendering engine. Though this execution may not be completed in any
particular time period, it does complete in finite time.
Because any GL program might be executed over a network, or on an
accelerator that buffers commands, all programs should call glFlush
whenever they count on having all of their previously issued commands
completed. For example, call glFlush before waiting for user input that
depends on the generated image.
NOTES
glFlush can return at any time. It does not wait until the execution of
all previously issued GL commands is complete.
SEE ALSO
glFinish()
COPYRIGHT
Copyright © 1991-2006 Silicon Graphics, Inc. This document is licensed
under the SGI Free Software B License. For details, see
http://oss.sgi.com/projects/FreeB/.
AUTHORS
opengl.org
opengl.org 04/29/2014 GLFLUSH(3G)
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