glFlush : PyOpenGL 3.0.2 GL Man Pages

force execution of GL commands in finite time

Signature

glFlush( ( void ) )-> void

glFlush( )

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.

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/ .

Sample Code References

The following code samples have been found which appear to reference the functions described here. Take care that the code may be old, broken or not even use PyOpenGL.

glFlush

OpenGLContext OpenGLContext/context.py Lines: 496

OpenGL-Demo PyOpenGL-Demo/redbook/smooth.py Lines: 82

OpenGL-Demo PyOpenGL-Demo/redbook/movelight.py Lines: 109

OpenGL-Demo PyOpenGL-Demo/redbook/fog.py Lines: 113

OpenGL-Demo PyOpenGL-Demo/redbook/cube.py Lines: 74

OpenGL-Demo PyOpenGL-Demo/redbook/lines.py Lines: 118

OpenGL-Demo PyOpenGL-Demo/redbook/hello.py Lines: 75

OpenGL-Demo PyOpenGL-Demo/redbook/drawf.py Lines: 87

OpenGL-Demo PyOpenGL-Demo/redbook/scene.py Lines: 104

OpenGL-Demo PyOpenGL-Demo/da/dots.py Lines: 61

OpenGL-Demo PyOpenGL-Demo/proesch/simple/simpleQuad.py Lines: 26

OpenGL-Demo PyOpenGL-Demo/dek/tile.py Lines: 42

OpenGL-Demo PyOpenGL-Demo/NeHe/lesson26.py Lines: 192

OpenGL-Demo PyOpenGL-Demo/NeHe/lesson48/Lesson48.py Lines: 147

{Artistic License} PymmLib applications/tlsviewer.py Lines: 194, 218

{Artistic License} PymmLib applications/glutviewer.py Lines: 381

{LGPL} PyMT pymt/texture.py Lines: 18, 263, 328

{GPL} GLChess src/lib/gtkui/chessview.py Lines: 177

{GPL} GLChess src/lib/scene/opengl/opengl.py Lines: 441

{LGPL} Pyggel pyggel/__init__.py Lines: 18

{LGPL or GPL or MPL} Kamaelia Code/Python/Kamaelia/Kamaelia/UI/OpenGL/OpenGLDisplay.py Lines: 574, 792

{LGPL or GPL or MPL} Kamaelia Sketches/CL/Topology3D/Experiments/Cubes.py Lines: 323

{LGPL or GPL or MPL} Kamaelia Sketches/CL/Topology3D/THF/Examples/simplecube/simplecube_controlled.py Lines: 148

{LGPL or GPL or MPL} Kamaelia Sketches/CL/Topology3D/THF/Examples/simplecube/simplecube.py Lines: 87

{LGPL or GPL or MPL} Kamaelia Sketches/CL/Topology3D/THF/Kamaelia/UI/OpenGL/OpenGLDisplay.py Lines: 574, 793

{LGPL or GPL or MPL} Kamaelia Sketches/CL/Topology3D/THF/Sketches/Display3D.py Lines: 519

{LGPL or GPL or MPL} Kamaelia Sketches/CL/Topology3D/THF/Sketches/playground/Display3D.py Lines: 421, 477

{LGPL or GPL or MPL} Kamaelia Sketches/THF/3D/Display3D.py Lines: 519

{LGPL or GPL or MPL} Kamaelia Sketches/THF/3D/playground/Display3D.py Lines: 421, 477

{LGPL or GPL or MPL} Kamaelia Sketches/THF/Packages/Kamaelia/Community/THF/Kamaelia/UI/OpenGL/OpenGLDisplay.py Lines: 574, 792

{LGPL or GPL or MPL} Kamaelia Sketches/THF/simplecube/simplecube_controlled.py Lines: 148

{LGPL or GPL or MPL} Kamaelia Sketches/THF/simplecube/simplecube.py Lines: 87

{LGPL or GPL or MPL} Kamaelia Sketches/MPS/Old/SoC/simplecube.py Lines: 123

Visvis utils/cropper.py Lines: 413

Visvis core/line.py Lines: 692, 836, 847

Visvis core/axises.py Lines: 2030

Visvis backends/backend_gtk.py Lines: 187

Visvis functions/boxplot.py Lines: 327

Visvis functions/bar.py Lines: 153

Visvis text/text_base.py Lines: 262

Visvis wobjects/textures.py Lines: 546, 788, 1212

Visvis wobjects/sliceTextures.py Lines: 186

Visvis wobjects/polygonalModeling.py Lines: 1063

Visvis wibjects/colorWibjects.py Lines: 688