FreeBSD Manual Pages
GLFLUSH() GLFLUSH() NAME glFlush - force execution of GL commands in finite time C SPECIFICATION void glFlush( void ) DESCRIPTION Different GL implementations buffer commands in several different loca- tions, 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 en- gine. 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 ac- celerator that buffers commands, all programs should call glFlush when- ever they count on having all of their previously issued commands com- pleted. 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. ERRORS GL_INVALID_OPERATION is generated if glFlush is executed between the execution of glBegin and the corresponding execution of glEnd. SEE ALSO glFinish GLFLUSH()
NAME | C SPECIFICATION | DESCRIPTION | NOTES | ERRORS | SEE ALSO
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