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 ex- ecuted 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 accelera- tor that buffers commands, all programs should call glFlush whenever they count on having all of their previously issued commands completed. For ex- ample, call glFlush before waiting for user input that depends on the gen- erated 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 execu- tion of glBegin and the corresponding execution of glEnd. SEE ALSO glFinish GLFLUSH()
NAME | C SPECIFICATION | DESCRIPTION | NOTES | ERRORS | SEE ALSO
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