From: axel@spamann.de
Date: Mon 18 Jun 2001 - 15:31:56 IDT
Hi there,
I would be very thankful for a description on, or an example of the use of gl_enablepageflipping in vgagl.
As I understand it, one should use gl_enablepageflipping on a GraphicsContext that points to a buffer in video memory. The only way to get such a GraphicsContext seems to be a call to gl_setcontextvga(). So, if I want 2 pages, I would create the first with a call to setcontextvga(), enable pageflipping on it with gl_enablepageflipping and afterwards create the second page:
GraphicsContext *page1, page2;
page1 = gl_allocatecontext();
page1 = gl_getcontext();
gl_enablepageflipping(page1);
page2 = gl_allocatecontext();
How do I continue? I cannot fill page2 by a call to gl_getcontext as that would leave me with page1 and page2 referring to the same context, i.e. the physical screen. I tried different things but they all amount to mere guessing ... (yes, gl_enablepageflipping returns 3, so it should work)
Thanks a lot!
Axel
Axel Spamann
University of Cologne
Axel@Spamann.de
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