Michel Dänzer wrote: > On Wed, 2007-11-28 at 09:30 +0000, Keith Whitwell wrote: >> Kristian Høgsberg wrote: >> >>> Another problem is that it's not just swapbuffer - anything that >>> touches the front buffer have to respect the cliprects - glCopyPixels >>> and glXCopySubBufferMESA - and thus have to happen in the kernel. >> These don't touch the real swapbuffer, just the fake one. Hence they >> don't care about cliprects and certainly don't have to happen in the >> kernel... > > I'm not sure about glCopyPixels, but glXCopySubBufferMESA would most > definitely be useless if it didn't copy to the real frontbuffer.
Yes, wasn't paying attention... glxCopySubBufferMESA would do both - copy to the fake front buffer and then trigger a damage-induced update of the real frontbuffer. Neither operation requires the 3d driver know about cliprects, and the damage operation is basically a generalization of the swapbuffer stuff we've been talking about. Keith ------------------------------------------------------------------------- SF.Net email is sponsored by: The Future of Linux Business White Paper from Novell. From the desktop to the data center, Linux is going mainstream. Let it simplify your IT future. http://altfarm.mediaplex.com/ad/ck/8857-50307-18918-4 -- _______________________________________________ Dri-devel mailing list Dri-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/dri-devel
