Hi! Am Fr, den 19.11.2004 schrieb Keith Whitwell um 10:50: > As Alan points out, we blit the dirty regions to the back buffer rather than > re-rendering everything multiple times. This was the easiest scheme to > implement, and has a big speed advantage for fallback and complex rendering. > It is however the reason that the current page-flipping code isn't strictly > conformant, as the situation where X11 and GL rendering to the same drawable > simultaneously isn't handled correctly in all circumstances.
Do You mean that X rendering should go only into front buffer. I tried to fix that situation. I just skip shadowfb updates to areas covered by 3d windows, this was necessary to solve some problems with moving windows and stereo. > I expect that there will be a bunch of annoying compatibility, etc problems > in > the drm and dri interfaces to do with getting the information to the client, > etc, where the assumption has been made that there are only 2 buffers. Actually I don't think this would be really hard. I have added to additional buffers (front right, and back right) in radeon driver and only few places in mesa driver needed modifications. Currently page flipping and stereo are exclusive due to some race issues, but this could be fixed using radeon registers for stereo and would have nothing to do with tripple buffering. Actually I even had a version with stereo and pageflipping working simultaneously. You can take a look at my patches: http://stud.ics.p.lodz.pl/~paproch/dri-stereo Maybe You will find some helpful informations. best, -- Jacek Rosik <[EMAIL PROTECTED]> ------------------------------------------------------- This SF.Net email is sponsored by: InterSystems CACHE FREE OODBMS DOWNLOAD - A multidimensional database that combines robust object and relational technologies, making it a perfect match for Java, C++,COM, XML, ODBC and JDBC. www.intersystems.com/match8 -- _______________________________________________ Dri-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/dri-devel
