Jakub Jelinek wrote: > Hi! > > What percentage of applications use different dispatch > tables among its threads? How often do dispatch table changes > occur? If both of these are fairly low, computing a dispatch table > in an awx section at dispatch table switch time might be fastest
I should also point out that display list compilation and playback is another place where the dispatch table changes (typically, you have at least a dispatch table for regular immediate mode, display list compilation and display list playback). One of the ugliest things about the Microsoft Windows implementation of OpenGL is that the driver backend must call a function to register a new dispatch table, and the OpenGL library then makes several copies of this table internally. Being able to switch dispatch tables with a single pointer reassignment makes it easy to do very powerful optimizations. -- Gareth _______________________________________________________________ Have big pipes? SourceForge.net is looking for download mirrors. We supply the hardware. You get the recognition. Email Us: [EMAIL PROTECTED] _______________________________________________ Dri-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/dri-devel
