Keith Whitwell wrote: > > libGL.so provides a dispatch table that can be efficiently switched. The real > 'gl' entrypoints basically just look up an offset in this table and jump to > it. No new arguments, no new stack frame, nada -- just an extremely efficient > jump. Note that this is the library entrypoint, so we can't ask the caller to > use a function pointer instead: > > 00041930 <glBlendFunc>: > 41930: a1 00 00 00 00 mov 0x0,%eax > 41935: ff a0 c4 03 00 00 jmp *0x3c4(%eax) > > unfortunately, that version isn't threadsafe, but Gareth is relentlessly > persuing an efficient threadsafe equivalent.
That's certainly one way to put it ;-) I'll probably send you and Brian an email about this pretty soon, I'd imagine. Things are looking good. -- Gareth ------------------------------------------------------- This sf.net email is sponsored by:ThinkGeek Welcome to geek heaven. http://thinkgeek.com/sf _______________________________________________ Dri-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/dri-devel
