On Don, 2011-11-10 at 11:01 +0100, Theiss, Ingo wrote: > > The function calls of mesa/state_tracker/st_cb_readpixels.c:382 -> > st_readpixels and mesa/main/pack.c:552 -> _mesa_pack_rgba_span_float > clearly stands out when comparing the 32 bit and 64 bit profile.
I'm afraid that's a red herring, as I don't think glXSwapBuffers calls glReadPixels under any circumstances. I suspect the time inside glXSwapBuffers isn't spent on CPU cycles but rather waiting for some kind of event(s). Offhand I don't know any better way to debug that than attaching gdb, interrupting execution every now and then and hoping to catch it somewhere inside glXSwapBuffers. Maybe others have better ideas. -- Earthling Michel Dänzer | http://www.amd.com Libre software enthusiast | Debian, X and DRI developer _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-dev
