[Mesa-dev] Performance glxSwapBuffers 32 bit vs. 64 bit
ingo.theiss at i-matrixx.de
Fri Nov 11 08:41:53 PST 2011
> > Ok I have added -mfpmath=sse to the 32-bit CFLAGS and the readback
> > performance increased from 30.44 Mpixels/sec to 48.92 Mpixel/sec. We
> > are getting closer to the 64-bit performance.
> hmm. you should try -msse2 too. It's implied on 64bits, and I'm not sure if -march/-mfpmath=sse by itself will enable the intrinsics.
Added -msse2 to the CFLAGS but that did not increase the performance any further.
Thanks for you help.
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