From: Matthias H. <ma...@ms...> - 2008-01-07 10:29:07
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On Dec 20, 07 23:43:55 +0100, =?ISO-8859-1?Q?Reimar_D=F6ffinger_ wrote: > Did someone do speed comparisons? In some older versions the dynamic > libs _if_ they were built with -fPIC were around 15% slower on H.264 > decoding (which leads to the next question if the default distro libs > are usually with or without -fPIC...) Mesa was also compiled without -fPIC on i386, and that caused major headaches here. So we did some speed comparisons for Mesa, and differences were negligible or below measurement errors. But the calling sequence in Mesa can differ from libavcodec, so this should be take carefully. Especially with the heavy use of assembler intrinsics an extra register could do wonders. CU & a happy new year Matthias -- Matthias Hopf <mh...@su...>, SuSE R&D, Zimmer 3.2.06, Tel. 74053-715 |