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Old 07-18-10, 07:23 AM   #307
Lysius
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Join Date: Oct 2008
Posts: 98
Default Re: VDPAU testing tool

I tested on my new GTX 460 and the performance for the Mixer tests seems to be far too low compared to other results I have seen here. The decoding part seems to be OK (doesn't seem to vary much between GPUs), but is likely not enough for the announced 3D movies capability of the GTX 460 (should need to decode two movies simultaneously).

The mixer part should be dependent mainly on shader power but shows only a tiny fraction of the performance my 8800 GTS 512 (G92) showed.

Code:
qvdpautest 0.5.1
Intel(R) Core(TM)2 Duo CPU     E6750  @ 2.66GHz
NVIDIA GPU GeForce GTX 460 (GF104) at PCI:1:0:0 (GPU-0)

VDPAU API version : 1
VDPAU implementation : NVIDIA VDPAU Driver Shared Library  256.35  Wed Jun 16 19:14:02 PDT 2010

SURFACE GET BITS: 972.755 M/s
SURFACE PUT BITS: 1091.17 M/s

MPEG DECODING (1920x1080): 106 frames/s
MPEG DECODING (1280x720): 238 frames/s
H264 DECODING (1920x1080): 65 frames/s
H264 DECODING (1280x720): 138 frames/s
VC1 DECODING (1440x1080): 82 frames/s
MPEG4 DECODING (1920x1080): 71 frames/s

MIXER WEAVE (1920x1080): 253 frames/s
MIXER BOB (1920x1080): 354 fields/s
MIXER TEMPORAL (1920x1080): 165 fields/s
MIXER TEMPORAL + IVTC (1920x1080): 146 fields/s
MIXER TEMPORAL + SKIP_CHROMA (1920x1080): 207 fields/s
MIXER TEMPORAL_SPATIAL (1920x1080): 86 fields/s
MIXER TEMPORAL_SPATIAL + IVTC (1920x1080): 78 fields/s
MIXER TEMPORAL_SPATIAL + SKIP_CHROMA (1920x1080): 96 fields/s
MIXER TEMPORAL_SPATIAL (720x576 video to 1920x1080 display): 242 fields/s
MIXER TEMPORAL_SPATIAL + HQSCALING (720x576 video to 1920x1080 display): 159 fields/s

MULTITHREADED MPEG DECODING (1920x1080): 107 frames/s
MULTITHREADED MIXER TEMPORAL (1920x1080): 159 fields/s
I guess the driver needs some optimization in this part.
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