Doom9's Forum - View Single Post - Intel QuickSync Decoder - HW accelerated FFDShow decoder with video processing

nevcairiel · 5th September 2011, 20:57

The main problem here is actually copying stuff back from the GPU memory to the CPU/System memory, which only NVIDIA seems to have really managed to optimize properly for CUDA. Its not a task a game needs, which is why AMD never really cared to invest in it (and therefor is really slow with it). Intel doesn't seem to get that much performance either on the GPU -> CPU copys.

Its probably true that drivers are holding back the true potential of the current and next gen hardware.

5th September 2011, 20:57	#14 \| Link
nevcairiel Registered Developer Join Date: Mar 2010 Location: Hamburg/Germany Posts: 10,346	The main problem here is actually copying stuff back from the GPU memory to the CPU/System memory, which only NVIDIA seems to have really managed to optimize properly for CUDA. Its not a task a game needs, which is why AMD never really cared to invest in it (and therefor is really slow with it). Intel doesn't seem to get that much performance either on the GPU -> CPU copys. Its probably true that drivers are holding back the true potential of the current and next gen hardware. __________________ LAV Filters - open source ffmpeg based media splitter and decoders Last edited by nevcairiel; 5th September 2011 at 21:02.