On Wed, Aug 25, 2010 at 10:00 PM, Altair Sythos <syt...@gmail.com> wrote: > i'm testing in RL office (not or a viewer) JasPer decoder for JPG2000 > images, after a short test with openjpeg2000 from EPFL we have tested > last 3 days JasPer (only a POC apps to do some bench), we must do a lot > of work too, but this is a lil question... anybody here around never > tried it as alternative to OpenJPEG/KDU in a viewer?
I'm not aware of anyone publishing results for such a test, but if you have the time it would be interesting reading. Some things to keep in mind. OpenJpeg has patches floating around on its ML against 1.3 that reports have claimed up to 40% speed increase in places due to unrolling the inner loops so finding them and testing would be good. Also in SL usage, (please correct me if i am wrong) when the viewer ups the resolution (using discard levels) openjpeg needs to redecode the entire image, KDU does not, and the meta data extraction for OpenJpeg is also expensive causing a decode, which could probably be fixed. Also we have a good mix of 3,4 and more layer textures here in SL, so your RL office comparision may not accuratly reflect performance within SL, but its still good stuff. Best regards Robin _______________________________________________ Policies and (un)subscribe information available here: http://wiki.secondlife.com/wiki/OpenSource-Dev Please read the policies before posting to keep unmoderated posting privileges
