On Wed, Sep 22, 2010 at 4:01 AM, Sheet Spotter <sheet.spot...@gmail.com> wrote: > I would love to see Robin's test harness. I would also love to see the > images that failed with v2.
For the record I cannot give you (or anyone else) the images that failed, I was testing against a random selection of images pulled from the texture cache (and yes i know how to get a complete image out the cache) i wanted it to be a fair cross section of real SL textures not contrived test cases. I can probably people on an individual basis UUIDs of failed images but i'm afraid you will have to obtain the images yourselves I can't just go around distributing SL textures that are not mine. Maybe we can make a collection of test textures that we (the collective we) own, if an individual copyright holder has textures they can donate we can build a collection of test textures that can be used for metrics now and in the future. > > I started diving into the v2 branch of OpenJPEG a few days ago, after > research JPEG 2000 for a week. Tackling the bugs from the failed images > might be a good way to become more familiar with the source code. I can get full back traces to the offending lines which will be some help. > > I posted a very minor patch correcting some simple build problems with the > DLL version of OpenJPEG V2. > http://code.google.com/p/openjpeg/issues/detail?id=40 Yes i had to fix a few issues to get the dll to build, nothing major. > Thank you for publishing your results, Robin. They are encouraging me to > continue looking at OpenJPEG v2. Thanks OJP V2 looks like its worth the effort, so far using it with the viewer is failing badly. Encode now i've stopped it crashing is failing causing a "bake loop of hell" which consumes massive amounts of CPU time and spams the LL servers with bakes, so bad all around. As for the test harness, Yes let me tidy it slightly and I'll publish it, its really simple but i'm lazily working around one issue with error reporting currently. I also hopefully will have some new data tonight myself, looks like my results are artificially slow, BUT there remains a massive difference between KDU and openjpg, possibly worse than the x4 data i obtained, maybe in the order of x16-x20 slower but i need to rerun all the tests. This could also explain why SSE was showing odd results. 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
