Hi Laurens, Just working my way through submissions. The patent mess with S3TC are a show blocker until the patent expires or there is public declaration from those marshalling S3RTC that the code does not infringe.
If there are parts of the submission that won't infringe could you separate them out? Perhaps you could clone the OSG repostory on github and then create a patch with the changes without the code that is likely to be in the clear and on with code that would need to checked against the scope of the patent? Cheers, Robert. On 17 March 2016 at 12:31, Voerman, L. <[email protected]> wrote: > Hi Jannik, > > thanks for your question, basically I have no idea what the answer should > be. The rotate block and retrieve value functions do interpret the content > of the compressed blocks, and therefore might be prohibited. > Any advise on the legality would be appreciated, as I cannot fully > understand a patent covering the possibility to decode an image. > Even though I wrote the code based on publicy available descriptions of the > format, I forgot that the format itself could be patented. > I do not intend to expose all osg users to patent fee claims - so the > implementation might need to be disabled until the patent expires, the page > you link says: Estimated expiry: Oct 2, 2017 > > Regards, Laurens. > > ps. > 1> I suppose copying compressed blocks alligned to it's footprint should be > fine, as the content of the block is not interpreted and the idea of > grouping compressed pixels in blocks is not patented. > > 2> would an conditional compile like > #ifdef THIS_PATENT_HAS_EXPIRED > be sufficient to protect the osg community against claims? > the most convenient place to store the code for me is still in the osg > repository, and it might be usefull to describe the reason for not compiling > it into the osg. > > > > On Thu, Mar 17, 2016 at 11:58 AM, Jannik Heller <[email protected]> > wrote: >> >> Hi Laurens, >> >> Great changes, sounds like very useful features. Though, perhaps the >> addition to "get pixels from dxtc compressed textures", if it is what I >> think it is, should wait until the S3TC patent expires? >> http://www.patentcountdown.org/ >> >> ------------------ >> Read this topic online here: >> http://forum.openscenegraph.org/viewtopic.php?p=66554#66554 >> >> >> >> >> >> _______________________________________________ >> osg-submissions mailing list >> [email protected] >> >> http://lists.openscenegraph.org/listinfo.cgi/osg-submissions-openscenegraph.org > > > > _______________________________________________ > osg-submissions mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-submissions-openscenegraph.org > _______________________________________________ osg-submissions mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-submissions-openscenegraph.org
