Hello Andrea, Unfortunately this is a known problem, and is especially difficult in your case because you're tweaking an area that doesn't have many experts around that can offer a careful review.
The idea to go on with a separate project pluggable in OpenJDK is good, perhaps you could consider hosting it within IcedTea to be closer to OpenJDK and/or starting a JEP? I suggest though to not give up yet, I can assure you that there is a lot of interest in what you are doing, even if there's currently a terrible failure in communicating this to you. Cheers, Mario Il 11/nov/2013 09:34 "Andrea Aime" <andrea.a...@geo-solutions.it> ha scritto: > On Mon, Nov 11, 2013 at 9:21 AM, Clemens Eisserer <linuxhi...@gmail.com>wrote: > >> Hi, >> >> One wish regarding pisces came into my mind: >> >> Currently all AA tile generators feed 32x32 coverage tiles to the >> pipelines. >> While this might be a good idea for software-only pipelines due to >> good cache locality, it is a huge issue for at least the xrender >> pipeline. >> Each tile has to be uploaded seperately, which causes context switches >> and GPU stalls - and I can't make use of the shared memory image >> extension which should be quite benefitial for larger coverage >> uploads, >> >> It would be great if this fixed size could be made more dynamically - >> this is an area where I could contribute. >> > > Hi Clemens, > personally I'm on board with this and other changes, yet, the complete > lack of any response from Oracle people is a cold shower. > > As far as I know it's impossible to get the code in without any support > from them, so it seems like even if we started the work again, it would > be destined to failure. > > I still haven't looked in detail, but another approach I was considering > is to develop a improved rasterizer completely outside OpenJDK, > and just add in OpenJDK the bits needed to allow it being plugged in > (e.g., for example, by dropping a JAR and leveraging the usual SPI > mechanism) > > This I hope would break the tension between our desire to improve things > in software rendering, and the need to get Oracle support at every step of > the way > > Cheers > Andrea > > -- > == > Our support, Your Success! Visit http://opensdi.geo-solutions.it for more > information. > == > > Ing. Andrea Aime > @geowolf > Technical Lead > > GeoSolutions S.A.S. > Via Poggio alle Viti 1187 > 55054 Massarosa (LU) > Italy > phone: +39 0584 962313 > fax: +39 0584 1660272 > mob: +39 339 8844549 > > http://www.geo-solutions.it > http://twitter.com/geosolutions_it > > ------------------------------------------------------- >
