On Mon, Nov 11, 2013 at 9:21 AM, Clemens Eisserer <[email protected]>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 -------------------------------------------------------
