Hello,
> > I don't know what that has to do with xml - it seems > generic that if I > increase the number of objects to render, the framerate > drops. I can see > the same thing with trees (which to my knowledge are not > xml-wrapped > models) - if I increase tree density by a factor 10, I see > my framerate > drop like a rock. 5000 additional models in the scenery > will affect > framerate, quite possibly inversely proportional to their > texture quality > and proportional to the operations required by the relevant > shader - > regardless if that's houses or clouds. With 1.9.1 there wasn't a big difference between placing pure .ac-models and .xml-wrapped models into scenery. Both had the same fps. Now it is different. The same number of .ac-models will give higher fps than the same number of wrapped .xmls. > > The system (as far as my experience goes) isn't > particularly slow in > rendering the clouds once they are in the scene. It is slow > in placing > them into the scene - dramatically slower (a factor 1000 or > so) than with > the standard 3d clouds. If you want to call that 'wrong' is > in the eye of > the beholder - that's how the interface for model placement > from Nasal is > at present. Hmm... I did not have found time for a detailed table of fps comparement, but it seems to me that some of your clouds are decreasing fps more than the default 3d-clouds. It looked different to me at the beginning, but making some videos showed me this. > > That slowdown for sure is generic for the way models > are placed from > Nasal - something appears to be *very* inefficient with > that. I am rather > skeptical if it's to be blamed on the xml wrapper - I see > no supporting > evidence. The dependence on texture type and detail level > suggests to me > that it's about uncompressing and loading textures into the > GPU memory. If I'm right, .xmls and nasal are handeld by the CPU. The Default clouds are mostly done by the GPU. Heiko ------------------------------------------------------------------------------ Colocation vs. Managed Hosting A question and answer guide to determining the best fit for your organization - today and in the future. http://p.sf.net/sfu/internap-sfd2d _______________________________________________ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
