On Sat, Jul 21, 2012 at 10:42 AM, Mathias Fröhlich <mathias.froehl...@gmx.net> wrote: > > Hi, > > On Thursday, July 19, 2012 15:32:01 Tim Moore wrote: >> The depth-pass-only pass is a well known optimization, but the fact it >> is not helping implies that our bottleneck is not in fragment >> processing. I've suspected for years that it lies on the CPU, and have >> been trying to optimize our scene graph a bit... > > It *is* on the cpu. > At least for most of the use cases. Every now and then there is an other limit > that comes up for specific stuff. But we are *mostly* draw limited. The draws > are way too small to be efficient. That is a big problem, but we also have CPU bottlenecks upstream too. > James and I were talking about this some time ago. > I would go even further for the LOD's. In the meantime I have in fgviewer a > PagedLOD whole world database tree running. This is similar to osg's marble > dataset but carefully designed around our tile structure. Using this I think > we can really replace a lot of our fine structured scenery tiles with > something > more croase that is used for tiles more far away. I would really like to see that code! > Drawback with our current codebase: Our integration of the particle systems > need to be rethought as this contains geometry with culling disabled which > makes a pagedlod just never expire. Switching the particle systems off works > pretty good so far. Yikes, I didn't know about that problem.
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