performace issues

[alex25]

track actually loads in the track editor

Track editor is based on the old implementation hasn't been synced with vdrift code. No idea about its performance limits.

really?! you thought i didn't know that? amazing... if it makes you feel better even blender had problems dealing with this track. it's a pity because it looks like a really beautiful one.

did one lap at spa2008 with profiling, this is what it says:

ai: 0.0126807 %
car-update: 1.2467 %
physics: 4.49186 %
render: 83.9912 %
scenegraph: 2.31186 %

this is probably not that informative because things happen only when there are suddenly a lot of objects so i'm pretty sure it is the scene graph.

i just tried another run quitting right after the first turn:

ai: 0.00588349 %
car-update: 0.579721 %
physics: 2.23063 %
render: 66.2563 %
scenegraph: 1.37874 %

not sure where 30% went, maybe it was all the freezing.

anyway, so what happened to the patches you had for bullet to speed up the scenegraph? i never saw them making it into bullet upstream and i remember a message you posted (which i can't find right now) where you said that the time difference between the two was pretty big.

--alex--