Re: [Isugamedev-midworld] did you know...

[Chad A. <ae...@vr...>]

Honestly, I don't think that comes anywhere close to being a performance 
bottleneck right now.  In today's hardware, 10,000 polygons is simply 
nothing.  A GeForce 2 can pump 25 million polys per second.  That's 
416,666 per frame.

According to the profiler, we still spend a very large chunk of time 
doing collision detection.  I bet we would get large speed-ups doing the 
following two things:

1) distance culling of objects so we don't draw things that are far away
2) a colldet algorithm that isn't O(n^2).  we could do some sort of mass 
culling or at least a sweep test.

Honestly, I think we would get a decent speed-up (although last time I 
ran the profiler, we only spent 20% of our time in the draw() function 
on *MY* computer) simply replacing OpenSG with our own renderer.  OpenSG 
is rather threaded, and the cost of context switches isn't cheap.  In 
fact, I plan to add support for unthreaded Audiere to see if it helps 
improve the framerate.


Josh Brown wrote:
> that our bullet casing has 100 polys in it, I figure when we are running 
> through the 3 turrets at the begining of the game that there are around 
> 100 casing sitting on the ground that a wopping 10000 polys that should 
> only be 600polys (at the most and probably only 300).  Anyway this is 
> defenetially a performance hit that we should have caught earlier.
> 
> J
> 
> 
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