Comments on: Technical Notes on O3D

By: Sweet_Home_Improvement

Sweet_Home_Improvement — Sat, 22 Aug 2009 21:16:05 +0000

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By: Celebrity Sunglasses

Celebrity Sunglasses — Thu, 30 Jul 2009 06:14:40 +0000

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By: Todd

Todd — Sat, 04 Jul 2009 21:59:31 +0000

Very cool Ben!

By: Thomas

Thomas — Fri, 08 May 2009 15:00:40 +0000

Keep in mind that Flash ain't GPU accelerated and O3D clearly is.

By: elenzil

elenzil — Tue, 28 Apr 2009 20:54:26 +0000

it seems like O3D + google native would be an awesome combo.
the computation you can do on the GPU is pretty impressive these days (eg calculating julia sets, simple waves etc), but for really crunching data like in say a large gravity or fluid simulation i'm not sure that V8 or tamarin will really satisfy.

on another topic, what's the coolest O3D demo peeps have seen so far ?
has anyone used render targets + environment mapping do do dynamic reflections yet ? all the pieces are sorta just sitting there.

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By: elenzil

elenzil — Thu, 23 Apr 2009 23:43:22 +0000

thanks for taking the time to look at that .as code, zwetan.
i tried cacheAsBitmap as you suggested, but not much change (presuming i used it correctly - just shape.cacheAsBitmap = true ?)

i guess my fundamental take here is that rasterizing 400 rectangles should not be anywhere close to a bottleneck. i've got way more interesting things to do with my programming time than fight that.

compare, for example, to this demo which renders 1000 rotating bump-and-environment-mapped utah teapots (3783 triangles each) at 30 to 40+ FPS on the same exact machine, and barely bumps the CPU at all. and it uses javascript instead of actionscript, and there's no compilation step.

By: zwetan

zwetan — Thu, 23 Apr 2009 11:37:24 +0000

I ran demo under OSX and no problem

but looking at the code, there is room for optimization

use Vector, not Array, this is a real boost in FP10

try also to use cacheAsBitmap, it speed up the rendering

other things to explore:
don't draw the 400 vector graphics on screen, keep them out of the display list,
copy them to a bitmapdata and just display that
(see for ex: http://www.bigspaceship.com/blog/labs/improving... )

By: equex

equex — Thu, 23 Apr 2009 11:13:27 +0000

uh, for gaming i use my crossfire setup at home, no browser needed.

By: Ben Garney

Ben Garney — Thu, 23 Apr 2009 09:49:51 +0000

Good to see you here, Aras.

Yeah – a lot of people have crappy 3d capable hardware (like the intel chips) but they DO have 3d capable hardware. O3D needs to get a path for those chips.