Comments on: Development Diary – Irrlicht and Flite TTS on the iPhone http://www.codedojo.com/?p=412 Game development, technology, and Japan. Fri, 03 Sep 2010 22:47:34 +0000 hourly 1 http://wordpress.org/?v=3.0.1 By: jetro http://www.codedojo.com/?p=412&cpage=1#comment-24677 jetro Mon, 23 Nov 2009 19:04:31 +0000 http://www.codedojo.com/?p=412#comment-24677 Oh, if you want to go and try some optimization, here's a nice reference to get started: http://gamesfromwithin.com/360idev-cranking-up-floating-point-performance-to-11 Oh, if you want to go and try some optimization, here’s a nice reference to get started:

http://gamesfromwithin.com/360idev-cranking-up-floating-point-performance-to-11

]]> By: jetro http://www.codedojo.com/?p=412&cpage=1#comment-24670 jetro Mon, 23 Nov 2009 12:55:44 +0000 http://www.codedojo.com/?p=412#comment-24670 We're using Irrlicht on iPhone in this: http://stairdismount.com/ Like you say, the slowness is probably something which just comes from running skinned stuff. We are just animating position/rotation of nodes, with little exception of some dynamically generated effects (which have quite low triangle counts though). Even though we have currently a bit too much draw calls (from many separate nodes + custom drawing), I think the speed is quite reasonable with a scene of few thousand triangles running 30-60 fps depending on type of device, even with the fullscreen vignetting layer. That slows down a bit when the physics are enabled though, but that's a different story. If you absolutely need skinning or vertex animation, I think optimizing that part with VFP (older devices) and NEON (3GS) could give quite a clear speed boost... We’re using Irrlicht on iPhone in this:
http://stairdismount.com/

Like you say, the slowness is probably something which just comes from running skinned stuff. We are just animating position/rotation of nodes, with little exception of some dynamically generated effects (which have quite low triangle counts though).

Even though we have currently a bit too much draw calls (from many separate nodes + custom drawing), I think the speed is quite reasonable with a scene of few thousand triangles running 30-60 fps depending on type of device, even with the fullscreen vignetting layer. That slows down a bit when the physics are enabled though, but that’s a different story.

If you absolutely need skinning or vertex animation, I think optimizing that part with VFP (older devices) and NEON (3GS) could give quite a clear speed boost…

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