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PocketMatrix • View topic - Anyone using DirectX
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Anyone using DirectX


Postby Dan East » May 17, 2007 @ 11:41pm

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Postby mm40 » May 18, 2007 @ 3:53am

Anything in an inner loop is fixed point, almost everything else is float for ease of programming. The only things converted to fixed point are after it is deemed a bottleneck. Write first, test second, then rewrite if necessary.
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Postby Cardinal » May 18, 2007 @ 4:35am

So floating point performance on these devices ain't half bad then? I haven't had nearly as much time as I would have liked to really benchmark. I've just started getting into hardcore coding on these things. I VERY much like ARM assembler so I wanna see what I can do with the MMX unit on the Intel PX series of processors.

I have work on the Nintendo DS which is running an ARM9. Did alot of assembler on there.
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Postby mm40 » May 18, 2007 @ 3:24pm

Actually floating point sucks, as Dan East pointed out in the other thread, it depends on how much you use it I guess, if you are doing a few thousand floating point ops per frame then youre probably ok, if youre doing tens of thousands then you will want to do fixed point.
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Postby Presto » May 18, 2007 @ 3:37pm

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Postby Cardinal » May 18, 2007 @ 5:29pm

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Postby Dan East » May 18, 2007 @ 6:55pm

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Postby mm40 » May 18, 2007 @ 6:58pm

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Postby mm40 » May 18, 2007 @ 7:09pm

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Postby Dan East » May 18, 2007 @ 7:10pm

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Postby Cardinal » May 18, 2007 @ 7:24pm

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