W100 ATI chip documentation , how use this chip ?

by **PhilHP** » Jul 10, 2003 @ 1:48pm

Hello,

i have found an old message on pocketmatrix forum (25 sep 2002) , where somebody ask how get ATI w100 documentation. but since date nothing.
me too i would like use this chip in my program.

For example Pocketdivx use this chip on code source but i dont have found some specific files like : <w100api.h>

i would like to know if somebody have receive any documentations from ATI ?
and how to use this chip.

its a good idee to add graphic chip on Toshiba pocket PC, but not if nobody can use this ...

Thanks in advance,

Philippe

by **Digby** » Jul 10, 2003 @ 4:05pm

by **Sergey Chaban** » Jul 10, 2003 @ 4:46pm

by **StephC** » Jul 10, 2003 @ 4:48pm

by **Sergey Chaban** » Jul 10, 2003 @ 5:13pm

by **Guest** » Jul 10, 2003 @ 5:25pm

by **Sergey Chaban** » Jul 10, 2003 @ 5:46pm

Relatively small speedup (1-2 extra FPS in a third-person view tunnelware-type 3D game), but still worth it considering that there is very little additional code needed to support this API.
It seems that speedup could be better if specific write order is used when writing to offscreen surface memory, i.e. making use of chip's write-coalescing.

by **Kzinti** » Jul 10, 2003 @ 6:01pm

1-2 extra FPS out of how many?

by **Sergey Chaban** » Jul 10, 2003 @ 6:04pm

There is increase from 18 to 20 FPS.

by **Sergey Chaban** » Jul 10, 2003 @ 6:07pm

Oh, and jump from 18 to 20 may sound like a lot, but for comparison XScale-optimizing compiler gives better speedup (on e740).

by **Kzinti** » Jul 10, 2003 @ 6:22pm

Well a 11% speed improvment is always nice.

W100 ATI chip documentation , how use this chip ?

W100 ATI chip documentation , how use this chip ?

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