Toshiba e740 GAPI blit

by **sponge** » Dec 14, 2002 @ 5:25am

[ignorance]
Aren't a large part of the PocketDivX speedups caused by the e740's ability to decode MPEG4 if I recall correctly, right on the Imageon?
[/ignorance]

by **Dan East** » Dec 14, 2002 @ 5:58am

by **sponge** » Dec 14, 2002 @ 6:28am

by **refractor** » Dec 14, 2002 @ 9:44am

by **Kzinti** » Dec 14, 2002 @ 9:59pm

by **Dan East** » Dec 14, 2002 @ 11:49pm

by **Digby** » Dec 16, 2002 @ 2:19am

by **Dan East** » Dec 16, 2002 @ 7:10am

by **randall** » Dec 16, 2002 @ 8:02am

by **Digby** » Dec 16, 2002 @ 11:15am

by **Kzinti** » Dec 20, 2002 @ 11:05pm

by **Guest** » Dec 21, 2002 @ 5:52am

Regarding GDI BitBlt performance on the e740, the only bitmaps accelerated by the ATI W100 (or any other low-power graphics chip) are device-dependent-bitmaps (DDBs). These reside in video memory and are created via CreateCompatibleBitmap. The important thing to note is that there is no way that an application can touch the bits of a DDB once it's been created. This prevents the use of these bitmaps for most games that draw to a back buffer in system memory and then copy the contents to video memory each frame.

I've got benchmarks of the various type of BitBlt/FillRect GDI operations and GAPI memcpy/memsets for a number of devices. I'm currently out of town and don't have access to the results but I can post them next week if anyone is interested.

by **James S** » Dec 22, 2002 @ 3:25am

by **Dan East** » Dec 22, 2002 @ 5:24am

Toshiba e740 GAPI blit

Toshiba e740 GAPI blit

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