GapiDraw MFC benchmark

by **gersen** » May 30, 2003 @ 3:56pm

iPAQ 3950: 100 sprites portrait, 250 sprites landscape

landscape is 2.5 the speed of portrait... very funny

!

by **Johan** » May 30, 2003 @ 4:08pm

gersen: That's basically due to the way the sprite bitmap is stored. When row2 [x=0, y=1] == row1[x=0, y=0] + 16 bytes, the cache will store two rows of sprite information with one memory read. If I had used a 64x64 pixel sprite the performance in landscape and portrait mode would be identical on all devices.

The reason the performance difference is less on the 548 is that it has a smaller read cache that the ARM CPU.

by **gersen** » May 30, 2003 @ 5:05pm

GapiDraw MFC benchmark

GapiDraw MFC benchmark

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