Joseph J. Strout dixit, le 10/02/05 à 16:22 :
At 11:15 PM +0100 2/10/05, Eirik Karlsen wrote:
>Also note that there is a huge difference in
speed depending on colordepth,
>obviously 32bit is the slowest.
That's not obvious to me. Assuming your
monitor is set to 32-bit color, then drawing a
32-bit picture can be done directly, while
anything else requires remapping of each pixel.
Of course this is offset by having more source
data to push around.
>A quick test showed that at
>32bit I got 41 frames/sec
>8bit I got 122 frames/sec
>1bit I got 583 frames/sec
Try it with g.UseOldRenderer=true, and include 16-bit color in the test.
When pictures are used for unseen offscreen
calculations, and if a smaller depth is enough,
using a smaller depth should be faster ?
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