Perhaps 2048 hits a limit on your hardware and it falls back to software. You don't need to scale up to a power of two for the capture though since pix_snap2tex uses subtexturing or rectangle textures when available. Even at powers of two the 2048x768 is 2048x1024 which is the exact same number of pixels as the two 1024x1024.
cgc
On 8/19/06, Erich Berger <eb@randomseed.org> wrote:
> exactly, i work at the moment for a project with 2048*768 (2 screens).
> to be able to make fullscreen motionblur i need to snap 2048*2048
> which puts cpu to 98%.
>
> anyway i found a workaround for the workaround which delivers a
> good result for just 10% cpu; i compose the fullscreen motionblur
> out of 2* 1024*1024 snaps, textured on 2 squares.
i forgot to mention that i also had to scale down the gemwin to
1600 * 600 for the 10% cpu
e
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