[GEM-dev] [pix_snap]/[pix_sna2tex]

[chris clepper]

pix_snap takes up CPU time waiting for the GPU to finish all rendering
operations and then bring the data from the card to main memory.  This is
one of the least efficient OpenGL operations.  80% CPU at such a small size
seems like a lot though.

On 5/8/07, Roman Haefeli <reduzierer at yahoo.de> wrote:
>
> hello
>
> when i snap the framebuffer using [pix_snap], i get a cpu usage of over
> 80% @ 20fps with dimension 320x240. is that what one would expect?
> the same, but using [pix_snap2tex] doesn't cause any cpu peak at all. of
> course, i'll use [pix_snap2tex] whenever possible, but i'd like to
> record opengl-stuff into a video file. or is there another/more
> optimized method to record gem's output into a videofile?
>
> roman
>
>
>
>
>
>
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