[PD] GEM question

IOhannes m zmölnig zmoelnig at iem.at
Sun Jul 21 21:28:06 CEST 2013

On 07/21/13 14:49, Jack wrote:
> You have two possibilities to do that :
> 1) Use [pix_snap] to capture a part of the frame buffer and then apply
> [pix_scanline]. This method is the simplest but could be slow for your
> hardware.
> 2) Use [gemframebuffer] to render off-screen and convert this
> framebuffer into texture. Then use shaders (GLSL) to perform a
> [pix_scanline] like. Try this method if the first is too slow.

btw, you might want to use [gemframebuffer] for method #1 as well, so
the to-be-processed scene does not get in the way of the finally
displayed scene.


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