[PD] [pix_crop] for texture from [gemframebuffer]

[Peter Venus]

Hello

Iohannes is right.
The example i pointed out consumes quite some cpu-power.
but: in the help-browser you´ll find another example, that takes the 
texture id of a framebuffer and allows to "crop" the texture. in this 
example, the work is done by the gpu with the help of glsl-shaders.

Gem/examples/12.multi_screen_projection/02.nfp-help

regards peter

Am 27.04.15 um 23:33 schrieb IOhannes m zmölnig:
> On 04/27/2015 11:00 PM, hi wrote:
>> Thanks peter
>>
>> that looks promising and might fit to the rest of my patch.
>>
>
> but keep in mind that the texture->pix transfer is rather costy in terms
> of CPU (well, actually in terms of transfer time), whereas doing
> texture-only operations (e.g. using [pix_coordinate]) will be *very fast*.
>
> gfnmsdr
> IOhannes
>
>
>
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