Thanks peter

that looks promising and might fit to the rest of my patch.

best,

-j-

Am 27.04.2015 um 09:23 schrieb Peter Venus news@petervenus.de:

Hello

Another possibility to get textures from a framebuffer back into the pix-domain(so that you can apply pix_...-objects to the texture) is described in the help-browser: Gem/examples/04.pix/26.framebuffer_readback.pd

ragrds, peter

Am 26.04.15 um 18:40 schrieb Cyrille Henry:

...

helo,

i think you're after pix_coordinate

cheers c

Le 26/04/2015 18:24, hi a écrit :

...

Dear list,

is there any way to use (an object like) [pix_crop] for textures out of [gemframebuffer]? I want to render a [pix_video] stream into a texture of a framebuffer and crop it afterwards dynamically according to my different mappings. I use windows7 + pd-extended, gem 93.3 at the moment

thanks

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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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