[PD] Iterative processes on textures in GEM

IOhannes m zmoelnig zmoelnig at iem.at
Thu Jul 15 10:09:11 CEST 2004

thewade wrote:
> Hello All!
> I want to perform an iterative process to a texture in GEM.
> Is there a delwrite~ type object for GEM, something that
> would hold a snapshot of a texture and emit copies of what
> ever texture was last recieved on bangs?

a) are you sure you are talking about textures - as opposed to 
pixel-images ?
a pixel-image (or just image,...) is an image-data representation in 
main-memory. this is, what almost all [pix_-objects work on.
a texture is the image-data uploaded to the openGL-server (in most 
cases: your gfx-card); there are very view operations you can do on 
textures, as there is no direct access to that data any more (well, 
modern gfx-cards would support pixel-fx that are executed on the GPU, 
but Gem does not yet)

b) supposed you are talking about images: the object that does exactly 
what you are describing is [pix_buf], a buffer for images. (can either 
be banged or emit a copy of the image each render-cycle automatically 
(auto 1).

c) if you want to do feedbacks, you should also have a look at 
[pix_buffer] (something completely different!), [pix_buffer_read] and 


More information about the Pd-list mailing list