[PD] Arbitrary meshes/drawlines in GEM?

[cyrille henry]

hello,

for now, i thik the most optimized solution is to :
use a tabdump extern to send the data to a pix_set object
use a shader to distord a mesh_square/mesh_line geometry according to this texture

I have plan to add a message to pix_set object to read directlly the table to remove the list bottleneck (and an external dependency)
I would also love to have time to include this functionality to mesh_square...


But if you have only few thousand line to draw, [curve 2] object (with a [res 2< message) and a loop will be fine on any recent computer.
(or GEMglBegin etc)

cheers
c



Le 05/08/2016 à 18:56, Daniel Iglesia a écrit :
> I have (large, e.g. size  >512) quickly-varying arrays of data in Pd that I'd like to turn into vertices/lines in GEM. How do I either
>
> 1) draw a large mesh (such as with jit.gl.mesh) without having to, for example, specify a [polygon] with 512 inlets
>
> or
>
> 2) send individual drawline commands to GEM (without having to, for example, use GEMglBegin with 512 GEMglVertex3f objects in a row), e.g. [drawline x y z x y z (
>
> (the only other idea I have is to use a vertex shader and send in lists of point data as a parameter to that, which hopefully doesn't have a bottleneck)
>
> thanks for any advice, Dan
>
>
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