I'm bumping my head into the wall trying to glue textures together using jit.gl.pix. I have 3 1x24 textures that I want to combine into 1 3x24 texture. (In my actual app I need to combine 19 textures)

For my particular use I need it done on the GPU and I can't do it on screen/in the render window with multiple videoplanes.

Below's what I 've been trying. Any ideas?

Hi there,
I'm bumping my head into the wall trying to glue textures together using jit.gl.pix. I have 3 1x24 textures that I want to combine into 1 3x24 texture. (In my actual app I need to combine 19 textures)

For my particular use I need it done on the GPU and I can't do it on screen/in the render window with multiple videoplanes.  

Below's what I 've been trying. Any ideas?


jit-gl-pix-texture-glueingcombining

Oh yes, Im also getting a GLSL error that I don't understand:

-- START GLSL INFO LOG: fp --
ERROR: 0:127: 'switch' : Reserved word. 
ERROR: 0:127: 'switch' : syntax error syntax error
-- END GLSL INFO LOG: fp --
jit.gl.shader: GLSL program failed to compile.
-- START GLSL INFO LOG: fp --
ERROR: 0:127: 'switch' : Reserved word. 
ERROR: 0:127: 'switch' : syntax error syntax error
-- END GLSL INFO LOG: fp --
jit.gl.shader: GLSL program failed to compile.



i gave it a try: somehow i have the feeling its not the most efficient way :-) but its working...

Great, tanx! Now let's test it in the big patch...

Bummer... jit.gl.pix can only have up to 8 inputs, so for 19 I have to create 3 submatrices and then glue those together. Should be able to work that out now.

There's a thing I don't understand inside the gen objects:

Why the * 2 - 1? The outputs 0 and 1 from && remain 0 and 1 after the calculation. Though if I remove it the glueing doesn't work as expected. What am I missing here?

There's a thing I don't understand inside the gen objects: 

Why the * 2 - 1? The outputs 0 and 1 from && remain 0 and 1 after the calculation. Though if I remove it the glueing doesn't work as expected. What am I missing here?


Here it is adapted for 19 inputs, in 2 steps. Perhaps useful for someone sometime. I optimized out some superfluous checks from Tobias' original solution too.

(for some reason I can't post my compressed code here, I just get directed to a blank page...)

Any chance in uploading that patch again DTR? Thanks!

Sure. Posting this particular copy-compressed code on the forum still seems buggy so I attached a zip.

jit.gl.pix texture glueing/combining