I am working on (or rather designing without access to Blender) a material setup to make a texture tileable (see here: http://blenderartists.org/forum/showthread.php?372297-Addon-WIP-Automatic-materials-from-textures-in-Cycles/page3). I basically need to mix a texture with a copy of itself moved slightly. (The factor comes from a texture) It can't be done deterministically without having two image nodes, because I need two separate vectors to have two separate images. What I would like to do is to have a per-ray random number, that will let me alternate between the two vectors, thus removing the need to have two images (it is not a huge burden in theory, but when I need to have all texture maps doubled, it becomes a complicating factor.). Does Blender have such a feature?

  • $\begingroup$ You mean per-ray random number like a noise texture? $\endgroup$ Jul 14, 2015 at 10:57
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    $\begingroup$ I just asked a similar question here. So far I haven't gotten anything. $\endgroup$
    – PGmath
    Jul 14, 2015 at 13:45
  • $\begingroup$ Jerryno: No, I don't mean a noise texture. What I want is to have a different value for every ray, even if it hits the same pixel. $\endgroup$
    – Mörkö
    Jul 15, 2015 at 9:04
  • $\begingroup$ PGmath: What should I do? Close the question? I am a total noob stackexchange-wise. $\endgroup$
    – Mörkö
    Jul 15, 2015 at 9:06


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