My question is: How can I render a pixel art image with cycles (low resolution) which is ready for use in a game? That means: no border antialiasing, a transparent background, and a real 1:1 pixel ratio (no scaled image) in the end result.

I've already found a few related questions, but none completely answers my question. The closest I've got is this (more or less copied from here): compositor setup The problem is that it still has a white background, which I don't want. When I change the alpha channel of the color in the upper input of the "Mix" node, the whole image gets more transparent, which is not intended, of course.


1 Answer 1


Instead of Mix node use Set Alpha node:

enter image description here

  • $\begingroup$ Great, exactly what I wanted! Still adjustable and everything… But why did the alpha channel of one mix node input affect the whole image? $\endgroup$
    – Ignatiamus
    Oct 3, 2018 at 15:12
  • $\begingroup$ I don't know. For mixing images with alpha use alpha over node. $\endgroup$
    – Crantisz
    Oct 3, 2018 at 15:34

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