Hi

So, the thing I want to accomplish is to add .png images, compile them and then transform the compiled montrosity (move/scale, etc).

But the thing is, if I “alphaover” the images with some offset, for example:

the image laid over the other cuts off, as the overlay can’t reach outside the dimensions of the underlaying one.

I know I can just:

  • use eg. gimp and combine the images there, but I’d rather have my workflow entirely in blender.
  • add transparent padding for ~billion pixels around the decal as a workaround, but that sounds silly and “bruteforcing” the concept.

How would I go about getting all overlaid images to display in full in such case? I’ve tried different options on the “alpha over” and “color mix” -nodes without results, but entirely possible that I just missed some critical combination.

So, thoughts?

  • Ludrol@szmer.info
    2·
    2 months ago

    So I think the second “alpha over” node like showed in root comment would work. The top link in the node sets the size of the working area so plugging in something in the size of the render region will work. (The scale node is obscured due to my carelessness)

    it’s still padding but not a bilion of pixels as you feared.

    • Malix@sopuli.xyzOP
      2·
      1 month ago

      weird, yesterday I couldn’t get it to work with generated 4k x 4k square of just alpha, but today it does work a charm. Must have been tired and derped something fierce.

      Eitherway, so far, as far as jank solutions go, it seems to be the least jank. Thanks.