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In Gimp I've got two layers with identically images with text in middle grey in the foreground on a black background. The lower layers's mode is set to 'normal' while the higher one's is set to 'addition'.

Moving one layer against the other leads to the effect, that those image parts alter to light grey where the middle greys overlap.

moved image on two layers

How can I achieve this behaviour in Blender?

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  • $\begingroup$ are you looking for a material that uses your two images or do you want overlapping meshes to produce the same result? For the first one use an Add Shader $\endgroup$ – rob Aug 22 at 10:55
  • $\begingroup$ Whether I use textures or overlapping meshes, I don't care. It is important that I can animate the images separately to create "living" mixes. $\endgroup$ – Leo Freitag Aug 22 at 18:33
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Edit: Ok it looks like it's not what you're looking for, you want 2 different planes and I give a solution for one plane:

You could simply mix your 2 pictures in a Color > MixRGB node (set on Mix):

enter image description here

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  • $\begingroup$ I'd like to put my images each on a plane to later move them separately. Where did you put your images on? $\endgroup$ – Leo Freitag Aug 22 at 14:16
  • $\begingroup$ oh ok I thought you wanted both your pictures to be mixed on the same plane. In that case you need another material... $\endgroup$ – moonboots Aug 22 at 14:28

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