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I added a shader and use 3 image textures which are combined with mix RGB. How to choose the texture I want to paint in the 3d viewport when doing texture painting?

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  • $\begingroup$ Select the image in properties panel when in texture paint node. It will be somewhere there. You may need to select the node in the node editor. Just remember that the image needs to be on a image texture node in the items material. Good luck, BFB $\endgroup$ – Bigfoot Blondy Mar 31 '19 at 11:47
  • $\begingroup$ Thanks a lot, i found it $\endgroup$ – andio Mar 31 '19 at 16:38
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You are needing the Texture Slots tab in the Properties panel in the tool properties. Select the appropriate slot to determine where your paint will go. Here I am using two image textures set to box mapping and one black generated image as a UV mapped stencil between them. enter image description here I used an RGB Color Mix node to combine the two textures with Multiply mix mode, so that the rust adds to the original texture instead of replacing it. enter image description here

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