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I'm trying to bake the earth's interior procedural texture, but it says more than 3 hours remaining time. I'm baking it to a 4k image.

Bake Type -> Diffuse

Contributions -> Only color

enter image description here

Does someone know why?

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    $\begingroup$ maybe the sampling is very high? $\endgroup$
    – moonboots
    Jan 27 at 19:39
  • $\begingroup$ thank you... yeah I decreased the samples to 20 and now it bakes it in a few seconds but I get a black image $\endgroup$
    – Miguel
    Jan 27 at 19:49
  • $\begingroup$ Flip faces is not the problem, lighting shouldn't be a problem as I'm not baking direct and indirect lighting, no intersecting objects... What could I be doing wrong? $\endgroup$
    – Miguel
    Jan 27 at 20:09
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    $\begingroup$ Since you have plugged in the Mix node directly into the Material's output slot which makes Blender use an Emission node internally, I would use the Bake Type Emit with 128 samples (or so). This bakes fine for me. $\endgroup$
    – Blunder
    Jan 27 at 20:12

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You need to create the same Image Texture in both the 2 materials of your object and keep them selected in order to bake these materials. Also you need to have a shader before the Output in your material called concentric circles. The length of the bake operation will next depend on the size of your Image Texture and on the Render Max Samples. It's pretty fast with a 1024 px image in my case (of course if it's 4096 it will be 16 times longer).

enter image description here

Result:

enter image description here

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