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I have created an object and I have assigned a bunch of materials, each with different diffuse colors (for use in dDo) to different parts of the model. What I can't figure out is why when I bake my Ambient Occlusion map I am getting color information in my AO Map. Clear is the only item that I have checked in the Bake Settings. I am also getting the same behavior when I export my UV layout. I don't think I have ever seen this before and I am totally stumped. I don't have any vertex colors on the model. I have no textures in the scene either as I removed them by holding down Shift and unlinking the datablock for my texture bakes. I have cleared all those out and restarted Blender. All I have is my model and a whole bunch of materials with different diffuse colors, that I have assigned to different parts of the mesh. What would be causing such a thing to happen?

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In BI the diffuse color is used to color AO output.

One way to avoid this is to enable Normalized in the bake settings:

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  • $\begingroup$ Thank you! That definitely solved the AO map problem having color information. I am still continuing to look for a solution to eliminate color information for the UV Layout map since I know of no way to alter settings there. $\endgroup$
    – Bryson Jack
    Commented Dec 21, 2014 at 23:24
  • $\begingroup$ @BrysonJack Hm.. I can't think of anything besides I quick python script to set all the diffuse colors to white (either running on a backup .blend or storing the values in an array for setting them back later). If that's not acceptable, does desaturating the UV map work well enough? $\endgroup$
    – gandalf3
    Commented Dec 22, 2014 at 0:56
  • $\begingroup$ Well, if Blender isn't misbehaving, or I didn't accidentally change a setting somewhere and that is the normal behavior then I will have to come up with some kind of workaround. I really appreciate your help gandalf3. $\endgroup$
    – Bryson Jack
    Commented Dec 22, 2014 at 17:27

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