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I've been using Blender for a few months to make the models for a game (actual game engine is Unity Free). I'm new to Blender and 3D modelling in general, so please be patient with me if I'm doing something stupid or I use the wrong terminology.

Anyways, I got the Blender 2.71 testbuild 2 and I've been using it for baking in my Cycles materials for my game. It's been working pretty good, but for one of my models it isn't working. I go and press "Bake" with bake type set to "Combined" and I wait there for an hour or so and instead of baking the model in full color (like it normally does), the UV's are all black (see "combined bake.png"). Am I doing something wrong here? (I've uploaded my .blend file if anyone wants to see it.)

Also, this is how I normally do cycles baking (this has worked for my other models): First, I go into edit mode and do a Smart UV project. Then I go into one of my materials and open up the node editor. I add a Texture Coordinate node. Then I add an Image Texture node and set the file to whichever file I want to bake to. I then take the UV from the Texture Coordinate and put it into the Vector node in the Image Texture. I repeat the process for each of the object's materials. Then I go to Render>Bake and press Bake with the type set to combined bake. This normally does work for my other models. The only thing different with this one is that there is a crystal thing hovering over the object I'm baking. The crystal has a strong emission shader. Is there anything wrong here?

I'm using 1000 samples if anyone wants to know.

(Note: I tried this on the Blender 2.71 RC1 from http://ftp.nluug.nl/pub/graphics/ble...e/Blender2.71/ that just came out - still no luck.)

rendered.png: Rendered image using 1000 samples.

combined bake.png enter image description here

full file.blend This my blend file that I'm using for this model.

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  • $\begingroup$ Here is the same question on blenderartists.org: blenderartists.org/forum/…. Sorry for cross-posting, it's just that I'm afraid my question isn't getting much attention there. $\endgroup$ – user Jun 16 '14 at 14:30
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    $\begingroup$ Did you try recalculating the normals (Ctrl-N in Edit Mode)? That sometimes fixes it. $\endgroup$ – CharlesL Jun 16 '14 at 15:22
  • $\begingroup$ @CharlesL Thank you! Now the combined bake is working properly. I felt like was missing something simple. $\endgroup$ – user Jun 16 '14 at 17:33
  • $\begingroup$ @CharlesL Feel free to add that as an answer :) $\endgroup$ – gandalf3 Jun 16 '14 at 20:17
  • $\begingroup$ @gandalf3 done :D $\endgroup$ – CharlesL Jun 16 '14 at 20:53
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You need to recalculate the normals of the object (Edit Mode > CtrlN).

If you don't, the normals will all face inward (where there is no light).

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