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Mikki Miles
Posts: 384
Topics: 28
Registered: ‎10-05-2009
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Feedback loop detected (Blender)

can somebody please point me the right direction?

While trying to bake an AO, I receive the error "feedback loop detected". Where do I have to search for the mistake I apparently made, I have no clue???

Gaia Clary
Posts: 1,621
Registered: ‎06-30-2009

Re: Feedback loop detected (Blender)

[ Edited ]

Reply to Mikki Miles - view message

That means:

 

  1. you have at least one texture defined in your texture stack which uses an image.
  2. That image is also assigned as image texture (aka "face assigned image" or "face texture") to your model.

The baker always drops the final output of the bake to face textures. So when a feedback loop is detected, that means:  the face texture is used as input for the bake as well as for final output, which can lead to desaster (feedback loop). Earlier versions of Blender ignored the fact that they overwrite their own input data and continued with the bake process. This has been changed in Blender 2.64.

In principle feedback loops could be accepted in a few scenarios, but these exceptions have not been implemented (yet) in Blender.

I explain feedback loops in this tutorial (however the tutoriual is not only about feedback loops)

Here : http://blog.machinimatrix.org/materials-and-textures/

Or just watch the video:

the mesh weaver
Mikki Miles
Posts: 384
Topics: 28
Registered: ‎10-05-2009
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Re: Feedback loop detected (Blender)

Reply to Gaia Clary - view message