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Computer Graphics

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  • $\begingroup$ How often and how much are they in the opposite direction? It could be a math precision error if they are only occasionally inside, by not very much. If they are often the wrong way, it could be that your tangent and bitangent vectors or math is wrong. If it's almost always wrong, it could be due to mixing left and right handedness maybe. $\endgroup$ Commented Dec 12, 2016 at 4:26
  • $\begingroup$ Are you able to share your code? $\endgroup$ Commented Dec 12, 2016 at 23:13