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Lukas Stockner d6e769d32e Cycles: Add reflection fix to Bump and Normal Map nodes ...

While changing the shading normal is a great way to add additional detail to a model, there are some problems with it.
One of them is that at grazing angles and/or strong changes to the normal, the reflected ray can end up pointing into the actual geometry, which results in a black spot.

This patch helps avoid this by automatically reducing the strength of the bump/normal map if the reflected direction would end up too shallow or inside the geometry.

Differential Revision: https://developer.blender.org/D2574

2018-07-26 17:00:31 +02:00

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