Alexander Gavrilov c376878e54 Fix T49187: inconsistent Normal Map node output for backfacing polygons.
There basically are two issues here: in smooth mode (and all non-tangent
normal map types) it doesn't invert the normal for backfacing polys;
on the other hand for flat shaded tangent type it is inverted too soon.

This fix does a brute force correction by checking the backfacing flag.

Reviewers: #cycles, brecht

Reviewed By: #cycles, brecht

Differential Revision: https://developer.blender.org/D2181
2016-08-30 12:48:59 +03:00
2016-08-30 10:43:37 +02:00
2016-08-01 11:02:01 +10:00
2013-12-24 22:57:27 +06:00
2016-07-15 01:28:00 +10:00
2016-07-15 01:26:26 +10:00
2016-02-10 00:26:12 +11:00
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