[Bf-blender-cvs] [9db7c3db089] temp-lineart-contained: Fix T86730: LineArt: keep contour when there's perpendicular faces.

[YimingWu]

Commit: 9db7c3db08997374f6ba5a40d6f135b75c41e6f0
Author: YimingWu
Date:   Sat Mar 20 13:35:13 2021 +0800
Branches: temp-lineart-contained
https://developer.blender.org/rB9db7c3db08997374f6ba5a40d6f135b75c41e6f0

Fix T86730: LineArt: keep contour when there's perpendicular faces.

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M	source/blender/gpencil_modifiers/intern/lineart/lineart_cpu.c

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diff --git a/source/blender/gpencil_modifiers/intern/lineart/lineart_cpu.c b/source/blender/gpencil_modifiers/intern/lineart/lineart_cpu.c
index 7d79ce46c1a..2587b3cd8ea 100644
--- a/source/blender/gpencil_modifiers/intern/lineart/lineart_cpu.c
+++ b/source/blender/gpencil_modifiers/intern/lineart/lineart_cpu.c
@@ -1400,7 +1400,7 @@ static char lineart_identify_feature_line(LineartRenderBuffer *rb,
   dot_1 = dot_v3v3_db(view_vector, rt1->gn);
   dot_2 = dot_v3v3_db(view_vector, rt2->gn);
 
-  if ((result = dot_1 * dot_2) < 0 && (dot_1 + dot_2)) {
+  if ((result = dot_1 * dot_2) <= 0 && (dot_1 + dot_2)) {
     return LRT_EDGE_FLAG_CONTOUR;
   }