[Bf-blender-cvs] [fdce78c9362] blender2.8: Armature: Fix outline jitter in orthographic mode

[Clément Foucault]

Commit: fdce78c9362a52086bd3d8591b5013cfaf5196f2
Author: Clément Foucault
Date:   Tue Aug 21 17:35:02 2018 +0200
Branches: blender2.8
https://developer.blender.org/rBfdce78c9362a52086bd3d8591b5013cfaf5196f2

Armature: Fix outline jitter in orthographic mode

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M	source/blender/draw/modes/shaders/armature_shape_outline_geom.glsl

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diff --git a/source/blender/draw/modes/shaders/armature_shape_outline_geom.glsl b/source/blender/draw/modes/shaders/armature_shape_outline_geom.glsl
index 91468bf920a..bcfa097b277 100644
--- a/source/blender/draw/modes/shaders/armature_shape_outline_geom.glsl
+++ b/source/blender/draw/modes/shaders/armature_shape_outline_geom.glsl
@@ -64,10 +64,14 @@ void main(void)
 	float fac0 = dot(view_vec, n0);
 	float fac3 = dot(view_vec, n3);
 
-	/* If both adjacent verts are facing the camera the same way,
-	 * then it isn't an outline edge. */
-	if (sign(fac0) == sign(fac3))
-		return;
+	/* If one of the face is perpendicular to the view,
+	 * consider it and outline edge. */
+	if (abs(fac0) > 1e-5 && abs(fac3) > 1e-5) {
+		/* If both adjacent verts are facing the camera the same way,
+		 * then it isn't an outline edge. */
+		if (sign(fac0) == sign(fac3))
+			return;
+	}
 
 	/* Don't outline if concave edge. */
 	if (dot(n0, v13) > 0.0001)