1 files changed, 10 insertions, 1 deletions
diff --git a/source/blender/draw/engines/overlay/shaders/wireframe_vert.glsl b/source/blender/draw/engines/overlay/shaders/wireframe_vert.glsl
index 7e71f4ae587..f7467aa3bf4 100644
--- a/source/blender/draw/engines/overlay/shaders/wireframe_vert.glsl
+++ b/source/blender/draw/engines/overlay/shaders/wireframe_vert.glsl
@@ -4,6 +4,8 @@ uniform bool useColoring;
 uniform bool isTransform;
 uniform bool isObjectColor;
 uniform bool isRandomColor;
+uniform bool isHair;
+uniform vec4 hairDupliMatrix[4];
 
 in vec3 pos;
 in vec3 nor;
@@ -103,9 +105,16 @@ void main()
 {
   bool no_attr = all(equal(nor, vec3(0)));
   vec3 wnor = no_attr ? ViewMatrixInverse[2].xyz : normalize(normal_object_to_world(nor));
-
   vec3 wpos = point_object_to_world(pos);
 
+  if (isHair) {
+    mat4 obmat = mat4(
+        hairDupliMatrix[0], hairDupliMatrix[1], hairDupliMatrix[2], hairDupliMatrix[3]);
+
+    wpos = (obmat * vec4(pos, 1.0)).xyz;
+    wnor = -normalize(mat3(obmat) * nor);
+  }
+
   bool is_persp = (ProjectionMatrix[3][3] == 0.0);
   vec3 V = (is_persp) ? normalize(ViewMatrixInverse[3].xyz - wpos) : ViewMatrixInverse[2].xyz;