1 files changed, 28 insertions, 0 deletions
diff --git a/source/blender/draw/engines/overlay/shaders/overlay_viewer_attribute_curves_vert.glsl b/source/blender/draw/engines/overlay/shaders/overlay_viewer_attribute_curves_vert.glsl
new file mode 100644
index 00000000000..23d313e036f
--- /dev/null
+++ b/source/blender/draw/engines/overlay/shaders/overlay_viewer_attribute_curves_vert.glsl
@@ -0,0 +1,28 @@
+#pragma BLENDER_REQUIRE(common_view_clipping_lib.glsl)
+#pragma BLENDER_REQUIRE(common_view_lib.glsl)
+#pragma BLENDER_REQUIRE(common_hair_lib.glsl)
+
+void main()
+{
+  bool is_persp = (ProjectionMatrix[3][3] == 0.0);
+  float time, thick_time, thickness;
+  vec3 world_pos, tan, binor;
+  hair_get_pos_tan_binor_time(is_persp,
+                              ModelMatrixInverse,
+                              ViewMatrixInverse[3].xyz,
+                              ViewMatrixInverse[2].xyz,
+                              world_pos,
+                              tan,
+                              binor,
+                              time,
+                              thickness,
+                              thick_time);
+  gl_Position = point_world_to_ndc(world_pos);
+
+  if (is_point_domain) {
+    finalColor = texelFetch(color_tx, hair_get_base_id());
+  }
+  else {
+    finalColor = texelFetch(color_tx, hair_get_strand_id());
+  }
+}