1 files changed, 29 insertions, 0 deletions
diff --git a/source/blender/draw/engines/overlay/shaders/outline_prepass_vert.glsl b/source/blender/draw/engines/overlay/shaders/outline_prepass_vert.glsl
new file mode 100644
index 00000000000..7740f9a4af2
--- /dev/null
+++ b/source/blender/draw/engines/overlay/shaders/outline_prepass_vert.glsl
@@ -0,0 +1,29 @@
+
+in vec3 pos;
+
+#ifdef USE_GEOM
+out vec3 vPos;
+out int objectId_g;
+#  define objectId objectId_g
+#else
+
+flat out int objectId;
+#endif
+
+void main()
+{
+  vec3 world_pos = point_object_to_world(pos);
+#ifdef USE_GEOM
+  vPos = point_world_to_view(world_pos);
+#endif
+  gl_Position = point_world_to_ndc(world_pos);
+  /* Small bias to always be on top of the geom. */
+  gl_Position.z -= 1e-3;
+
+  /* ID 0 is nothing (background) */
+  objectId = resource_handle + 1;
+
+#ifdef USE_WORLD_CLIP_PLANES
+  world_clip_planes_calc_clip_distance(world_pos);
+#endif
+}