1 files changed, 60 insertions, 0 deletions
diff --git a/source/blender/draw/engines/eevee/shaders/surface_vert.glsl b/source/blender/draw/engines/eevee/shaders/surface_vert.glsl
new file mode 100644
index 00000000000..0ad1393dd70
--- /dev/null
+++ b/source/blender/draw/engines/eevee/shaders/surface_vert.glsl
@@ -0,0 +1,60 @@
+
+#pragma BLENDER_REQUIRE(common_hair_lib.glsl)
+#pragma BLENDER_REQUIRE(common_view_lib.glsl)
+#pragma BLENDER_REQUIRE(surface_lib.glsl)
+
+#ifndef HAIR_SHADER
+in vec3 pos;
+in vec3 nor;
+#endif
+
+RESOURCE_ID_VARYING
+
+void main()
+{
+  GPU_INTEL_VERTEX_SHADER_WORKAROUND
+
+  PASS_RESOURCE_ID
+
+#ifdef HAIR_SHADER
+  hairStrandID = hair_get_strand_id();
+  vec3 pos, binor;
+  hair_get_pos_tan_binor_time((ProjectionMatrix[3][3] == 0.0),
+                              ModelMatrixInverse,
+                              ViewMatrixInverse[3].xyz,
+                              ViewMatrixInverse[2].xyz,
+                              pos,
+                              hairTangent,
+                              binor,
+                              hairTime,
+                              hairThickness,
+                              hairThickTime);
+  worldNormal = cross(hairTangent, binor);
+  vec3 world_pos = pos;
+#else
+  vec3 world_pos = point_object_to_world(pos);
+#endif
+
+  gl_Position = point_world_to_ndc(world_pos);
+
+  /* Used for planar reflections */
+  gl_ClipDistance[0] = dot(vec4(world_pos, 1.0), clipPlanes[0]);
+
+#ifdef MESH_SHADER
+  worldPosition = world_pos;
+  viewPosition = point_world_to_view(worldPosition);
+
+#  ifndef HAIR_SHADER
+  worldNormal = normalize(normal_object_to_world(nor));
+#  endif
+
+  /* No need to normalize since this is just a rotation. */
+  viewNormal = normal_world_to_view(worldNormal);
+#  ifdef USE_ATTR
+#    ifdef HAIR_SHADER
+  pos = hair_get_strand_pos();
+#    endif
+  pass_attr(pos, NormalMatrix, ModelMatrixInverse);
+#  endif
+#endif
+}