1 files changed, 71 insertions, 0 deletions
diff --git a/intern/cycles/kernel/osl/shaders/node_geometry.osl b/intern/cycles/kernel/osl/shaders/node_geometry.osl
new file mode 100644
index 00000000000..55cda71db1b
--- /dev/null
+++ b/intern/cycles/kernel/osl/shaders/node_geometry.osl
@@ -0,0 +1,71 @@
+/*
+ * Copyright 2011-2013 Blender Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "stdcycles.h"
+
+shader node_geometry(normal NormalIn = N,
+                     string bump_offset = "center",
+
+                     output point Position = point(0.0, 0.0, 0.0),
+                     output normal Normal = normal(0.0, 0.0, 0.0),
+                     output normal Tangent = normal(0.0, 0.0, 0.0),
+                     output normal TrueNormal = normal(0.0, 0.0, 0.0),
+                     output vector Incoming = vector(0.0, 0.0, 0.0),
+                     output point Parametric = point(0.0, 0.0, 0.0),
+                     output float Backfacing = 0.0,
+                     output float Pointiness = 0.0,
+                     output float RandomPerIsland = 0.0)
+{
+  Position = P;
+  Normal = NormalIn;
+  TrueNormal = Ng;
+  Incoming = I;
+  Parametric = point(u, v, 0.0);
+  Backfacing = backfacing();
+
+  if (bump_offset == "dx") {
+    Position += Dx(Position);
+    Parametric += Dx(Parametric);
+  }
+  else if (bump_offset == "dy") {
+    Position += Dy(Position);
+    Parametric += Dy(Parametric);
+  }
+
+  /* first try to get tangent attribute */
+  point generated;
+
+  /* try to create spherical tangent from generated coordinates */
+  if (getattribute("geom:generated", generated)) {
+    normal data = normal(-(generated[1] - 0.5), (generated[0] - 0.5), 0.0);
+    vector T = transform("object", "world", data);
+    Tangent = cross(Normal, normalize(cross(T, Normal)));
+  }
+  else {
+    /* otherwise use surface derivatives */
+    Tangent = normalize(dPdu);
+  }
+
+  getattribute("geom:pointiness", Pointiness);
+  if (bump_offset == "dx") {
+    Pointiness += Dx(Pointiness);
+  }
+  else if (bump_offset == "dy") {
+    Pointiness += Dy(Pointiness);
+  }
+
+  getattribute("geom:random_per_island", RandomPerIsland);
+}