Merge branch 'master' into soc-2020-io-performancesoc-2020-io-performance

1 files changed, 47 insertions, 0 deletions

diff --git a/intern/cycles/kernel/svm/normal.h b/intern/cycles/kernel/svm/normal.h
new file mode 100644
index 00000000000..6a2d88b68a6
--- /dev/null
+++ b/intern/cycles/kernel/svm/normal.h
@@ -0,0 +1,47 @@
+/*
+ * 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.
+ */
+
+#pragma once
+
+CCL_NAMESPACE_BEGIN
+
+ccl_device_noinline int svm_node_normal(KernelGlobals kg,
+                                        ccl_private ShaderData *sd,
+                                        ccl_private float *stack,
+                                        uint in_normal_offset,
+                                        uint out_normal_offset,
+                                        uint out_dot_offset,
+                                        int offset)
+{
+  /* read extra data */
+  uint4 node1 = read_node(kg, &offset);
+  float3 normal = stack_load_float3(stack, in_normal_offset);
+
+  float3 direction;
+  direction.x = __int_as_float(node1.x);
+  direction.y = __int_as_float(node1.y);
+  direction.z = __int_as_float(node1.z);
+  direction = normalize(direction);
+
+  if (stack_valid(out_normal_offset))
+    stack_store_float3(stack, out_normal_offset, direction);
+
+  if (stack_valid(out_dot_offset))
+    stack_store_float(stack, out_dot_offset, dot(direction, normalize(normal)));
+  return offset;
+}
+
+CCL_NAMESPACE_END