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Diffstat (limited to 'intern/cycles/kernel/svm/svm_normal.h')
-rw-r--r--intern/cycles/kernel/svm/svm_normal.h41
1 files changed, 41 insertions, 0 deletions
diff --git a/intern/cycles/kernel/svm/svm_normal.h b/intern/cycles/kernel/svm/svm_normal.h
new file mode 100644
index 00000000000..0b3f63b6d7e
--- /dev/null
+++ b/intern/cycles/kernel/svm/svm_normal.h
@@ -0,0 +1,41 @@
+/*
+ * Copyright 2011, Blender Foundation.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+CCL_NAMESPACE_BEGIN
+
+__device void svm_node_normal(KernelGlobals *kg, ShaderData *sd, 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 = node1.x;
+ direction.y = node1.y;
+ direction.z = 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)));
+}
+
+CCL_NAMESPACE_END
+