1 files changed, 52 insertions, 0 deletions
diff --git a/intern/cycles/kernel/svm/svm_displace.h b/intern/cycles/kernel/svm/svm_displace.h
new file mode 100644
index 00000000000..b1677f67eca
--- /dev/null
+++ b/intern/cycles/kernel/svm/svm_displace.h
@@ -0,0 +1,52 @@
+/*
+ * 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
+
+/* Bump Node */
+
+__device void svm_node_set_bump(ShaderData *sd, float *stack, uint c_offset, uint x_offset, uint y_offset)
+{
+#ifdef __RAY_DIFFERENTIALS__
+	float h_c = stack_load_float(stack, c_offset);
+	float h_x = stack_load_float(stack, x_offset);
+	float h_y = stack_load_float(stack, y_offset);
+
+	float3 Rx = cross(sd->dP.dy, sd->N);
+	float3 Ry = cross(sd->N, sd->dP.dx);
+
+	float det = dot(sd->dP.dx, Rx);
+	float3 surfgrad = (h_x - h_c)*Rx + (h_y - h_c)*Ry;
+
+	surfgrad *= 0.1f; /* todo: remove this factor */
+
+	float absdet = fabsf(det);
+	sd->N = normalize(absdet*sd->N - signf(det)*surfgrad);
+#endif
+}
+
+/* Displacement Node */
+
+__device void svm_node_set_displacement(ShaderData *sd, float *stack, uint fac_offset)
+{
+	float d = stack_load_float(stack, fac_offset);
+	sd->P += sd->N*d*0.1f; /* todo: get rid of this factor */
+}
+
+CCL_NAMESPACE_END
+