Cycles render engine, initial commit. This is the engine itself, blender modifications and build instructions will follow later.

Cycles uses code from some great open source projects, many thanks them:

* BVH building and traversal code from NVidia's "Understanding the Efficiency of Ray Traversal on GPUs":
http://code.google.com/p/understanding-the-efficiency-of-ray-traversal-on-gpus/
* Open Shading Language for a large part of the shading system:
http://code.google.com/p/openshadinglanguage/
* Blender for procedural textures and a few other nodes.
* Approximate Catmull Clark subdivision from NVidia Mesh tools:
http://code.google.com/p/nvidia-mesh-tools/
* Sobol direction vectors from:
http://web.maths.unsw.edu.au/~fkuo/sobol/
* Film response functions from:
http://www.cs.columbia.edu/CAVE/software/softlib/dorf.php

1 files changed, 48 insertions, 0 deletions

diff --git a/intern/cycles/kernel/svm/svm_noisetex.h b/intern/cycles/kernel/svm/svm_noisetex.h
new file mode 100644
index 00000000000..38b249a80fe
--- /dev/null
+++ b/intern/cycles/kernel/svm/svm_noisetex.h
@@ -0,0 +1,48 @@
+/*
+ * 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 float svm_noise_texture_value(float3 p)
+{
+	return cellnoise(p*1e8f);
+}
+
+__device float3 svm_noise_texture_color(float3 p)
+{
+	return cellnoise_color(p*1e8f);
+}
+
+__device void svm_node_tex_noise_f(ShaderData *sd, float *stack, uint co_offset, uint out_offset)
+{
+	float3 co = stack_load_float3(stack, co_offset);
+	float f = svm_noise_texture_value(co);
+
+	stack_store_float(stack, out_offset, f);
+}
+
+__device void svm_node_tex_noise_v(ShaderData *sd, float *stack, uint co_offset, uint out_offset)
+{
+	float3 co = stack_load_float3(stack, co_offset);
+	float3 f = svm_noise_texture_color(co);
+
+	stack_store_float3(stack, out_offset, f);
+}
+
+CCL_NAMESPACE_END
+