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, 114 insertions, 0 deletions

diff --git a/intern/cycles/kernel/osl/osl_closures.h b/intern/cycles/kernel/osl/osl_closures.h
new file mode 100644
index 00000000000..20a759586b0
--- /dev/null
+++ b/intern/cycles/kernel/osl/osl_closures.h
@@ -0,0 +1,114 @@
+/*
+ * Adapted from Open Shading Language with this license:
+ *
+ * Copyright (c) 2009-2010 Sony Pictures Imageworks Inc., et al.
+ * All Rights Reserved.
+ *
+ * Modifications Copyright 2011, Blender Foundation.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ * * Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * * Neither the name of Sony Pictures Imageworks nor the names of its
+ *   contributors may be used to endorse or promote products derived from
+ *   this software without specific prior written permission.
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __OSL_CLOSURES_H__
+#define __OSL_CLOSURES_H__
+
+#include <OSL/oslclosure.h>
+#include <OSL/oslexec.h>
+#include <OSL/genclosure.h>
+
+CCL_NAMESPACE_BEGIN
+
+enum {
+	OSL_CLOSURE_BSDF_DIFFUSE_ID,
+	OSL_CLOSURE_BSDF_TRANSLUCENT_ID,
+	OSL_CLOSURE_BSDF_REFLECTION_ID,
+	OSL_CLOSURE_BSDF_REFRACTION_ID,
+	OSL_CLOSURE_BSDF_TRANSPARENT_ID,
+	OSL_CLOSURE_BSDF_MICROFACET_GGX_ID,
+	OSL_CLOSURE_BSDF_MICROFACET_GGX_REFRACTION_ID,
+	OSL_CLOSURE_BSDF_MICROFACET_BECKMANN_ID,
+	OSL_CLOSURE_BSDF_MICROFACET_BECKMANN_REFRACTION_ID,
+	OSL_CLOSURE_BSDF_WARD_ID,
+	OSL_CLOSURE_BSDF_ASHIKHMIN_VELVET_ID,
+	OSL_CLOSURE_BSDF_WESTIN_BACKSCATTER_ID,
+	OSL_CLOSURE_BSDF_WESTIN_SHEEN_ID,
+	OSL_CLOSURE_BSSRDF_CUBIC_ID,
+	OSL_CLOSURE_EMISSION_ID,
+	OSL_CLOSURE_DEBUG_ID,
+	OSL_CLOSURE_BACKGROUND_ID,
+	OSL_CLOSURE_HOLDOUT_ID,
+	OSL_CLOSURE_SUBSURFACE_ID
+};
+
+extern OSL::ClosureParam bsdf_diffuse_params[];
+extern OSL::ClosureParam bsdf_translucent_params[];
+extern OSL::ClosureParam bsdf_reflection_params[];
+extern OSL::ClosureParam bsdf_refraction_params[];
+extern OSL::ClosureParam bsdf_transparent_params[];
+extern OSL::ClosureParam bsdf_microfacet_ggx_params[];
+extern OSL::ClosureParam bsdf_microfacet_ggx_refraction_params[];
+extern OSL::ClosureParam bsdf_microfacet_beckmann_params[];
+extern OSL::ClosureParam bsdf_microfacet_beckmann_refraction_params[];
+extern OSL::ClosureParam bsdf_ward_params[];
+extern OSL::ClosureParam bsdf_ashikhmin_velvet_params[];
+extern OSL::ClosureParam bsdf_westin_backscatter_params[];
+extern OSL::ClosureParam bsdf_westin_sheen_params[];
+extern OSL::ClosureParam closure_bssrdf_cubic_params[];
+extern OSL::ClosureParam closure_emission_params[];
+extern OSL::ClosureParam closure_debug_params[];
+extern OSL::ClosureParam closure_background_params[];
+extern OSL::ClosureParam closure_holdout_params[];
+extern OSL::ClosureParam closure_subsurface_params[];
+
+void bsdf_diffuse_prepare(OSL::RendererServices *, int id, void *data);
+void bsdf_translucent_prepare(OSL::RendererServices *, int id, void *data);
+void bsdf_reflection_prepare(OSL::RendererServices *, int id, void *data);
+void bsdf_refraction_prepare(OSL::RendererServices *, int id, void *data);
+void bsdf_transparent_prepare(OSL::RendererServices *, int id, void *data);
+void bsdf_microfacet_ggx_prepare(OSL::RendererServices *, int id, void *data);
+void bsdf_microfacet_ggx_refraction_prepare(OSL::RendererServices *, int id, void *data);
+void bsdf_microfacet_beckmann_prepare(OSL::RendererServices *, int id, void *data);
+void bsdf_microfacet_beckmann_refraction_prepare(OSL::RendererServices *, int id, void *data);
+void bsdf_ward_prepare(OSL::RendererServices *, int id, void *data);
+void bsdf_ashikhmin_velvet_prepare(OSL::RendererServices *, int id, void *data);
+void bsdf_westin_backscatter_prepare(OSL::RendererServices *, int id, void *data);
+void bsdf_westin_sheen_prepare(OSL::RendererServices *, int id, void *data);
+void closure_bssrdf_cubic_prepare(OSL::RendererServices *, int id, void *data);
+void closure_emission_prepare(OSL::RendererServices *, int id, void *data);
+void closure_debug_prepare(OSL::RendererServices *, int id, void *data);
+void closure_background_prepare(OSL::RendererServices *, int id, void *data);
+void closure_holdout_prepare(OSL::RendererServices *, int id, void *data);
+void closure_subsurface_prepare(OSL::RendererServices *, int id, void *data);
+
+#define CLOSURE_PREPARE(name, classname)          \
+void name(RendererServices *, int id, void *data) \
+{                                                 \
+	memset(data, 0, sizeof(classname));           \
+	new (data) classname();                       \
+}
+
+CCL_NAMESPACE_END
+
+#endif /* __OSL_CLOSURES_H__ */
+