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, 111 insertions, 0 deletions

diff --git a/intern/cycles/kernel/osl/osl_services.h b/intern/cycles/kernel/osl/osl_services.h
new file mode 100644
index 00000000000..e5003074822
--- /dev/null
+++ b/intern/cycles/kernel/osl/osl_services.h
@@ -0,0 +1,111 @@
+/*
+ * 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.
+ */
+
+#ifndef __OSL_SERVICES_H__
+#define __OSL_SERVICES_H__
+
+/* OSL Render Services
+ *
+ * Implementation of OSL render services, to retriever matrices, attributes,
+ * textures and point clouds. In principle this should only be accessing
+ * kernel data, but currently we also reach back into the Scene to retrieve
+ * attributes.
+ */
+
+#include <OSL/oslexec.h>
+#include <OSL/oslclosure.h>
+
+#ifdef WITH_PARTIO
+#include <Partio.h>
+#endif
+
+CCL_NAMESPACE_BEGIN
+
+class Object;
+class Scene;
+class Shader;
+class ShaderData;
+class float3;
+class KernelGlobals;
+
+class OSLRenderServices : public OSL::RendererServices
+{
+public:
+	OSLRenderServices();
+	~OSLRenderServices();
+	
+	void thread_init(KernelGlobals *kernel_globals);
+
+	bool get_matrix(OSL::Matrix44 &result, OSL::TransformationPtr xform, float time);
+	bool get_inverse_matrix(OSL::Matrix44 &result, OSL::TransformationPtr xform, float time);
+	bool get_matrix(OSL::Matrix44 &result, ustring from, float time);
+	bool get_inverse_matrix(OSL::Matrix44 &result, ustring to, float time);
+
+	bool get_array_attribute(void *renderstate, bool derivatives, 
+		ustring object, TypeDesc type, ustring name,
+		int index, void *val);
+	bool get_attribute(void *renderstate, bool derivatives, ustring object,
+		TypeDesc type, ustring name, void *val);
+
+	bool get_userdata(bool derivatives, ustring name, TypeDesc type, 
+		void *renderstate, void *val);
+	bool has_userdata(ustring name, TypeDesc type, void *renderstate);
+
+ 	void *get_pointcloud_attr_query(ustring *attr_names,
+		TypeDesc *attr_types, int nattrs);
+	int pointcloud(ustring filename, const OSL::Vec3 &center, float radius,
+		int max_points, void *attr_query, void **attr_outdata);
+
+private:
+	KernelGlobals *kernel_globals;
+
+#ifdef WITH_PARTIO
+	/* OSL gets pointers to this but its definition is private.
+	   right now it only caches the types already converted to
+	   Partio constants. this is what get_pointcloud_attr_query
+	   returns */
+	struct AttrQuery
+	{
+		/* names of the attributes to query */
+		std::vector<ustring> attr_names;
+		/* types as (enum Partio::ParticleAttributeType) of the
+		   attributes in the query */
+		std::vector<int> attr_partio_types;
+		/* for sanity checks, capacity of the output arrays */
+		int capacity;
+	};
+
+	Partio::ParticlesData *get_pointcloud(ustring filename);
+
+	/* keep a list so adding elements doesn't invalidate pointers */
+	std::list<AttrQuery> m_attr_queries;
+#endif
+
+	static ustring u_distance;
+	static ustring u_index;
+	static ustring u_camera;
+	static ustring u_screen;
+	static ustring u_raster;
+	static ustring u_ndc;
+	static ustring u_empty;
+};
+
+CCL_NAMESPACE_END
+
+#endif /* __OSL_SERVICES_H__  */
+