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, 244 insertions, 0 deletions

diff --git a/intern/cycles/device/device_memory.h b/intern/cycles/device/device_memory.h
new file mode 100644
index 00000000000..516a6bd0739
--- /dev/null
+++ b/intern/cycles/device/device_memory.h
@@ -0,0 +1,244 @@
+/*
+ * 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 __DEVICE_MEMORY_H__
+#define __DEVICE_MEMORY_H__
+
+/* Device Memory
+ *
+ * This file defines data types that can be used in device memory arrays, and
+ * a device_vector<T> type to store such arrays.
+ *
+ * device_vector<T> contains an STL vector, metadata about the data type,
+ * dimensions, elements, and a device pointer. For the CPU device this is just
+ * a pointer to the STL vector data, as no copying needs to take place. For
+ * other devices this is a pointer to device memory, where we will copy memory
+ * to and from. */
+
+#include "util_debug.h"
+#include "util_types.h"
+#include "util_vector.h"
+
+CCL_NAMESPACE_BEGIN
+
+/* Supported Data Types */
+
+enum DataType {
+	TYPE_UCHAR,
+	TYPE_UINT,
+	TYPE_INT,
+	TYPE_FLOAT
+};
+
+static inline size_t datatype_size(DataType datatype) 
+{
+	switch(datatype) {
+		case TYPE_UCHAR: return sizeof(uchar);
+		case TYPE_FLOAT: return sizeof(float);
+		case TYPE_UINT: return sizeof(uint);
+		case TYPE_INT: return sizeof(int);
+		default: return 0;
+	}
+}
+
+/* Traits for data types */
+
+template<typename T> struct device_type_traits {
+	static const DataType data_type = TYPE_UCHAR;
+	static const int num_elements = 0;
+};
+
+template<> struct device_type_traits<uchar> {
+	static const DataType data_type = TYPE_UCHAR;
+	static const int num_elements = 1;
+};
+
+template<> struct device_type_traits<uchar2> {
+	static const DataType data_type = TYPE_UCHAR;
+	static const int num_elements = 2;
+};
+
+template<> struct device_type_traits<uchar3> {
+	static const DataType data_type = TYPE_UCHAR;
+	static const int num_elements = 3;
+};
+
+template<> struct device_type_traits<uchar4> {
+	static const DataType data_type = TYPE_UCHAR;
+	static const int num_elements = 4;
+};
+
+template<> struct device_type_traits<uint> {
+	static const DataType data_type = TYPE_UINT;
+	static const int num_elements = 1;
+};
+
+template<> struct device_type_traits<uint2> {
+	static const DataType data_type = TYPE_UINT;
+	static const int num_elements = 2;
+};
+
+template<> struct device_type_traits<uint3> {
+	static const DataType data_type = TYPE_UINT;
+	static const int num_elements = 3;
+};
+
+template<> struct device_type_traits<uint4> {
+	static const DataType data_type = TYPE_UINT;
+	static const int num_elements = 4;
+};
+
+template<> struct device_type_traits<int> {
+	static const DataType data_type = TYPE_INT;
+	static const int num_elements = 1;
+};
+
+template<> struct device_type_traits<int2> {
+	static const DataType data_type = TYPE_INT;
+	static const int num_elements = 2;
+};
+
+template<> struct device_type_traits<int3> {
+	static const DataType data_type = TYPE_INT;
+	static const int num_elements = 3;
+};
+
+template<> struct device_type_traits<int4> {
+	static const DataType data_type = TYPE_INT;
+	static const int num_elements = 4;
+};
+
+template<> struct device_type_traits<float> {
+	static const DataType data_type = TYPE_FLOAT;
+	static const int num_elements = 1;
+};
+
+template<> struct device_type_traits<float2> {
+	static const DataType data_type = TYPE_FLOAT;
+	static const int num_elements = 2;
+};
+
+template<> struct device_type_traits<float3> {
+	static const DataType data_type = TYPE_FLOAT;
+	static const int num_elements = 3;
+};
+
+template<> struct device_type_traits<float4> {
+	static const DataType data_type = TYPE_FLOAT;
+	static const int num_elements = 4;
+};
+
+/* Device Memory */
+
+class device_memory
+{
+public:
+	size_t memory_size() { return data_size*data_elements*datatype_size(data_type); }
+
+	/* data information */
+	DataType data_type;
+	int data_elements;
+	device_ptr data_pointer;
+	size_t data_size;
+	size_t data_width;
+	size_t data_height;
+
+	/* device pointer */
+	device_ptr device_pointer;
+
+protected:
+	device_memory() {}
+	virtual ~device_memory() { assert(!device_pointer); }
+
+	/* no copying */
+	device_memory(const device_memory&);
+	device_memory& operator = (const device_memory&);
+};
+
+/* Device Vector */
+
+template<typename T> class device_vector : public device_memory
+{
+public:
+	device_vector()
+	{
+		data_type = device_type_traits<T>::data_type;
+		data_elements = device_type_traits<T>::num_elements;
+		data_pointer = 0;
+		data_size = 0;
+		data_width = 0;
+		data_height = 0;
+
+		assert(data_elements > 0);
+
+		device_pointer = 0;
+	}
+
+	virtual ~device_vector() {}
+
+	/* vector functions */
+	T *resize(size_t width, size_t height = 0)
+	{
+		data_size = (height == 0)? width: width*height;
+		data.resize(data_size);
+		data_pointer = (device_ptr)&data[0];
+		data_width = width;
+		data_height = height;
+
+		return &data[0];
+	}
+
+	T *copy(T *ptr, size_t width, size_t height = 0)
+	{
+		T *mem = resize(width, height);
+		memcpy(mem, ptr, memory_size());
+		return mem;
+	}
+
+	void reference(T *ptr, size_t width, size_t height = 0)
+	{
+		data.clear();
+		data_size = (height == 0)? width: width*height;
+		data_pointer = (device_ptr)ptr;
+		data_width = width;
+		data_height = height;
+	}
+
+	void clear()
+	{
+		data.clear();
+		data_pointer = 0;
+		data_width = 0;
+		data_height = 0;
+		data_size = 0;
+	}
+
+	size_t size()
+	{
+		return data.size();
+	}
+
+private:
+	array<T> data;
+	bool referenced;
+};
+
+CCL_NAMESPACE_END
+
+#endif /* __DEVICE_MEMORY_H__ */
+