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, 136 insertions, 0 deletions

diff --git a/intern/cycles/device/device.h b/intern/cycles/device/device.h
new file mode 100644
index 00000000000..aba077fc2f3
--- /dev/null
+++ b/intern/cycles/device/device.h
@@ -0,0 +1,136 @@
+/*
+ * 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_H__
+#define __DEVICE_H__
+
+#include <stdlib.h>
+
+#include "device_memory.h"
+
+#include "util_string.h"
+#include "util_thread.h"
+#include "util_types.h"
+#include "util_vector.h"
+
+CCL_NAMESPACE_BEGIN
+
+class Progress;
+
+enum DeviceType {
+	DEVICE_NONE,
+	DEVICE_CPU,
+	DEVICE_OPENCL,
+	DEVICE_CUDA,
+	DEVICE_NETWORK,
+	DEVICE_MULTI
+};
+
+enum MemoryType {
+	MEM_READ_ONLY,
+	MEM_WRITE_ONLY,
+	MEM_READ_WRITE
+};
+
+/* Device Task */
+
+class DeviceTask {
+public:
+	typedef enum { PATH_TRACE, TONEMAP, DISPLACE } Type;
+	Type type;
+
+	int x, y, w, h;
+	device_ptr rng_state;
+	device_ptr rgba;
+	device_ptr buffer;
+	int pass;
+	int resolution;
+
+	device_ptr displace_input;
+	device_ptr displace_offset;
+	int displace_x, displace_w;
+
+	DeviceTask(Type type = PATH_TRACE);
+	void split(ThreadQueue<DeviceTask>& tasks, int num);
+};
+
+/* Device */
+
+class Device {
+protected:
+	Device() {}
+
+	DeviceType type;
+	bool background;
+
+public:
+	virtual ~Device() {}
+
+	/* info */
+	virtual string description() = 0;
+
+	/* regular memory */
+	virtual void mem_alloc(device_memory& mem, MemoryType type) = 0;
+	virtual void mem_copy_to(device_memory& mem) = 0;
+	virtual void mem_copy_from(device_memory& mem,
+		size_t offset, size_t size) = 0;
+	virtual void mem_zero(device_memory& mem) = 0;
+	virtual void mem_free(device_memory& mem) = 0;
+
+	/* constant memory */
+	virtual void const_copy_to(const char *name, void *host, size_t size) = 0;
+
+	/* texture memory */
+	virtual void tex_alloc(const char *name, device_memory& mem,
+		bool interpolation = false, bool periodic = false) {};
+	virtual void tex_free(device_memory& mem) {};
+
+	/* pixel memory */
+	virtual void pixels_alloc(device_memory& mem);
+	virtual void pixels_copy_from(device_memory& mem, int y, int w, int h);
+	virtual void pixels_free(device_memory& mem);
+
+	/* open shading language, only for CPU device */
+	virtual void *osl_memory() { return NULL; }
+
+	/* tasks */
+	virtual void task_add(DeviceTask& task) = 0;
+	virtual void task_wait() = 0;
+	virtual void task_cancel() = 0;
+	
+	/* opengl drawing */
+	virtual void draw_pixels(device_memory& mem, int y, int w, int h,
+		int width, int height);
+
+#ifdef WITH_NETWORK
+	/* networking */
+	void server_run();
+#endif
+
+	/* static */
+	static Device *create(DeviceType type, bool background = true);
+
+	static DeviceType type_from_string(const char *name);
+	static string string_from_type(DeviceType type);
+	static vector<DeviceType> available_types();
+};
+
+CCL_NAMESPACE_END
+
+#endif /* __DEVICE_H__ */
+