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, 198 insertions, 0 deletions

diff --git a/intern/cycles/device/device.cpp b/intern/cycles/device/device.cpp
new file mode 100644
index 00000000000..4fae9310a7f
--- /dev/null
+++ b/intern/cycles/device/device.cpp
@@ -0,0 +1,198 @@
+/*
+ * 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.
+ */
+
+#include <stdlib.h>
+#include <string.h>
+
+#include "device.h"
+#include "device_intern.h"
+
+#include "util_cuda.h"
+#include "util_debug.h"
+#include "util_opengl.h"
+#include "util_types.h"
+#include "util_vector.h"
+
+CCL_NAMESPACE_BEGIN
+
+/* Device Task */
+
+DeviceTask::DeviceTask(Type type_)
+: type(type_), x(0), y(0), w(0), h(0), rng_state(0), rgba(0), buffer(0),
+  pass(0), resolution(0),
+  displace_input(0), displace_offset(0), displace_x(0), displace_w(0)
+{
+}
+
+void DeviceTask::split(ThreadQueue<DeviceTask>& tasks, int num)
+{
+	if(type == DISPLACE) {
+		for(int i = 0; i < num; i++) {
+			int tx = displace_x + (displace_w/num)*i;
+			int tw = (i == num-1)? displace_w - i*(displace_w/num): displace_w/num;
+
+			DeviceTask task = *this;
+
+			task.displace_x = tx;
+			task.displace_w = tw;
+
+			tasks.push(task);
+		}
+	}
+	else {
+		for(int i = 0; i < num; i++) {
+			int ty = y + (h/num)*i;
+			int th = (i == num-1)? h - i*(h/num): h/num;
+
+			DeviceTask task = *this;
+
+			task.y = ty;
+			task.h = th;
+
+			tasks.push(task);
+		}
+	}
+}
+
+/* Device */
+
+void Device::pixels_alloc(device_memory& mem)
+{
+	mem_alloc(mem, MEM_READ_WRITE);
+}
+
+void Device::pixels_copy_from(device_memory& mem, int y, int w, int h)
+{
+	mem_copy_from(mem, sizeof(uchar)*4*y*w, sizeof(uchar)*4*w*h);
+}
+
+void Device::pixels_free(device_memory& mem)
+{
+	mem_free(mem);
+}
+
+void Device::draw_pixels(device_memory& rgba, int y, int w, int h, int width, int height)
+{
+	pixels_copy_from(rgba, y, w, h);
+
+	glPixelZoom((float)width/(float)w, (float)height/(float)h);
+	glRasterPos2f(0, y);
+
+	glDrawPixels(w, h, GL_RGBA, GL_UNSIGNED_BYTE, (void*)rgba.data_pointer);
+
+	glRasterPos2f(0.0f, 0.0f);
+	glPixelZoom(1.0f, 1.0f);
+}
+
+Device *Device::create(DeviceType type, bool background)
+{
+	Device *device;
+
+	switch(type) {
+		case DEVICE_CPU:
+			device = device_cpu_create();
+			break;
+#ifdef WITH_CUDA
+		case DEVICE_CUDA:
+			if(cuLibraryInit())
+				device = device_cuda_create(background);
+			else
+				device = NULL;
+			break;
+#endif
+#ifdef WITH_MULTI
+		case DEVICE_MULTI:
+			device = device_multi_create(background);
+			break;
+#endif
+#ifdef WITH_NETWORK
+		case DEVICE_NETWORK:
+			device = device_network_create("127.0.0.1");
+			break;
+#endif
+#ifdef WITH_OPENCL
+		case DEVICE_OPENCL:
+			device = device_opencl_create(background);
+			break;
+#endif
+		default:
+			return NULL;
+	}
+
+	return device;
+}
+
+DeviceType Device::type_from_string(const char *name)
+{
+	if(strcmp(name, "cpu") == 0)
+		return DEVICE_CPU;
+	else if(strcmp(name, "cuda") == 0)
+		return DEVICE_CUDA;
+	else if(strcmp(name, "opencl") == 0)
+		return DEVICE_OPENCL;
+	else if(strcmp(name, "network") == 0)
+		return DEVICE_NETWORK;
+	else if(strcmp(name, "multi") == 0)
+		return DEVICE_MULTI;
+	
+	return DEVICE_NONE;
+}
+
+string Device::string_from_type(DeviceType type)
+{
+	if(type == DEVICE_CPU)
+		return "cpu";
+	else if(type == DEVICE_CUDA)
+		return "cuda";
+	else if(type == DEVICE_OPENCL)
+		return "opencl";
+	else if(type == DEVICE_NETWORK)
+		return "network";
+	else if(type == DEVICE_MULTI)
+		return "multi";
+	
+	return "";
+}
+
+vector<DeviceType> Device::available_types()
+{
+	vector<DeviceType> types;
+
+	types.push_back(DEVICE_CPU);
+
+#ifdef WITH_CUDA
+	if(cuLibraryInit())
+		types.push_back(DEVICE_CUDA);
+#endif
+
+#ifdef WITH_OPENCL
+	types.push_back(DEVICE_OPENCL);
+#endif
+
+#ifdef WITH_NETWORK
+	types.push_back(DEVICE_NETWORK);
+#endif
+#ifdef WITH_MULTI
+	types.push_back(DEVICE_MULTI);
+#endif
+
+	return types;
+}
+
+CCL_NAMESPACE_END
+