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, 300 insertions, 0 deletions

diff --git a/intern/cycles/kernel/kernel.cpp b/intern/cycles/kernel/kernel.cpp
new file mode 100644
index 00000000000..656e90eb526
--- /dev/null
+++ b/intern/cycles/kernel/kernel.cpp
@@ -0,0 +1,300 @@
+/*
+ * 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.
+ */
+
+/* CPU kernel entry points */
+
+#include "kernel.h"
+#include "kernel_compat_cpu.h"
+#include "kernel_math.h"
+#include "kernel_types.h"
+#include "kernel_globals.h"
+#include "kernel_film.h"
+#include "kernel_path.h"
+#include "kernel_displace.h"
+
+CCL_NAMESPACE_BEGIN
+
+/* Globals */
+
+KernelGlobals *kernel_globals_create()
+{
+	KernelGlobals *kg = new KernelGlobals();
+#ifdef WITH_OSL
+	kg->osl.use = false;
+#endif
+	return kg;
+}
+
+void kernel_globals_free(KernelGlobals *kg)
+{
+	delete kg;
+}
+
+/* OSL */
+
+#ifdef WITH_OSL
+
+void *kernel_osl_memory(KernelGlobals *kg)
+{
+	return (void*)&kg->osl;
+}
+
+bool kernel_osl_use(KernelGlobals *kg)
+{
+	return kg->osl.use;
+}
+
+#endif
+
+/* Memory Copy */
+
+void kernel_const_copy(KernelGlobals *kg, const char *name, void *host, size_t size)
+{
+	if(strcmp(name, "__data") == 0)
+		memcpy(&kg->__data, host, size);
+	else
+		assert(0);
+}
+
+void kernel_tex_copy(KernelGlobals *kg, const char *name, device_ptr mem, size_t width, size_t height)
+{
+	if(strcmp(name, "__bvh_nodes") == 0) {
+		kg->__bvh_nodes.data = (float4*)mem;
+		kg->__bvh_nodes.width = width;
+	}
+	else if(strcmp(name, "__objects") == 0) {
+		kg->__objects.data = (float4*)mem;
+		kg->__objects.width = width;
+	}
+	else if(strcmp(name, "__tri_normal") == 0) {
+		kg->__tri_normal.data = (float4*)mem;
+		kg->__tri_normal.width = width;
+	}
+	else if(strcmp(name, "__tri_woop") == 0) {
+		kg->__tri_woop.data = (float4*)mem;
+		kg->__tri_woop.width = width;
+	}
+	else if(strcmp(name, "__prim_index") == 0) {
+		kg->__prim_index.data = (uint*)mem;
+		kg->__prim_index.width = width;
+	}
+	else if(strcmp(name, "__prim_object") == 0) {
+		kg->__prim_object.data = (uint*)mem;
+		kg->__prim_object.width = width;
+	}
+	else if(strcmp(name, "__object_node") == 0) {
+		kg->__object_node.data = (uint*)mem;
+		kg->__object_node.width = width;
+	}
+	else if(strcmp(name, "__tri_vnormal") == 0) {
+		kg->__tri_vnormal.data = (float4*)mem;
+		kg->__tri_vnormal.width = width;
+	}
+	else if(strcmp(name, "__tri_vindex") == 0) {
+		kg->__tri_vindex.data = (float4*)mem;
+		kg->__tri_vindex.width = width;
+	}
+	else if(strcmp(name, "__tri_verts") == 0) {
+		kg->__tri_verts.data = (float4*)mem;
+		kg->__tri_verts.width = width;
+	}
+	else if(strcmp(name, "__light_distribution") == 0) {
+		kg->__light_distribution.data = (float4*)mem;
+		kg->__light_distribution.width = width;
+	}
+	else if(strcmp(name, "__light_point") == 0) {
+		kg->__light_point.data = (float4*)mem;
+		kg->__light_point.width = width;
+	}
+	else if(strcmp(name, "__svm_nodes") == 0) {
+		kg->__svm_nodes.data = (uint4*)mem;
+		kg->__svm_nodes.width = width;
+	}
+	else if(strcmp(name, "__filter_table") == 0) {
+		kg->__filter_table.data = (float*)mem;
+		kg->__filter_table.width = width;
+	}
+	else if(strcmp(name, "__response_curve_R") == 0) {
+		kg->__response_curve_R.data = (float*)mem;
+		kg->__response_curve_R.width = width;
+	}
+	else if(strcmp(name, "__response_curve_B") == 0) {
+		kg->__response_curve_B.data = (float*)mem;
+		kg->__response_curve_B.width = width;
+	}
+	else if(strcmp(name, "__response_curve_G") == 0) {
+		kg->__response_curve_G.data = (float*)mem;
+		kg->__response_curve_G.width = width;
+	}
+	else if(strcmp(name, "__sobol_directions") == 0) {
+		kg->__sobol_directions.data = (uint*)mem;
+		kg->__sobol_directions.width = width;
+	}
+	else if(strcmp(name, "__attributes_map") == 0) {
+		kg->__attributes_map.data = (uint4*)mem;
+		kg->__attributes_map.width = width;
+	}
+	else if(strcmp(name, "__attributes_float") == 0) {
+		kg->__attributes_float.data = (float*)mem;
+		kg->__attributes_float.width = width;
+	}
+	else if(strcmp(name, "__attributes_float3") == 0) {
+		kg->__attributes_float3.data = (float4*)mem;
+		kg->__attributes_float3.width = width;
+	}
+	else if(strstr(name, "__tex_image")) {
+		texture_image_uchar4 *tex = NULL;
+		int id = atoi(name + strlen("__tex_image_"));
+
+		switch(id) {
+			case 0: tex = &kg->__tex_image_000; break;
+			case 1: tex = &kg->__tex_image_001; break;
+			case 2: tex = &kg->__tex_image_002; break;
+			case 3: tex = &kg->__tex_image_003; break;
+			case 4: tex = &kg->__tex_image_004; break;
+			case 5: tex = &kg->__tex_image_005; break;
+			case 6: tex = &kg->__tex_image_006; break;
+			case 7: tex = &kg->__tex_image_007; break;
+			case 8: tex = &kg->__tex_image_008; break;
+			case 9: tex = &kg->__tex_image_009; break;
+			case 10: tex = &kg->__tex_image_010; break;
+			case 11: tex = &kg->__tex_image_011; break;
+			case 12: tex = &kg->__tex_image_012; break;
+			case 13: tex = &kg->__tex_image_013; break;
+			case 14: tex = &kg->__tex_image_014; break;
+			case 15: tex = &kg->__tex_image_015; break;
+			case 16: tex = &kg->__tex_image_016; break;
+			case 17: tex = &kg->__tex_image_017; break;
+			case 18: tex = &kg->__tex_image_018; break;
+			case 19: tex = &kg->__tex_image_019; break;
+			case 20: tex = &kg->__tex_image_020; break;
+			case 21: tex = &kg->__tex_image_021; break;
+			case 22: tex = &kg->__tex_image_022; break;
+			case 23: tex = &kg->__tex_image_023; break;
+			case 24: tex = &kg->__tex_image_024; break;
+			case 25: tex = &kg->__tex_image_025; break;
+			case 26: tex = &kg->__tex_image_026; break;
+			case 27: tex = &kg->__tex_image_027; break;
+			case 28: tex = &kg->__tex_image_028; break;
+			case 29: tex = &kg->__tex_image_029; break;
+			case 30: tex = &kg->__tex_image_030; break;
+			case 31: tex = &kg->__tex_image_031; break;
+			case 32: tex = &kg->__tex_image_032; break;
+			case 33: tex = &kg->__tex_image_033; break;
+			case 34: tex = &kg->__tex_image_034; break;
+			case 35: tex = &kg->__tex_image_035; break;
+			case 36: tex = &kg->__tex_image_036; break;
+			case 37: tex = &kg->__tex_image_037; break;
+			case 38: tex = &kg->__tex_image_038; break;
+			case 39: tex = &kg->__tex_image_039; break;
+			case 40: tex = &kg->__tex_image_040; break;
+			case 41: tex = &kg->__tex_image_041; break;
+			case 42: tex = &kg->__tex_image_042; break;
+			case 43: tex = &kg->__tex_image_043; break;
+			case 44: tex = &kg->__tex_image_044; break;
+			case 45: tex = &kg->__tex_image_045; break;
+			case 46: tex = &kg->__tex_image_046; break;
+			case 47: tex = &kg->__tex_image_047; break;
+			case 48: tex = &kg->__tex_image_048; break;
+			case 49: tex = &kg->__tex_image_049; break;
+			case 50: tex = &kg->__tex_image_050; break;
+			case 51: tex = &kg->__tex_image_051; break;
+			case 52: tex = &kg->__tex_image_052; break;
+			case 53: tex = &kg->__tex_image_053; break;
+			case 54: tex = &kg->__tex_image_054; break;
+			case 55: tex = &kg->__tex_image_055; break;
+			case 56: tex = &kg->__tex_image_056; break;
+			case 57: tex = &kg->__tex_image_057; break;
+			case 58: tex = &kg->__tex_image_058; break;
+			case 59: tex = &kg->__tex_image_059; break;
+			case 60: tex = &kg->__tex_image_060; break;
+			case 61: tex = &kg->__tex_image_061; break;
+			case 62: tex = &kg->__tex_image_062; break;
+			case 63: tex = &kg->__tex_image_063; break;
+			case 64: tex = &kg->__tex_image_064; break;
+			case 65: tex = &kg->__tex_image_065; break;
+			case 66: tex = &kg->__tex_image_066; break;
+			case 67: tex = &kg->__tex_image_067; break;
+			case 68: tex = &kg->__tex_image_068; break;
+			case 69: tex = &kg->__tex_image_069; break;
+			case 70: tex = &kg->__tex_image_070; break;
+			case 71: tex = &kg->__tex_image_071; break;
+			case 72: tex = &kg->__tex_image_072; break;
+			case 73: tex = &kg->__tex_image_073; break;
+			case 74: tex = &kg->__tex_image_074; break;
+			case 75: tex = &kg->__tex_image_075; break;
+			case 76: tex = &kg->__tex_image_076; break;
+			case 77: tex = &kg->__tex_image_077; break;
+			case 78: tex = &kg->__tex_image_078; break;
+			case 79: tex = &kg->__tex_image_079; break;
+			case 80: tex = &kg->__tex_image_080; break;
+			case 81: tex = &kg->__tex_image_081; break;
+			case 82: tex = &kg->__tex_image_082; break;
+			case 83: tex = &kg->__tex_image_083; break;
+			case 84: tex = &kg->__tex_image_084; break;
+			case 85: tex = &kg->__tex_image_085; break;
+			case 86: tex = &kg->__tex_image_086; break;
+			case 87: tex = &kg->__tex_image_087; break;
+			case 88: tex = &kg->__tex_image_088; break;
+			case 89: tex = &kg->__tex_image_089; break;
+			case 90: tex = &kg->__tex_image_090; break;
+			case 91: tex = &kg->__tex_image_091; break;
+			case 92: tex = &kg->__tex_image_092; break;
+			case 93: tex = &kg->__tex_image_093; break;
+			case 94: tex = &kg->__tex_image_094; break;
+			case 95: tex = &kg->__tex_image_095; break;
+			case 96: tex = &kg->__tex_image_096; break;
+			case 97: tex = &kg->__tex_image_097; break;
+			case 98: tex = &kg->__tex_image_098; break;
+			case 99: tex = &kg->__tex_image_099; break;
+			default: break;
+		}
+
+		if(tex) {
+			tex->data = (uchar4*)mem;
+			tex->width = width;
+			tex->height = height;
+		}
+	}
+	else
+		assert(0);
+}
+
+/* Path Tracing */
+
+void kernel_cpu_path_trace(KernelGlobals *kg, float4 *buffer, unsigned int *rng_state, int pass, int x, int y)
+{
+	kernel_path_trace(kg, buffer, rng_state, pass, x, y);
+}
+
+/* Tonemapping */
+
+void kernel_cpu_tonemap(KernelGlobals *kg, uchar4 *rgba, float4 *buffer, int pass, int resolution, int x, int y)
+{
+	kernel_film_tonemap(kg, rgba, buffer, pass, resolution, x, y);
+}
+
+/* Displacement */
+
+void kernel_cpu_displace(KernelGlobals *kg, uint4 *input, float3 *offset, int i)
+{
+	kernel_displace(kg, input, offset, i);
+}
+
+CCL_NAMESPACE_END
+