Code refactor: add generic Cycles node infrastructure.

Differential Revision: https://developer.blender.org/D2016

6 files changed, 956 insertions, 0 deletions

diff --git a/intern/cycles/graph/CMakeLists.txt b/intern/cycles/graph/CMakeLists.txt
new file mode 100644
index 00000000000..401bdb47392
--- /dev/null
+++ b/intern/cycles/graph/CMakeLists.txt
@@ -0,0 +1,22 @@
+
+set(INC
+	.
+	../util
+)
+
+set(SRC
+	node.cpp
+	node_type.cpp
+)
+
+set(SRC_HEADERS
+	node.h
+	node_enum.h
+	node_type.h
+)
+
+include_directories(${INC})
+include_directories(SYSTEM ${INC_SYS})
+
+add_library(cycles_graph ${SRC} ${SRC_HEADERS})
+
diff --git a/intern/cycles/graph/node.cpp b/intern/cycles/graph/node.cpp
new file mode 100644
index 00000000000..d9a6bde4fcd
--- /dev/null
+++ b/intern/cycles/graph/node.cpp
@@ -0,0 +1,354 @@
+/*
+ * Copyright 2011-2016 Blender Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "node.h"
+#include "node_type.h"
+
+#include "util_foreach.h"
+#include "util_param.h"
+#include "util_transform.h"
+
+CCL_NAMESPACE_BEGIN
+
+/* Node Type */
+
+Node::Node(const NodeType *type_, ustring name_)
+: name(name_), type(type_)
+{
+	assert(type);
+
+	/* assign non-empty name, convenient for debugging */
+	if(name.empty()) {
+		name = type->name;
+	}
+
+	/* initialize default values */
+	typedef unordered_map<ustring, SocketType, ustringHash> map_type;
+	foreach(const map_type::value_type& it, type->inputs) {
+		const SocketType& socket = it.second;
+		const void *src = socket.default_value;
+		void *dst = ((char*)this) + socket.struct_offset;
+		memcpy(dst, src, socket.size());
+	}
+}
+
+Node::~Node()
+{
+}
+
+template<typename T>
+static T& get_socket_value(const Node *node, const SocketType& socket)
+{
+	return (T&)*(((char*)node) + socket.struct_offset);
+}
+
+static bool is_socket_float3(const SocketType& socket)
+{
+	return socket.type == SocketType::COLOR ||
+	       socket.type == SocketType::POINT ||
+		   socket.type == SocketType::VECTOR ||
+		   socket.type == SocketType::NORMAL;
+}
+
+static bool is_socket_array_float3(const SocketType& socket)
+{
+	return socket.type == SocketType::COLOR_ARRAY ||
+	       socket.type == SocketType::POINT_ARRAY ||
+		   socket.type == SocketType::VECTOR_ARRAY ||
+		   socket.type == SocketType::NORMAL_ARRAY;
+}
+
+/* set values */
+void Node::set(const SocketType& input, bool value)
+{
+	assert(input.type == SocketType::BOOLEAN);
+	get_socket_value<bool>(this, input) = value;
+}
+
+void Node::set(const SocketType& input, int value)
+{
+	assert((input.type == SocketType::INT || input.type == SocketType::ENUM));
+	get_socket_value<int>(this, input) = value;
+}
+
+void Node::set(const SocketType& input, float value)
+{
+	assert(input.type == SocketType::FLOAT);
+	get_socket_value<float>(this, input) = value;
+}
+
+void Node::set(const SocketType& input, float2 value)
+{
+	assert(input.type == SocketType::FLOAT);
+	get_socket_value<float2>(this, input) = value;
+}
+
+void Node::set(const SocketType& input, float3 value)
+{
+	assert(is_socket_float3(input));
+	get_socket_value<float3>(this, input) = value;
+}
+
+void Node::set(const SocketType& input, ustring value)
+{
+	if(input.type == SocketType::STRING) {
+		get_socket_value<ustring>(this, input) = value;
+	}
+	else if(input.type == SocketType::ENUM) {
+		const NodeEnum& enm = *input.enum_values;
+		if(enm.exists(value)) {
+			get_socket_value<int>(this, input) = enm[value];
+		}
+		else {
+			assert(0);
+		}
+	}
+	else {
+		assert(0);
+	}
+}
+
+void Node::set(const SocketType& input, const Transform& value)
+{
+	assert(input.type == SocketType::TRANSFORM);
+	get_socket_value<Transform>(this, input) = value;
+}
+
+void Node::set(const SocketType& input, Node *value)
+{
+	assert(input.type == SocketType::TRANSFORM);
+	get_socket_value<Node*>(this, input) = value;
+}
+
+/* set array values */
+void Node::set(const SocketType& input, array<bool>& value)
+{
+	assert(input.type == SocketType::BOOLEAN_ARRAY);
+	get_socket_value<array<bool> >(this, input).steal_data(value);
+}
+
+void Node::set(const SocketType& input, array<int>& value)
+{
+	assert(input.type == SocketType::INT_ARRAY);
+	get_socket_value<array<int> >(this, input).steal_data(value);
+}
+
+void Node::set(const SocketType& input, array<float>& value)
+{
+	assert(input.type == SocketType::FLOAT_ARRAY);
+	get_socket_value<array<float> >(this, input).steal_data(value);
+}
+
+void Node::set(const SocketType& input, array<float2>& value)
+{
+	assert(input.type == SocketType::FLOAT_ARRAY);
+	get_socket_value<array<float2> >(this, input).steal_data(value);
+}
+
+void Node::set(const SocketType& input, array<float3>& value)
+{
+	assert(is_socket_array_float3(input));
+	get_socket_value<array<float3> >(this, input).steal_data(value);
+}
+
+void Node::set(const SocketType& input, array<ustring>& value)
+{
+	assert(input.type == SocketType::STRING_ARRAY);
+	get_socket_value<array<ustring> >(this, input).steal_data(value);
+}
+
+void Node::set(const SocketType& input, array<Transform>& value)
+{
+	assert(input.type == SocketType::TRANSFORM_ARRAY);
+	get_socket_value<array<Transform> >(this, input).steal_data(value);
+}
+
+void Node::set(const SocketType& input, array<Node*>& value)
+{
+	assert(input.type == SocketType::TRANSFORM_ARRAY);
+	get_socket_value<array<Node*> >(this, input).steal_data(value);
+}
+
+/* get values */
+bool Node::get_bool(const SocketType& input) const
+{
+	assert(input.type == SocketType::BOOLEAN);
+	return get_socket_value<bool>(this, input);
+}
+
+int Node::get_int(const SocketType& input) const
+{
+	assert(input.type == SocketType::INT || input.type == SocketType::ENUM);
+	return get_socket_value<int>(this, input);
+}
+
+float Node::get_float(const SocketType& input) const
+{
+	assert(input.type == SocketType::FLOAT);
+	return get_socket_value<float>(this, input);
+}
+
+float2 Node::get_float2(const SocketType& input) const
+{
+	assert(input.type == SocketType::FLOAT);
+	return get_socket_value<float2>(this, input);
+}
+
+float3 Node::get_float3(const SocketType& input) const
+{
+	assert(is_socket_float3(input));
+	return get_socket_value<float3>(this, input);
+}
+
+ustring Node::get_string(const SocketType& input) const
+{
+	if(input.type == SocketType::STRING) {
+		return get_socket_value<ustring>(this, input);
+	}
+	else if(input.type == SocketType::ENUM) {
+		const NodeEnum& enm = *input.enum_values;
+		int intvalue = get_socket_value<int>(this, input);
+		return (enm.exists(intvalue)) ? enm[intvalue] : ustring();
+	}
+	else {
+		assert(0);
+		return ustring();
+	}
+}
+
+Transform Node::get_transform(const SocketType& input) const
+{
+	assert(input.type == SocketType::TRANSFORM);
+	return get_socket_value<Transform>(this, input);
+}
+
+Node *Node::get_node(const SocketType& input) const
+{
+	assert(input.type == SocketType::NODE);
+	return get_socket_value<Node*>(this, input);
+}
+
+/* get array values */
+const array<bool>& Node::get_bool_array(const SocketType& input) const
+{
+	assert(input.type == SocketType::BOOLEAN_ARRAY);
+	return get_socket_value<array<bool> >(this, input);
+}
+
+const array<int>& Node::get_int_array(const SocketType& input) const
+{
+	assert(input.type == SocketType::INT_ARRAY);
+	return get_socket_value<array<int> >(this, input);
+}
+
+const array<float>& Node::get_float_array(const SocketType& input) const
+{
+	assert(input.type == SocketType::FLOAT_ARRAY);
+	return get_socket_value<array<float> >(this, input);
+}
+
+const array<float2>& Node::get_float2_array(const SocketType& input) const
+{
+	assert(input.type == SocketType::FLOAT_ARRAY);
+	return get_socket_value<array<float2> >(this, input);
+}
+
+const array<float3>& Node::get_float3_array(const SocketType& input) const
+{
+	assert(is_socket_array_float3(input));
+	return get_socket_value<array<float3> >(this, input);
+}
+
+const array<ustring>& Node::get_string_array(const SocketType& input) const
+{
+	assert(input.type == SocketType::STRING_ARRAY);
+	return get_socket_value<array<ustring> >(this, input);
+}
+
+const array<Transform>& Node::get_transform_array(const SocketType& input) const
+{
+	assert(input.type == SocketType::TRANSFORM_ARRAY);
+	return get_socket_value<array<Transform> >(this, input);
+}
+
+const array<Node*>& Node::get_node_array(const SocketType& input) const
+{
+	assert(input.type == SocketType::NODE_ARRAY);
+	return get_socket_value<array<Node*> >(this, input);
+}
+
+/* default values */
+bool Node::has_default_value(const SocketType& input) const
+{
+	const void *src = input.default_value;
+	void *dst = &get_socket_value<char>(this, input);
+	return memcmp(dst, src, input.size()) == 0;
+}
+
+template<typename T>
+static bool is_array_equal(const Node *node, const Node *other, const SocketType& socket)
+{
+	const array<T>* a = (const array<T>*)(((char*)node) + socket.struct_offset);
+	const array<T>* b = (const array<T>*)(((char*)other) + socket.struct_offset);
+	return *a == *b;
+}
+
+/* modified */
+bool Node::modified(const Node& other)
+{
+	assert(type == other.type);
+
+	typedef unordered_map<ustring, SocketType, ustringHash> map_type;
+	foreach(const map_type::value_type& it, type->inputs) {
+		const SocketType& socket = it.second;
+
+		if(socket.is_array()) {
+			bool equal = true;
+
+			switch(socket.type)
+			{
+				case SocketType::BOOLEAN_ARRAY: equal = is_array_equal<bool>(this, &other, socket); break;
+				case SocketType::FLOAT_ARRAY: equal = is_array_equal<float>(this, &other, socket); break;
+				case SocketType::INT_ARRAY: equal = is_array_equal<int>(this, &other, socket); break;
+				case SocketType::COLOR_ARRAY: equal = is_array_equal<float3>(this, &other, socket); break;
+				case SocketType::VECTOR_ARRAY: equal = is_array_equal<float3>(this, &other, socket); break;
+				case SocketType::POINT_ARRAY: equal = is_array_equal<float3>(this, &other, socket); break;
+				case SocketType::NORMAL_ARRAY: equal = is_array_equal<float3>(this, &other, socket); break;
+				case SocketType::POINT2_ARRAY: equal = is_array_equal<float2>(this, &other, socket); break;
+				case SocketType::STRING_ARRAY: equal = is_array_equal<ustring>(this, &other, socket); break;
+				case SocketType::TRANSFORM_ARRAY: equal = is_array_equal<Transform>(this, &other, socket); break;
+				case SocketType::NODE_ARRAY: equal = is_array_equal<void*>(this, &other, socket); break;
+				default: assert(0); break;
+			}
+
+			if(!equal) {
+				return true;
+			}
+		}
+		else {
+			const void *a = ((char*)this) + socket.struct_offset;
+			const void *b = ((char*)&other) + socket.struct_offset;
+			if(memcmp(a, b, socket.size()) != 0) {
+				return true;
+			}
+		}
+	}
+
+	return false;
+}
+
+CCL_NAMESPACE_END
+
diff --git a/intern/cycles/graph/node.h b/intern/cycles/graph/node.h
new file mode 100644
index 00000000000..33971fa714a
--- /dev/null
+++ b/intern/cycles/graph/node.h
@@ -0,0 +1,90 @@
+/*
+ * Copyright 2011-2016 Blender Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include "node_type.h"
+
+#include "util_map.h"
+#include "util_param.h"
+#include "util_vector.h"
+
+CCL_NAMESPACE_BEGIN
+
+struct Node;
+struct NodeType;
+struct Transform;
+
+/* Node */
+
+struct Node
+{
+	explicit Node(const NodeType *type, ustring name = ustring());
+	virtual ~Node();
+
+	/* set values */
+	void set(const SocketType& input, bool value);
+	void set(const SocketType& input, int value);
+	void set(const SocketType& input, float value);
+	void set(const SocketType& input, float2 value);
+	void set(const SocketType& input, float3 value);
+	void set(const SocketType& input, ustring value);
+	void set(const SocketType& input, const Transform& value);
+	void set(const SocketType& input, Node *value);
+
+	/* set array values. the memory from the input array will taken over
+	 * by the node and the input array will be empty after return */
+	void set(const SocketType& input, array<bool>& value);
+	void set(const SocketType& input, array<int>& value);
+	void set(const SocketType& input, array<float>& value);
+	void set(const SocketType& input, array<float2>& value);
+	void set(const SocketType& input, array<float3>& value);
+	void set(const SocketType& input, array<ustring>& value);
+	void set(const SocketType& input, array<Transform>& value);
+	void set(const SocketType& input, array<Node*>& value);
+
+	/* get values */
+	bool get_bool(const SocketType& input) const;
+	int get_int(const SocketType& input) const;
+	float get_float(const SocketType& input) const;
+	float2 get_float2(const SocketType& input) const;
+	float3 get_float3(const SocketType& input) const;
+	ustring get_string(const SocketType& input) const;
+	Transform get_transform(const SocketType& input) const;
+	Node *get_node(const SocketType& input) const;
+
+	/* get array values */
+	const array<bool>& get_bool_array(const SocketType& input) const;
+	const array<int>& get_int_array(const SocketType& input) const;
+	const array<float>& get_float_array(const SocketType& input) const;
+	const array<float2>& get_float2_array(const SocketType& input) const;
+	const array<float3>& get_float3_array(const SocketType& input) const;
+	const array<ustring>& get_string_array(const SocketType& input) const;
+	const array<Transform>& get_transform_array(const SocketType& input) const;
+	const array<Node*>& get_node_array(const SocketType& input) const;
+
+	/* default values */
+	bool has_default_value(const SocketType& input) const;
+
+	/* modified */
+	bool modified(const Node& other);
+
+	ustring name;
+	const NodeType *type;
+};
+
+CCL_NAMESPACE_END
+
diff --git a/intern/cycles/graph/node_enum.h b/intern/cycles/graph/node_enum.h
new file mode 100644
index 00000000000..2bae531c036
--- /dev/null
+++ b/intern/cycles/graph/node_enum.h
@@ -0,0 +1,48 @@
+/*
+ * Copyright 2011-2016 Blender Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include "util_map.h"
+#include "util_param.h"
+
+CCL_NAMESPACE_BEGIN
+
+/* Enum
+ *
+ * Utility class for enum values. */
+
+struct NodeEnum {
+	bool empty() const { return left.empty(); }
+	void insert(const char *x, int y) {
+		left[ustring(x)] = y;
+		right[y] = ustring(x);
+	}
+
+	bool exists(ustring x) const { return left.find(x) != left.end(); }
+	bool exists(int y) const { return right.find(y) != right.end(); }
+
+	int operator[](const char *x) const { return left.find(ustring(x))->second; }
+	int operator[](ustring x) const { return left.find(x)->second; }
+	ustring operator[](int y) const { return right.find(y)->second; }
+
+private:
+	unordered_map<ustring, int, ustringHash> left;
+	unordered_map<int, ustring> right;
+};
+
+CCL_NAMESPACE_END
+
diff --git a/intern/cycles/graph/node_type.cpp b/intern/cycles/graph/node_type.cpp
new file mode 100644
index 00000000000..dc879655d7f
--- /dev/null
+++ b/intern/cycles/graph/node_type.cpp
@@ -0,0 +1,190 @@
+/*
+ * Copyright 2011-2016 Blender Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "node_type.h"
+#include "util_foreach.h"
+#include "util_transform.h"
+
+CCL_NAMESPACE_BEGIN
+
+/* Node Socket Type */
+
+size_t SocketType::size() const
+{
+	return size(type);
+}
+
+bool SocketType::is_array() const
+{
+	return (type >= BOOLEAN_ARRAY);
+}
+
+size_t SocketType::size(Type type)
+{
+	switch(type)
+	{
+		case UNDEFINED: return 0;
+
+		case BOOLEAN: return sizeof(bool);
+		case FLOAT: return sizeof(float);
+		case INT: return sizeof(int);
+		case COLOR: return sizeof(float3);
+		case VECTOR: return sizeof(float3);
+		case POINT: return sizeof(float3);
+		case NORMAL: return sizeof(float3);
+		case POINT2: return sizeof(float2);
+		case CLOSURE: return 0;
+		case STRING: return sizeof(ustring);
+		case ENUM: return sizeof(int);
+		case TRANSFORM: return sizeof(Transform);
+		case NODE: return sizeof(void*);
+
+		case BOOLEAN_ARRAY: return sizeof(array<bool>);
+		case FLOAT_ARRAY: return sizeof(array<float>);
+		case INT_ARRAY: return sizeof(array<int>);
+		case COLOR_ARRAY: return sizeof(array<float3>);
+		case VECTOR_ARRAY: return sizeof(array<float3>);
+		case POINT_ARRAY: return sizeof(array<float3>);
+		case NORMAL_ARRAY: return sizeof(array<float3>);
+		case POINT2_ARRAY: return sizeof(array<float2>);
+		case STRING_ARRAY: return sizeof(array<ustring>);
+		case TRANSFORM_ARRAY: return sizeof(array<Transform>);
+		case NODE_ARRAY: return sizeof(array<void*>);
+	}
+
+	assert(0);
+	return 0;
+}
+
+size_t SocketType::max_size()
+{
+	return sizeof(Transform);
+}
+
+void *SocketType::zero_default_value()
+{
+	static Transform zero_transform = {{0, 0, 0, 0}, {0, 0, 0, 0}, {0, 0, 0, 0}, {0, 0, 0, 0}};
+	return &zero_transform;
+}
+
+ustring SocketType::type_name(Type type)
+{
+	static ustring names[] = {
+		ustring("undefined"),
+
+		ustring("boolean"),
+		ustring("float"),
+		ustring("int"),
+		ustring("color"),
+		ustring("vector"),
+		ustring("point"),
+		ustring("normal"),
+		ustring("point2"),
+		ustring("closure"),
+		ustring("string"),
+		ustring("enum"),
+		ustring("transform"),
+		ustring("node"),
+
+		ustring("array_boolean"),
+		ustring("array_float"),
+		ustring("array_int"),
+		ustring("array_color"),
+		ustring("array_vector"),
+		ustring("array_point"),
+		ustring("array_normal"),
+		ustring("array_point2"),
+		ustring("array_string"),
+		ustring("array_transform"),
+		ustring("array_node")};
+
+	return names[(int)type];
+}
+
+/* Node Type */
+
+NodeType::NodeType()
+{
+}
+
+NodeType::~NodeType()
+{
+}
+
+void NodeType::register_input(ustring name, ustring ui_name, SocketType::Type type, int struct_offset,
+                              const void *default_value, const NodeEnum *enum_values,
+							  const NodeType **node_type, int flags, int extra_flags)
+{
+	SocketType socket;
+	socket.name = name;
+	socket.ui_name = ui_name;
+	socket.type = type;
+	socket.struct_offset = struct_offset;
+	socket.default_value = default_value;
+	socket.enum_values = enum_values;
+	socket.node_type = node_type;
+	socket.flags = flags | extra_flags;
+	inputs[name] = socket;
+}
+
+void NodeType::register_output(ustring name, ustring ui_name, SocketType::Type type)
+{
+	SocketType socket;
+	socket.name = name;
+	socket.ui_name = ui_name;
+	socket.type = type;
+	socket.struct_offset = 0;
+	socket.default_value = NULL;
+	socket.enum_values = NULL;
+	socket.node_type = NULL;
+	socket.flags = SocketType::LINKABLE;
+	outputs[name] = socket;
+}
+
+/* Node Type Registry */
+
+unordered_map<ustring, NodeType, ustringHash>& NodeType::types()
+{
+	static unordered_map<ustring, NodeType, ustringHash> _types;
+	return _types;
+}
+
+NodeType *NodeType::add(const char *name_, CreateFunc create_)
+{
+	ustring name(name_);
+
+	if(types().find(name) != types().end()) {
+		fprintf(stderr, "Node type %s registered twice!\n", name_);
+		assert(0);
+		return NULL;
+	}
+
+	types()[name] = NodeType();
+
+	NodeType *type = &types()[name];
+	type->name = name;
+	type->create = create_;
+	return type;
+}
+
+const NodeType *NodeType::find(ustring name)
+{
+	unordered_map<ustring, NodeType, ustringHash>::iterator it = types().find(name);
+	return (it == types().end()) ? NULL : &it->second;
+}
+
+CCL_NAMESPACE_END
+
diff --git a/intern/cycles/graph/node_type.h b/intern/cycles/graph/node_type.h
new file mode 100644
index 00000000000..82ddd29da33
--- /dev/null
+++ b/intern/cycles/graph/node_type.h
@@ -0,0 +1,252 @@
+/*
+ * Copyright 2011-2016 Blender Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include "node_enum.h"
+
+#include "util_map.h"
+#include "util_param.h"
+#include "util_string.h"
+
+CCL_NAMESPACE_BEGIN
+
+struct Node;
+struct NodeType;
+
+/* Socket Type */
+
+struct SocketType
+{
+	enum Type
+	{
+		UNDEFINED,
+
+		BOOLEAN,
+		FLOAT,
+		INT,
+		COLOR,
+		VECTOR,
+		POINT,
+		NORMAL,
+		POINT2,
+		CLOSURE,
+		STRING,
+		ENUM,
+		TRANSFORM,
+		NODE,
+
+		BOOLEAN_ARRAY,
+		FLOAT_ARRAY,
+		INT_ARRAY,
+		COLOR_ARRAY,
+		VECTOR_ARRAY,
+		POINT_ARRAY,
+		NORMAL_ARRAY,
+		POINT2_ARRAY,
+		STRING_ARRAY,
+		TRANSFORM_ARRAY,
+		NODE_ARRAY,
+	};
+
+	enum Flags {
+		LINKABLE               = (1 << 0),
+		ANIMATABLE             = (1 << 1),
+
+		SVM_INTERNAL           = (1 << 2),
+		OSL_INTERNAL           = (1 << 3),
+		INTERNAL               = (1 << 2) | (1 << 3),
+
+		LINK_TEXTURE_GENERATED = (1 << 4),
+		LINK_TEXTURE_UV        = (1 << 5),
+		LINK_INCOMING          = (1 << 6),
+		LINK_NORMAL            = (1 << 7),
+		LINK_POSITION          = (1 << 8),
+		LINK_TANGENT           = (1 << 9),
+		DEFAULT_LINK_MASK      = (1 << 4) | (1 << 5) | (1 << 6) | (1 << 7) | (1 << 8) | (1 << 9)
+	};
+
+	ustring name;
+	Type type;
+	int struct_offset;
+	const void *default_value;
+	const NodeEnum *enum_values;
+	const NodeType **node_type;
+	int flags;
+	ustring ui_name;
+
+	size_t size() const;
+	bool is_array() const;
+	static size_t size(Type type);
+	static size_t max_size();
+	static ustring type_name(Type type);
+	static void *zero_default_value();
+};
+
+/* Node Type */
+
+struct NodeType
+{
+	explicit NodeType();
+	~NodeType();
+
+	void register_input(ustring name, ustring ui_name, SocketType::Type type,
+	                    int struct_offset, const void *default_value,
+						const NodeEnum *enum_values = NULL,
+						const NodeType **node_type = NULL,
+						int flags = 0, int extra_flags = 0);
+	void register_output(ustring name, ustring ui_name, SocketType::Type type);
+
+	typedef Node *(*CreateFunc)(const NodeType *type);
+	typedef unordered_map<ustring, SocketType, ustringHash> SocketMap;
+
+	ustring name;
+	SocketMap inputs;
+	SocketMap outputs;
+	CreateFunc create;
+
+	static NodeType *add(const char *name, CreateFunc create);
+	static const NodeType *find(ustring name);
+	static unordered_map<ustring, NodeType, ustringHash>& types();
+};
+
+/* Node Definition Macros */
+
+#define NODE_DECLARE                       \
+template<typename T>                       \
+static const NodeType *register_type();    \
+static Node *create(const NodeType *type); \
+static const NodeType *node_type;
+
+#define NODE_DEFINE(structname)                                                  \
+const NodeType *structname::node_type = structname::register_type<structname>(); \
+Node *structname::create(const NodeType*) { return new structname(); }           \
+template<typename T>                                                             \
+const NodeType *structname::register_type()
+
+/* Sock Definition Macros */
+
+#define SOCKET_OFFSETOF(T, name) (((char *)&(((T *)1)->name)) - (char *)1)
+#define SOCKET_SIZEOF(T, name) (sizeof(((T *)1)->name))
+#define SOCKET_DEFINE(name, ui_name, default_value, datatype, TYPE, flags, ...) \
+	{ \
+		static datatype defval = default_value; \
+		assert(SOCKET_SIZEOF(T, name) == sizeof(datatype)); \
+		type->register_input(ustring(#name), ustring(ui_name), TYPE, SOCKET_OFFSETOF(T, name), &defval, NULL, NULL, flags, ##__VA_ARGS__); \
+	}
+
+#define SOCKET_BOOLEAN(name, ui_name, default_value, ...) \
+	SOCKET_DEFINE(name, ui_name, default_value, bool, SocketType::BOOLEAN, 0, ##__VA_ARGS__)
+#define SOCKET_INT(name, ui_name, default_value, ...) \
+	SOCKET_DEFINE(name, ui_name, default_value, int, SocketType::INT, 0, ##__VA_ARGS__)
+#define SOCKET_FLOAT(name, ui_name, default_value, ...) \
+	SOCKET_DEFINE(name, ui_name, default_value, float, SocketType::FLOAT, 0, ##__VA_ARGS__)
+#define SOCKET_COLOR(name, ui_name, default_value, ...) \
+	SOCKET_DEFINE(name, ui_name, default_value, float3, SocketType::COLOR, 0, ##__VA_ARGS__)
+#define SOCKET_VECTOR(name, ui_name, default_value, ...) \
+	SOCKET_DEFINE(name, ui_name, default_value, float3, SocketType::VECTOR, 0, ##__VA_ARGS__)
+#define SOCKET_POINT(name, ui_name, default_value, ...) \
+	SOCKET_DEFINE(name, ui_name, default_value, float3, SocketType::POINT, 0, ##__VA_ARGS__)
+#define SOCKET_NORMAL(name, ui_name, default_value, ...) \
+	SOCKET_DEFINE(name, ui_name, default_value, float3, SocketType::NORMAL, 0, ##__VA_ARGS__)
+#define SOCKET_POINT2(name, ui_name, default_value, ...) \
+	SOCKET_DEFINE(name, ui_name, default_value, float2, SocketType::POINT2, 0, ##__VA_ARGS__)
+#define SOCKET_STRING(name, ui_name, default_value, ...) \
+	SOCKET_DEFINE(name, ui_name, default_value, ustring, SocketType::STRING, 0, ##__VA_ARGS__)
+#define SOCKET_TRANSFORM(name, ui_name, default_value, ...) \
+	SOCKET_DEFINE(name, ui_name, default_value, Transform, SocketType::TRANSFORM, 0, ##__VA_ARGS__)
+#define SOCKET_ENUM(name, ui_name, values, default_value, ...) \
+	{ \
+		static int defval = default_value; \
+		assert(SOCKET_SIZEOF(T, name) == sizeof(int)); \
+		type->register_input(ustring(#name), ustring(ui_name), SocketType::ENUM, SOCKET_OFFSETOF(T, name), &defval, &values, NULL, ##__VA_ARGS__); \
+	}
+#define SOCKET_NODE(name, ui_name, node_type, ...) \
+	{ \
+	    static Node *defval = NULL; \
+		assert(SOCKET_SIZEOF(T, name) == sizeof(Node*)); \
+		type->register_input(ustring(#name), ustring(ui_name), SocketType::NODE, SOCKET_OFFSETOF(T, name), &defval, NULL, node_type, ##__VA_ARGS__); \
+	}
+
+#define SOCKET_BOOLEAN_ARRAY(name, ui_name, default_value, ...) \
+	SOCKET_DEFINE(name, ui_name, default_value, array<bool>, SocketType::BOOLEAN_ARRAY, 0, ##__VA_ARGS__)
+#define SOCKET_INT_ARRAY(name, ui_name, default_value, ...) \
+	SOCKET_DEFINE(name, ui_name, default_value, array<int>, SocketType::INT_ARRAY, 0, ##__VA_ARGS__)
+#define SOCKET_FLOAT_ARRAY(name, ui_name, default_value, ...) \
+	SOCKET_DEFINE(name, ui_name, default_value, array<float>, SocketType::FLOAT_ARRAY, 0, ##__VA_ARGS__)
+#define SOCKET_COLOR_ARRAY(name, ui_name, default_value, ...) \
+	SOCKET_DEFINE(name, ui_name, default_value, array<float3>, SocketType::COLOR_ARRAY, 0, ##__VA_ARGS__)
+#define SOCKET_VECTOR_ARRAY(name, ui_name, default_value, ...) \
+	SOCKET_DEFINE(name, ui_name, default_value, array<float3>, SocketType::VECTOR_ARRAY, 0, ##__VA_ARGS__)
+#define SOCKET_POINT_ARRAY(name, ui_name, default_value, ...) \
+	SOCKET_DEFINE(name, ui_name, default_value, array<float3>, SocketType::POINT_ARRAY, 0, ##__VA_ARGS__)
+#define SOCKET_NORMAL_ARRAY(name, ui_name, default_value, ...) \
+	SOCKET_DEFINE(name, ui_name, default_value, array<float3>, SocketType::NORMAL_ARRAY, 0, ##__VA_ARGS__)
+#define SOCKET_POINT2_ARRAY(name, ui_name, default_value, ...) \
+	SOCKET_DEFINE(name, ui_name, default_value, array<float2>, SocketType::POINT2_ARRAY, 0, ##__VA_ARGS__)
+#define SOCKET_STRING_ARRAY(name, ui_name, default_value, ...) \
+	SOCKET_DEFINE(name, ui_name, default_value, array<ustring>, SocketType::STRING_ARRAY, 0, ##__VA_ARGS__)
+#define SOCKET_TRANSFORM_ARRAY(name, ui_name, default_value, ...) \
+	SOCKET_DEFINE(name, ui_name, default_value, array<Transform>, SocketType::TRANSFORM_ARRAY, 0, ##__VA_ARGS__)
+#define SOCKET_NODE_ARRAY(name, ui_name, node_type, ...) \
+	{ \
+	    static Node *defval = NULL; \
+		assert(SOCKET_SIZEOF(T, name) == sizeof(Node*)); \
+		type->register_input(ustring(#name), ustring(ui_name), SocketType::NODE_ARRAY, SOCKET_OFFSETOF(T, name), &defval, NULL, node_type, ##__VA_ARGS__); \
+	}
+
+#define SOCKET_IN_BOOLEAN(name, ui_name, default_value, ...) \
+	SOCKET_DEFINE(name, ui_name, default_value, bool, SocketType::BOOLEAN, SocketType::LINKABLE, ##__VA_ARGS__)
+#define SOCKET_IN_INT(name, ui_name, default_value, ...) \
+	SOCKET_DEFINE(name, ui_name, default_value, int, SocketType::INT, SocketType::LINKABLE, ##__VA_ARGS__)
+#define SOCKET_IN_FLOAT(name, ui_name, default_value, ...) \
+	SOCKET_DEFINE(name, ui_name, default_value, float, SocketType::FLOAT, SocketType::LINKABLE, ##__VA_ARGS__)
+#define SOCKET_IN_COLOR(name, ui_name, default_value, ...) \
+	SOCKET_DEFINE(name, ui_name, default_value, float3, SocketType::COLOR, SocketType::LINKABLE, ##__VA_ARGS__)
+#define SOCKET_IN_VECTOR(name, ui_name, default_value, ...) \
+	SOCKET_DEFINE(name, ui_name, default_value, float3, SocketType::VECTOR, SocketType::LINKABLE, ##__VA_ARGS__)
+#define SOCKET_IN_POINT(name, ui_name, default_value, ...) \
+	SOCKET_DEFINE(name, ui_name, default_value, float3, SocketType::POINT, SocketType::LINKABLE, ##__VA_ARGS__)
+#define SOCKET_IN_NORMAL(name, ui_name, default_value, ...) \
+	SOCKET_DEFINE(name, ui_name, default_value, float3, SocketType::NORMAL, SocketType::LINKABLE, ##__VA_ARGS__)
+#define SOCKET_IN_STRING(name, ui_name, default_value, ...) \
+	SOCKET_DEFINE(name, ui_name, default_value, ustring, SocketType::STRING, SocketType::LINKABLE, ##__VA_ARGS__)
+#define SOCKET_IN_CLOSURE(name, ui_name, ...) \
+	type->register_input(ustring(#name), ustring(ui_name), SocketType::CLOSURE, 0, NULL, NULL, NULL, SocketType::LINKABLE, ##__VA_ARGS__)
+
+#define SOCKET_OUT_BOOLEAN(name, ui_name) \
+	{ type->register_output(ustring(#name), ustring(ui_name), SocketType::BOOLEAN); }
+#define SOCKET_OUT_INT(name, ui_name) \
+	{ type->register_output(ustring(#name), ustring(ui_name), SocketType::INT); }
+#define SOCKET_OUT_FLOAT(name, ui_name) \
+	{ type->register_output(ustring(#name), ustring(ui_name), SocketType::FLOAT); }
+#define SOCKET_OUT_COLOR(name, ui_name) \
+	{ type->register_output(ustring(#name), ustring(ui_name), SocketType::COLOR); }
+#define SOCKET_OUT_VECTOR(name, ui_name) \
+	{ type->register_output(ustring(#name), ustring(ui_name), SocketType::VECTOR); }
+#define SOCKET_OUT_POINT(name, ui_name) \
+	{ type->register_output(ustring(#name), ustring(ui_name), SocketType::POINT); }
+#define SOCKET_OUT_NORMAL(name, ui_name) \
+	{ type->register_output(ustring(#name), ustring(ui_name), SocketType::NORMAL); }
+#define SOCKET_OUT_CLOSURE(name, ui_name) \
+	{ type->register_output(ustring(#name), ustring(ui_name), SocketType::CLOSURE); }
+#define SOCKET_OUT_STRING(name, ui_name) \
+	{ type->register_output(ustring(#name), ustring(ui_name), SocketType::STRING); }
+#define SOCKET_OUT_ENUM(name, ui_name) \
+	{ type->register_output(ustring(#name), ustring(ui_name), SocketType::ENUM); }
+
+CCL_NAMESPACE_END
+