svn merge ^/trunk/blender -r55372:55392

17 files changed, 3433 insertions, 1378 deletions

diff --git a/source/blender/makesrna/intern/CMakeLists.txt b/source/blender/makesrna/intern/CMakeLists.txt
index 44792951cad..0375868915b 100644
--- a/source/blender/makesrna/intern/CMakeLists.txt
+++ b/source/blender/makesrna/intern/CMakeLists.txt
@@ -265,6 +265,7 @@ blender_include_dirs(
 	../../imbuf
 	../../ikplugin
 	../../makesdna
+	../../nodes/
 	../../windowmanager
 	../../editors/include
 	../../render/extern/include
@@ -309,7 +310,6 @@ set(SRC
 	${SRC_RNA_INC}
 	rna_internal.h
 	rna_internal_types.h
-	rna_nodetree_types.h
 	rna_mesh_utils.h
 )
 
diff --git a/source/blender/makesrna/intern/rna_access.c b/source/blender/makesrna/intern/rna_access.c
index f3efbd0d53e..92ce8122597 100644
--- a/source/blender/makesrna/intern/rna_access.c
+++ b/source/blender/makesrna/intern/rna_access.c
@@ -282,6 +282,20 @@ static IDProperty *rna_idproperty_find(PointerRNA *ptr, const char *name)
 	return NULL;
 }
 
+static void rna_idproperty_free(PointerRNA *ptr, const char *name)
+{
+	IDProperty *group = RNA_struct_idprops(ptr, 0);
+
+	if (group) {
+		IDProperty *idprop = IDP_GetPropertyFromGroup(group, name);
+		if (idprop) {
+			IDP_RemFromGroup(group, idprop);
+			IDP_FreeProperty(idprop);
+			MEM_freeN(idprop);
+		}
+	}
+}
+
 static int rna_ensure_property_array_length(PointerRNA *ptr, PropertyRNA *prop)
 {
 	if (prop->magic == RNA_MAGIC) {
@@ -477,7 +491,7 @@ static const char *rna_ensure_property_description(PropertyRNA *prop)
 			description = ((IDProperty *)prop)->name;  /* XXX - not correct */
 	}
 
-	return TIP_(description);
+	return description;
 }
 
 static const char *rna_ensure_property_name(PropertyRNA *prop)
@@ -489,7 +503,7 @@ static const char *rna_ensure_property_name(PropertyRNA *prop)
 	else
 		name = ((IDProperty *)prop)->name;
 
-	return CTX_IFACE_(prop->translation_context, name);
+	return name;
 }
 
 /* Structs */
@@ -515,6 +529,11 @@ const char *RNA_struct_ui_name(StructRNA *type)
 	return CTX_IFACE_(type->translation_context, type->name);
 }
 
+const char *RNA_struct_ui_name_raw(StructRNA *type)
+{
+	return type->name;
+}
+
 int RNA_struct_ui_icon(StructRNA *type)
 {
 	if (type)
@@ -528,6 +547,11 @@ const char *RNA_struct_ui_description(StructRNA *type)
 	return TIP_(type->description);
 }
 
+const char *RNA_struct_ui_description_raw(StructRNA *type)
+{
+	return type->description;
+}
+
 const char *RNA_struct_translation_context(StructRNA *type)
 {
 	return type->translation_context ? type->translation_context : BLF_I18NCONTEXT_DEFAULT;
@@ -778,7 +802,7 @@ const char *RNA_property_identifier(PropertyRNA *prop)
 
 const char *RNA_property_description(PropertyRNA *prop)
 {
-	return rna_ensure_property_description(prop);
+	return TIP_(rna_ensure_property_description(prop));
 }
 
 PropertyType RNA_property_type(PropertyRNA *prop)
@@ -1401,11 +1425,21 @@ int RNA_property_enum_bitflag_identifiers(bContext *C, PointerRNA *ptr, Property
 
 const char *RNA_property_ui_name(PropertyRNA *prop)
 {
+	return CTX_IFACE_(prop->translation_context, rna_ensure_property_name(prop));
+}
+
+const char *RNA_property_ui_name_raw(PropertyRNA *prop)
+{
 	return rna_ensure_property_name(prop);
 }
 
 const char *RNA_property_ui_description(PropertyRNA *prop)
 {
+	return TIP_(rna_ensure_property_description(prop));
+}
+
+const char *RNA_property_ui_description_raw(PropertyRNA *prop)
+{
 	return rna_ensure_property_description(prop);
 }
 
@@ -4797,6 +4831,13 @@ bool RNA_property_is_set(PointerRNA *ptr, PropertyRNA *prop)
 	}
 }
 
+void RNA_property_unset(PointerRNA *ptr, PropertyRNA *prop)
+{
+	if (prop->flag & PROP_IDPROPERTY) {
+		rna_idproperty_free(ptr, prop->identifier);
+	}
+}
+
 bool RNA_struct_property_is_set_ex(PointerRNA *ptr, const char *identifier, bool use_ghost)
 {
 	PropertyRNA *prop = RNA_struct_find_property(ptr, identifier);
@@ -4825,6 +4866,15 @@ bool RNA_struct_property_is_set(PointerRNA *ptr, const char *identifier)
 	}
 }
 
+void RNA_struct_property_unset(PointerRNA *ptr, const char *identifier)
+{
+	PropertyRNA *prop = RNA_struct_find_property(ptr, identifier);
+
+	if (prop) {
+		RNA_property_unset(ptr, prop);
+	}
+}
+
 bool RNA_property_is_idprop(PropertyRNA *prop)
 {
 	return (prop->magic != RNA_MAGIC);
@@ -5190,6 +5240,11 @@ const char *RNA_function_identifier(FunctionRNA *func)
 
 const char *RNA_function_ui_description(FunctionRNA *func)
 {
+	return TIP_(func->description);
+}
+
+const char *RNA_function_ui_description_raw(FunctionRNA *func)
+{
 	return func->description;
 }
 
diff --git a/source/blender/makesrna/intern/rna_color.c b/source/blender/makesrna/intern/rna_color.c
index c5f6744bcbe..98672f2fca2 100644
--- a/source/blender/makesrna/intern/rna_color.c
+++ b/source/blender/makesrna/intern/rna_color.c
@@ -327,7 +327,7 @@ static void rna_ColorRamp_update(Main *bmain, Scene *UNUSED(scene), PointerRNA *
 
 				for (node = ntree->nodes.first; node; node = node->next) {
 					if (ELEM3(node->type, SH_NODE_VALTORGB, CMP_NODE_VALTORGB, TEX_NODE_VALTORGB)) {
-						ED_node_generic_update(bmain, ntree, node);
+						ED_node_tag_update_nodetree(bmain, ntree);
 					}
 				}
 			}
diff --git a/source/blender/makesrna/intern/rna_define.c b/source/blender/makesrna/intern/rna_define.c
index c92777af8fd..02cacb00bec 100644
--- a/source/blender/makesrna/intern/rna_define.c
+++ b/source/blender/makesrna/intern/rna_define.c
@@ -458,6 +458,78 @@ static int rna_validate_identifier(const char *identifier, char *error, int prop
 	return 1;
 }
 
+void RNA_identifier_sanitize(char *identifier, int property)
+{
+	int a = 0;
+	
+	/*  list from http://docs.python.org/py3k/reference/lexical_analysis.html#keywords */
+	static const char *kwlist[] = {
+		/* "False", "None", "True", */
+		"and", "as", "assert", "break",
+		"class", "continue", "def", "del", "elif", "else", "except",
+		"finally", "for", "from", "global", "if", "import", "in",
+		"is", "lambda", "nonlocal", "not", "or", "pass", "raise",
+		"return", "try", "while", "with", "yield", NULL
+	};
+	
+	
+	if (!isalpha(identifier[0])) {
+		/* first character failed isalpha() check */
+		identifier[0] = '_';
+	}
+	
+	for (a = 0; identifier[a]; a++) {
+		if (DefRNA.preprocess && property) {
+			if (isalpha(identifier[a]) && isupper(identifier[a])) {
+				/* property names must contain lower case characters only */
+				identifier[a] = tolower(identifier[a]);
+			}
+		}
+		
+		if (identifier[a] == '_') {
+			continue;
+		}
+
+		if (identifier[a] == ' ') {
+			/* spaces are not okay in identifier names */
+			identifier[a] = '_';
+		}
+
+		if (isalnum(identifier[a]) == 0) {
+			/* one of the characters failed an isalnum() check and is not an underscore */
+			identifier[a] = '_';
+		}
+	}
+	
+	for (a = 0; kwlist[a]; a++) {
+		if (strcmp(identifier, kwlist[a]) == 0) {
+			/* this keyword is reserved by python.
+			 * just replace the last character by '_' to keep it readable.
+			 */
+			identifier[strlen(identifier) - 1] = '_';
+			break;
+		}
+	}
+
+	if (property) {
+		static const char *kwlist_prop[] = {
+			/* not keywords but reserved all the same because py uses */
+			"keys", "values", "items", "get",
+			NULL
+		};
+
+		for (a = 0; kwlist_prop[a]; a++) {
+			if (strcmp(identifier, kwlist_prop[a]) == 0) {
+				/* this keyword is reserved by python.
+				* just replace the last character by '_' to keep it readable.
+				*/
+				identifier[strlen(identifier) - 1] = '_';
+				break;
+			}
+		}
+	}
+}
+
 /* Blender Data Definition */
 
 BlenderRNA *RNA_create(void)
diff --git a/source/blender/makesrna/intern/rna_lamp.c b/source/blender/makesrna/intern/rna_lamp.c
index 912f4d914cb..7fee67cd569 100644
--- a/source/blender/makesrna/intern/rna_lamp.c
+++ b/source/blender/makesrna/intern/rna_lamp.c
@@ -42,6 +42,7 @@
 
 #include "MEM_guardedalloc.h"
 
+#include "BKE_context.h"
 #include "BKE_depsgraph.h"
 #include "BKE_main.h"
 #include "BKE_texture.h"
@@ -169,14 +170,14 @@ static void rna_Lamp_spot_size_set(PointerRNA *ptr, float value)
 	la->spotsize = RAD2DEGF(value);
 }
 
-static void rna_Lamp_use_nodes_update(Main *blain, Scene *scene, PointerRNA *ptr)
+static void rna_Lamp_use_nodes_update(bContext *C, PointerRNA *ptr)
 {
 	Lamp *la = (Lamp *)ptr->data;
 
 	if (la->use_nodes && la->nodetree == NULL)
-		ED_node_shader_default(scene, &la->id);
+		ED_node_shader_default(C, &la->id);
 	
-	rna_Lamp_update(blain, scene, ptr);
+	rna_Lamp_update(CTX_data_main(C), CTX_data_scene(C), ptr);
 }
 
 #else
@@ -414,6 +415,7 @@ static void rna_def_lamp(BlenderRNA *brna)
 	prop = RNA_def_property(srna, "use_nodes", PROP_BOOLEAN, PROP_NONE);
 	RNA_def_property_boolean_sdna(prop, NULL, "use_nodes", 1);
 	RNA_def_property_clear_flag(prop, PROP_ANIMATABLE);
+	RNA_def_property_flag(prop, PROP_CONTEXT_UPDATE);
 	RNA_def_property_ui_text(prop, "Use Nodes", "Use shader nodes to render the lamp");
 	RNA_def_property_update(prop, 0, "rna_Lamp_use_nodes_update");
 	
diff --git a/source/blender/makesrna/intern/rna_main_api.c b/source/blender/makesrna/intern/rna_main_api.c
index de7911aeccb..f5c23923f81 100644
--- a/source/blender/makesrna/intern/rna_main_api.c
+++ b/source/blender/makesrna/intern/rna_main_api.c
@@ -238,23 +238,32 @@ static void rna_Main_materials_remove(Main *bmain, ReportList *reports, PointerR
 	}
 }
 
-static bNodeTree *rna_Main_nodetree_new(Main *bmain, const char *name, int type)
+static EnumPropertyItem *rna_Main_nodetree_type_itemf(bContext *UNUSED(C), PointerRNA *UNUSED(ptr), PropertyRNA *UNUSED(prop), int *free)
 {
-	bNodeTree *tree = ntreeAddTree(bmain, name, type, NODE_GROUP);
-
-	id_us_min(&tree->id);
-	return tree;
+	return rna_node_tree_type_itemf(NULL, NULL, free);
+}
+static struct bNodeTree *rna_Main_nodetree_new(Main *bmain, const char *name, int type)
+{
+	bNodeTreeType *typeinfo = rna_node_tree_type_from_enum(type);
+	if (typeinfo) {
+		bNodeTree *ntree = ntreeAddTree(bmain, name, typeinfo->idname);
+		
+		id_us_min(&ntree->id);
+		return ntree;
+	}
+	else
+		return NULL;
 }
-static void rna_Main_nodetree_remove(Main *bmain, ReportList *reports, PointerRNA *tree_ptr)
+static void rna_Main_nodetree_remove(Main *bmain, ReportList *reports, PointerRNA *ntree_ptr)
 {
-	bNodeTree *tree = tree_ptr->data;
-	if (ID_REAL_USERS(tree) <= 0) {
-		BKE_libblock_free(&bmain->nodetree, tree);
-		RNA_POINTER_INVALIDATE(tree_ptr);
+	bNodeTree *ntree = ntree_ptr->data;
+	if (ID_REAL_USERS(ntree) <= 0) {
+		BKE_libblock_free(&bmain->nodetree, ntree);
+		RNA_POINTER_INVALIDATE(ntree_ptr);
 	}
 	else {
 		BKE_reportf(reports, RPT_ERROR, "Node tree '%s' must have zero users to be removed, found %d",
-		            tree->id.name + 2, ID_REAL_USERS(tree));
+		            ntree->id.name + 2, ID_REAL_USERS(ntree));
 	}
 }
 
@@ -1094,10 +1103,8 @@ void RNA_def_main_node_groups(BlenderRNA *brna, PropertyRNA *cprop)
 	PropertyRNA *parm;
 	PropertyRNA *prop;
 
-	static EnumPropertyItem node_nodetree_items[] = {
-		{0, "SHADER",       0,    "Shader",       ""},
-		{1, "COMPOSITE",    0,    "Composite",    ""},
-		{2, "TEXTURE",      0,    "Texture",      ""},
+	static EnumPropertyItem dummy_items[] = {
+		{0, "DUMMY", 0, "", ""},
 		{0, NULL, 0, NULL, NULL}
 	};
 
@@ -1110,7 +1117,8 @@ void RNA_def_main_node_groups(BlenderRNA *brna, PropertyRNA *cprop)
 	RNA_def_function_ui_description(func, "Add a new node tree to the main database");
 	parm = RNA_def_string(func, "name", "NodeGroup", 0, "", "New name for the datablock");
 	RNA_def_property_flag(parm, PROP_REQUIRED);
-	parm = RNA_def_enum(func, "type", node_nodetree_items, 0, "Type", "The type of node_group to add");
+	parm = RNA_def_enum(func, "type", dummy_items, 0, "Type", "The type of node_group to add");
+	RNA_def_property_enum_funcs(parm, NULL, NULL, "rna_Main_nodetree_type_itemf");
 	RNA_def_property_flag(parm, PROP_REQUIRED);
 	/* return type */
 	parm = RNA_def_pointer(func, "tree", "NodeTree", "", "New node tree datablock");
diff --git a/source/blender/makesrna/intern/rna_material.c b/source/blender/makesrna/intern/rna_material.c
index d1c81200e6a..8936609c7db 100644
--- a/source/blender/makesrna/intern/rna_material.c
+++ b/source/blender/makesrna/intern/rna_material.c
@@ -82,6 +82,7 @@ EnumPropertyItem ramp_blend_items[] = {
 #include "DNA_node_types.h"
 #include "DNA_object_types.h"
 
+#include "BKE_context.h"
 #include "BKE_depsgraph.h"
 #include "BKE_main.h"
 #include "BKE_material.h"
@@ -111,7 +112,7 @@ static void rna_Material_update_previews(Main *bmain, Scene *scene, PointerRNA *
 	Material *ma = ptr->id.data;
 	
 	if (ma->nodetree)
-		ntreeClearPreview(ma->nodetree);
+		BKE_node_preview_clear_tree(ma->nodetree);
 		
 	WM_main_add_notifier(NC_MATERIAL | ND_SHADING, ma);
 }
@@ -273,7 +274,7 @@ static void rna_Material_use_diffuse_ramp_set(PointerRNA *ptr, int value)
 	else ma->mode &= ~MA_RAMP_COL;
 
 	if ((ma->mode & MA_RAMP_COL) && ma->ramp_col == NULL)
-		ma->ramp_col = add_colorband(0);
+		ma->ramp_col = add_colorband(false);
 }
 
 static void rna_Material_use_specular_ramp_set(PointerRNA *ptr, int value)
@@ -284,17 +285,17 @@ static void rna_Material_use_specular_ramp_set(PointerRNA *ptr, int value)
 	else ma->mode &= ~MA_RAMP_SPEC;
 
 	if ((ma->mode & MA_RAMP_SPEC) && ma->ramp_spec == NULL)
-		ma->ramp_spec = add_colorband(0);
+		ma->ramp_spec = add_colorband(false);
 }
 
-static void rna_Material_use_nodes_update(Main *bmain, Scene *scene, PointerRNA *ptr)
+static void rna_Material_use_nodes_update(bContext *C, PointerRNA *ptr)
 {
 	Material *ma = (Material *)ptr->data;
 
 	if (ma->use_nodes && ma->nodetree == NULL)
-		ED_node_shader_default(scene, &ma->id);
+		ED_node_shader_default(C, &ma->id);
 	
-	rna_Material_update(bmain, scene, ptr);
+	rna_Material_update(CTX_data_main(C), CTX_data_scene(C), ptr);
 }
 
 static EnumPropertyItem *rna_Material_texture_coordinates_itemf(bContext *UNUSED(C), PointerRNA *ptr,
@@ -2024,6 +2025,7 @@ void RNA_def_material(BlenderRNA *brna)
 	prop = RNA_def_property(srna, "use_nodes", PROP_BOOLEAN, PROP_NONE);
 	RNA_def_property_boolean_sdna(prop, NULL, "use_nodes", 1);
 	RNA_def_property_clear_flag(prop, PROP_ANIMATABLE);
+	RNA_def_property_flag(prop, PROP_CONTEXT_UPDATE);
 	RNA_def_property_ui_text(prop, "Use Nodes", "Use shader nodes to render the material");
 	RNA_def_property_update(prop, 0, "rna_Material_use_nodes_update");
 
diff --git a/source/blender/makesrna/intern/rna_nodetree.c b/source/blender/makesrna/intern/rna_nodetree.c
index e7c030d5cdf..b558e6d2eeb 100644
--- a/source/blender/makesrna/intern/rna_nodetree.c
+++ b/source/blender/makesrna/intern/rna_nodetree.c
@@ -26,6 +26,7 @@
 
 #include <stdlib.h>
 #include <string.h>
+#include <limits.h>
 
 #include "BLI_listbase.h"
 #include "BLI_math.h"
@@ -61,11 +62,22 @@
 
 #include "MEM_guardedalloc.h"
 
-EnumPropertyItem nodetree_type_items[] = {
-	{NTREE_SHADER,      "SHADER",       ICON_MATERIAL,      "Shader",       "Shader nodes"},
-	{NTREE_TEXTURE,     "TEXTURE",      ICON_TEXTURE,       "Texture",      "Texture nodes"},
-	{NTREE_COMPOSIT,    "COMPOSITING",  ICON_RENDERLAYERS,  "Compositing",  "Compositing nodes"},
-	{0, NULL, 0, NULL, NULL}
+EnumPropertyItem node_socket_in_out_items[] = {
+	{ SOCK_IN, "IN", 0, "Input", "" },
+	{ SOCK_OUT, "OUT", 0, "Output", "" },
+	{ 0, NULL, 0, NULL, NULL }
+};
+
+EnumPropertyItem node_socket_type_items[] = {
+    {SOCK_CUSTOM,  "CUSTOM",    0,    "Custom",    ""},
+    {SOCK_FLOAT,   "VALUE",     0,    "Value",     ""},
+    {SOCK_INT,     "INT",       0,    "Int",       ""},
+    {SOCK_BOOLEAN, "BOOLEAN",   0,    "Boolean",   ""},
+    {SOCK_VECTOR,  "VECTOR",    0,    "Vector",    ""},
+    {SOCK_STRING,  "STRING",    0,    "String",    ""},
+    {SOCK_RGBA,    "RGBA",      0,    "RGBA",      ""},
+    {SOCK_SHADER,  "SHADER",    0,    "Shader",    ""},
+    {0, NULL, 0, NULL, NULL}
 };
 
 EnumPropertyItem node_quality_items[] = {
@@ -85,17 +97,15 @@ EnumPropertyItem node_chunksize_items[] = {
 	{0, NULL, 0, NULL, NULL}
 };
 
-EnumPropertyItem node_socket_type_items[] = {
-	{SOCK_FLOAT,   "VALUE",     0,    "Value",     ""},
-	{SOCK_VECTOR,  "VECTOR",    0,    "Vector",    ""},
-	{SOCK_RGBA,    "RGBA",      0,    "RGBA",      ""},
-	{SOCK_SHADER,  "SHADER",    0,    "Shader",    ""},
-	{SOCK_BOOLEAN, "BOOLEAN",   0,    "Boolean",   ""},
-	{SOCK_MESH,    "MESH",      0,    "Mesh",      ""},
-	{SOCK_INT,     "INT",       0,    "Int",       ""},
-	{SOCK_STRING,  "STRING",    0,    "String",    ""},
-	{0, NULL, 0, NULL, NULL}
-};
+#define DEF_ICON_BLANK_SKIP
+#define DEF_ICON(name) {ICON_##name, (#name), 0, (#name), ""},
+#define DEF_VICO(name)
+EnumPropertyItem node_icon_items[] = {
+#include "UI_icons.h"
+	{0, NULL, 0, NULL, NULL}};
+#undef DEF_ICON_BLANK_SKIP
+#undef DEF_ICON
+#undef DEF_VICO
 
 EnumPropertyItem node_math_items[] = {
 	{ 0, "ADD",          0, "Add",          ""},
@@ -174,52 +184,20 @@ EnumPropertyItem prop_wave_items[] = {
 };
 #endif
 
-/* Add any new socket value subtype here.
- * When adding a new subtype here, make sure you also add it
- * to the subtype definitions in DNA_node_types.h.
- * This macro is used by the RNA and the internal converter functions
- * to define all socket subtypes. The SUBTYPE macro must be defined
- * before using this macro, and undefined afterwards.
- */
-#define NODE_DEFINE_SUBTYPES_INT \
-    SUBTYPE(INT, Int, NONE, None) \
-    SUBTYPE(INT, Int, UNSIGNED, Unsigned)
-
-#define NODE_DEFINE_SUBTYPES_FLOAT \
-    SUBTYPE(FLOAT, Float, NONE, None) \
-    SUBTYPE(FLOAT, Float, UNSIGNED, Unsigned) \
-    SUBTYPE(FLOAT, Float, PERCENTAGE, Percentage) \
-    SUBTYPE(FLOAT, Float, FACTOR, Factor) \
-    SUBTYPE(FLOAT, Float, ANGLE, Angle) \
-    SUBTYPE(FLOAT, Float, TIME, Time) \
-    SUBTYPE(FLOAT, Float, DISTANCE, Distance)
-
-#define NODE_DEFINE_SUBTYPES_STRING \
-    SUBTYPE(STRING, String, NONE, None) \
-    SUBTYPE(STRING, String, FILEPATH, Filepath)
-
-#define NODE_DEFINE_SUBTYPES_VECTOR \
-    SUBTYPE(VECTOR, Vector, NONE, None) \
-    SUBTYPE(VECTOR, Vector, TRANSLATION, Translation) \
-    SUBTYPE(VECTOR, Vector, DIRECTION, Direction) \
-    SUBTYPE(VECTOR, Vector, VELOCITY, Velocity) \
-    SUBTYPE(VECTOR, Vector, ACCELERATION, Acceleration) \
-    SUBTYPE(VECTOR, Vector, EULER, Euler) \
-    SUBTYPE(VECTOR, Vector, XYZ, XYZ)
-
-#define NODE_DEFINE_SUBTYPES \
-    NODE_DEFINE_SUBTYPES_INT \
-    NODE_DEFINE_SUBTYPES_FLOAT \
-    NODE_DEFINE_SUBTYPES_STRING \
-    NODE_DEFINE_SUBTYPES_VECTOR \
-
 #ifdef RNA_RUNTIME
 
 #include "BLI_linklist.h"
+#include "BLI_string.h"
+
+#include "BKE_context.h"
+#include "BKE_idprop.h"
 
 #include "BKE_global.h"
 
 #include "ED_node.h"
+#include "ED_render.h"
+
+#include "NOD_socket.h"
 
 #include "RE_engine.h"
 #include "RE_pipeline.h"
@@ -227,42 +205,947 @@ EnumPropertyItem prop_wave_items[] = {
 #include "DNA_scene_types.h"
 #include "WM_api.h"
 
-static StructRNA *rna_Node_refine(struct PointerRNA *ptr)
+
+int rna_node_tree_type_to_enum(bNodeTreeType *typeinfo)
 {
-	bNode *node = (bNode *)ptr->data;
+	int i = 0, result = -1;
+	NODE_TREE_TYPES_BEGIN(nt)
+		if (nt == typeinfo) {
+			result = i;
+			break;
+		}
+		++i;
+	NODE_TREE_TYPES_END
+	return result;
+}
+
+int rna_node_tree_idname_to_enum(const char *idname)
+{
+	int i = 0, result = -1;
+	NODE_TREE_TYPES_BEGIN(nt)
+		if (STREQ(nt->idname, idname)) {
+			result = i;
+			break;
+		}
+		++i;
+	NODE_TREE_TYPES_END
+	return result;
+}
+
+bNodeTreeType *rna_node_tree_type_from_enum(int value)
+{
+	int i = 0;
+	bNodeTreeType *result = NULL;
+	NODE_TREE_TYPES_BEGIN(nt)
+		if (i == value) {
+			result = nt;
+			break;
+		}
+		++i;
+	NODE_TREE_TYPES_END
+	return result;
+}
 
-	switch (node->type) {
+EnumPropertyItem *rna_node_tree_type_itemf(void *data, int (*poll)(void *data, bNodeTreeType *), int *free)
+{
+	EnumPropertyItem tmp = {0, "", 0, "", ""};
+	EnumPropertyItem *item = NULL;
+	int totitem = 0, i = 0;
+	
+	NODE_TREE_TYPES_BEGIN(nt)
+		if (poll && !poll(data, nt)) {
+			++i;
+			continue;
+		}
 		
-		#define DefNode(Category, ID, DefFunc, EnumName, StructName, UIName, UIDesc) \
-			case ID: return &RNA_##Category##StructName;
-				
-		#include "rna_nodetree_types.h"
+		tmp.value = i;
+		tmp.identifier = nt->idname;
+		tmp.icon = nt->ui_icon;
+		tmp.name = nt->ui_name;
+		tmp.description = nt->ui_description;
 		
-		case NODE_GROUP:
-			return &RNA_NodeGroup;
-		case NODE_FRAME:
-			return &RNA_NodeFrame;
-		case NODE_REROUTE:
-			return &RNA_NodeReroute;
-		default:
-			return &RNA_Node;
+		RNA_enum_item_add(&item, &totitem, &tmp);
+		
+		++i;
+	NODE_TREE_TYPES_END
+
+	RNA_enum_item_end(&item, &totitem);
+	*free = 1;
+	
+	return item;
+}
+
+int rna_node_type_to_enum(bNodeType *typeinfo)
+{
+	int i = 0, result = -1;
+	NODE_TYPES_BEGIN(ntype)
+		if (ntype == typeinfo) {
+			result = i;
+			break;
+		}
+		++i;
+	NODE_TYPES_END
+	return result;
+}
+
+int rna_node_idname_to_enum(const char *idname)
+{
+	int i = 0, result = -1;
+	NODE_TYPES_BEGIN(ntype)
+		if (STREQ(ntype->idname, idname)) {
+			result = i;
+			break;
+		}
+		++i;
+	NODE_TYPES_END
+	return result;
+}
+
+bNodeType *rna_node_type_from_enum(int value)
+{
+	int i = 0;
+	bNodeType *result = NULL;
+	NODE_TYPES_BEGIN(ntype)
+		if (i == value) {
+			result = ntype;
+			break;
+		}
+		++i;
+	NODE_TYPES_END
+	return result;
+}
+
+EnumPropertyItem *rna_node_type_itemf(void *data, int (*poll)(void *data, bNodeType *), int *free)
+{
+	EnumPropertyItem *item = NULL;
+	EnumPropertyItem tmp = {0, "", 0, "", ""};
+	int totitem = 0, i = 0;
+	
+	NODE_TYPES_BEGIN(ntype)
+		if (poll && !poll(data, ntype)) {
+			++i;
+			continue;
+		}
+		
+		tmp.value = i;
+		tmp.identifier = ntype->idname;
+		tmp.icon = ntype->ui_icon;
+		tmp.name = ntype->ui_name;
+		tmp.description = ntype->ui_description;
+		
+		RNA_enum_item_add(&item, &totitem, &tmp);
+		
+		++i;
+	NODE_TYPES_END
+	RNA_enum_item_end(&item, &totitem);
+	*free = 1;
+	
+	return item;
+}
+
+int rna_node_socket_type_to_enum(bNodeSocketType *typeinfo)
+{
+	int i = 0, result = -1;
+	NODE_SOCKET_TYPES_BEGIN(stype)
+		if (stype == typeinfo) {
+			result = i;
+			break;
+		}
+		++i;
+	NODE_SOCKET_TYPES_END
+	return result;
+}
+
+int rna_node_socket_idname_to_enum(const char *idname)
+{
+	int i = 0, result = -1;
+	NODE_SOCKET_TYPES_BEGIN(stype)
+		if (STREQ(stype->idname, idname)) {
+			result = i;
+			break;
+		}
+		++i;
+	NODE_SOCKET_TYPES_END
+	return result;
+}
+
+bNodeSocketType *rna_node_socket_type_from_enum(int value)
+{
+	int i = 0;
+	bNodeSocketType *result = NULL;
+	NODE_SOCKET_TYPES_BEGIN(stype)
+		if (i == value) {
+			result = stype;
+			break;
+		}
+		++i;
+	NODE_SOCKET_TYPES_END
+	return result;
+}
+
+EnumPropertyItem *rna_node_socket_type_itemf(void *data, int (*poll)(void *data, bNodeSocketType *), int *free)
+{
+	EnumPropertyItem *item = NULL;
+	EnumPropertyItem tmp = {0, "", 0, "", ""};
+	int totitem = 0, i = 0;
+	StructRNA *srna;
+	
+	NODE_SOCKET_TYPES_BEGIN(stype)
+		if (poll && !poll(data, stype)) {
+			++i;
+			continue;
+		}
+		
+		srna = stype->ext_socket.srna;
+		tmp.value = i;
+		tmp.identifier = stype->idname;
+		tmp.icon = RNA_struct_ui_icon(srna);
+		tmp.name = RNA_struct_ui_name(srna);
+		tmp.description = RNA_struct_ui_description(srna);
+		
+		RNA_enum_item_add(&item, &totitem, &tmp);
+		
+		++i;
+	NODE_SOCKET_TYPES_END
+	RNA_enum_item_end(&item, &totitem);
+	*free = 1;
+	
+	return item;
+}
+
+static EnumPropertyItem *rna_node_static_type_itemf(bContext *UNUSED(C), PointerRNA *ptr, PropertyRNA *UNUSED(prop), int *free)
+{
+	EnumPropertyItem *item = NULL;
+	EnumPropertyItem tmp;
+	int totitem = 0;
+	
+	/* hack, don't want to add include path to RNA just for this, since in the future RNA types
+	 * for nodes should be defined locally at runtime anyway ...
+	 */
+	
+	tmp.value = NODE_CUSTOM;
+	tmp.identifier = "CUSTOM";
+	tmp.name = "Custom";
+	tmp.description = "Custom Node";
+	tmp.icon = ICON_NONE;
+	RNA_enum_item_add(&item, &totitem, &tmp);
+	
+	tmp.value = NODE_UNDEFINED;
+	tmp.identifier = "UNDEFINED";
+	tmp.name = "UNDEFINED";
+	tmp.description = "";
+	tmp.icon = ICON_NONE;
+	RNA_enum_item_add(&item, &totitem, &tmp);
+	
+	#define DefNode(Category, ID, DefFunc, EnumName, StructName, UIName, UIDesc) \
+	if (STREQ(#Category, "Node")) { \
+		tmp.value = ID; \
+		tmp.identifier = EnumName; \
+		tmp.name = UIName; \
+		tmp.description = UIDesc; \
+		tmp.icon = ICON_NONE; \
+		RNA_enum_item_add(&item, &totitem, &tmp); \
+	}
+	#include "../../nodes/NOD_static_types.h"
+	#undef DefNode
+	
+	if (RNA_struct_is_a(ptr->type, &RNA_ShaderNode)) {
+		#define DefNode(Category, ID, DefFunc, EnumName, StructName, UIName, UIDesc) \
+		if (STREQ(#Category, "ShaderNode")) { \
+			tmp.value = ID; \
+			tmp.identifier = EnumName; \
+			tmp.name = UIName; \
+			tmp.description = UIDesc; \
+			tmp.icon = ICON_NONE; \
+			RNA_enum_item_add(&item, &totitem, &tmp); \
+		}
+		#include "../../nodes/NOD_static_types.h"
+		#undef DefNode
+	}
+
+	if (RNA_struct_is_a(ptr->type, &RNA_CompositorNode)) {
+		#define DefNode(Category, ID, DefFunc, EnumName, StructName, UIName, UIDesc) \
+		if (STREQ(#Category, "CompositorNode")) { \
+			tmp.value = ID; \
+			tmp.identifier = EnumName; \
+			tmp.name = UIName; \
+			tmp.description = UIDesc; \
+			tmp.icon = ICON_NONE; \
+			RNA_enum_item_add(&item, &totitem, &tmp); \
+		}
+		#include "../../nodes/NOD_static_types.h"
+		#undef DefNode
+	}
+	
+	if (RNA_struct_is_a(ptr->type, &RNA_TextureNode)) {
+		#define DefNode(Category, ID, DefFunc, EnumName, StructName, UIName, UIDesc) \
+		if (STREQ(#Category, "TextureNode")) { \
+			tmp.value = ID; \
+			tmp.identifier = EnumName; \
+			tmp.name = UIName; \
+			tmp.description = UIDesc; \
+			tmp.icon = ICON_NONE; \
+			RNA_enum_item_add(&item, &totitem, &tmp); \
+		}
+		#include "../../nodes/NOD_static_types.h"
+		#undef DefNode
 	}
+
+	RNA_enum_item_end(&item, &totitem);
+	*free = 1;
+	
+	return item;
 }
 
+/* ******** Node Tree ******** */
+
 static StructRNA *rna_NodeTree_refine(struct PointerRNA *ptr)
 {
 	bNodeTree *ntree = (bNodeTree *)ptr->data;
+	
+	if (ntree->typeinfo && ntree->typeinfo->ext.srna)
+		return ntree->typeinfo->ext.srna;
+	else
+		return &RNA_NodeTree;
+}
 
-	switch (ntree->type) {
-		case NTREE_SHADER:
-			return &RNA_ShaderNodeTree;
-		case NTREE_COMPOSIT:
-			return &RNA_CompositorNodeTree;
-		case NTREE_TEXTURE:
-			return &RNA_TextureNodeTree;
-		default:
-			return &RNA_NodeTree;
+static int rna_NodeTree_poll(const bContext *C, bNodeTreeType *ntreetype)
+{
+	extern FunctionRNA rna_NodeTree_poll_func;
+
+	PointerRNA ptr;
+	ParameterList list;
+	FunctionRNA *func;
+	void *ret;
+	int visible;
+
+	RNA_pointer_create(NULL, ntreetype->ext.srna, NULL, &ptr); /* dummy */
+	func = &rna_NodeTree_poll_func; /* RNA_struct_find_function(&ptr, "poll"); */
+
+	RNA_parameter_list_create(&list, &ptr, func);
+	RNA_parameter_set_lookup(&list, "context", &C);
+	ntreetype->ext.call((bContext *)C, &ptr, func, &list);
+
+	RNA_parameter_get_lookup(&list, "visible", &ret);
+	visible = *(int *)ret;
+
+	RNA_parameter_list_free(&list);
+
+	return visible;
+}
+
+static void rna_NodeTree_draw_add_menu(const bContext *C, struct uiLayout *layout, bNodeTree *ntree)
+{
+	extern FunctionRNA rna_NodeTree_draw_add_menu_func;
+
+	PointerRNA ptr;
+	ParameterList list;
+	FunctionRNA *func;
+
+	if (!ntreeIsValid(ntree))
+		return;
+
+	RNA_id_pointer_create(&ntree->id, &ptr);
+	func = &rna_NodeTree_draw_add_menu_func; /* RNA_struct_find_function(&ptr, "draw_add_menu"); */
+
+	RNA_parameter_list_create(&list, &ptr, func);
+	RNA_parameter_set_lookup(&list, "context", &C);
+	RNA_parameter_set_lookup(&list, "layout", &layout);
+	ntree->typeinfo->ext.call((bContext *)C, &ptr, func, &list);
+
+	RNA_parameter_list_free(&list);
+}
+
+static void rna_NodeTree_get_from_context(const bContext *C, bNodeTreeType *ntreetype,
+                                          bNodeTree **r_ntree, ID **r_id, ID **r_from)
+{
+	extern FunctionRNA rna_NodeTree_get_from_context_func;
+
+	PointerRNA ptr;
+	ParameterList list;
+	FunctionRNA *func;
+	void *ret1, *ret2, *ret3;
+
+	RNA_pointer_create(NULL, ntreetype->ext.srna, NULL, &ptr); /* dummy */
+	func = &rna_NodeTree_get_from_context_func; /* RNA_struct_find_function(&ptr, "get_from_context"); */
+
+	RNA_parameter_list_create(&list, &ptr, func);
+	RNA_parameter_set_lookup(&list, "context", &C);
+	ntreetype->ext.call((bContext *)C, &ptr, func, &list);
+	
+	RNA_parameter_get_lookup(&list, "result_1", &ret1);
+	RNA_parameter_get_lookup(&list, "result_2", &ret2);
+	RNA_parameter_get_lookup(&list, "result_3", &ret3);
+	*r_ntree = *(bNodeTree **)ret1;
+	*r_id = *(ID **)ret2;
+	*r_from = *(ID **)ret3;
+
+	RNA_parameter_list_free(&list);
+}
+
+static void rna_NodeTree_unregister(Main *UNUSED(bmain), StructRNA *type)
+{
+	bNodeTreeType *nt = RNA_struct_blender_type_get(type);
+
+	if (!nt)
+		return;
+
+	RNA_struct_free_extension(type, &nt->ext);
+
+	ntreeTypeFreeLink(nt);
+
+	RNA_struct_free(&BLENDER_RNA, type);
+
+	/* update while blender is running */
+	WM_main_add_notifier(NC_NODE | NA_EDITED, NULL);
+}
+
+static StructRNA *rna_NodeTree_register(Main *bmain, ReportList *reports, void *data, const char *identifier,
+                                        StructValidateFunc validate, StructCallbackFunc call, StructFreeFunc free)
+{
+	bNodeTreeType *nt, dummynt;
+	bNodeTree dummyntree;
+	PointerRNA dummyptr;
+	int have_function[3];
+
+	/* setup dummy tree & tree type to store static properties in */
+	memset(&dummynt, 0, sizeof(bNodeTreeType));
+	memset(&dummyntree, 0, sizeof(bNodeTree));
+	dummyntree.typeinfo = &dummynt;
+	RNA_pointer_create(NULL, &RNA_NodeTree, &dummyntree, &dummyptr);
+
+	/* validate the python class */
+	if (validate(&dummyptr, data, have_function) != 0)
+		return NULL;
+
+	if (strlen(identifier) >= sizeof(dummynt.idname)) {
+		BKE_reportf(reports, RPT_ERROR, "Registering node tree class: '%s' is too long, maximum length is %d",
+		            identifier, (int)sizeof(dummynt.idname));
+		return NULL;
+	}
+
+	/* check if we have registered this tree type before, and remove it */
+	nt = ntreeTypeFind(dummynt.idname);
+	if (nt)
+		rna_NodeTree_unregister(bmain, nt->ext.srna);
+	
+	/* create a new node tree type */
+	nt = MEM_callocN(sizeof(bNodeTreeType), "node tree type");
+	memcpy(nt, &dummynt, sizeof(dummynt));
+
+	nt->type = NTREE_CUSTOM;
+
+	nt->ext.srna = RNA_def_struct_ptr(&BLENDER_RNA, nt->idname, &RNA_NodeTree); 
+	nt->ext.data = data;
+	nt->ext.call = call;
+	nt->ext.free = free;
+	RNA_struct_blender_type_set(nt->ext.srna, nt);
+
+	RNA_def_struct_ui_text(nt->ext.srna, nt->ui_name, nt->ui_description);
+	RNA_def_struct_ui_icon(nt->ext.srna, nt->ui_icon);
+
+	nt->poll = (have_function[0]) ? rna_NodeTree_poll : NULL;
+	nt->draw_add_menu = (have_function[1]) ? rna_NodeTree_draw_add_menu : NULL;
+	nt->get_from_context = (have_function[2]) ? rna_NodeTree_get_from_context : NULL;
+
+	ntreeTypeAdd(nt);
+
+	/* update while blender is running */
+	WM_main_add_notifier(NC_NODE | NA_EDITED, NULL);
+	
+	return nt->ext.srna;
+}
+
+static void rna_NodeTree_update(Main *bmain, Scene *scene, PointerRNA *ptr)
+{
+	bNodeTree *ntree = (bNodeTree *)ptr->id.data;
+
+	/* when using border, make it so no old data from outside of
+	 * border is hanging around
+	 * ideally shouldn't be in RNA callback, but how to teach
+	 * compo to only clear frame when border usage is actually
+	 * toggling
+	 */
+	if (ntree->flag & NTREE_VIEWER_BORDER) {
+		Image *ima = BKE_image_verify_viewer(IMA_TYPE_COMPOSITE, "Viewer Node");
+		void *lock;
+		ImBuf *ibuf = BKE_image_acquire_ibuf(ima, NULL, &lock);
+
+		if (ibuf) {
+			if (ibuf->rect)
+				memset(ibuf->rect, 0, 4 * ibuf->x * ibuf->y);
+
+			if (ibuf->rect_float)
+				memset(ibuf->rect_float, 0, 4 * ibuf->x * ibuf->y * sizeof(float));
+
+			ibuf->userflags |= IB_DISPLAY_BUFFER_INVALID;
+		}
+
+		BKE_image_release_ibuf(ima, ibuf, lock);
+	}
+
+	WM_main_add_notifier(NC_NODE | NA_EDITED, NULL);
+	WM_main_add_notifier(NC_SCENE | ND_NODES, &ntree->id);
+
+	ED_node_tag_update_nodetree(bmain, ntree);
+}
+
+static bNode *rna_NodeTree_node_new(bNodeTree *ntree, bContext *C, ReportList *reports, const char *type)
+{
+	bNodeType *ntype;
+	bNode *node;
+	
+	if (!ntreeIsValid(ntree)) {
+		BKE_reportf(reports, RPT_ERROR, "Node tree %s invalid", ntree->id.name + 2);
+		return NULL;
+	}
+	
+	ntype = nodeTypeFind(type);
+	if (!ntype) {
+		BKE_reportf(reports, RPT_ERROR, "Node type %s undefined", type);
+		return NULL;
+	}
+	
+	if (ntype->poll && !ntype->poll(ntype, ntree)) {
+		BKE_reportf(reports, RPT_ERROR, "Cannot add node of type %s to node tree '%s'", type, ntree->id.name + 2);
+		return NULL;
+	}
+	
+	node = nodeAddNode(C, ntree, type);
+	BLI_assert(node && node->typeinfo);
+	
+	/* XXX ugly stuff, should be done with specialized operators (after actual node creation)! */
+	if (ntree->type == NTREE_COMPOSIT) {
+		if (ELEM4(node->type, CMP_NODE_COMPOSITE, CMP_NODE_DEFOCUS, CMP_NODE_OUTPUT_FILE, CMP_NODE_R_LAYERS)) {
+			/* annoying, find the node tree we are in, scene can be NULL */
+			Scene *scene;
+			for (scene = CTX_data_main(C)->scene.first; scene; scene = scene->id.next) {
+				if (scene->nodetree == ntree) {
+					break;
+				}
+			}
+			node->id = (ID *)scene;
+			id_us_plus(node->id);
+		}
+		
+		ntreeCompositForceHidden(ntree, CTX_data_scene(C));
+	}
+	else if (ntree->type == NTREE_TEXTURE) {
+		ntreeTexCheckCyclics(ntree);
+	}
+	
+	ntreeUpdateTree(ntree);
+	nodeUpdate(ntree, node);
+	WM_main_add_notifier(NC_NODE | NA_EDITED, ntree);
+
+	return node;
+}
+
+static void rna_NodeTree_node_remove(bNodeTree *ntree, ReportList *reports, PointerRNA *node_ptr)
+{
+	bNode *node = node_ptr->data;
+	
+	if (!ntreeIsValid(ntree)) {
+		BKE_reportf(reports, RPT_ERROR, "Node tree %s invalid", ntree->id.name + 2);
+		return;
+	}
+	
+	if (BLI_findindex(&ntree->nodes, node) == -1) {
+		BKE_reportf(reports, RPT_ERROR, "Unable to locate node '%s' in node tree", node->name);
+		return;
+	}
+
+	id_us_min(node->id);
+	nodeFreeNode(ntree, node);
+	RNA_POINTER_INVALIDATE(node_ptr);
+
+	ntreeUpdateTree(ntree); /* update group node socket links */
+	WM_main_add_notifier(NC_NODE | NA_EDITED, ntree);
+}
+
+static void rna_NodeTree_node_clear(bNodeTree *ntree, ReportList *reports)
+{
+	bNode *node = ntree->nodes.first;
+
+	if (!ntreeIsValid(ntree)) {
+		BKE_reportf(reports, RPT_ERROR, "Node tree %s invalid", ntree->id.name + 2);
+		return;
+	}
+
+	while (node) {
+		bNode *next_node = node->next;
+
+		if (node->id)
+			id_us_min(node->id);
+
+		nodeFreeNode(ntree, node);
+
+		node = next_node;
+	}
+
+	ntreeUpdateTree(ntree);
+
+	WM_main_add_notifier(NC_NODE | NA_EDITED, ntree);
+}
+
+static PointerRNA rna_NodeTree_active_node_get(PointerRNA *ptr)
+{
+	bNodeTree *ntree = (bNodeTree *)ptr->data;
+	bNode *node = nodeGetActive(ntree);
+	return rna_pointer_inherit_refine(ptr, &RNA_Node, node);
+}
+
+static void rna_NodeTree_active_node_set(PointerRNA *ptr, const PointerRNA value)
+{
+	bNodeTree *ntree = (bNodeTree *)ptr->data;
+	bNode *node = (bNode *)value.data;
+	
+	/* activating node might require valid typeinfo */
+	if (!ntreeIsValid(ntree))
+		return;
+	
+	if (node && BLI_findindex(&ntree->nodes, node) != -1)
+		nodeSetActive(ntree, node);
+	else
+		nodeClearActive(ntree);
+}
+
+static bNodeLink *rna_NodeTree_link_new(bNodeTree *ntree, ReportList *reports,
+                                        bNodeSocket *fromsock, bNodeSocket *tosock,
+                                        int verify_limits)
+{
+	bNodeLink *ret;
+	bNode *fromnode = NULL, *tonode = NULL;
+
+	if (!ntreeIsValid(ntree)) {
+		BKE_reportf(reports, RPT_ERROR, "Node tree %s invalid", ntree->id.name + 2);
+		return NULL;
+	}
+
+	nodeFindNode(ntree, fromsock, &fromnode, NULL);
+	nodeFindNode(ntree, tosock, &tonode, NULL);
+	
+	if (&fromsock->in_out == &tosock->in_out) {
+		BKE_report(reports, RPT_ERROR, "Same input/output direction of sockets");
+		return NULL;
+	}
+
+	if (verify_limits) {
+		/* remove other socket links if limit is exceeded */
+		if (nodeCountSocketLinks(ntree, fromsock) > fromsock->limit)
+			nodeRemSocketLinks(ntree, fromsock);
+		if (nodeCountSocketLinks(ntree, tosock) > tosock->limit)
+			nodeRemSocketLinks(ntree, tosock);
+	}
+
+	ret = nodeAddLink(ntree, fromnode, fromsock, tonode, tosock);
+	
+	if (ret) {
+		if (tonode)
+			nodeUpdate(ntree, tonode);
+
+		ntreeUpdateTree(ntree);
+
+		WM_main_add_notifier(NC_NODE | NA_EDITED, ntree);
+	}
+	return ret;
+}
+
+static void rna_NodeTree_link_remove(bNodeTree *ntree, ReportList *reports, PointerRNA *link_ptr)
+{
+	bNodeLink *link = link_ptr->data;
+
+	if (!ntreeIsValid(ntree)) {
+		BKE_reportf(reports, RPT_ERROR, "Node tree %s invalid", ntree->id.name + 2);
+		return;
+	}
+
+	if (BLI_findindex(&ntree->links, link) == -1) {
+		BKE_report(reports, RPT_ERROR, "Unable to locate link in node tree");
+		return;
+	}
+
+	nodeRemLink(ntree, link);
+	RNA_POINTER_INVALIDATE(link_ptr);
+
+	ntreeUpdateTree(ntree);
+	WM_main_add_notifier(NC_NODE | NA_EDITED, ntree);
+}
+
+static void rna_NodeTree_link_clear(bNodeTree *ntree, ReportList *reports)
+{
+	bNodeLink *link = ntree->links.first;
+
+	if (!ntreeIsValid(ntree)) {
+		BKE_reportf(reports, RPT_ERROR, "Node tree %s invalid", ntree->id.name + 2);
+		return;
+	}
+
+	while (link) {
+		bNodeLink *next_link = link->next;
+
+		nodeRemLink(ntree, link);
+
+		link = next_link;
+	}
+	ntreeUpdateTree(ntree);
+
+	WM_main_add_notifier(NC_NODE | NA_EDITED, ntree);
+}
+
+static int rna_NodeTree_active_input_get(PointerRNA *ptr)
+{
+	bNodeTree *ntree = (bNodeTree *)ptr->data;
+	bNodeSocket *gsock;
+	int index;
+
+	for (gsock = ntree->inputs.first, index = 0; gsock; gsock = gsock->next, ++index)
+		if (gsock->flag & SELECT)
+			return index;
+	return -1;
+}
+
+static void rna_NodeTree_active_input_set(PointerRNA *ptr, int value)
+{
+	bNodeTree *ntree = (bNodeTree *)ptr->data;
+	bNodeSocket *gsock;
+	int index;
+	
+	for (gsock = ntree->inputs.first, index = 0; gsock; gsock = gsock->next, ++index) {
+		if (index == value)
+			gsock->flag |= SELECT;
+		else
+			gsock->flag &= ~SELECT;
+	}
+	for (gsock = ntree->outputs.first; gsock; gsock = gsock->next) {
+		gsock->flag &= ~SELECT;
+	}
+}
+
+static int rna_NodeTree_active_output_get(PointerRNA *ptr)
+{
+	bNodeTree *ntree = (bNodeTree *)ptr->data;
+	bNodeSocket *gsock;
+	int index;
+
+	for (gsock = ntree->outputs.first, index = 0; gsock; gsock = gsock->next, ++index)
+		if (gsock->flag & SELECT)
+			return index;
+	return -1;
+}
+
+static void rna_NodeTree_active_output_set(PointerRNA *ptr, int value)
+{
+	bNodeTree *ntree = (bNodeTree *)ptr->data;
+	bNodeSocket *gsock;
+	int index;
+	
+	for (gsock = ntree->inputs.first; gsock; gsock = gsock->next) {
+		gsock->flag &= ~SELECT;
+	}
+	for (gsock = ntree->outputs.first, index = 0; gsock; gsock = gsock->next, ++index) {
+		if (index == value)
+			gsock->flag |= SELECT;
+		else
+			gsock->flag &= ~SELECT;
+	}
+}
+
+static int rna_NodeTree_inputs_lookupstring(PointerRNA *ptr, const char *key, PointerRNA *r_ptr)
+{
+	bNodeTree *ntree = (bNodeTree *)ptr->data;
+	bNodeSocket *sock = ntreeFindSocketInterface(ntree, SOCK_IN, key);
+	RNA_pointer_create(ptr->id.data, &RNA_NodeSocketInterface, sock, r_ptr);
+	return (sock != NULL);
+}
+
+static int rna_NodeTree_outputs_lookupstring(PointerRNA *ptr, const char *key, PointerRNA *r_ptr)
+{
+	bNodeTree *ntree = (bNodeTree *)ptr->data;
+	bNodeSocket *sock = ntreeFindSocketInterface(ntree, SOCK_OUT, key);
+	RNA_pointer_create(ptr->id.data, &RNA_NodeSocketInterface, sock, r_ptr);
+	return (sock != NULL);
+}
+
+static bNodeSocket *rna_NodeTree_inputs_new(bNodeTree *ntree, ReportList *reports, const char *type, const char *name)
+{
+	bNodeSocket *sock;
+	
+	if (!ntreeIsValid(ntree)) {
+		BKE_reportf(reports, RPT_ERROR, "Node tree %s invalid", ntree->id.name + 2);
+		return NULL;
+	}
+	
+	sock = ntreeAddSocketInterface(ntree, SOCK_IN, type, name);
+	
+	ntreeUpdateTree(ntree);
+	WM_main_add_notifier(NC_NODE | NA_EDITED, ntree);
+	
+	return sock;
+}
+
+static bNodeSocket *rna_NodeTree_outputs_new(bNodeTree *ntree, ReportList *reports, const char *type, const char *name)
+{
+	bNodeSocket *sock;
+	
+	if (!ntreeIsValid(ntree)) {
+		BKE_reportf(reports, RPT_ERROR, "Node tree %s invalid", ntree->id.name + 2);
+		return NULL;
+	}
+	
+	sock = ntreeAddSocketInterface(ntree, SOCK_OUT, type, name);
+	
+	ntreeUpdateTree(ntree);
+	WM_main_add_notifier(NC_NODE | NA_EDITED, ntree);
+	
+	return sock;
+}
+
+static void rna_NodeTree_socket_remove(bNodeTree *ntree, ReportList *reports, bNodeSocket *sock)
+{
+	if (!ntreeIsValid(ntree)) {
+		BKE_reportf(reports, RPT_ERROR, "Node tree %s invalid", ntree->id.name + 2);
+		return;
+	}
+	
+	if (BLI_findindex(&ntree->inputs, sock) == -1 && BLI_findindex(&ntree->outputs, sock) == -1) {
+		BKE_reportf(reports, RPT_ERROR, "Unable to locate socket '%s' in node", sock->identifier);
+	}
+	else {
+		ntreeRemoveSocketInterface(ntree, sock);
+		
+		ntreeUpdateTree(ntree);
+		WM_main_add_notifier(NC_NODE | NA_EDITED, ntree);
+	}
+}
+
+static void rna_NodeTree_inputs_clear(bNodeTree *ntree, ReportList *reports)
+{
+	bNodeSocket *sock, *nextsock;
+	
+	if (!ntreeIsValid(ntree)) {
+		BKE_reportf(reports, RPT_ERROR, "Node tree %s invalid", ntree->id.name + 2);
+		return;
 	}
+	
+	for (sock = ntree->inputs.first; sock; sock = nextsock) {
+		nextsock = sock->next;
+		ntreeRemoveSocketInterface(ntree, sock);
+	}
+
+	ntreeUpdateTree(ntree);
+	WM_main_add_notifier(NC_NODE | NA_EDITED, ntree);
+}
+
+static void rna_NodeTree_outputs_clear(bNodeTree *ntree, ReportList *reports)
+{
+	bNodeSocket *sock, *nextsock;
+	
+	if (!ntreeIsValid(ntree)) {
+		BKE_reportf(reports, RPT_ERROR, "Node tree %s invalid", ntree->id.name + 2);
+		return;
+	}
+	
+	for (sock = ntree->outputs.first; sock; sock = nextsock) {
+		nextsock = sock->next;
+		ntreeRemoveSocketInterface(ntree, sock);
+	}
+
+	ntreeUpdateTree(ntree);
+	WM_main_add_notifier(NC_NODE | NA_EDITED, ntree);
+}
+
+static void rna_NodeTree_interface_update(bNodeTree *ntree, bContext *C)
+{
+	if (!ntreeIsValid(ntree))
+		return;
+	
+	ntree->update |= NTREE_UPDATE_GROUP;
+	ntreeUpdateTree(ntree);
+	
+	ED_node_tag_update_nodetree(CTX_data_main(C), ntree);
+}
+
+static void rna_NodeTree_bl_idname_get(PointerRNA *ptr, char *value)
+{
+	bNodeTree *ntree = ptr->data;
+	if (ntree->typeinfo)
+		strcpy(value, ntree->typeinfo->idname);
+	else
+		strcpy(value, "UNDEFINED");
+}
+static int rna_NodeTree_bl_idname_length(PointerRNA *ptr)
+{
+	bNodeTree *ntree = ptr->data;
+	if (ntree->typeinfo)
+		return strlen(ntree->typeinfo->idname);
+	else
+		return strlen("UNDEFINED");
+}
+
+static void rna_NodeTree_bl_label_get(PointerRNA *ptr, char *value)
+{
+	bNodeTree *ntree = ptr->data;
+	if (ntree->typeinfo)
+		strcpy(value, ntree->typeinfo->ui_name);
+	else
+		strcpy(value, "UNDEFINED");
+}
+static int rna_NodeTree_bl_label_length(PointerRNA *ptr)
+{
+	bNodeTree *ntree = ptr->data;
+	if (ntree->typeinfo)
+		return strlen(ntree->typeinfo->ui_name);
+	else
+		return strlen("UNDEFINED");
+}
+
+static void rna_NodeTree_bl_description_get(PointerRNA *ptr, char *value)
+{
+	bNodeTree *ntree = ptr->data;
+	if (ntree->typeinfo)
+		strcpy(value, ntree->typeinfo->ui_description);
+	else
+		strcpy(value, "UNDEFINED");
+}
+static int rna_NodeTree_bl_description_length(PointerRNA *ptr)
+{
+	bNodeTree *ntree = ptr->data;
+	if (ntree->typeinfo)
+		return strlen(ntree->typeinfo->ui_description);
+	else
+		return strlen("UNDEFINED");
+}
+
+static int rna_NodeTree_bl_icon_get(PointerRNA *ptr)
+{
+	bNodeTree *ntree = ptr->data;
+	if (ntree->typeinfo)
+		return ntree->typeinfo->ui_icon;
+	else
+		return ICON_NONE;
+}
+
+
+/* ******** NodeLink ******** */
+
+static int rna_NodeLink_is_hidden_get(PointerRNA *ptr)
+{
+	bNodeLink *link = ptr->data;
+	return nodeLinkIsHidden(link);
+}
+
+
+/* ******** Node ******** */
+
+static StructRNA *rna_Node_refine(struct PointerRNA *ptr)
+{
+	bNode *node = (bNode *)ptr->data;
+	
+	if (node->typeinfo && node->typeinfo->ext.srna)
+		return node->typeinfo->ext.srna;
+	else
+		return ptr->type;
 }
 
 static char *rna_Node_path(PointerRNA *ptr)
@@ -272,21 +1155,384 @@ static char *rna_Node_path(PointerRNA *ptr)
 	return BLI_sprintfN("nodes[\"%s\"]", node->name);
 }
 
-static const char *rna_Node_get_node_type(StructRNA *type)
+static int rna_Node_poll(bNodeType *ntype, bNodeTree *ntree)
 {
-	bNodeType *nodetype = RNA_struct_blender_type_get(type);
-	if (nodetype) {
-		/* XXX hack: with customnodes branch, nodes will use an identifier string instead of integer ID.
-		 * Then this can be returned directly instead of doing this ugly include thingy ...
-		 */
-		#define DefNode(Category, ID, DefFunc, EnumName, StructName, UIName, UIDesc) \
-		if (ID == nodetype->type) { \
-			return EnumName; \
-		}
-		
-		#include "rna_nodetree_types.h"
+	extern FunctionRNA rna_Node_poll_func;
+
+	PointerRNA ptr;
+	ParameterList list;
+	FunctionRNA *func;
+	void *ret;
+	int visible;
+
+	RNA_pointer_create(NULL, ntype->ext.srna, NULL, &ptr); /* dummy */
+	func = &rna_Node_poll_func; /* RNA_struct_find_function(&ptr, "poll"); */
+
+	RNA_parameter_list_create(&list, &ptr, func);
+	RNA_parameter_set_lookup(&list, "node_tree", &ntree);
+	ntype->ext.call(NULL, &ptr, func, &list);
+
+	RNA_parameter_get_lookup(&list, "visible", &ret);
+	visible = *(int *)ret;
+
+	RNA_parameter_list_free(&list);
+
+	return visible;
+}
+
+static int rna_Node_poll_instance(bNode *node, bNodeTree *ntree)
+{
+	extern FunctionRNA rna_Node_poll_instance_func;
+
+	PointerRNA ptr;
+	ParameterList list;
+	FunctionRNA *func;
+	void *ret;
+	int visible;
+
+	if (!node->typeinfo)
+		return FALSE;
+
+	RNA_pointer_create(NULL, node->typeinfo->ext.srna, node, &ptr); /* dummy */
+	func = &rna_Node_poll_instance_func; /* RNA_struct_find_function(&ptr, "poll_instance"); */
+
+	RNA_parameter_list_create(&list, &ptr, func);
+	RNA_parameter_set_lookup(&list, "node_tree", &ntree);
+	node->typeinfo->ext.call(NULL, &ptr, func, &list);
+
+	RNA_parameter_get_lookup(&list, "visible", &ret);
+	visible = *(int *)ret;
+
+	RNA_parameter_list_free(&list);
+
+	return visible;
+}
+
+static int rna_Node_poll_instance_default(bNode *node, bNodeTree *ntree)
+{
+	if (!node->typeinfo)
+		return FALSE;
+	
+	/* use the basic poll function */
+	return rna_Node_poll(node->typeinfo, ntree);
+}
+
+static void rna_Node_update_reg(bNodeTree *ntree, bNode *node)
+{
+	extern FunctionRNA rna_Node_update_func;
+
+	PointerRNA ptr;
+	ParameterList list;
+	FunctionRNA *func;
+
+	if (!node->typeinfo)
+		return;
+
+	RNA_pointer_create((ID *)ntree, node->typeinfo->ext.srna, node, &ptr);
+	func = &rna_Node_update_func; /* RNA_struct_find_function(&ptr, "update"); */
+
+	RNA_parameter_list_create(&list, &ptr, func);
+	node->typeinfo->ext.call(NULL, &ptr, func, &list);
+
+	RNA_parameter_list_free(&list);
+}
+
+static void rna_Node_init(const bContext *C, PointerRNA *ptr)
+{
+	extern FunctionRNA rna_Node_init_func;
+
+	bNode *node = (bNode *)ptr->data;
+	ParameterList list;
+	FunctionRNA *func;
+
+	if (!node->typeinfo)
+		return;
+
+	func = &rna_Node_init_func; /* RNA_struct_find_function(&ptr, "init"); */
+
+	RNA_parameter_list_create(&list, ptr, func);
+	node->typeinfo->ext.call((bContext *)C, ptr, func, &list);
+
+	RNA_parameter_list_free(&list);
+}
+
+static void rna_Node_copy(PointerRNA *ptr, struct bNode *copynode)
+{
+	extern FunctionRNA rna_Node_copy_func;
+
+	bNode *node = (bNode *)ptr->data;
+	ParameterList list;
+	FunctionRNA *func;
+
+	if (!node->typeinfo)
+		return;
+
+	func = &rna_Node_copy_func; /* RNA_struct_find_function(&ptr, "copy"); */
+
+	RNA_parameter_list_create(&list, ptr, func);
+	RNA_parameter_set_lookup(&list, "node", &copynode);
+	node->typeinfo->ext.call(NULL, ptr, func, &list);
+
+	RNA_parameter_list_free(&list);
+}
+
+static void rna_Node_free(PointerRNA *ptr)
+{
+	extern FunctionRNA rna_Node_free_func;
+
+	bNode *node = (bNode *)ptr->data;
+	ParameterList list;
+	FunctionRNA *func;
+
+	if (!node->typeinfo)
+		return;
+
+	func = &rna_Node_free_func; /* RNA_struct_find_function(&ptr, "free"); */
+
+	RNA_parameter_list_create(&list, ptr, func);
+	node->typeinfo->ext.call(NULL, ptr, func, &list);
+
+	RNA_parameter_list_free(&list);
+}
+
+static void rna_Node_draw_buttons(struct uiLayout *layout, bContext *C, PointerRNA *ptr)
+{
+	extern FunctionRNA rna_Node_draw_buttons_func;
+
+	bNode *node = (bNode *)ptr->data;
+	ParameterList list;
+	FunctionRNA *func;
+
+	if (!node->typeinfo)
+		return;
+
+	func = &rna_Node_draw_buttons_func; /* RNA_struct_find_function(&ptr, "draw_buttons"); */
+
+	RNA_parameter_list_create(&list, ptr, func);
+	RNA_parameter_set_lookup(&list, "context", &C);
+	RNA_parameter_set_lookup(&list, "layout", &layout);
+	node->typeinfo->ext.call(C, ptr, func, &list);
+
+	RNA_parameter_list_free(&list);
+}
+
+static void rna_Node_draw_buttons_ext(struct uiLayout *layout, bContext *C, PointerRNA *ptr)
+{
+	extern FunctionRNA rna_Node_draw_buttons_ext_func;
+
+	bNode *node = (bNode *)ptr->data;
+	ParameterList list;
+	FunctionRNA *func;
+
+	if (!node->typeinfo)
+		return;
+
+	func = &rna_Node_draw_buttons_ext_func; /* RNA_struct_find_function(&ptr, "draw_buttons_ext"); */
+
+	RNA_parameter_list_create(&list, ptr, func);
+	RNA_parameter_set_lookup(&list, "context", &C);
+	RNA_parameter_set_lookup(&list, "layout", &layout);
+	node->typeinfo->ext.call(C, ptr, func, &list);
+
+	RNA_parameter_list_free(&list);
+}
+
+static int rna_Node_is_registered_node_type(StructRNA *type)
+{
+	return (RNA_struct_blender_type_get(type) != NULL);
+}
+
+static void rna_Node_is_registered_node_type_runtime(bContext *UNUSED(C), ReportList *UNUSED(reports), PointerRNA *ptr, ParameterList *parms)
+{
+	int result = (RNA_struct_blender_type_get(ptr->type) != NULL);
+	RNA_parameter_set_lookup(parms, "result", &result);
+}
+
+static void rna_Node_unregister(Main *UNUSED(bmain), StructRNA *type)
+{
+	bNodeType *nt = RNA_struct_blender_type_get(type);
+
+	if (!nt)
+		return;
+
+	RNA_struct_free_extension(type, &nt->ext);
+
+	/* this also frees the allocated nt pointer, no MEM_free call needed! */
+	nodeUnregisterType(nt);
+
+	RNA_struct_free(&BLENDER_RNA, type);
+
+	/* update while blender is running */
+	WM_main_add_notifier(NC_NODE | NA_EDITED, NULL);
+}
+
+/* Generic internal registration function.
+ * Can be used to implement callbacks for registerable RNA node subtypes.
+ */
+static bNodeType *rna_Node_register_base(Main *bmain, ReportList *reports, StructRNA *basetype,
+                                         void *data, const char *identifier,
+                                         StructValidateFunc validate, StructCallbackFunc call, StructFreeFunc free)
+{
+	bNodeType *nt, dummynt;
+	bNode dummynode;
+	PointerRNA dummyptr;
+	FunctionRNA *func;
+	PropertyRNA *parm;
+	int have_function[8];
+
+	/* setup dummy node & node type to store static properties in */
+	memset(&dummynt, 0, sizeof(bNodeType));
+	/* this does some additional initialization of default values */
+	node_type_base_custom(&dummynt, identifier, "", 0, 0);
+
+	memset(&dummynode, 0, sizeof(bNode));
+	dummynode.typeinfo = &dummynt;
+	RNA_pointer_create(NULL, basetype, &dummynode, &dummyptr);
+
+	/* validate the python class */
+	if (validate(&dummyptr, data, have_function) != 0)
+		return NULL;
+
+	if (strlen(identifier) >= sizeof(dummynt.idname)) {
+		BKE_reportf(reports, RPT_ERROR, "Registering node class: '%s' is too long, maximum length is %d",
+		            identifier, (int)sizeof(dummynt.idname));
+		return NULL;
+	}
+
+	/* check if we have registered this node type before, and remove it */
+	nt = nodeTypeFind(dummynt.idname);
+	if (nt)
+		rna_Node_unregister(bmain, nt->ext.srna);
+	
+	/* create a new node type */
+	nt = MEM_callocN(sizeof(bNodeType), "node type");
+	memcpy(nt, &dummynt, sizeof(dummynt));
+	/* make sure the node type struct is freed on unregister */
+	nt->needs_free = 1;
+
+	nt->ext.srna = RNA_def_struct_ptr(&BLENDER_RNA, nt->idname, basetype);
+	nt->ext.data = data;
+	nt->ext.call = call;
+	nt->ext.free = free;
+	RNA_struct_blender_type_set(nt->ext.srna, nt);
+
+	RNA_def_struct_ui_text(nt->ext.srna, nt->ui_name, nt->ui_description);
+	RNA_def_struct_ui_icon(nt->ext.srna, nt->ui_icon);
+
+	func = RNA_def_function_runtime(nt->ext.srna, "is_registered_node_type", rna_Node_is_registered_node_type_runtime);
+	RNA_def_function_ui_description(func, "True if a registered node type");
+	RNA_def_function_flag(func, FUNC_NO_SELF | FUNC_USE_SELF_TYPE);
+	parm = RNA_def_boolean(func, "result", FALSE, "Result", "");
+	RNA_def_function_return(func, parm);
+
+	/* XXX bad level call! needed to initialize the basic draw functions ... */
+	ED_init_custom_node_type(nt);
+
+	nt->poll = (have_function[0]) ? rna_Node_poll : NULL;
+	nt->poll_instance = (have_function[1]) ? rna_Node_poll_instance : rna_Node_poll_instance_default;
+	nt->updatefunc = (have_function[2]) ? rna_Node_update_reg : NULL;
+	nt->initfunc_api = (have_function[3]) ? rna_Node_init : NULL;
+	nt->copyfunc_api = (have_function[4]) ? rna_Node_copy : NULL;
+	nt->freefunc_api = (have_function[5]) ? rna_Node_free : NULL;
+	nt->uifunc = (have_function[6]) ? rna_Node_draw_buttons : NULL;
+	nt->uifuncbut = (have_function[7]) ? rna_Node_draw_buttons_ext : NULL;
+	/* node buttons are only drawn if the options flag is set */
+	if (nt->uifunc || nt->uifuncbut)
+		nt->flag |= NODE_OPTIONS;
+	
+	return nt;
+}
+
+static StructRNA *rna_Node_register(Main *bmain, ReportList *reports,
+                                    void *data, const char *identifier,
+                                    StructValidateFunc validate, StructCallbackFunc call, StructFreeFunc free)
+{
+	bNodeType *nt = rna_Node_register_base(bmain, reports, &RNA_Node, data, identifier, validate, call, free);
+	if (!nt)
+		return NULL;
+	
+	nodeRegisterType(nt);
+	
+	/* update while blender is running */
+	WM_main_add_notifier(NC_NODE | NA_EDITED, NULL);
+	
+	return nt->ext.srna;
+}
+
+static StructRNA *rna_NodeGroup_register(Main *bmain, ReportList *reports,
+                                         void *data, const char *identifier,
+                                         StructValidateFunc validate, StructCallbackFunc call, StructFreeFunc free)
+{
+	bNodeType *nt = rna_Node_register_base(bmain, reports, &RNA_NodeGroup, data, identifier, validate, call, free);
+	if (!nt)
+		return NULL;
+	
+	nodeRegisterType(nt);
+	
+	/* update while blender is running */
+	WM_main_add_notifier(NC_NODE | NA_EDITED, NULL);
+	
+	return nt->ext.srna;
+}
+
+static StructRNA *rna_ShaderNode_register(Main *bmain, ReportList *reports,
+                                          void *data, const char *identifier,
+                                          StructValidateFunc validate, StructCallbackFunc call, StructFreeFunc free)
+{
+	bNodeType *nt = rna_Node_register_base(bmain, reports, &RNA_ShaderNode, data, identifier, validate, call, free);
+	if (!nt)
+		return NULL;
+	
+	nodeRegisterType(nt);
+	
+	/* update while blender is running */
+	WM_main_add_notifier(NC_NODE | NA_EDITED, NULL);
+	
+	return nt->ext.srna;
+}
+
+static StructRNA *rna_CompositorNode_register(Main *bmain, ReportList *reports,
+                                              void *data, const char *identifier,
+                                              StructValidateFunc validate, StructCallbackFunc call, StructFreeFunc free)
+{
+	bNodeType *nt = rna_Node_register_base(bmain, reports, &RNA_CompositorNode, data, identifier, validate, call, free);
+	if (!nt)
+		return NULL;
+	
+	nodeRegisterType(nt);
+	
+	/* update while blender is running */
+	WM_main_add_notifier(NC_NODE | NA_EDITED, NULL);
+	
+	return nt->ext.srna;
+}
+
+static StructRNA *rna_TextureNode_register(Main *bmain, ReportList *reports,
+                                           void *data, const char *identifier,
+                                           StructValidateFunc validate, StructCallbackFunc call, StructFreeFunc free)
+{
+	bNodeType *nt = rna_Node_register_base(bmain, reports, &RNA_TextureNode, data, identifier, validate, call, free);
+	if (!nt)
+		return NULL;
+	
+	nodeRegisterType(nt);
+	
+	/* update while blender is running */
+	WM_main_add_notifier(NC_NODE | NA_EDITED, NULL);
+	
+	return nt->ext.srna;
+}
+
+static IDProperty *rna_Node_idprops(PointerRNA *ptr, bool create)
+{
+	bNode *node = ptr->data;
+	
+	if (create && !node->prop) {
+		IDPropertyTemplate val = {0};
+		node->prop = IDP_New(IDP_GROUP, &val, "RNA_Node ID properties");
 	}
-	return "";
+	
+	return node->prop;
 }
 
 static void rna_Node_parent_set(PointerRNA *ptr, PointerRNA value)
@@ -330,47 +1576,388 @@ static int rna_Node_parent_poll(PointerRNA *ptr, PointerRNA value)
 	return TRUE;
 }
 
-static StructRNA *rna_NodeSocket_refine(PointerRNA *ptr)
+static void rna_Node_update(Main *bmain, Scene *UNUSED(scene), PointerRNA *ptr)
 {
-	bNodeSocket *sock = (bNodeSocket *)ptr->data;
+	bNodeTree *ntree = (bNodeTree *)ptr->id.data;
+	ED_node_tag_update_nodetree(bmain, ntree);
+}
+
+static void rna_Node_socket_value_update(ID *id, bNode *UNUSED(node), bContext *C)
+{
+	ED_node_tag_update_nodetree(CTX_data_main(C), (bNodeTree *)id);
+}
+
+static void rna_Node_select_set(PointerRNA *ptr, int value)
+{
+	bNode *node = (bNode *)ptr->data;
+	nodeSetSelected(node, value);
+}
+
+static void rna_Node_name_set(PointerRNA *ptr, const char *value)
+{
+	bNodeTree *ntree = (bNodeTree *)ptr->id.data;
+	bNode *node = (bNode *)ptr->data;
+	char oldname[sizeof(node->name)];
 	
-	if (sock->default_value) {
-		/* This returns the refined socket type with the full definition
-		 * of the default input value with type and subtype.
-		 */
-		
-		#define SUBTYPE(socktype, stypename, id, idname) \
-		{ \
-			bNodeSocketValue##stypename *value = (bNodeSocketValue##stypename *)sock->default_value; \
-			if (value->subtype == PROP_##id) \
-				return &RNA_NodeSocket##stypename##idname; \
-		}
+	/* make a copy of the old name first */
+	BLI_strncpy(oldname, node->name, sizeof(node->name));
+	/* set new name */
+	BLI_strncpy_utf8(node->name, value, sizeof(node->name));
+	
+	nodeUniqueName(ntree, node);
+	
+	/* fix all the animation data which may link to this */
+	BKE_all_animdata_fix_paths_rename(NULL, "nodes", oldname, node->name);
+}
+
+static int rna_Node_inputs_lookupstring(PointerRNA *ptr, const char *key, PointerRNA *r_ptr)
+{
+	bNode *node = (bNode *)ptr->data;
+	bNodeSocket *sock = nodeFindSocket(node, SOCK_IN, key);
+	RNA_pointer_create(ptr->id.data, &RNA_NodeSocket, sock, r_ptr);
+	return (sock != NULL);
+}
+
+static int rna_Node_outputs_lookupstring(PointerRNA *ptr, const char *key, PointerRNA *r_ptr)
+{
+	bNode *node = (bNode *)ptr->data;
+	bNodeSocket *sock = nodeFindSocket(node, SOCK_OUT, key);
+	RNA_pointer_create(ptr->id.data, &RNA_NodeSocket, sock, r_ptr);
+	return (sock != NULL);
+}
+
+static bNodeSocket *rna_Node_inputs_new(ID *id, bNode *node, ReportList *reports, const char *type, const char *name, const char *identifier)
+{
+	bNodeTree *ntree = (bNodeTree *)id;
+	bNodeSocket *sock;
+	
+	if (!node->typeinfo) {
+		BKE_reportf(reports, RPT_ERROR, "Node type %s of node %s undefined", node->idname, node->name);
+		return NULL;
+	}
+	
+	sock = nodeAddSocket(ntree, node, SOCK_IN, type, identifier, name);
+	
+	if (sock == NULL) {
+		BKE_report(reports, RPT_ERROR, "Unable to create socket");
+	}
+	else {
+		ntreeUpdateTree(ntree);
+		WM_main_add_notifier(NC_NODE | NA_EDITED, ntree);
+	}
+	
+	return sock;
+}
+
+static bNodeSocket *rna_Node_outputs_new(ID *id, bNode *node, ReportList *reports, const char *type, const char *name, const char *identifier)
+{
+	bNodeTree *ntree = (bNodeTree *)id;
+	bNodeSocket *sock;
+	
+	if (!node->typeinfo) {
+		BKE_reportf(reports, RPT_ERROR, "Node type %s of node %s undefined", node->idname, node->name);
+		return NULL;
+	}
+	
+	sock = nodeAddSocket(ntree, node, SOCK_OUT, type, identifier, name);
+	
+	if (sock == NULL) {
+		BKE_reportf(reports, RPT_ERROR, "Unable to create socket");
+	}
+	else {
+		ntreeUpdateTree(ntree);
+		WM_main_add_notifier(NC_NODE | NA_EDITED, ntree);
+	}
+	
+	return sock;
+}
+
+static void rna_Node_socket_remove(ID *id, bNode *node, ReportList *reports, bNodeSocket *sock)
+{
+	bNodeTree *ntree = (bNodeTree *)id;
+	
+	if (!node->typeinfo) {
+		BKE_reportf(reports, RPT_ERROR, "Node type %s of node %s undefined", node->idname, node->name);
+		return;
+	}
+	
+	if (BLI_findindex(&node->inputs, sock) == -1 && BLI_findindex(&node->outputs, sock) == -1) {
+		BKE_reportf(reports, RPT_ERROR, "Unable to locate socket '%s' in node", sock->identifier);
+	}
+	else {
+		nodeRemoveSocket(ntree, node, sock);
 		
-		switch (sock->type) {
-			case SOCK_FLOAT:
-				NODE_DEFINE_SUBTYPES_FLOAT
-				break;
-			case SOCK_INT:
-				NODE_DEFINE_SUBTYPES_INT
-				break;
-			case SOCK_BOOLEAN:
-				return &RNA_NodeSocketBoolean;
-			case SOCK_VECTOR:
-				NODE_DEFINE_SUBTYPES_VECTOR
-				break;
-			case SOCK_STRING:
-				NODE_DEFINE_SUBTYPES_STRING
-				break;
-			case SOCK_RGBA:
-				return &RNA_NodeSocketRGBA;
-			case SOCK_SHADER:
-				return &RNA_NodeSocketShader;
-		}
+		ntreeUpdateTree(ntree);
+		WM_main_add_notifier(NC_NODE | NA_EDITED, ntree);
+	}
+}
+
+static void rna_Node_inputs_clear(ID *id, bNode *node, ReportList *reports)
+{
+	bNodeTree *ntree = (bNodeTree *)id;
+	bNodeSocket *sock, *nextsock;
+	
+	if (!node->typeinfo) {
+		BKE_reportf(reports, RPT_ERROR, "Node type %s of node %s undefined", node->idname, node->name);
+		return;
+	}
+	
+	for (sock = node->inputs.first; sock; sock = nextsock) {
+		nextsock = sock->next;
+		nodeRemoveSocket(ntree, node, sock);
+	}
+
+	ntreeUpdateTree(ntree);
+	WM_main_add_notifier(NC_NODE | NA_EDITED, ntree);
+}
+
+static void rna_Node_outputs_clear(ID *id, bNode *node, ReportList *reports)
+{
+	bNodeTree *ntree = (bNodeTree *)id;
+	bNodeSocket *sock, *nextsock;
+	
+	if (!node->typeinfo) {
+		BKE_reportf(reports, RPT_ERROR, "Node type %s of node %s undefined", node->idname, node->name);
+		return;
+	}
+	
+	for (sock = node->outputs.first; sock; sock = nextsock) {
+		nextsock = sock->next;
+		nodeRemoveSocket(ntree, node, sock);
+	}
+
+	ntreeUpdateTree(ntree);
+	WM_main_add_notifier(NC_NODE | NA_EDITED, ntree);
+}
+
+static void rna_Node_width_range(PointerRNA *ptr, float *min, float *max, float *softmin, float *softmax)
+{
+	bNode *node = ptr->data;
+	if (node->typeinfo) {
+		*min = *softmin = node->typeinfo->minwidth;
+		*max = *softmax = node->typeinfo->maxwidth;
+	}
+	else {
+		*min = *softmin = 0.0f;
+		*max = *softmax = 0.0f;
+	}
+}
+
+static void rna_Node_height_range(PointerRNA *ptr, float *min, float *max, float *softmin, float *softmax)
+{
+	bNode *node = ptr->data;
+	if (node->typeinfo) {
+		*min = *softmin = node->typeinfo->minheight;
+		*max = *softmax = node->typeinfo->maxheight;
+	}
+	else {
+		*min = *softmin = 0.0f;
+		*max = *softmax = 0.0f;
+	}
+}
+
+static void rna_Node_bl_idname_get(PointerRNA *ptr, char *value)
+{
+	bNode *node = ptr->data;
+	if (node->typeinfo)
+		strcpy(value, node->typeinfo->idname);
+	else
+		strcpy(value, "UNDEFINED");
+}
+static int rna_Node_bl_idname_length(PointerRNA *ptr)
+{
+	bNode *node = ptr->data;
+	if (node->typeinfo)
+		return strlen(node->typeinfo->idname);
+	else
+		return strlen("UNDEFINED");
+}
+
+static void rna_Node_bl_label_get(PointerRNA *ptr, char *value)
+{
+	bNode *node = ptr->data;
+	if (node->typeinfo)
+		strcpy(value, node->typeinfo->ui_name);
+	else
+		strcpy(value, "UNDEFINED");
+}
+static int rna_Node_bl_label_length(PointerRNA *ptr)
+{
+	bNode *node = ptr->data;
+	if (node->typeinfo)
+		return strlen(node->typeinfo->ui_name);
+	else
+		return strlen("UNDEFINED");
+}
+
+static void rna_Node_bl_description_get(PointerRNA *ptr, char *value)
+{
+	bNode *node = ptr->data;
+	if (node->typeinfo)
+		strcpy(value, node->typeinfo->ui_description);
+	else
+		strcpy(value, "");
+}
+static int rna_Node_bl_description_length(PointerRNA *ptr)
+{
+	bNode *node = ptr->data;
+	if (node->typeinfo)
+		return strlen(node->typeinfo->ui_description);
+	else
+		return strlen("");
+}
+
+static int rna_Node_bl_icon_get(PointerRNA *ptr)
+{
+	bNode *node = ptr->data;
+	if (node->typeinfo)
+		return node->typeinfo->ui_icon;
+	else
+		return ICON_NONE;
+}
+
+static int rna_Node_bl_static_type_get(PointerRNA *ptr)
+{
+	bNode *node = ptr->data;
+	if (node->typeinfo)
+		return node->typeinfo->type;
+	else
+		return NODE_UNDEFINED;
+}
+
+
+/* ******** Node Socket ******** */
+
+static void rna_NodeSocket_draw(bContext *C, struct uiLayout *layout, PointerRNA *ptr, PointerRNA *node_ptr)
+{
+	extern FunctionRNA rna_NodeSocket_draw_func;
+
+	bNodeSocket *sock = (bNodeSocket *)ptr->data;
+	ParameterList list;
+	FunctionRNA *func;
+
+	if (!sock->typeinfo)
+		return;
+
+	func = &rna_NodeSocket_draw_func; /* RNA_struct_find_function(&ptr, "draw"); */
+
+	RNA_parameter_list_create(&list, ptr, func);
+	RNA_parameter_set_lookup(&list, "context", &C);
+	RNA_parameter_set_lookup(&list, "layout", &layout);
+	RNA_parameter_set_lookup(&list, "node", node_ptr);
+	sock->typeinfo->ext_socket.call(C, ptr, func, &list);
+
+	RNA_parameter_list_free(&list);
+}
+
+static void rna_NodeSocket_draw_color(bContext *C, PointerRNA *ptr, PointerRNA *node_ptr, float *r_color)
+{
+	extern FunctionRNA rna_NodeSocket_draw_color_func;
+
+	bNodeSocket *sock = (bNodeSocket *)ptr->data;
+	ParameterList list;
+	FunctionRNA *func;
+	void *ret;
+
+	if (!sock->typeinfo)
+		return;
+
+	func = &rna_NodeSocket_draw_color_func; /* RNA_struct_find_function(&ptr, "draw_color"); */
+
+	RNA_parameter_list_create(&list, ptr, func);
+	RNA_parameter_set_lookup(&list, "context", &C);
+	RNA_parameter_set_lookup(&list, "node", node_ptr);
+	sock->typeinfo->ext_socket.call(C, ptr, func, &list);
+
+	RNA_parameter_get_lookup(&list, "color", &ret);
+	copy_v4_v4(r_color, (float *)ret);
+
+	RNA_parameter_list_free(&list);
+}
+
+static void rna_NodeSocket_unregister(Main *UNUSED(bmain), StructRNA *type)
+{
+	bNodeSocketType *st = RNA_struct_blender_type_get(type);
+	if (!st)
+		return;
+	
+	RNA_struct_free_extension(type, &st->ext_socket);
+
+	nodeUnregisterSocketType(st);
+
+	RNA_struct_free(&BLENDER_RNA, type);
+
+	/* update while blender is running */
+	WM_main_add_notifier(NC_NODE | NA_EDITED, NULL);
+}
+
+static StructRNA *rna_NodeSocket_register(Main *bmain, ReportList *reports, void *data, const char *identifier,
+                                          StructValidateFunc validate, StructCallbackFunc call, StructFreeFunc free)
+{
+	bNodeSocketType *st, dummyst;
+	bNodeSocket dummysock;
+	PointerRNA dummyptr;
+	int have_function[2];
+
+	/* setup dummy socket & socket type to store static properties in */
+	memset(&dummyst, 0, sizeof(bNodeSocketType));
+	
+	memset(&dummysock, 0, sizeof(bNodeSocket));
+	dummysock.typeinfo = &dummyst;
+	RNA_pointer_create(NULL, &RNA_NodeSocket, &dummysock, &dummyptr);
+
+	/* validate the python class */
+	if (validate(&dummyptr, data, have_function) != 0)
+		return NULL;
+	
+	if (strlen(identifier) >= sizeof(dummyst.idname)) {
+		BKE_reportf(reports, RPT_ERROR, "Registering node socket class: '%s' is too long, maximum length is %d",
+		            identifier, (int)sizeof(dummyst.idname));
+		return NULL;
+	}
+
+	/* check if we have registered this socket type before */
+	st = nodeSocketTypeFind(dummyst.idname);
+	if (!st) {
+		/* create a new node socket type */
+		st = MEM_callocN(sizeof(bNodeSocketType), "node socket type");
+		memcpy(st, &dummyst, sizeof(dummyst));
 		
-		#undef SUBTYPE
+		nodeRegisterSocketType(st);
 	}
 	
-	return &RNA_NodeSocket;
+	/* if RNA type is already registered, unregister first */
+	if (st->ext_socket.srna) {
+		StructRNA *srna = st->ext_socket.srna;
+		RNA_struct_free_extension(srna, &st->ext_socket);
+		RNA_struct_free(&BLENDER_RNA, srna);
+	}
+	st->ext_socket.srna = RNA_def_struct_ptr(&BLENDER_RNA, st->idname, &RNA_NodeSocket); 
+	st->ext_socket.data = data;
+	st->ext_socket.call = call;
+	st->ext_socket.free = free;
+	RNA_struct_blender_type_set(st->ext_socket.srna, st);
+	
+	/* XXX bad level call! needed to initialize the basic draw functions ... */
+	ED_init_custom_node_socket_type(st);
+
+	st->draw = (have_function[0]) ? rna_NodeSocket_draw : NULL;
+	st->draw_color = (have_function[1]) ? rna_NodeSocket_draw_color : NULL;
+
+	/* update while blender is running */
+	WM_main_add_notifier(NC_NODE | NA_EDITED, NULL);
+	
+	return st->ext_socket.srna;
+}
+
+static StructRNA *rna_NodeSocket_refine(PointerRNA *ptr)
+{
+	bNodeSocket *sock = (bNodeSocket *)ptr->data;
+	
+	if (sock->typeinfo && sock->typeinfo->ext_socket.srna)
+		return sock->typeinfo->ext_socket.srna;
+	else
+		return &RNA_NodeSocket;
 }
 
 static char *rna_NodeSocket_path(PointerRNA *ptr)
@@ -380,29 +1967,65 @@ static char *rna_NodeSocket_path(PointerRNA *ptr)
 	bNode *node;
 	int socketindex;
 	
-	/* group sockets */
-	socketindex = BLI_findindex(&ntree->inputs, sock);
-	if (socketindex != -1)
-		return BLI_sprintfN("inputs[%d]", socketindex);
-	
-	socketindex = BLI_findindex(&ntree->outputs, sock);
-	if (socketindex != -1)
-		return BLI_sprintfN("outputs[%d]", socketindex);
-	
-	/* node sockets */
-	if (!nodeFindNode(ntree, sock, &node, NULL, NULL)) return NULL;
+	if (!nodeFindNode(ntree, sock, &node, &socketindex))
+		return NULL;
 	
-	socketindex = BLI_findindex(&node->inputs, sock);
-	if (socketindex != -1)
+	if (sock->in_out == SOCK_IN)
 		return BLI_sprintfN("nodes[\"%s\"].inputs[%d]", node->name, socketindex);
-	
-	socketindex = BLI_findindex(&node->outputs, sock);
-	if (socketindex != -1)
+	else
 		return BLI_sprintfN("nodes[\"%s\"].outputs[%d]", node->name, socketindex);
 	
 	return NULL;
 }
 
+static IDProperty *rna_NodeSocket_idprops(PointerRNA *ptr, bool create)
+{
+	bNodeSocket *sock = ptr->data;
+	
+	if (create && !sock->prop) {
+		IDPropertyTemplate val = {0};
+		sock->prop = IDP_New(IDP_GROUP, &val, "RNA_NodeSocket ID properties");
+	}
+	
+	return sock->prop;
+}
+
+static void rna_NodeSocket_bl_idname_get(PointerRNA *ptr, char *value)
+{
+	bNodeSocket *sock = ptr->data;
+	if (sock->typeinfo)
+		strcpy(value, sock->typeinfo->idname);
+	else
+		strcpy(value, "UNDEFINED");
+}
+static int rna_NodeSocket_bl_idname_length(PointerRNA *ptr)
+{
+	bNodeSocket *sock = ptr->data;
+	if (sock->typeinfo)
+		return strlen(sock->typeinfo->idname);
+	else
+		return strlen("UNDEFINED");
+}
+
+static PointerRNA rna_NodeSocket_node_get(PointerRNA *ptr)
+{
+	bNodeTree *ntree = (bNodeTree *)ptr->id.data;
+	bNodeSocket *sock = (bNodeSocket *)ptr->data;
+	bNode *node;
+	PointerRNA r_ptr;
+	
+	nodeFindNode(ntree, sock, &node, NULL);
+	
+	RNA_pointer_create((ID *)ntree, &RNA_Node, node, &r_ptr);
+	return r_ptr;
+}
+
+static void rna_NodeSocket_update(Main *bmain, Scene *UNUSED(scene), PointerRNA *ptr)
+{
+	bNodeTree *ntree = (bNodeTree *)ptr->id.data;
+	ED_node_tag_update_nodetree(bmain, ntree);
+}
+
 static void rna_NodeSocket_hide_set(PointerRNA *ptr, int value)
 {
 	bNodeSocket *sock = (bNodeSocket *)ptr->data;
@@ -417,151 +2040,369 @@ static void rna_NodeSocket_hide_set(PointerRNA *ptr, int value)
 		sock->flag &= ~SOCK_HIDDEN;
 }
 
-/* Button Set Funcs for Matte Nodes */
-static void rna_Matte_t1_set(PointerRNA *ptr, float value)
+
+static void rna_NodeSocketInterface_draw(bContext *C, struct uiLayout *layout, PointerRNA *ptr)
 {
-	bNode *node = (bNode *)ptr->data;
-	NodeChroma *chroma = node->storage;
-	
-	chroma->t1 = value;
-	
-	if (value < chroma->t2)
-		chroma->t2 = value;
+	extern FunctionRNA rna_NodeSocketInterface_draw_func;
+
+	bNodeSocket *stemp = (bNodeSocket *)ptr->data;
+	ParameterList list;
+	FunctionRNA *func;
+
+	if (!stemp->typeinfo)
+		return;
+
+	func = &rna_NodeSocketInterface_draw_func; /* RNA_struct_find_function(&ptr, "draw"); */
+
+	RNA_parameter_list_create(&list, ptr, func);
+	RNA_parameter_set_lookup(&list, "context", &C);
+	RNA_parameter_set_lookup(&list, "layout", &layout);
+	stemp->typeinfo->ext_interface.call(C, ptr, func, &list);
+
+	RNA_parameter_list_free(&list);
 }
 
-static void rna_Matte_t2_set(PointerRNA *ptr, float value)
+static void rna_NodeSocketInterface_draw_color(bContext *C, PointerRNA *ptr, float *r_color)
 {
-	bNode *node = (bNode *)ptr->data;
-	NodeChroma *chroma = node->storage;
-	
-	if (value > chroma->t1)
-		value = chroma->t1;
-	
-	chroma->t2 = value;
+	extern FunctionRNA rna_NodeSocketInterface_draw_color_func;
+
+	bNodeSocket *sock = (bNodeSocket *)ptr->data;
+	ParameterList list;
+	FunctionRNA *func;
+	void *ret;
+
+	if (!sock->typeinfo)
+		return;
+
+	func = &rna_NodeSocketInterface_draw_color_func; /* RNA_struct_find_function(&ptr, "draw_color"); */
+
+	RNA_parameter_list_create(&list, ptr, func);
+	RNA_parameter_set_lookup(&list, "context", &C);
+	sock->typeinfo->ext_interface.call(C, ptr, func, &list);
+
+	RNA_parameter_get_lookup(&list, "color", &ret);
+	copy_v4_v4(r_color, (float *)ret);
+
+	RNA_parameter_list_free(&list);
 }
 
-static void rna_distance_matte_t1_set(PointerRNA *ptr, float value)
+static void rna_NodeSocketInterface_register_properties(bNodeTree *ntree, bNodeSocket *stemp, StructRNA *data_srna)
 {
-	bNode *node = (bNode *)ptr->data;
-	NodeChroma *chroma = node->storage;
+	extern FunctionRNA rna_NodeSocketInterface_register_properties_func;
 
-	chroma->t1 = value;
+	PointerRNA ptr;
+	ParameterList list;
+	FunctionRNA *func;
+
+	if (!stemp->typeinfo)
+		return;
+
+	RNA_pointer_create((ID *)ntree, &RNA_NodeSocketInterface, stemp, &ptr);
+	func = &rna_NodeSocketInterface_register_properties_func; /* RNA_struct_find_function(&ptr, "register_properties"); */
+
+	RNA_parameter_list_create(&list, &ptr, func);
+	RNA_parameter_set_lookup(&list, "data_rna_type", &data_srna);
+	stemp->typeinfo->ext_interface.call(NULL, &ptr, func, &list);
+
+	RNA_parameter_list_free(&list);
 }
 
-static void rna_distance_matte_t2_set(PointerRNA *ptr, float value)
+static void rna_NodeSocketInterface_init_socket(bNodeTree *ntree, bNodeSocket *stemp, bNode *node, bNodeSocket *sock, const char *data_path)
 {
-	bNode *node = (bNode *)ptr->data;
-	NodeChroma *chroma = node->storage;
+	extern FunctionRNA rna_NodeSocketInterface_init_socket_func;
 
-	chroma->t2 = value;
+	PointerRNA ptr, node_ptr, sock_ptr;
+	ParameterList list;
+	FunctionRNA *func;
+
+	if (!stemp->typeinfo)
+		return;
+
+	RNA_pointer_create((ID *)ntree, &RNA_NodeSocketInterface, stemp, &ptr);
+	RNA_pointer_create((ID *)ntree, &RNA_Node, node, &node_ptr);
+	RNA_pointer_create((ID *)ntree, &RNA_NodeSocket, sock, &sock_ptr);
+	func = &rna_NodeSocketInterface_init_socket_func; /* RNA_struct_find_function(&ptr, "init_socket"); */
+
+	RNA_parameter_list_create(&list, &ptr, func);
+	RNA_parameter_set_lookup(&list, "node", &node_ptr);
+	RNA_parameter_set_lookup(&list, "socket", &sock_ptr);
+	RNA_parameter_set_lookup(&list, "data_path", &data_path);
+	stemp->typeinfo->ext_interface.call(NULL, &ptr, func, &list);
+
+	RNA_parameter_list_free(&list);
 }
 
-static void rna_difference_matte_t1_set(PointerRNA *ptr, float value)
+static void rna_NodeSocketInterface_from_socket(bNodeTree *ntree, bNodeSocket *stemp, bNode *node, bNodeSocket *sock)
 {
-	bNode *node = (bNode *)ptr->data;
-	NodeChroma *chroma = node->storage;
+	extern FunctionRNA rna_NodeSocketInterface_from_socket_func;
 
-	chroma->t1 = value;
+	PointerRNA ptr, node_ptr, sock_ptr;
+	ParameterList list;
+	FunctionRNA *func;
+
+	if (!stemp->typeinfo)
+		return;
+
+	RNA_pointer_create((ID *)ntree, &RNA_NodeSocketInterface, stemp, &ptr);
+	RNA_pointer_create((ID *)ntree, &RNA_Node, node, &node_ptr);
+	RNA_pointer_create((ID *)ntree, &RNA_NodeSocket, sock, &sock_ptr);
+	func = &rna_NodeSocketInterface_from_socket_func; /* RNA_struct_find_function(&ptr, "from_socket"); */
+
+	RNA_parameter_list_create(&list, &ptr, func);
+	RNA_parameter_set_lookup(&list, "node", &node_ptr);
+	RNA_parameter_set_lookup(&list, "socket", &sock_ptr);
+	stemp->typeinfo->ext_interface.call(NULL, &ptr, func, &list);
+
+	RNA_parameter_list_free(&list);
 }
 
-static void rna_difference_matte_t2_set(PointerRNA *ptr, float value)
+static void rna_NodeSocketInterface_unregister(Main *UNUSED(bmain), StructRNA *type)
 {
-	bNode *node = (bNode *)ptr->data;
-	NodeChroma *chroma = node->storage;
+	bNodeSocketType *st = RNA_struct_blender_type_get(type);
+	if (!st)
+		return;
+	
+	RNA_struct_free_extension(type, &st->ext_interface);
+	
+	RNA_struct_free(&BLENDER_RNA, type);
+	
+	/* update while blender is running */
+	WM_main_add_notifier(NC_NODE | NA_EDITED, NULL);
+}
 
-	chroma->t2 = value;
+static StructRNA *rna_NodeSocketInterface_register(Main *bmain, ReportList *reports, void *data, const char *identifier,
+                                                  StructValidateFunc validate, StructCallbackFunc call, StructFreeFunc free)
+{
+	bNodeSocketType *st, dummyst;
+	bNodeSocket dummysock;
+	PointerRNA dummyptr;
+	int have_function[5];
+
+	/* setup dummy socket & socket type to store static properties in */
+	memset(&dummyst, 0, sizeof(bNodeSocketType));
+	
+	memset(&dummysock, 0, sizeof(bNodeSocket));
+	dummysock.typeinfo = &dummyst;
+	RNA_pointer_create(NULL, &RNA_NodeSocketInterface, &dummysock, &dummyptr);
+
+	/* validate the python class */
+	if (validate(&dummyptr, data, have_function) != 0)
+		return NULL;
+
+	/* check if we have registered this socket type before */
+	st = nodeSocketTypeFind(dummyst.idname);
+	if (st) {
+		/* basic socket type registered by a socket class before. */
+	}
+	else {
+		/* create a new node socket type */
+		st = MEM_callocN(sizeof(bNodeSocketType), "node socket type");
+		memcpy(st, &dummyst, sizeof(dummyst));
+		
+		nodeRegisterSocketType(st);
+	}
+	
+	/* if RNA type is already registered, unregister first */
+	if (st->ext_interface.srna) {
+		StructRNA *srna = st->ext_interface.srna;
+		RNA_struct_free_extension(srna, &st->ext_interface);
+		RNA_struct_free(&BLENDER_RNA, srna);
+	}
+	st->ext_interface.srna = RNA_def_struct_ptr(&BLENDER_RNA, identifier, &RNA_NodeSocketInterface); 
+	st->ext_interface.data = data;
+	st->ext_interface.call = call;
+	st->ext_interface.free = free;
+	RNA_struct_blender_type_set(st->ext_interface.srna, st);
+	
+	st->interface_draw = (have_function[0]) ? rna_NodeSocketInterface_draw : NULL;
+	st->interface_draw_color = (have_function[1]) ? rna_NodeSocketInterface_draw_color : NULL;
+	st->interface_register_properties = (have_function[2]) ? rna_NodeSocketInterface_register_properties : NULL;
+	st->interface_init_socket = (have_function[3]) ? rna_NodeSocketInterface_init_socket : NULL;
+	st->interface_from_socket = (have_function[4]) ? rna_NodeSocketInterface_from_socket : NULL;
+	
+	/* update while blender is running */
+	WM_main_add_notifier(NC_NODE | NA_EDITED, NULL);
+	
+	return st->ext_interface.srna;
 }
 
+static StructRNA *rna_NodeSocketInterface_refine(PointerRNA *ptr)
+{
+	bNodeSocket *sock = (bNodeSocket *)ptr->data;
+	
+	if (sock->typeinfo && sock->typeinfo->ext_interface.srna)
+		return sock->typeinfo->ext_interface.srna;
+	else
+		return &RNA_NodeSocketInterface;
+}
 
-static void rna_Node_scene_set(PointerRNA *ptr, PointerRNA value)
+static char *rna_NodeSocketInterface_path(PointerRNA *ptr)
 {
-	bNode *node = (bNode *)ptr->data;
+	bNodeTree *ntree = (bNodeTree *)ptr->id.data;
+	bNodeSocket *sock = (bNodeSocket *)ptr->data;
+	int socketindex;
+	
+	socketindex = BLI_findindex(&ntree->inputs, sock);
+	if (socketindex != -1)
+		return BLI_sprintfN("inputs[%d]", socketindex);
+	
+	socketindex = BLI_findindex(&ntree->outputs, sock);
+	if (socketindex != -1)
+		return BLI_sprintfN("outputs[%d]", socketindex);
+	
+	return NULL;
+}
 
-	if (node->id) {
-		id_us_min(node->id);
-		node->id = NULL;
+static IDProperty *rna_NodeSocketInterface_idprops(PointerRNA *ptr, bool create)
+{
+	bNodeSocket *sock = ptr->data;
+	
+	if (create && !sock->prop) {
+		IDPropertyTemplate val = {0};
+		sock->prop = IDP_New(IDP_GROUP, &val, "RNA_NodeSocketInterface ID properties");
 	}
+	
+	return sock->prop;
+}
 
-	node->id = value.data;
-
-	id_us_plus(node->id);
+static void rna_NodeSocketInterface_update(Main *bmain, Scene *UNUSED(scene), PointerRNA *ptr)
+{
+	bNodeTree *ntree = ptr->id.data;
+	bNodeSocket *stemp = ptr->data;
+	
+	if (!stemp->typeinfo)
+		return;
+	
+	ntree->update |= NTREE_UPDATE_GROUP;
+	ntreeUpdateTree(ntree);
+	
+	ED_node_tag_update_nodetree(bmain, ntree);
 }
 
 
+/* ******** Standard Node Socket Base Types ******** */
 
-static void node_update(Main *bmain, Scene *UNUSED(scene), bNodeTree *ntree, bNode *node)
+static void rna_NodeSocketStandard_draw(ID *id, bNodeSocket *sock, struct bContext *C, struct uiLayout *layout, PointerRNA *nodeptr)
 {
-	ED_node_generic_update(bmain, ntree, node);
+	PointerRNA ptr;
+	RNA_pointer_create(id, &RNA_NodeSocket, sock, &ptr);
+	sock->typeinfo->draw(C, layout, &ptr, nodeptr);
 }
 
-static void rna_Node_update(Main *bmain, Scene *scene, PointerRNA *ptr)
+static void rna_NodeSocketStandard_draw_color(ID *id, bNodeSocket *sock, struct bContext *C, PointerRNA *nodeptr, float *r_color)
 {
-	bNodeTree *ntree = (bNodeTree *)ptr->id.data;
-	bNode *node = (bNode *)ptr->data;
-
-	node_update(bmain, scene, ntree, node);
+	PointerRNA ptr;
+	RNA_pointer_create(id, &RNA_NodeSocket, sock, &ptr);
+	sock->typeinfo->draw_color(C, &ptr, nodeptr, r_color);
 }
 
-static void rna_Node_tex_image_update(Main *bmain, Scene *scene, PointerRNA *ptr)
+static void rna_NodeSocketInterfaceStandard_draw(ID *id, bNodeSocket *sock, struct bContext *C, struct uiLayout *layout)
 {
-	bNodeTree *ntree = (bNodeTree *)ptr->id.data;
-	bNode *node = (bNode *)ptr->data;
+	PointerRNA ptr;
+	RNA_pointer_create(id, &RNA_NodeSocket, sock, &ptr);
+	sock->typeinfo->interface_draw(C, layout, &ptr);
+}
 
-	node_update(bmain, scene, ntree, node);
-	WM_main_add_notifier(NC_IMAGE, NULL);
+static void rna_NodeSocketInterfaceStandard_draw_color(ID *id, bNodeSocket *sock, struct bContext *C, float *r_color)
+{
+	PointerRNA ptr;
+	RNA_pointer_create(id, &RNA_NodeSocket, sock, &ptr);
+	sock->typeinfo->interface_draw_color(C, &ptr, r_color);
 }
 
-static void rna_Node_material_update(Main *bmain, Scene *scene, PointerRNA *ptr)
+static void rna_NodeSocketStandard_float_range(PointerRNA *ptr, float *min, float *max, float *softmin, float *softmax)
 {
-	bNodeTree *ntree = (bNodeTree *)ptr->id.data;
-	bNode *node = (bNode *)ptr->data;
+	bNodeSocket *sock = ptr->data;
+	bNodeSocketValueFloat *dval = sock->default_value;
+	int subtype = sock->typeinfo->subtype;
+	
+	*min = (subtype == PROP_UNSIGNED ? 0.0f : -FLT_MAX);
+	*max = FLT_MAX;
+	*softmin = dval->min;
+	*softmax = dval->max;
+}
 
-	if (node->id)
-		nodeSetActive(ntree, node);
+static void rna_NodeSocketStandard_int_range(PointerRNA *ptr, int *min, int *max, int *softmin, int *softmax)
+{
+	bNodeSocket *sock = ptr->data;
+	bNodeSocketValueFloat *dval = sock->default_value;
+	int subtype = sock->typeinfo->subtype;
+	
+	*min = (subtype == PROP_UNSIGNED ? 0 : INT_MIN);
+	*max = INT_MAX;
+	*softmin = dval->min;
+	*softmax = dval->max;
+}
 
-	node_update(bmain, scene, ntree, node);
+static void rna_NodeSocketStandard_vector_range(PointerRNA *ptr, float *min, float *max, float *softmin, float *softmax)
+{
+	bNodeSocket *sock = ptr->data;
+	bNodeSocketValueVector *dval = sock->default_value;
+	
+	*min = -FLT_MAX;
+	*max = FLT_MAX;
+	*softmin = dval->min;
+	*softmax = dval->max;
 }
 
-static void rna_NodeTree_update(Main *bmain, Scene *scene, PointerRNA *ptr)
+/* using a context update function here, to avoid searching the node if possible */
+static void rna_NodeSocketStandard_value_update(struct bContext *C, PointerRNA *ptr)
 {
-	bNodeTree *ntree = (bNodeTree *)ptr->id.data;
+	bNode *node;
+	
+	/* default update */
+	rna_NodeSocket_update(CTX_data_main(C), CTX_data_scene(C), ptr);
+	
+	/* try to use node from context, faster */
+	node = CTX_data_pointer_get(C, "node").data;
+	if (!node) {
+		bNodeTree *ntree = ptr->id.data;
+		bNodeSocket *sock = ptr->data;
+		
+		/* fall back to searching node in the tree */
+		nodeFindNode(ntree, sock, &node, NULL);
+	}
+	
+	if (node)
+		nodeSynchronizeID(node, true);
+}
 
-	/* when using border, make it so no old data from outside of
-	 * border is hanging around
-	 * ideally shouldn't be in RNA callback, but how to teach
-	 * compo to only clear frame when border usage is actually
-	 * toggling
-	 */
-	if (ntree->flag & NTREE_VIEWER_BORDER) {
-		Image *ima = BKE_image_verify_viewer(IMA_TYPE_COMPOSITE, "Viewer Node");
-		void *lock;
-		ImBuf *ibuf = BKE_image_acquire_ibuf(ima, NULL, &lock);
 
-		if (ibuf) {
-			if (ibuf->rect)
-				memset(ibuf->rect, 0, 4 * ibuf->x * ibuf->y);
+/* ******** Node Types ******** */
 
-			if (ibuf->rect_float)
-				memset(ibuf->rect_float, 0, 4 * ibuf->x * ibuf->y * sizeof(float));
+static void rna_CompositorNode_tag_need_exec(bNode *node)
+{
+	node->need_exec = TRUE;
+}
 
-			ibuf->userflags |= IB_DISPLAY_BUFFER_INVALID;
-		}
+static void rna_Node_tex_image_update(Main *bmain, Scene *UNUSED(scene), PointerRNA *ptr)
+{
+	bNodeTree *ntree = (bNodeTree *)ptr->id.data;
 
-		BKE_image_release_ibuf(ima, ibuf, lock);
-	}
+	ED_node_tag_update_nodetree(bmain, ntree);
+	WM_main_add_notifier(NC_IMAGE, NULL);
+}
 
-	WM_main_add_notifier(NC_NODE | NA_EDITED, NULL);
-	WM_main_add_notifier(NC_SCENE | ND_NODES, &ntree->id);
+static void rna_Node_material_update(Main *bmain, Scene *UNUSED(scene), PointerRNA *ptr)
+{
+	bNodeTree *ntree = (bNodeTree *)ptr->id.data;
+	bNode *node = (bNode *)ptr->data;
+
+	if (node->id)
+		nodeSetActive(ntree, node);
+
+	ED_node_tag_update_nodetree(bmain, ntree);
 }
 
-static void rna_NodeGroup_update(Main *bmain, Scene *scene, PointerRNA *ptr)
+static void rna_NodeGroup_update(Main *bmain, Scene *UNUSED(scene), PointerRNA *ptr)
 {
 	bNodeTree *ntree = (bNodeTree *)ptr->id.data;
 	bNode *node = (bNode *)ptr->data;
 	
-	ntreeUpdateTree((bNodeTree *)node->id);
+	if (node->id)
+		ntreeUpdateTree((bNodeTree *)node->id);
 	
-	node_update(bmain, scene, ntree, node);
+	ED_node_tag_update_nodetree(bmain, ntree);
 }
 
 static int rna_NodeGroup_node_tree_poll(PointerRNA *ptr, const PointerRNA value)
@@ -573,91 +2414,99 @@ static int rna_NodeGroup_node_tree_poll(PointerRNA *ptr, const PointerRNA value)
 	return (ngroup->type == ntree->type);
 }
 
-static void rna_Node_name_set(PointerRNA *ptr, const char *value)
+
+static StructRNA *rna_NodeGroup_interface_typef(PointerRNA *ptr)
 {
-	bNodeTree *ntree = (bNodeTree *)ptr->id.data;
-	bNode *node = (bNode *)ptr->data;
-	char oldname[sizeof(node->name)];
-	
-	/* make a copy of the old name first */
-	BLI_strncpy(oldname, node->name, sizeof(node->name));
-	/* set new name */
-	BLI_strncpy_utf8(node->name, value, sizeof(node->name));
-	
-	nodeUniqueName(ntree, node);
-	
-	/* fix all the animation data which may link to this */
-	BKE_all_animdata_fix_paths_rename(NULL, "nodes", oldname, node->name);
+	bNode *node = ptr->data;
+	bNodeTree *ngroup = (bNodeTree *)node->id;
+
+	if (ngroup) {
+		StructRNA *srna = ntreeInterfaceTypeGet(ngroup, TRUE);
+		if (srna)
+			return srna;
+	}
+	return &RNA_PropertyGroup;
 }
 
-static void rna_Node_width_range(PointerRNA *ptr, float *min, float *max, float *softmin, float *softmax)
+static StructRNA *rna_NodeGroupInputOutput_interface_typef(PointerRNA *ptr)
 {
-	bNode *node = ptr->data;
-	*min = *softmin = node->typeinfo->minwidth;
-	*max = *softmax = node->typeinfo->maxwidth;
+	bNodeTree *ntree = ptr->id.data;
+	
+	if (ntree) {
+		StructRNA *srna = ntreeInterfaceTypeGet(ntree, TRUE);
+		if (srna)
+			return srna;
+	}
+	return &RNA_PropertyGroup;
 }
 
-static void rna_Node_height_range(PointerRNA *ptr, float *min, float *max, float *softmin, float *softmax)
+static void rna_distance_matte_t1_set(PointerRNA *ptr, float value)
 {
-	bNode *node = ptr->data;
-	*min = *softmin = node->typeinfo->minheight;
-	*max = *softmax = node->typeinfo->maxheight;
+	bNode *node = (bNode *)ptr->data;
+	NodeChroma *chroma = node->storage;
+
+	chroma->t1 = value;
 }
 
-static void rna_NodeSocket_update(Main *bmain, Scene *scene, PointerRNA *ptr)
+static void rna_distance_matte_t2_set(PointerRNA *ptr, float value)
 {
-	bNodeTree *ntree = (bNodeTree *)ptr->id.data;
-	bNodeSocket *sock = (bNodeSocket *)ptr->data;
-	bNode *node;
-	
-	if (nodeFindNode(ntree, sock, &node, NULL, NULL))
-		node_update(bmain, scene, ntree, node);
+	bNode *node = (bNode *)ptr->data;
+	NodeChroma *chroma = node->storage;
+
+	chroma->t2 = value;
 }
 
-static void rna_NodeGroupSocket_update(Main *bmain, Scene *scene, PointerRNA *ptr)
+static void rna_difference_matte_t1_set(PointerRNA *ptr, float value)
 {
-	bNodeTree *ntree = (bNodeTree *)ptr->id.data;
-	bNodeSocket *sock = (bNodeSocket *)ptr->data;
-	bNode *node;
-	
-	ntreeUpdateTree(ntree);
-	
-	if (nodeFindNode(ntree, sock, &node, NULL, NULL))
-		node_update(bmain, scene, ntree, node);
+	bNode *node = (bNode *)ptr->data;
+	NodeChroma *chroma = node->storage;
+
+	chroma->t1 = value;
 }
 
-#if 0 /* UNUSED */
-static void rna_NodeLink_update(Main *bmain, Scene *scene, PointerRNA *ptr)
+static void rna_difference_matte_t2_set(PointerRNA *ptr, float value)
 {
-	bNodeTree *ntree = (bNodeTree *)ptr->id.data;
+	bNode *node = (bNode *)ptr->data;
+	NodeChroma *chroma = node->storage;
 
-	ntree->update |= NTREE_UPDATE_LINKS;
-	ntreeUpdateTree(ntree);
+	chroma->t2 = value;
 }
-#endif
 
-static void rna_NodeSocketInt_range(PointerRNA *ptr, int *min, int *max, int *softmin, int *softmax)
+/* Button Set Funcs for Matte Nodes */
+static void rna_Matte_t1_set(PointerRNA *ptr, float value)
 {
-	bNodeSocket *sock = (bNodeSocket *)ptr->data;
-	bNodeSocketValueInt *val = (bNodeSocketValueInt *)sock->default_value;
-	*softmin = val->min;
-	*softmax = val->max;
+	bNode *node = (bNode *)ptr->data;
+	NodeChroma *chroma = node->storage;
+	
+	chroma->t1 = value;
+	
+	if (value < chroma->t2) 
+		chroma->t2 = value;
 }
 
-static void rna_NodeSocketFloat_range(PointerRNA *ptr, float *min, float *max, float *softmin, float *softmax)
+static void rna_Matte_t2_set(PointerRNA *ptr, float value)
 {
-	bNodeSocket *sock = (bNodeSocket *)ptr->data;
-	bNodeSocketValueFloat *val = (bNodeSocketValueFloat *)sock->default_value;
-	*softmin = val->min;
-	*softmax = val->max;
+	bNode *node = (bNode *)ptr->data;
+	NodeChroma *chroma = node->storage;
+	
+	if (value > chroma->t1) 
+		value = chroma->t1;
+	
+	chroma->t2 = value;
 }
 
-static void rna_NodeSocketVector_range(PointerRNA *ptr, float *min, float *max, float *softmin, float *softmax)
+static void rna_Node_scene_set(PointerRNA *ptr, PointerRNA value)
 {
-	bNodeSocket *sock = (bNodeSocket *)ptr->data;
-	bNodeSocketValueVector *val = (bNodeSocketValueVector *)sock->default_value;
-	*softmin = val->min;
-	*softmax = val->max;
+	bNode *node = (bNode *)ptr->data;
+
+	if (node->id) {
+		id_us_min(node->id);
+		node->id = NULL;
+	}
+
+	node->id = value.data;
+
+	id_us_plus(node->id);
 }
 
 static void rna_Node_image_layer_update(Main *bmain, Scene *scene, PointerRNA *ptr)
@@ -782,274 +2631,13 @@ static EnumPropertyItem *rna_Node_channel_itemf(bContext *UNUSED(C), PointerRNA
 	return item;
 }
 
-static PointerRNA rna_NodeTree_active_node_get(PointerRNA *ptr)
-{
-	bNodeTree *ntree = (bNodeTree *)ptr->data;
-	bNode *node = nodeGetActive(ntree);
-	return rna_pointer_inherit_refine(ptr, &RNA_Node, node);
-}
-
-static void rna_NodeTree_active_node_set(PointerRNA *ptr, PointerRNA value)
-{
-	bNodeTree *ntree = (bNodeTree *)ptr->data;
-	bNode *node = (bNode *)value.data;
-	if (node && BLI_findindex(&ntree->nodes, node) != -1)
-		nodeSetActive(ntree, node);
-	else
-		nodeClearActive(ntree);
-}
-
-static bNode *rna_NodeTree_node_new(bNodeTree *ntree, bContext *C, ReportList *reports,
-                                    int type, bNodeTree *group)
-{
-	bNode *node;
-	bNodeTemplate ntemp;
-
-	if (type == NODE_GROUP && group == NULL) {
-		BKE_report(reports, RPT_ERROR, "Node type 'GROUP' missing group argument");
-		return NULL;
-	}
-	
-	ntemp.type = type;
-	ntemp.ngroup = group;
-	ntemp.scene = CTX_data_scene(C);
-	ntemp.main = CTX_data_main(C);
-	node = nodeAddNode(ntree, &ntemp);
-	
-	if (node == NULL) {
-		BKE_report(reports, RPT_ERROR, "Unable to create node");
-	}
-	else {
-		ntreeUpdateTree(ntree); /* update group node socket links*/
-		nodeUpdate(ntree, node);
-		WM_main_add_notifier(NC_NODE | NA_EDITED, ntree);
-
-		if (group)
-			id_us_plus(&group->id);
-	}
-
-	return node;
-}
-
-static bNode *rna_NodeTree_node_composite_new(bNodeTree *ntree, bContext *C, ReportList *reports,
-                                              int type, bNodeTree *group)
-{
-	/* raises error on failure */
-	bNode *node = rna_NodeTree_node_new(ntree, C, reports, type, group);
-	
-	if (node) {
-		if (ELEM4(node->type, CMP_NODE_COMPOSITE, CMP_NODE_DEFOCUS, CMP_NODE_OUTPUT_FILE, CMP_NODE_R_LAYERS)) {
-			/* annoying, find the node tree we are in, scene can be NULL */
-			Scene *scene;
-			for (scene = CTX_data_main(C)->scene.first; scene; scene = scene->id.next) {
-				if (scene->nodetree == ntree) {
-					break;
-				}
-			}
-			node->id = (ID *)scene;
-			id_us_plus(node->id);
-		}
-
-		ntreeCompositForceHidden(ntree, CTX_data_scene(C));
-		ntreeUpdateTree(ntree);
-	}
-
-	return node;
-}
-
-static bNode *rna_NodeTree_node_texture_new(bNodeTree *ntree, bContext *C, ReportList *reports,
-                                            int type, bNodeTree *group)
-{
-	/* raises error on failure */
-	bNode *node = rna_NodeTree_node_new(ntree, C, reports, type, group);
-
-	if (node) {
-		ntreeTexCheckCyclics(ntree);
-	}
-
-	return node;
-}
-
-static void rna_NodeTree_node_remove(bNodeTree *ntree, ReportList *reports, PointerRNA *node_ptr)
-{
-	bNode *node = node_ptr->data;
-	if (BLI_findindex(&ntree->nodes, node) == -1) {
-		BKE_reportf(reports, RPT_ERROR, "Unable to locate node '%s' in node tree", node->name);
-		return;
-	}
-
-	id_us_min(node->id);
-	nodeFreeNode(ntree, node);
-	RNA_POINTER_INVALIDATE(node_ptr);
-
-	ntreeUpdateTree(ntree); /* update group node socket links */
-	WM_main_add_notifier(NC_NODE | NA_EDITED, ntree);
-}
-
-static void rna_NodeTree_node_clear(bNodeTree *ntree)
-{
-	bNode *node = ntree->nodes.first;
-
-	while (node) {
-		bNode *next_node = node->next;
-
-		if (node->id)
-			id_us_min(node->id);
-
-		nodeFreeNode(ntree, node);
-
-		node = next_node;
-	}
-
-	ntreeUpdateTree(ntree); /* update group node socket links*/
-
-	WM_main_add_notifier(NC_NODE | NA_EDITED, ntree);
-}
-
-static bNodeLink *rna_NodeTree_link_new(bNodeTree *ntree, ReportList *reports,
-                                        bNodeSocket *fromsock, bNodeSocket *tosock)
-{
-	bNodeLink *ret;
-	bNode *fromnode = NULL, *tonode = NULL;
-	int from_in_out, to_in_out;
-
-	nodeFindNode(ntree, fromsock, &fromnode, NULL, &from_in_out);
-	nodeFindNode(ntree, tosock, &tonode, NULL, &to_in_out);
-	
-	if (&from_in_out == &to_in_out) {
-		BKE_report(reports, RPT_ERROR, "Same input/output direction of sockets");
-		return NULL;
-	}
-
-	/* unlink node input socket */
-	if (to_in_out == SOCK_IN)
-		nodeRemSocketLinks(ntree, tosock);
-	else
-		nodeRemSocketLinks(ntree, fromsock);
-
-	ret = nodeAddLink(ntree, fromnode, fromsock, tonode, tosock);
-	
-	if (ret) {
-		if (tonode)
-			nodeUpdate(ntree, tonode);
-
-		ntreeUpdateTree(ntree);
-
-		WM_main_add_notifier(NC_NODE | NA_EDITED, ntree);
-	}
-
-	return ret;
-}
-
-static void rna_NodeTree_link_remove(bNodeTree *ntree, ReportList *reports, PointerRNA *link_ptr)
-{
-	bNodeLink *link = link_ptr->data;
-	if (BLI_findindex(&ntree->links, link) == -1) {
-		BKE_report(reports, RPT_ERROR, "Unable to locate link in node tree");
-		return;
-	}
-
-	nodeRemLink(ntree, link);
-	RNA_POINTER_INVALIDATE(link_ptr);
-
-	ntreeUpdateTree(ntree);
-	WM_main_add_notifier(NC_NODE | NA_EDITED, ntree);
-}
-
-static void rna_NodeTree_link_clear(bNodeTree *ntree)
-{
-	bNodeLink *link = ntree->links.first;
-
-	while (link) {
-		bNodeLink *next_link = link->next;
-
-		nodeRemLink(ntree, link);
-
-		link = next_link;
-	}
-	ntreeUpdateTree(ntree);
-
-	WM_main_add_notifier(NC_NODE | NA_EDITED, ntree);
-}
-
-static bNodeSocket *rna_NodeTree_input_new(bNodeTree *ntree, ReportList *UNUSED(reports), const char *name, int type)
-{
-	/* XXX should check if tree is a group here! no good way to do this currently. */
-	bNodeSocket *gsock = node_group_add_socket(ntree, name, type, SOCK_IN);
-	
-	ntree->update |= NTREE_UPDATE_GROUP_IN;
-	ntreeUpdateTree(ntree);
-	WM_main_add_notifier(NC_NODE | NA_EDITED, ntree);
-	return gsock;
-}
-
-static bNodeSocket *rna_NodeTree_output_new(bNodeTree *ntree, ReportList *UNUSED(reports), const char *name, int type)
-{
-	/* XXX should check if tree is a group here! no good way to do this currently. */
-	bNodeSocket *gsock = node_group_add_socket(ntree, name, type, SOCK_OUT);
-	
-	ntree->update |= NTREE_UPDATE_GROUP_OUT;
-	ntreeUpdateTree(ntree);
-	WM_main_add_notifier(NC_NODE | NA_EDITED, ntree);
-	return gsock;
-}
-
-static bNodeSocket *rna_NodeTree_input_expose(bNodeTree *ntree, ReportList *reports, bNodeSocket *sock, int add_link)
-{
-	bNode *node;
-	bNodeSocket *gsock;
-	int index, in_out;
-	
-	if (!nodeFindNode(ntree, sock, &node, &index, &in_out))
-		BKE_report(reports, RPT_ERROR, "Unable to locate socket in node tree");
-	else if (in_out != SOCK_IN)
-		BKE_report(reports, RPT_ERROR, "Socket is not an input");
-	else {
-		/* XXX should check if tree is a group here! no good way to do this currently. */
-		gsock = node_group_add_socket(ntree, sock->name, sock->type, SOCK_IN);
-		if (add_link)
-			nodeAddLink(ntree, NULL, gsock, node, sock);
-		
-		ntree->update |= NTREE_UPDATE_GROUP_IN;
-		ntreeUpdateTree(ntree);
-		WM_main_add_notifier(NC_NODE | NA_EDITED, ntree);
-		return gsock;
-	}
-	return NULL;
-}
-
-static bNodeSocket *rna_NodeTree_output_expose(bNodeTree *ntree, ReportList *reports, bNodeSocket *sock, int add_link)
-{
-	bNode *node;
-	bNodeSocket *gsock;
-	int index, in_out;
-	
-	if (!nodeFindNode(ntree, sock, &node, &index, &in_out))
-		BKE_report(reports, RPT_ERROR, "Unable to locate socket in node tree");
-	else if (in_out != SOCK_OUT)
-		BKE_report(reports, RPT_ERROR, "Socket is not an output");
-	else {
-		/* XXX should check if tree is a group here! no good way to do this currently. */
-		gsock = node_group_add_socket(ntree, sock->name, sock->type, SOCK_OUT);
-		if (add_link)
-			nodeAddLink(ntree, node, sock, NULL, gsock);
-		
-		ntree->update |= NTREE_UPDATE_GROUP_OUT;
-		ntreeUpdateTree(ntree);
-		WM_main_add_notifier(NC_NODE | NA_EDITED, ntree);
-		return gsock;
-	}
-	return NULL;
-}
-
-static void rna_Image_Node_update_id(Main *bmain, Scene *scene, PointerRNA *ptr)
+static void rna_Image_Node_update_id(Main *UNUSED(bmain), Scene *UNUSED(scene), PointerRNA *ptr)
 {
 	bNodeTree *ntree = (bNodeTree *)ptr->id.data;
 	bNode *node = (bNode *)ptr->data;
 
 	node->update |= NODE_UPDATE_ID;
-	node_update(bmain, scene, ntree, node);
-	node->update &= ~NODE_UPDATE_ID;
+	nodeUpdate(ntree, node);	/* to update image node sockets */
 }
 
 static void rna_Mapping_Node_update(Main *bmain, Scene *scene, PointerRNA *ptr)
@@ -1073,6 +2661,8 @@ static PointerRNA rna_NodeOutputFile_slot_file_get(CollectionPropertyIterator *i
 	return ptr;
 }
 
+/* ******** Node Socket Types ******** */
+
 static PointerRNA rna_NodeOutputFile_slot_layer_get(CollectionPropertyIterator *iter)
 {
 	PointerRNA ptr;
@@ -1126,53 +2716,6 @@ static void rna_NodeOutputFileSlotLayer_name_set(PointerRNA *ptr, const char *va
 	}
 }
 
-static bNodeSocket *rna_ShaderNodeScript_find_socket(bNode *node, const char *name, int is_output)
-{
-	bNodeSocket *sock;
-
-	if (is_output) {
-		for (sock = node->outputs.first; sock; sock = sock->next) {
-			if (strcmp(sock->name, name) == 0) {
-				return sock;
-			}
-		}
-	}
-	else {
-		for (sock = node->inputs.first; sock; sock = sock->next) {
-			if (strcmp(sock->name, name) == 0) {
-				return sock;
-			}
-		}
-	}
-
-	return NULL;
-}
-
-static void rna_ShaderNodeScript_remove_socket(ID *id, bNode *node, bNodeSocket *sock)
-{
-	bNodeTree *ntree = (bNodeTree *)id;
-	
-	nodeRemoveSocket(ntree, node, sock);
-	
-	ED_node_generic_update(G.main, ntree, node);
-}
-
-static bNodeSocket *rna_ShaderNodeScript_add_socket(ID *id, bNode *node, const char *name, int type, int is_output)
-{
-	bNodeTree *ntree = (bNodeTree *)id;
-	bNodeSocket *sock;
-	
-	/* replace existing socket with the same name, to keep it unique */
-	sock = rna_ShaderNodeScript_find_socket(node, name, is_output);
-	if (sock)
-		nodeRemoveSocket(ntree, node, sock);
-	sock = nodeAddSocket(ntree, node, (is_output ? SOCK_OUT : SOCK_IN), name, type);
-	
-	ED_node_generic_update(G.main, ntree, node);
-	
-	return sock;
-}
-
 static void rna_ShaderNodeScript_mode_set(PointerRNA *ptr, int value)
 {
 	bNode *node = (bNode *)ptr->data;
@@ -1236,19 +2779,6 @@ static void rna_ShaderNodeScript_bytecode_set(PointerRNA *ptr, const char *value
 		nss->bytecode = NULL;
 }
 
-static IDProperty *rna_ShaderNodeScript_idprops(PointerRNA *ptr, bool create)
-{
-	bNode *node = (bNode *)ptr->data;
-	NodeShaderScript *nss = node->storage;
-
-	if (create && !nss->prop) {
-		IDPropertyTemplate val = {0};
-		nss->prop = IDP_New(IDP_GROUP, &val, "RNA_ShaderNodeScript ID properties");
-	}
-
-	return nss->prop;
-}
-
 static void rna_ShaderNodeScript_update(Main *bmain, Scene *scene, PointerRNA *ptr)
 {
 	bNodeTree *ntree = (bNodeTree *)ptr->id.data;
@@ -1262,7 +2792,7 @@ static void rna_ShaderNodeScript_update(Main *bmain, Scene *scene, PointerRNA *p
 		RE_engine_free(engine);
 	}
 
-	node_update(bmain, scene, ntree, node);
+	ED_node_tag_update_nodetree(bmain, ntree);
 }
 
 #else
@@ -1311,139 +2841,36 @@ static EnumPropertyItem node_script_mode_items[] = {
 	{0, NULL, 0, NULL, NULL}
 };
 
-#define MaxNodes 50000
-
-enum
-{
-	Category_GroupNode,
-	Category_LayoutNode,
-	Category_ShaderNode,
-	Category_CompositorNode,
-	Category_TextureNode,
-};
-
-typedef struct NodeInfo {
-	int defined;
-	int category;
-	const char *enum_name;
-	const char *struct_name;
-	const char *base_name;
-	int icon;
-	const char *ui_name;
-	const char *ui_desc;
-} NodeInfo;
-
-static NodeInfo nodes[MaxNodes];
-
-static void reg_node(int ID, int category, const char *enum_name, const char *struct_name,
-                     const char *base_name, const char *ui_name, const char *ui_desc)
-{
-	NodeInfo *ni = nodes + ID;
-	
-	ni->defined = 1;
-	ni->category = category;
-	ni->enum_name = enum_name;
-	ni->struct_name = struct_name;
-	ni->base_name = base_name;
-	ni->ui_name = ui_name;
-	ni->ui_desc = ui_desc;
-}
-
-static void init(void)
-{
-	memset(nodes, 0, sizeof(nodes));
-	
-	#define DefNode(Category, ID, DefFunc, EnumName, StructName, UIName, UIDesc) \
-		reg_node(ID, Category_##Category, EnumName, STRINGIFY_ARG(Category##StructName), #Category, UIName, UIDesc);
-		
-	#include "rna_nodetree_types.h"
-	
-	reg_node(NODE_GROUP, Category_GroupNode, "GROUP", "NodeGroup", "SpecialNode", "Group", "");
-	reg_node(NODE_FRAME, Category_LayoutNode, "FRAME", "NodeFrame", "SpecialNode", "Frame", "");
-	reg_node(NODE_REROUTE, Category_LayoutNode, "REROUTE", "NodeReroute", "SpecialNode", "Reroute", "");
-}
+/* -- Common nodes ---------------------------------------------------------- */
 
-static StructRNA *def_node(BlenderRNA *brna, int node_id)
+static void def_group_input(StructRNA *srna)
 {
-	StructRNA *srna;
-	FunctionRNA *func;
-	PropertyRNA *parm;
-	NodeInfo *node = nodes + node_id;
-	
-	srna = RNA_def_struct(brna, node->struct_name, node->base_name);
-	RNA_def_struct_ui_text(srna, node->ui_name, node->ui_desc);
-	RNA_def_struct_sdna(srna, "bNode");
-	
-	func = RNA_def_function(srna, "get_node_type", "rna_Node_get_node_type");
-	RNA_def_function_ui_description(func, "Get the identifier of the node type");
-	RNA_def_function_flag(func, FUNC_NO_SELF | FUNC_USE_SELF_TYPE);
-	parm = RNA_def_string(func, "result", "", 0, "Result", "");
-	RNA_def_function_return(func, parm);
+	PropertyRNA *prop;
 	
-	return srna;
+	prop = RNA_def_property(srna, "interface", PROP_POINTER, PROP_NONE);
+	RNA_def_property_pointer_funcs(prop, NULL, NULL, "rna_NodeGroupInputOutput_interface_typef", NULL);
+	RNA_def_property_struct_type(prop, "PropertyGroup");
+	RNA_def_property_flag(prop, PROP_IDPROPERTY);
+	RNA_def_property_ui_text(prop, "Interface", "Interface socket data");
 }
 
-static void alloc_node_type_items(EnumPropertyItem *items, int category)
+static void def_group_output(StructRNA *srna)
 {
-	int i;
-	int count = 4;
-	EnumPropertyItem *item  = items;
-	
-	for (i = 0; i < MaxNodes; i++)
-		if (nodes[i].defined && nodes[i].category == category)
-			count++;
-		
-	/*item = items = MEM_callocN(count * sizeof(EnumPropertyItem), "alloc_node_type_items");*/
-	
-	for (i = 0; i < MaxNodes; i++) {
-		NodeInfo *node = nodes + i;
-		if (node->defined && node->category == category) {
-			item->value = i;
-			item->identifier = node->enum_name;
-			item->icon = node->icon;
-			item->name = node->ui_name;
-			item->description = node->ui_desc;
-		
-			item++;
-		}
-	}
-
-	item->value = NODE_GROUP;
-	item->identifier = "GROUP";
-	item->icon = 0;
-	item->name = "Group";
-	item->description = "";
-	
-	item++;
-	
-	item->value = NODE_REROUTE;
-	item->identifier = "REROUTE";
-	item->icon = 0;
-	item->name = "Reroute";
-	item->description = "";
-	
-	item++;
-	
-	item->value = NODE_FRAME;
-	item->identifier = "FRAME";
-	item->icon = 0;
-	item->name = "Frame";
-	item->description = "";
-	
-	item++;
-	
-	/* NOTE!, increase 'count' when adding items here */
+	PropertyRNA *prop;
 	
-	memset(item, 0, sizeof(EnumPropertyItem));
+	prop = RNA_def_property(srna, "interface", PROP_POINTER, PROP_NONE);
+	RNA_def_property_pointer_funcs(prop, NULL, NULL, "rna_NodeGroupInputOutput_interface_typef", NULL);
+	RNA_def_property_struct_type(prop, "PropertyGroup");
+	RNA_def_property_flag(prop, PROP_IDPROPERTY);
+	RNA_def_property_ui_text(prop, "Interface", "Interface socket data");
 }
 
-
-/* -- Common nodes ---------------------------------------------------------- */
-
 static void def_group(StructRNA *srna)
 {
 	PropertyRNA *prop;
 	
+	RNA_def_struct_register_funcs(srna, "rna_NodeGroup_register", "rna_Node_unregister", NULL);
+	
 	prop = RNA_def_property(srna, "node_tree", PROP_POINTER, PROP_NONE);
 	RNA_def_property_pointer_sdna(prop, NULL, "id");
 	RNA_def_property_struct_type(prop, "NodeTree");
@@ -1451,6 +2878,18 @@ static void def_group(StructRNA *srna)
 	RNA_def_property_flag(prop, PROP_EDITABLE);
 	RNA_def_property_ui_text(prop, "Node Tree", "");
 	RNA_def_property_update(prop, NC_NODE | NA_EDITED, "rna_NodeGroup_update");
+
+	prop = RNA_def_property(srna, "interface", PROP_POINTER, PROP_NONE);
+	RNA_def_property_pointer_funcs(prop, NULL, NULL, "rna_NodeGroup_interface_typef", NULL);
+	RNA_def_property_struct_type(prop, "PropertyGroup");
+	RNA_def_property_flag(prop, PROP_IDPROPERTY);
+	RNA_def_property_ui_text(prop, "Interface", "Interface socket data");
+
+	/* registration */
+	prop = RNA_def_property(srna, "bl_group_tree_idname", PROP_STRING, PROP_NONE);
+	RNA_def_property_string_sdna(prop, NULL, "typeinfo->group_tree_idname");
+	RNA_def_property_flag(prop, PROP_REGISTER | PROP_NEVER_CLAMP);
+	RNA_def_property_ui_text(prop, "Group Tree Type", "");
 }
 
 static void def_frame(StructRNA *srna)
@@ -2062,8 +3501,7 @@ static void def_sh_tangent(StructRNA *srna)
 
 static void def_sh_script(StructRNA *srna)
 {
-	FunctionRNA *func;
-	PropertyRNA *prop, *parm;
+	PropertyRNA *prop;
 
 	prop = RNA_def_property(srna, "script", PROP_POINTER, PROP_NONE);
 	RNA_def_property_pointer_sdna(prop, NULL, "id");
@@ -2073,7 +3511,6 @@ static void def_sh_script(StructRNA *srna)
 	RNA_def_property_update(prop, NC_NODE | NA_EDITED, "rna_ShaderNodeScript_update");
 	
 	RNA_def_struct_sdna_from(srna, "NodeShaderScript", "storage");
-	RNA_def_struct_idprops_func(srna, "rna_ShaderNodeScript_idprops");
 	
 	prop = RNA_def_property(srna, "filepath", PROP_STRING, PROP_FILEPATH);
 	RNA_def_property_ui_text(prop, "File Path", "Shader script path");
@@ -2104,7 +3541,8 @@ static void def_sh_script(StructRNA *srna)
 	RNA_def_struct_sdna_from(srna, "bNode", NULL);
 	
 	/* API functions */
-	
+
+#if 0	/* XXX TODO use general node api for this */
 	func = RNA_def_function(srna, "find_socket", "rna_ShaderNodeScript_find_socket");
 	RNA_def_function_ui_description(func, "Find a socket by name");
 	parm = RNA_def_string(func, "name", "", 0, "Socket name", "");
@@ -2129,6 +3567,7 @@ static void def_sh_script(StructRNA *srna)
 	RNA_def_function_flag(func, FUNC_USE_SELF_ID);
 	parm = RNA_def_pointer(func, "sock", "NodeSocket", "Socket", "");
 	RNA_def_property_flag(parm, PROP_REQUIRED | PROP_NEVER_NULL);
+#endif
 }
 
 /* -- Compositor Nodes ------------------------------------------------------ */
@@ -4382,390 +5821,574 @@ static void def_tex_bricks(StructRNA *srna)
 
 /* -------------------------------------------------------------------------- */
 
-static EnumPropertyItem shader_node_type_items[MaxNodes];
 static void rna_def_shader_node(BlenderRNA *brna)
 {
 	StructRNA *srna;
-	PropertyRNA *prop;
 	
-	alloc_node_type_items(shader_node_type_items, Category_ShaderNode);
-
 	srna = RNA_def_struct(brna, "ShaderNode", "Node");
 	RNA_def_struct_ui_text(srna, "Shader Node", "Material shader node");
 	RNA_def_struct_sdna(srna, "bNode");
-
-	prop = RNA_def_property(srna, "type", PROP_ENUM, PROP_NONE);
-	RNA_def_property_clear_flag(prop, PROP_EDITABLE);
-	RNA_def_property_enum_items(prop, shader_node_type_items);
-	RNA_def_property_ui_text(prop, "Type", "");
+	RNA_def_struct_register_funcs(srna, "rna_ShaderNode_register", "rna_Node_unregister", NULL);
 }
 
-static EnumPropertyItem compositor_node_type_items[MaxNodes];
 static void rna_def_compositor_node(BlenderRNA *brna)
 {
 	StructRNA *srna;
-	PropertyRNA *prop;
-	
-	alloc_node_type_items(compositor_node_type_items, Category_CompositorNode);
+	FunctionRNA *func;
 	
 	srna = RNA_def_struct(brna, "CompositorNode", "Node");
 	RNA_def_struct_ui_text(srna, "Compositor Node", "");
 	RNA_def_struct_sdna(srna, "bNode");
-
-	prop = RNA_def_property(srna, "type", PROP_ENUM, PROP_NONE);
-	RNA_def_property_clear_flag(prop, PROP_EDITABLE);
-	RNA_def_property_enum_items(prop, compositor_node_type_items);
-	RNA_def_property_ui_text(prop, "Type", "");
+	RNA_def_struct_register_funcs(srna, "rna_CompositorNode_register", "rna_Node_unregister", NULL);
+	
+	/* compositor node need_exec flag */
+	func = RNA_def_function(srna, "tag_need_exec", "rna_CompositorNode_tag_need_exec");
+	RNA_def_function_ui_description(func, "Tag the node for compositor update");
 }
 
-static EnumPropertyItem texture_node_type_items[MaxNodes];
 static void rna_def_texture_node(BlenderRNA *brna)
 {
 	StructRNA *srna;
-	PropertyRNA *prop;
-	
-	alloc_node_type_items(texture_node_type_items, Category_TextureNode);
 	
 	srna = RNA_def_struct(brna, "TextureNode", "Node");
 	RNA_def_struct_ui_text(srna, "Texture Node", "");
 	RNA_def_struct_sdna(srna, "bNode");
-
-	prop = RNA_def_property(srna, "type", PROP_ENUM, PROP_NONE);
-	RNA_def_property_clear_flag(prop, PROP_EDITABLE);
-	RNA_def_property_enum_items(prop, texture_node_type_items);
-	RNA_def_property_ui_text(prop, "Type", "");
+	RNA_def_struct_register_funcs(srna, "rna_TextureNode_register", "rna_Node_unregister", NULL);
 }
 
-static void rna_def_special_node(BlenderRNA *brna)
+/* -------------------------------------------------------------------------- */
+
+static void rna_def_node_socket(BlenderRNA *brna)
 {
 	StructRNA *srna;
 	PropertyRNA *prop;
+	PropertyRNA *parm;
+	FunctionRNA *func;
+	
+	static float default_draw_color[] = { 0.0f, 0.0f, 0.0f, 1.0f };
+	
+	srna = RNA_def_struct(brna, "NodeSocket", NULL);
+	RNA_def_struct_ui_text(srna, "Node Socket", "Input or output socket of a node");
+	RNA_def_struct_sdna(srna, "bNodeSocket");
+	RNA_def_struct_refine_func(srna, "rna_NodeSocket_refine");
+	RNA_def_struct_ui_icon(srna, ICON_PLUG);
+	RNA_def_struct_path_func(srna, "rna_NodeSocket_path");
+	RNA_def_struct_register_funcs(srna, "rna_NodeSocket_register", "rna_NodeSocket_unregister", NULL);
+	RNA_def_struct_idprops_func(srna, "rna_NodeSocket_idprops");
 
-	static EnumPropertyItem specific_node_type_items[] = {
-		{NODE_GROUP, "GROUP", ICON_NODE, "Group", ""},
-		{NODE_FRAME, "FRAME", ICON_NODE, "Frame", ""},
-		{NODE_REROUTE, "REROUTE", ICON_NODE, "Reroute", ""},
-		{0, NULL, 0, NULL, NULL}
-	};
-
-	srna = RNA_def_struct(brna, "SpecialNode", "Node");
-	RNA_def_struct_ui_text(srna, "Special Node", "");
-	RNA_def_struct_sdna(srna, "bNode");
+	prop = RNA_def_property(srna, "name", PROP_STRING, PROP_NONE);
+	RNA_def_property_ui_text(prop, "Name", "Socket name");
+	RNA_def_struct_name_property(srna, prop);
+	RNA_def_property_update(prop, NC_NODE | NA_EDITED, "rna_NodeSocket_update");
 
-	prop = RNA_def_property(srna, "type", PROP_ENUM, PROP_NONE);
+	prop = RNA_def_property(srna, "identifier", PROP_STRING, PROP_NONE);
+	RNA_def_property_string_sdna(prop, NULL, "identifier");
 	RNA_def_property_clear_flag(prop, PROP_EDITABLE);
-	RNA_def_property_enum_items(prop, specific_node_type_items);
-	RNA_def_property_ui_text(prop, "Type", "");
-}
+	RNA_def_property_ui_text(prop, "Identifier", "Unique identifier for mapping sockets");
 
-/* -------------------------------------------------------------------------- */
+	prop = RNA_def_property(srna, "in_out", PROP_ENUM, PROP_NONE);
+	RNA_def_property_enum_sdna(prop, NULL, "in_out");
+	RNA_def_property_enum_items(prop, node_socket_in_out_items);
+	RNA_def_property_enum_default(prop, SOCK_IN);
+	RNA_def_property_clear_flag(prop, PROP_EDITABLE);
+	RNA_def_property_ui_text(prop, "Input or Output", "Input or Output type");
 
-static void rna_def_nodetree_link_api(BlenderRNA *brna, PropertyRNA *cprop)
-{
-	StructRNA *srna;
-	PropertyRNA *parm;
-	FunctionRNA *func;
+	prop = RNA_def_property(srna, "hide", PROP_BOOLEAN, PROP_NONE);
+	RNA_def_property_boolean_sdna(prop, NULL, "flag", SOCK_HIDDEN);
+	RNA_def_property_boolean_funcs(prop, NULL, "rna_NodeSocket_hide_set");
+	RNA_def_property_ui_text(prop, "Hide", "Hide the socket");
+	RNA_def_property_update(prop, NC_NODE | ND_DISPLAY, NULL);
 
-	RNA_def_property_srna(cprop, "NodeLinks");
-	srna = RNA_def_struct(brna, "NodeLinks", NULL);
-	RNA_def_struct_sdna(srna, "bNodeTree");
-	RNA_def_struct_ui_text(srna, "Node Links", "Collection of Node Links");
+	prop = RNA_def_property(srna, "enabled", PROP_BOOLEAN, PROP_NONE);
+	RNA_def_property_boolean_negative_sdna(prop, NULL, "flag", SOCK_UNAVAIL);
+	RNA_def_property_ui_text(prop, "Enabled", "Enable the socket");
+	RNA_def_property_update(prop, NC_NODE | ND_DISPLAY, NULL);
 
-	func = RNA_def_function(srna, "new", "rna_NodeTree_link_new");
-	RNA_def_function_ui_description(func, "Add a node link to this node tree");
-	RNA_def_function_flag(func, FUNC_USE_REPORTS);
-	parm = RNA_def_pointer(func, "input", "NodeSocket", "", "The input socket");
-	RNA_def_property_flag(parm, PROP_REQUIRED);
-	parm = RNA_def_pointer(func, "output", "NodeSocket", "", "The output socket");
-	RNA_def_property_flag(parm, PROP_REQUIRED);
-	/* return */
-	parm = RNA_def_pointer(func, "link", "NodeLink", "", "New node link");
-	RNA_def_function_return(func, parm);
+	prop = RNA_def_property(srna, "is_linked", PROP_BOOLEAN, PROP_NONE);
+	RNA_def_property_boolean_sdna(prop, NULL, "flag", SOCK_IN_USE);
+	RNA_def_property_clear_flag(prop, PROP_EDITABLE);
+	RNA_def_property_ui_text(prop, "Linked", "True if the socket is connected");
 
-	func = RNA_def_function(srna, "remove", "rna_NodeTree_link_remove");
-	RNA_def_function_ui_description(func, "remove a node link from the node tree");
-	RNA_def_function_flag(func, FUNC_USE_REPORTS);
-	parm = RNA_def_pointer(func, "link", "NodeLink", "", "The node link to remove");
-	RNA_def_property_flag(parm, PROP_REQUIRED | PROP_NEVER_NULL | PROP_RNAPTR);
-	RNA_def_property_clear_flag(parm, PROP_THICK_WRAP);
+	prop = RNA_def_property(srna, "show_expanded", PROP_BOOLEAN, PROP_NONE);
+	RNA_def_property_boolean_negative_sdna(prop, NULL, "flag", SOCK_COLLAPSED);
+	RNA_def_property_ui_text(prop, "Expanded", "Socket links are expanded in the user interface");
+	RNA_def_property_update(prop, NC_NODE | NA_EDITED, NULL);
 
-	func = RNA_def_function(srna, "clear", "rna_NodeTree_link_clear");
-	RNA_def_function_ui_description(func, "remove all node links from the node tree");
-}
+	prop = RNA_def_property(srna, "node", PROP_POINTER, PROP_NONE);
+	RNA_def_property_pointer_funcs(prop, "rna_NodeSocket_node_get", NULL, NULL, NULL);
+	RNA_def_property_struct_type(prop, "Node");
+	RNA_def_property_clear_flag(prop, PROP_EDITABLE);
+	RNA_def_property_ui_text(prop, "Node", "Node owning this socket");
 
-/* shared between all note tree types*/
-static void rna_def_nodetree_active_api(StructRNA *srna, PropertyRNA *UNUSED(cprop))
-{
-	PropertyRNA *prop;
+	/* NB: the type property is used by standard sockets.
+	 * Ideally should be defined only for the registered subclass,
+	 * but to use the existing DNA is added in the base type here.
+	 * Future socket types can ignore or override this if needed.
+	 */
+	prop = RNA_def_property(srna, "type", PROP_ENUM, PROP_NONE);
+	RNA_def_property_enum_sdna(prop, NULL, "type");
+	RNA_def_property_enum_items(prop, node_socket_type_items);
+	RNA_def_property_enum_default(prop, SOCK_FLOAT);
+	RNA_def_property_ui_text(prop, "Type", "Data type");
+	RNA_def_property_update(prop, NC_NODE | NA_EDITED, "rna_NodeSocket_update");
+
+	/* registration */
+	prop = RNA_def_property(srna, "bl_idname", PROP_STRING, PROP_NONE);
+	RNA_def_property_string_sdna(prop, NULL, "typeinfo->idname");
+	RNA_def_property_string_funcs(prop, "rna_NodeSocket_bl_idname_get", "rna_NodeSocket_bl_idname_length", NULL);
+	RNA_def_property_flag(prop, PROP_REGISTER | PROP_NEVER_CLAMP);
+	RNA_def_property_ui_text(prop, "ID Name", "");
+
+	/* draw socket */
+	func = RNA_def_function(srna, "draw", NULL);
+	RNA_def_function_ui_description(func, "Draw socket");
+	RNA_def_function_flag(func, FUNC_REGISTER);
+	parm = RNA_def_pointer(func, "context", "Context", "", "");
+	RNA_def_property_flag(parm, PROP_REQUIRED | PROP_NEVER_NULL);
+	parm = RNA_def_property(func, "layout", PROP_POINTER, PROP_NONE);
+	RNA_def_property_struct_type(parm, "UILayout");
+	RNA_def_property_ui_text(parm, "Layout", "Layout in the UI");
+	RNA_def_property_flag(parm, PROP_REQUIRED | PROP_NEVER_NULL);
+	parm = RNA_def_property(func, "node", PROP_POINTER, PROP_NONE);
+	RNA_def_property_struct_type(parm, "Node");
+	RNA_def_property_ui_text(parm, "Node", "Node the socket belongs to");
+	RNA_def_property_flag(parm, PROP_REQUIRED | PROP_NEVER_NULL | PROP_RNAPTR);
 
-	prop = RNA_def_property(srna, "active", PROP_POINTER, PROP_NONE);
-	RNA_def_property_struct_type(prop, "Node");
-	RNA_def_property_pointer_funcs(prop, "rna_NodeTree_active_node_get", "rna_NodeTree_active_node_set", NULL, NULL);
-	RNA_def_property_flag(prop, PROP_EDITABLE | PROP_NEVER_UNLINK);
-	RNA_def_property_ui_text(prop, "Active Node", "Active node in this tree");
-	RNA_def_property_update(prop, NC_SCENE | ND_OB_ACTIVE, NULL);
+	func = RNA_def_function(srna, "draw_color", NULL);
+	RNA_def_function_ui_description(func, "Color of the socket icon");
+	RNA_def_function_flag(func, FUNC_REGISTER);
+	parm = RNA_def_pointer(func, "context", "Context", "", "");
+	RNA_def_property_flag(parm, PROP_REQUIRED | PROP_NEVER_NULL);
+	parm = RNA_def_property(func, "node", PROP_POINTER, PROP_NONE);
+	RNA_def_property_struct_type(parm, "Node");
+	RNA_def_property_ui_text(parm, "Node", "Node the socket belongs to");
+	RNA_def_property_flag(parm, PROP_REQUIRED | PROP_NEVER_NULL | PROP_RNAPTR);
+	parm = RNA_def_float_array(func, "color", 4, default_draw_color, 0.0f, 1.0f, "Color", "", 0.0f, 1.0f);
+	RNA_def_function_output(func, parm);
 }
 
-static void rna_def_composite_nodetree_api(BlenderRNA *brna, PropertyRNA *cprop)
+static void rna_def_node_socket_interface(BlenderRNA *brna)
 {
 	StructRNA *srna;
+	PropertyRNA *prop;
 	PropertyRNA *parm;
 	FunctionRNA *func;
+	
+	static float default_draw_color[] = { 0.0f, 0.0f, 0.0f, 1.0f };
+	
+	srna = RNA_def_struct(brna, "NodeSocketInterface", NULL);
+	RNA_def_struct_ui_text(srna, "Node Socket Template", "Parameters to define node sockets");
+	/* XXX Using bNodeSocket DNA for templates is a compatibility hack.
+	 * This allows to keep the inputs/outputs lists in bNodeTree working for earlier versions
+	 * and at the same time use them for socket templates in groups.
+	 */
+	RNA_def_struct_sdna(srna, "bNodeSocket");
+	RNA_def_struct_refine_func(srna, "rna_NodeSocketInterface_refine");
+	RNA_def_struct_path_func(srna, "rna_NodeSocketInterface_path");
+	RNA_def_struct_idprops_func(srna, "rna_NodeSocketInterface_idprops");
+	RNA_def_struct_register_funcs(srna, "rna_NodeSocketInterface_register", "rna_NodeSocketInterface_unregister", NULL);
 
-	RNA_def_property_srna(cprop, "CompositorNodes");
-	srna = RNA_def_struct(brna, "CompositorNodes", NULL);
-	RNA_def_struct_sdna(srna, "bNodeTree");
-	RNA_def_struct_ui_text(srna, "Compositor Nodes", "Collection of Compositor Nodes");
+	prop = RNA_def_property(srna, "name", PROP_STRING, PROP_NONE);
+	RNA_def_property_ui_text(prop, "Name", "Socket name");
+	RNA_def_struct_name_property(srna, prop);
+	RNA_def_property_update(prop, NC_NODE | NA_EDITED, "rna_NodeSocketInterface_update");
 
-	func = RNA_def_function(srna, "new", "rna_NodeTree_node_composite_new");
-	RNA_def_function_ui_description(func, "Add a node to this node tree");
-	RNA_def_function_flag(func, FUNC_USE_CONTEXT | FUNC_USE_REPORTS);
-	parm = RNA_def_enum(func, "type", compositor_node_type_items, 0, "Type", "Type of node to add");
+	prop = RNA_def_property(srna, "identifier", PROP_STRING, PROP_NONE);
+	RNA_def_property_string_sdna(prop, NULL, "identifier");
+	RNA_def_property_clear_flag(prop, PROP_EDITABLE);
+	RNA_def_property_ui_text(prop, "Identifier", "Unique identifier for mapping sockets");
+
+	prop = RNA_def_property(srna, "in_out", PROP_ENUM, PROP_NONE);
+	RNA_def_property_enum_sdna(prop, NULL, "in_out");
+	RNA_def_property_enum_items(prop, node_socket_in_out_items);
+	RNA_def_property_enum_default(prop, SOCK_IN);
+	RNA_def_property_clear_flag(prop, PROP_EDITABLE);
+	RNA_def_property_ui_text(prop, "Input or Output", "Input or Output type");
+
+	/* registration */
+	prop = RNA_def_property(srna, "bl_socket_idname", PROP_STRING, PROP_NONE);
+	RNA_def_property_string_sdna(prop, NULL, "typeinfo->idname");
+	RNA_def_property_string_funcs(prop, "rna_NodeSocket_bl_idname_get", "rna_NodeSocket_bl_idname_length", NULL);
+	RNA_def_property_flag(prop, PROP_REGISTER | PROP_NEVER_CLAMP);
+	RNA_def_property_ui_text(prop, "ID Name", "");
+
+	func = RNA_def_function(srna, "draw", NULL);
+	RNA_def_function_ui_description(func, "Draw template settings");
+	RNA_def_function_flag(func, FUNC_REGISTER_OPTIONAL);
+	parm = RNA_def_pointer(func, "context", "Context", "", "");
+	RNA_def_property_flag(parm, PROP_REQUIRED | PROP_NEVER_NULL);
+	parm = RNA_def_property(func, "layout", PROP_POINTER, PROP_NONE);
+	RNA_def_property_struct_type(parm, "UILayout");
+	RNA_def_property_ui_text(parm, "Layout", "Layout in the UI");
+	RNA_def_property_flag(parm, PROP_REQUIRED | PROP_NEVER_NULL);
+
+	func = RNA_def_function(srna, "draw_color", NULL);
+	RNA_def_function_ui_description(func, "Color of the socket icon");
+	RNA_def_function_flag(func, FUNC_REGISTER);
+	parm = RNA_def_pointer(func, "context", "Context", "", "");
+	RNA_def_property_flag(parm, PROP_REQUIRED | PROP_NEVER_NULL);
+	parm = RNA_def_float_array(func, "color", 4, default_draw_color, 0.0f, 1.0f, "Color", "", 0.0f, 1.0f);
+	RNA_def_function_output(func, parm);
+
+	func = RNA_def_function(srna, "register_properties", NULL);
+	RNA_def_function_ui_description(func, "Define RNA properties of a socket");
+	RNA_def_function_flag(func, FUNC_REGISTER_OPTIONAL | FUNC_ALLOW_WRITE);
+	parm = RNA_def_pointer(func, "data_rna_type", "Struct", "Data RNA Type", "RNA type for special socket properties");
 	RNA_def_property_flag(parm, PROP_REQUIRED);
-	RNA_def_pointer(func, "group", "NodeTree", "", "The group tree");
-	/* return value */
-	parm = RNA_def_pointer(func, "node", "Node", "", "New node");
-	RNA_def_function_return(func, parm);
 
-	func = RNA_def_function(srna, "remove", "rna_NodeTree_node_remove");
-	RNA_def_function_ui_description(func, "Remove a node from this node tree");
-	RNA_def_function_flag(func, FUNC_USE_REPORTS);
-	parm = RNA_def_pointer(func, "node", "Node", "", "The node to remove");
+	func = RNA_def_function(srna, "init_socket", NULL);
+	RNA_def_function_ui_description(func, "Initialize a node socket instance");
+	RNA_def_function_flag(func, FUNC_REGISTER_OPTIONAL | FUNC_ALLOW_WRITE);
+	parm = RNA_def_pointer(func, "node", "Node", "Node", "Node of the socket to initialize");
 	RNA_def_property_flag(parm, PROP_REQUIRED | PROP_NEVER_NULL | PROP_RNAPTR);
-	RNA_def_property_clear_flag(parm, PROP_THICK_WRAP);
+	parm = RNA_def_pointer(func, "socket", "NodeSocket", "Socket", "Socket to initialize");
+	RNA_def_property_flag(parm, PROP_REQUIRED | PROP_NEVER_NULL | PROP_RNAPTR);
+	parm = RNA_def_string(func, "data_path", "", 0, "Data Path", "Path to specialized socket data");
+	RNA_def_property_flag(parm, PROP_REQUIRED);
 
-	func = RNA_def_function(srna, "clear", "rna_NodeTree_node_clear");
-	RNA_def_function_ui_description(func, "Remove all nodes from this node tree");
+	func = RNA_def_function(srna, "from_socket", NULL);
+	RNA_def_function_ui_description(func, "Setup template parameters from an existing socket");
+	RNA_def_function_flag(func, FUNC_REGISTER_OPTIONAL | FUNC_ALLOW_WRITE);
+	parm = RNA_def_pointer(func, "node", "Node", "Node", "Node of the original socket");
+	RNA_def_property_flag(parm, PROP_REQUIRED | PROP_NEVER_NULL | PROP_RNAPTR);
+	parm = RNA_def_pointer(func, "socket", "NodeSocket", "Socket", "Original socket");
+	RNA_def_property_flag(parm, PROP_REQUIRED | PROP_NEVER_NULL | PROP_RNAPTR);
+}
 
-	rna_def_nodetree_active_api(srna, cprop);
+static void rna_def_node_socket_float(BlenderRNA *brna, const char *idname, const char *interface_idname, PropertySubType subtype)
+{
+	StructRNA *srna;
+	PropertyRNA *prop;
+	
+	srna = RNA_def_struct(brna, idname, "NodeSocketStandard");
+	RNA_def_struct_ui_text(srna, "Float Node Socket", "Floating point number socket of a node");
+	RNA_def_struct_sdna(srna, "bNodeSocket");
+	
+	RNA_def_struct_sdna_from(srna, "bNodeSocketValueFloat", "default_value");
+	
+	prop = RNA_def_property(srna, "default_value", PROP_FLOAT, subtype);
+	RNA_def_property_float_sdna(prop, NULL, "value");
+	RNA_def_property_float_funcs(prop, NULL, NULL, "rna_NodeSocketStandard_float_range");
+	RNA_def_property_ui_text(prop, "Default Value", "Input value used for unconnected socket");
+	RNA_def_property_update(prop, NC_NODE | NA_EDITED, "rna_NodeSocketStandard_value_update");
+	RNA_def_property_flag(prop, PROP_CONTEXT_UPDATE);
+	
+	/* XXX need to reset the from-type here, so subtype subclasses cast correctly! (RNA bug) */
+	RNA_def_struct_sdna_from(srna, "bNodeSocket", NULL);
+	
+	/* socket interface */
+	srna = RNA_def_struct(brna, interface_idname, "NodeSocketInterfaceStandard");
+	RNA_def_struct_ui_text(srna, "Float Node Socket Interface", "Floating point number socket of a node");
+	RNA_def_struct_sdna(srna, "bNodeSocket");
 }
 
-static void rna_def_shader_nodetree_api(BlenderRNA *brna, PropertyRNA *cprop)
+static void rna_def_node_socket_int(BlenderRNA *brna, const char *identifier, const char *interface_idname, PropertySubType subtype)
 {
 	StructRNA *srna;
-	PropertyRNA *parm;
-	FunctionRNA *func;
+	PropertyRNA *prop;
+	
+	srna = RNA_def_struct(brna, identifier, "NodeSocketStandard");
+	RNA_def_struct_ui_text(srna, "Integer Node Socket", "Integer number socket of a node");
+	RNA_def_struct_sdna(srna, "bNodeSocket");
+	
+	RNA_def_struct_sdna_from(srna, "bNodeSocketValueInt", "default_value");
+	
+	prop = RNA_def_property(srna, "default_value", PROP_INT, subtype);
+	RNA_def_property_int_sdna(prop, NULL, "value");
+	RNA_def_property_int_funcs(prop, NULL, NULL, "rna_NodeSocketStandard_int_range");
+	RNA_def_property_ui_text(prop, "Default Value", "Input value used for unconnected socket");
+	RNA_def_property_update(prop, NC_NODE | NA_EDITED, "rna_NodeSocketStandard_value_update");
+	RNA_def_property_flag(prop, PROP_CONTEXT_UPDATE);
+	
+	/* XXX need to reset the from-type here, so subtype subclasses cast correctly! (RNA bug) */
+	RNA_def_struct_sdna_from(srna, "bNodeSocket", NULL);
+	
+	/* socket interface */
+	srna = RNA_def_struct(brna, interface_idname, "NodeSocketInterfaceStandard");
+	RNA_def_struct_ui_text(srna, "Integer Node Socket Interface", "Integer number socket of a node");
+	RNA_def_struct_sdna(srna, "bNodeSocket");
+}
 
-	RNA_def_property_srna(cprop, "ShaderNodes");
-	srna = RNA_def_struct(brna, "ShaderNodes", NULL);
-	RNA_def_struct_sdna(srna, "bNodeTree");
-	RNA_def_struct_ui_text(srna, "Shader Nodes", "Collection of Shader Nodes");
+static void rna_def_node_socket_bool(BlenderRNA *brna, const char *identifier, const char *interface_idname)
+{
+	StructRNA *srna;
+	PropertyRNA *prop;
+	
+	srna = RNA_def_struct(brna, identifier, "NodeSocketStandard");
+	RNA_def_struct_ui_text(srna, "Boolean Node Socket", "Boolean value socket of a node");
+	RNA_def_struct_sdna(srna, "bNodeSocket");
+	
+	RNA_def_struct_sdna_from(srna, "bNodeSocketValueBoolean", "default_value");
+	
+	prop = RNA_def_property(srna, "default_value", PROP_BOOLEAN, PROP_NONE);
+	RNA_def_property_boolean_sdna(prop, NULL, "value", 1);
+	RNA_def_property_ui_text(prop, "Default Value", "Input value used for unconnected socket");
+	RNA_def_property_update(prop, NC_NODE | NA_EDITED, "rna_NodeSocketStandard_value_update");
+	RNA_def_property_flag(prop, PROP_CONTEXT_UPDATE);
+	
+	/* XXX need to reset the from-type here, so subtype subclasses cast correctly! (RNA bug) */
+	RNA_def_struct_sdna_from(srna, "bNodeSocket", NULL);
+	
+	/* socket interface */
+	srna = RNA_def_struct(brna, interface_idname, "NodeSocketInterfaceStandard");
+	RNA_def_struct_ui_text(srna, "Boolean Node Socket Interface", "Boolean value socket of a node");
+	RNA_def_struct_sdna(srna, "bNodeSocket");
+}
 
-	func = RNA_def_function(srna, "new", "rna_NodeTree_node_new");
-	RNA_def_function_ui_description(func, "Add a node to this node tree");
-	RNA_def_function_flag(func, FUNC_USE_CONTEXT | FUNC_USE_REPORTS);
-	parm = RNA_def_enum(func, "type", shader_node_type_items, 0, "Type", "Type of node to add");
-	RNA_def_property_flag(parm, PROP_REQUIRED);
-	RNA_def_pointer(func, "group", "NodeTree", "", "The group tree");
-	/* return value */
-	parm = RNA_def_pointer(func, "node", "Node", "", "New node");
-	RNA_def_function_return(func, parm);
+static void rna_def_node_socket_vector(BlenderRNA *brna, const char *identifier, const char *interface_idname, PropertySubType subtype)
+{
+	StructRNA *srna;
+	PropertyRNA *prop;
+	
+	srna = RNA_def_struct(brna, identifier, "NodeSocketStandard");
+	RNA_def_struct_ui_text(srna, "Vector Node Socket", "3D vector socket of a node");
+	RNA_def_struct_sdna(srna, "bNodeSocket");
+	
+	RNA_def_struct_sdna_from(srna, "bNodeSocketValueVector", "default_value");
+	
+	prop = RNA_def_property(srna, "default_value", PROP_FLOAT, subtype);
+	RNA_def_property_float_sdna(prop, NULL, "value");
+	RNA_def_property_float_funcs(prop, NULL, NULL, "rna_NodeSocketStandard_vector_range");
+	RNA_def_property_ui_text(prop, "Default Value", "Input value used for unconnected socket");
+	RNA_def_property_update(prop, NC_NODE | NA_EDITED, "rna_NodeSocketStandard_value_update");
+	RNA_def_property_flag(prop, PROP_CONTEXT_UPDATE);
+	
+	/* XXX need to reset the from-type here, so subtype subclasses cast correctly! (RNA bug) */
+	RNA_def_struct_sdna_from(srna, "bNodeSocket", NULL);
+	
+	/* socket interface */
+	srna = RNA_def_struct(brna, interface_idname, "NodeSocketInterfaceStandard");
+	RNA_def_struct_ui_text(srna, "Vector Node Socket Interface", "3D vector socket of a node");
+	RNA_def_struct_sdna(srna, "bNodeSocket");
+}
 
-	func = RNA_def_function(srna, "remove", "rna_NodeTree_node_remove");
-	RNA_def_function_ui_description(func, "Remove a node from this node tree");
-	RNA_def_function_flag(func, FUNC_USE_REPORTS);
-	parm = RNA_def_pointer(func, "node", "Node", "", "The node to remove");
-	RNA_def_property_flag(parm, PROP_REQUIRED | PROP_NEVER_NULL | PROP_RNAPTR);
-	RNA_def_property_clear_flag(parm, PROP_THICK_WRAP);
+static void rna_def_node_socket_color(BlenderRNA *brna, const char *identifier, const char *interface_idname)
+{
+	StructRNA *srna;
+	PropertyRNA *prop;
+	
+	srna = RNA_def_struct(brna, identifier, "NodeSocketStandard");
+	RNA_def_struct_ui_text(srna, "Color Node Socket", "RGBA color socket of a node");
+	RNA_def_struct_sdna(srna, "bNodeSocket");
+	
+	RNA_def_struct_sdna_from(srna, "bNodeSocketValueRGBA", "default_value");
+	
+	prop = RNA_def_property(srna, "default_value", PROP_FLOAT, PROP_COLOR);
+	RNA_def_property_float_sdna(prop, NULL, "value");
+	RNA_def_property_ui_text(prop, "Default Value", "Input value used for unconnected socket");
+	RNA_def_property_update(prop, NC_NODE | NA_EDITED, "rna_NodeSocketStandard_value_update");
+	RNA_def_property_flag(prop, PROP_CONTEXT_UPDATE);
+	
+	/* XXX need to reset the from-type here, so subtype subclasses cast correctly! (RNA bug) */
+	RNA_def_struct_sdna_from(srna, "bNodeSocket", NULL);
+	
+	/* socket interface */
+	srna = RNA_def_struct(brna, interface_idname, "NodeSocketInterfaceStandard");
+	RNA_def_struct_ui_text(srna, "Color Node Socket Interface", "RGBA color socket of a node");
+	RNA_def_struct_sdna(srna, "bNodeSocket");
+}
 
-	func = RNA_def_function(srna, "clear", "rna_NodeTree_node_clear");
-	RNA_def_function_ui_description(func, "Remove all nodes from this node tree");
+static void rna_def_node_socket_string(BlenderRNA *brna, const char *identifier, const char *interface_idname)
+{
+	StructRNA *srna;
+	PropertyRNA *prop;
+	
+	srna = RNA_def_struct(brna, identifier, "NodeSocketStandard");
+	RNA_def_struct_ui_text(srna, "String Node Socket", "String socket of a node");
+	RNA_def_struct_sdna(srna, "bNodeSocket");
+	
+	RNA_def_struct_sdna_from(srna, "bNodeSocketValueString", "default_value");
+	
+	prop = RNA_def_property(srna, "default_value", PROP_STRING, PROP_NONE);
+	RNA_def_property_string_sdna(prop, NULL, "value");
+	RNA_def_property_ui_text(prop, "Default Value", "Input value used for unconnected socket");
+	RNA_def_property_update(prop, NC_NODE | NA_EDITED, "rna_NodeSocketStandard_value_update");
+	RNA_def_property_flag(prop, PROP_CONTEXT_UPDATE);
+	
+	/* XXX need to reset the from-type here, so subtype subclasses cast correctly! (RNA bug) */
+	RNA_def_struct_sdna_from(srna, "bNodeSocket", NULL);
+	
+	/* socket interface */
+	srna = RNA_def_struct(brna, interface_idname, "NodeSocketInterfaceStandard");
+	RNA_def_struct_ui_text(srna, "String Node Socket Interface", "String socket of a node");
+	RNA_def_struct_sdna(srna, "bNodeSocket");
+}
 
-	rna_def_nodetree_active_api(srna, cprop);
+static void rna_def_node_socket_shader(BlenderRNA *brna, const char *identifier, const char *interface_idname)
+{
+	StructRNA *srna;
+	
+	srna = RNA_def_struct(brna, identifier, "NodeSocketStandard");
+	RNA_def_struct_ui_text(srna, "Shader Node Socket", "Shader socket of a node");
+	RNA_def_struct_sdna(srna, "bNodeSocket");
+	
+	/* socket interface */
+	srna = RNA_def_struct(brna, interface_idname, "NodeSocketInterfaceStandard");
+	RNA_def_struct_ui_text(srna, "Shader Node Socket Interface", "Shader socket of a node");
+	RNA_def_struct_sdna(srna, "bNodeSocket");
+}
+
+static void rna_def_node_socket_virtual(BlenderRNA *brna, const char *identifier)
+{
+	StructRNA *srna;
+	
+	srna = RNA_def_struct(brna, identifier, "NodeSocketStandard");
+	RNA_def_struct_ui_text(srna, "Virtual Node Socket", "Virtual socket of a node");
+	RNA_def_struct_sdna(srna, "bNodeSocket");
 }
 
-static void rna_def_texture_nodetree_api(BlenderRNA *brna, PropertyRNA *cprop)
+static void rna_def_node_socket_standard_types(BlenderRNA *brna)
 {
+	/* XXX Workaround: Registered functions are not exposed in python by bpy,
+	 * it expects them to be registered from python and use the native implementation.
+	 * However, the standard socket types below are not registering these functions from python,
+	 * so in order to call them in py scripts we need to overload and replace them with plain C callbacks.
+	 * These types provide a usable basis for socket types defined in C.
+	 */
+	
 	StructRNA *srna;
 	PropertyRNA *parm;
 	FunctionRNA *func;
+	
+	static float default_draw_color[] = { 0.0f, 0.0f, 0.0f, 1.0f };
+	
+	srna = RNA_def_struct(brna, "NodeSocketStandard", "NodeSocket");
+	RNA_def_struct_sdna(srna, "bNodeSocket");
+	
+	/* draw socket */
+	func = RNA_def_function(srna, "draw", "rna_NodeSocketStandard_draw");
+	RNA_def_function_flag(func, FUNC_USE_SELF_ID);
+	RNA_def_function_ui_description(func, "Draw socket");
+	parm = RNA_def_pointer(func, "context", "Context", "", "");
+	RNA_def_property_flag(parm, PROP_REQUIRED | PROP_NEVER_NULL);
+	parm = RNA_def_property(func, "layout", PROP_POINTER, PROP_NONE);
+	RNA_def_property_struct_type(parm, "UILayout");
+	RNA_def_property_ui_text(parm, "Layout", "Layout in the UI");
+	RNA_def_property_flag(parm, PROP_REQUIRED | PROP_NEVER_NULL);
+	parm = RNA_def_property(func, "node", PROP_POINTER, PROP_NONE);
+	RNA_def_property_struct_type(parm, "Node");
+	RNA_def_property_ui_text(parm, "Node", "Node the socket belongs to");
+	RNA_def_property_flag(parm, PROP_REQUIRED | PROP_NEVER_NULL | PROP_RNAPTR);
 
-	RNA_def_property_srna(cprop, "TextureNodes");
-	srna = RNA_def_struct(brna, "TextureNodes", NULL);
-	RNA_def_struct_sdna(srna, "bNodeTree");
-	RNA_def_struct_ui_text(srna, "Texture Nodes", "Collection of Texture Nodes");
-
-	func = RNA_def_function(srna, "new", "rna_NodeTree_node_texture_new");
-	RNA_def_function_ui_description(func, "Add a node to this node tree");
-	RNA_def_function_flag(func, FUNC_USE_CONTEXT | FUNC_USE_REPORTS);
-	parm = RNA_def_enum(func, "type", texture_node_type_items, 0, "Type", "Type of node to add");
-	RNA_def_property_flag(parm, PROP_REQUIRED);
-	RNA_def_pointer(func, "group", "NodeTree", "", "The group tree");
-	/* return value */
-	parm = RNA_def_pointer(func, "node", "Node", "", "New node");
-	RNA_def_function_return(func, parm);
-
-	func = RNA_def_function(srna, "remove", "rna_NodeTree_node_remove");
-	RNA_def_function_ui_description(func, "Remove a node from this node tree");
-	RNA_def_function_flag(func, FUNC_USE_REPORTS);
-	parm = RNA_def_pointer(func, "node", "Node", "", "The node to remove");
+	func = RNA_def_function(srna, "draw_color", "rna_NodeSocketStandard_draw_color");
+	RNA_def_function_flag(func, FUNC_USE_SELF_ID);
+	RNA_def_function_ui_description(func, "Color of the socket icon");
+	parm = RNA_def_pointer(func, "context", "Context", "", "");
+	RNA_def_property_flag(parm, PROP_REQUIRED | PROP_NEVER_NULL);
+	parm = RNA_def_property(func, "node", PROP_POINTER, PROP_NONE);
+	RNA_def_property_struct_type(parm, "Node");
+	RNA_def_property_ui_text(parm, "Node", "Node the socket belongs to");
 	RNA_def_property_flag(parm, PROP_REQUIRED | PROP_NEVER_NULL | PROP_RNAPTR);
-	RNA_def_property_clear_flag(parm, PROP_THICK_WRAP);
+	parm = RNA_def_float_array(func, "color", 4, default_draw_color, 0.0f, 1.0f, "Color", "", 0.0f, 1.0f);
+	RNA_def_function_output(func, parm);
+	
+	
+	srna = RNA_def_struct(brna, "NodeSocketInterfaceStandard", "NodeSocketInterface");
+	RNA_def_struct_sdna(srna, "bNodeSocket");
+	
+	func = RNA_def_function(srna, "draw", "rna_NodeSocketInterfaceStandard_draw");
+	RNA_def_function_flag(func, FUNC_USE_SELF_ID);
+	RNA_def_function_ui_description(func, "Draw template settings");
+	parm = RNA_def_pointer(func, "context", "Context", "", "");
+	RNA_def_property_flag(parm, PROP_REQUIRED | PROP_NEVER_NULL);
+	parm = RNA_def_property(func, "layout", PROP_POINTER, PROP_NONE);
+	RNA_def_property_struct_type(parm, "UILayout");
+	RNA_def_property_ui_text(parm, "Layout", "Layout in the UI");
+	RNA_def_property_flag(parm, PROP_REQUIRED | PROP_NEVER_NULL);
 
-	func = RNA_def_function(srna, "clear", "rna_NodeTree_node_clear");
-	RNA_def_function_ui_description(func, "Remove all nodes from this node tree");
+	func = RNA_def_function(srna, "draw_color", "rna_NodeSocketInterfaceStandard_draw_color");
+	RNA_def_function_flag(func, FUNC_USE_SELF_ID);
+	RNA_def_function_ui_description(func, "Color of the socket icon");
+	parm = RNA_def_pointer(func, "context", "Context", "", "");
+	RNA_def_property_flag(parm, PROP_REQUIRED | PROP_NEVER_NULL);
+	parm = RNA_def_float_array(func, "color", 4, default_draw_color, 0.0f, 1.0f, "Color", "", 0.0f, 1.0f);
+	RNA_def_function_output(func, parm);
 
-	rna_def_nodetree_active_api(srna, cprop);
-}
 
-static void rna_def_node_socket(BlenderRNA *brna)
-{
-	StructRNA *srna;
-	PropertyRNA *prop;
+	/* XXX These types should eventually be registered at runtime.
+	 * Then use the nodeStaticSocketType and nodeStaticSocketInterfaceType functions
+	 * to get the idname strings from int type and subtype (see node_socket.c, register_standard_node_socket_types).
+	 */
+	
+	rna_def_node_socket_float(brna, "NodeSocketFloat", "NodeSocketInterfaceFloat", PROP_NONE);
+	rna_def_node_socket_float(brna, "NodeSocketFloatUnsigned", "NodeSocketInterfaceFloatUnsigned", PROP_UNSIGNED);
+	rna_def_node_socket_float(brna, "NodeSocketFloatPercentage", "NodeSocketInterfaceFloatPercentage", PROP_PERCENTAGE);
+	rna_def_node_socket_float(brna, "NodeSocketFloatFactor", "NodeSocketInterfaceFloatFactor", PROP_FACTOR);
+	rna_def_node_socket_float(brna, "NodeSocketFloatAngle", "NodeSocketInterfaceFloatAngle", PROP_ANGLE);
+	rna_def_node_socket_float(brna, "NodeSocketFloatTime", "NodeSocketInterfaceFloatTime", PROP_TIME);
 
-	srna = RNA_def_struct(brna, "NodeSocket", NULL);
-	RNA_def_struct_ui_text(srna, "Node Socket", "Input or output socket of a node");
-	RNA_def_struct_sdna(srna, "bNodeSocket");
-	RNA_def_struct_refine_func(srna, "rna_NodeSocket_refine");
-	RNA_def_struct_ui_icon(srna, ICON_PLUG);
-	RNA_def_struct_path_func(srna, "rna_NodeSocket_path");
+	rna_def_node_socket_int(brna, "NodeSocketInt", "NodeSocketInterfaceInt", PROP_NONE);
+	rna_def_node_socket_int(brna, "NodeSocketIntUnsigned", "NodeSocketInterfaceIntUnsigned", PROP_UNSIGNED);
+	rna_def_node_socket_int(brna, "NodeSocketIntPercentage", "NodeSocketInterfaceIntPercentage", PROP_PERCENTAGE);
+	rna_def_node_socket_int(brna, "NodeSocketIntFactor", "NodeSocketInterfaceIntFactor", PROP_FACTOR);
 
-	prop = RNA_def_property(srna, "type", PROP_ENUM, PROP_NONE);
-	RNA_def_property_enum_sdna(prop, NULL, "type");
-	RNA_def_property_enum_items(prop, node_socket_type_items);
-	RNA_def_property_enum_default(prop, 0);
-	RNA_def_property_clear_flag(prop, PROP_EDITABLE);
-	RNA_def_property_ui_text(prop, "Type", "Node Socket type");
+	rna_def_node_socket_bool(brna, "NodeSocketBool", "NodeSocketInterfaceBool");
 
-	prop = RNA_def_property(srna, "name", PROP_STRING, PROP_NONE);
-	/* XXX must be editable for group sockets. if necessary use a special rna definition for these */
-/*	RNA_def_property_clear_flag(prop, PROP_EDITABLE); */
-	RNA_def_property_ui_text(prop, "Name", "Socket name");
-	RNA_def_struct_name_property(srna, prop);
-	RNA_def_property_update(prop, NC_NODE | NA_EDITED, "rna_NodeGroupSocket_update");
+	rna_def_node_socket_vector(brna, "NodeSocketVector", "NodeSocketInterfaceVector", PROP_NONE);
+	rna_def_node_socket_vector(brna, "NodeSocketVectorTranslation", "NodeSocketInterfaceVectorTranslation", PROP_TRANSLATION);
+	rna_def_node_socket_vector(brna, "NodeSocketVectorDirection", "NodeSocketInterfaceVectorDirection", PROP_DIRECTION);
+	rna_def_node_socket_vector(brna, "NodeSocketVectorVelocity", "NodeSocketInterfaceVectorVelocity", PROP_VELOCITY);
+	rna_def_node_socket_vector(brna, "NodeSocketVectorAcceleration", "NodeSocketInterfaceVectorAcceleration", PROP_ACCELERATION);
+	rna_def_node_socket_vector(brna, "NodeSocketVectorEuler", "NodeSocketInterfaceVectorEuler", PROP_EULER);
+	rna_def_node_socket_vector(brna, "NodeSocketVectorXYZ", "NodeSocketInterfaceVectorXYZ", PROP_XYZ);
 
-	prop = RNA_def_property(srna, "group_socket", PROP_POINTER, PROP_NONE);
-	RNA_def_property_pointer_sdna(prop, NULL, "groupsock");
-	RNA_def_property_struct_type(prop, "NodeSocket");
-	RNA_def_property_ui_text(prop, "Group Socket",
-	                         "For group nodes, the group input or output socket this corresponds to");
+	rna_def_node_socket_color(brna, "NodeSocketColor", "NodeSocketInterfaceColor");
 
-	prop = RNA_def_property(srna, "hide", PROP_BOOLEAN, PROP_NONE);
-	RNA_def_property_boolean_sdna(prop, NULL, "flag", SOCK_HIDDEN);
-	RNA_def_property_boolean_funcs(prop, NULL, "rna_NodeSocket_hide_set");
-	RNA_def_property_ui_text(prop, "Hide", "Hide the socket");
-	RNA_def_property_update(prop, NC_NODE | ND_DISPLAY, NULL);
+	rna_def_node_socket_string(brna, "NodeSocketString", "NodeSocketInterfaceString");
 
-	prop = RNA_def_property(srna, "is_linked", PROP_BOOLEAN, PROP_NONE);
-	RNA_def_property_boolean_sdna(prop, NULL, "flag", SOCK_IN_USE);
-	RNA_def_property_clear_flag(prop, PROP_EDITABLE);
-	RNA_def_property_ui_text(prop, "Linked", "True if the socket is connected");
+	rna_def_node_socket_shader(brna, "NodeSocketShader", "NodeSocketInterfaceShader");
 
-	prop = RNA_def_property(srna, "show_expanded", PROP_BOOLEAN, PROP_NONE);
-	RNA_def_property_boolean_negative_sdna(prop, NULL, "flag", SOCK_COLLAPSED);
-	RNA_def_property_ui_text(prop, "Expanded", "Socket links are expanded in the user interface");
-	RNA_def_property_update(prop, NC_NODE | NA_EDITED, NULL);
+	rna_def_node_socket_virtual(brna, "NodeSocketVirtual");
 }
 
-static void rna_def_node_socket_subtype(BlenderRNA *brna, int type, int subtype, const char *name, const char *ui_name)
+static void rna_def_node_sockets_api(BlenderRNA *brna, PropertyRNA *cprop, int in_out)
 {
 	StructRNA *srna;
-	PropertyRNA *prop = NULL;
-	PropertySubType propsubtype = PROP_NONE;
-	
-	#define SUBTYPE(socktype, stypename, id, idname) { PROP_##id, #socktype "_" #id, 0, #idname, ""},
-	static EnumPropertyItem subtype_items[] = {
-		NODE_DEFINE_SUBTYPES
-		{0, NULL, 0, NULL, NULL}
-	};
-	#undef SUBTYPE
+	PropertyRNA *parm;
+	FunctionRNA *func;
+	const char *structtype = (in_out == SOCK_IN ? "NodeInputs" : "NodeOutputs");
+	const char *uiname =  (in_out == SOCK_IN ? "Node Inputs" : "Node Outputs");
+	const char *newfunc = (in_out == SOCK_IN ? "rna_Node_inputs_new" : "rna_Node_outputs_new");
+	const char *clearfunc = (in_out == SOCK_IN ? "rna_Node_inputs_clear" : "rna_Node_outputs_clear");
 
-	#define SUBTYPE(socktype, stypename, id, idname)    if (subtype == (PROP_##id)) propsubtype = PROP_##id;
-	NODE_DEFINE_SUBTYPES
-	#undef SUBTYPE
-	
-	srna = RNA_def_struct(brna, name, "NodeSocket");
-	RNA_def_struct_ui_text(srna, ui_name, "Input or output socket of a node");
-	RNA_def_struct_sdna(srna, "bNodeSocket");
-	RNA_def_struct_ui_icon(srna, ICON_PLUG);
-	RNA_def_struct_path_func(srna, "rna_NodeSocket_path");
-	
-	switch (type) {
-		case SOCK_INT:
-			RNA_def_struct_sdna_from(srna, "bNodeSocketValueInt", "default_value");
-
-			prop = RNA_def_property(srna, "subtype", PROP_ENUM, PROP_NONE);
-			RNA_def_property_enum_sdna(prop, NULL, "subtype");
-			RNA_def_property_enum_items(prop, subtype_items);
-			RNA_def_property_ui_text(prop, "Subtype", "Subtype defining the socket value details");
-			RNA_def_property_update(prop, NC_NODE | NA_EDITED, "rna_NodeSocket_update");
-
-			prop = RNA_def_property(srna, "default_value", PROP_INT, propsubtype);
-			RNA_def_property_int_sdna(prop, NULL, "value");
-			RNA_def_property_int_funcs(prop, NULL, NULL, "rna_NodeSocketInt_range");
-			RNA_def_property_ui_text(prop, "Default Value", "");
-			RNA_def_property_update(prop, NC_NODE | NA_EDITED, "rna_NodeSocket_update");
-			break;
-		case SOCK_FLOAT:
-			RNA_def_struct_sdna_from(srna, "bNodeSocketValueFloat", "default_value");
-
-			prop = RNA_def_property(srna, "subtype", PROP_ENUM, PROP_NONE);
-			RNA_def_property_enum_sdna(prop, NULL, "subtype");
-			RNA_def_property_enum_items(prop, subtype_items);
-			RNA_def_property_ui_text(prop, "Subtype", "Subtype defining the socket value details");
-			RNA_def_property_update(prop, NC_NODE | NA_EDITED, "rna_NodeSocket_update");
-
-			prop = RNA_def_property(srna, "default_value", PROP_FLOAT, propsubtype);
-			RNA_def_property_float_sdna(prop, NULL, "value");
-			RNA_def_property_float_funcs(prop, NULL, NULL, "rna_NodeSocketFloat_range");
-			RNA_def_property_ui_text(prop, "Default Value", "");
-			RNA_def_property_update(prop, NC_NODE | NA_EDITED, "rna_NodeSocket_update");
-			break;
-		case SOCK_BOOLEAN:
-			RNA_def_struct_sdna_from(srna, "bNodeSocketValueBoolean", "default_value");
-		
-			prop = RNA_def_property(srna, "default_value", PROP_BOOLEAN, PROP_NONE);
-			RNA_def_property_boolean_sdna(prop, NULL, "value", 1);
-			RNA_def_property_ui_text(prop, "Default Value", "");
-			RNA_def_property_update(prop, NC_NODE | NA_EDITED, "rna_NodeSocket_update");
-			break;
-		case SOCK_VECTOR:
-			RNA_def_struct_sdna_from(srna, "bNodeSocketValueVector", "default_value");
-
-			prop = RNA_def_property(srna, "subtype", PROP_ENUM, PROP_NONE);
-			RNA_def_property_enum_sdna(prop, NULL, "subtype");
-			RNA_def_property_enum_items(prop, subtype_items);
-			RNA_def_property_ui_text(prop, "Subtype", "Subtype defining the socket value details");
-			RNA_def_property_update(prop, NC_NODE | NA_EDITED, "rna_NodeSocket_update");
-
-			prop = RNA_def_property(srna, "default_value", PROP_FLOAT, propsubtype);
-			RNA_def_property_float_sdna(prop, NULL, "value");
-			RNA_def_property_float_funcs(prop, NULL, NULL, "rna_NodeSocketVector_range");
-			RNA_def_property_ui_text(prop, "Default Value", "");
-			RNA_def_property_update(prop, NC_NODE | NA_EDITED, "rna_NodeSocket_update");
-			break;
-		case SOCK_RGBA:
-			RNA_def_struct_sdna_from(srna, "bNodeSocketValueRGBA", "default_value");
+	RNA_def_property_srna(cprop, structtype);
+	srna = RNA_def_struct(brna, structtype, NULL);
+	RNA_def_struct_sdna(srna, "bNode");
+	RNA_def_struct_ui_text(srna, uiname, "Collection of Node Sockets");
 
-			prop = RNA_def_property(srna, "default_value", PROP_FLOAT, PROP_COLOR);
-			RNA_def_property_float_sdna(prop, NULL, "value");
-			RNA_def_property_ui_text(prop, "Default Value", "");
-			RNA_def_property_update(prop, NC_NODE | NA_EDITED, "rna_NodeSocket_update");
-			break;
-		case SOCK_STRING:
-			RNA_def_struct_sdna_from(srna, "bNodeSocketValueString", "default_value");
-
-			prop = RNA_def_property(srna, "subtype", PROP_ENUM, PROP_NONE);
-			RNA_def_property_enum_sdna(prop, NULL, "subtype");
-			RNA_def_property_enum_items(prop, subtype_items);
-			RNA_def_property_ui_text(prop, "Subtype", "Subtype defining the socket value details");
-			RNA_def_property_update(prop, NC_NODE | NA_EDITED, "rna_NodeSocket_update");
-			
-			prop = RNA_def_property(srna, "default_value", PROP_STRING, PROP_FILEPATH);
-			RNA_def_property_string_sdna(prop, NULL, "value");
-			RNA_def_property_ui_text(prop, "Default Value", "");
-			RNA_def_property_update(prop, NC_NODE | NA_EDITED, "rna_NodeSocket_update");
-			break;
-	}
-	
-	/* XXX need to reset the from-type here, so subtype subclasses cast correctly! (RNA bug) */
-	RNA_def_struct_sdna_from(srna, "bNodeSocket", NULL);
+	func = RNA_def_function(srna, "new", newfunc);
+	RNA_def_function_ui_description(func, "Add a socket to this node");
+	RNA_def_function_flag(func, FUNC_USE_SELF_ID | FUNC_USE_REPORTS);
+	parm = RNA_def_string(func, "type", "", MAX_NAME, "Type", "Data type");
+	RNA_def_property_flag(parm, PROP_REQUIRED);
+	parm = RNA_def_string(func, "name", "", MAX_NAME, "Name", "");
+	RNA_def_property_flag(parm, PROP_REQUIRED);
+	RNA_def_string(func, "identifier", "", MAX_NAME, "Identifier", "Unique socket identifier");
+	/* return value */
+	parm = RNA_def_pointer(func, "socket", "NodeSocket", "", "New socket");
+	RNA_def_function_return(func, parm);
+
+	func = RNA_def_function(srna, "remove", "rna_Node_socket_remove");
+	RNA_def_function_ui_description(func, "Remove a socket from this node");
+	RNA_def_function_flag(func, FUNC_USE_SELF_ID | FUNC_USE_REPORTS);
+	parm = RNA_def_pointer(func, "socket", "NodeSocket", "", "The socket to remove");
+	RNA_def_property_flag(parm, PROP_REQUIRED);
+
+	func = RNA_def_function(srna, "clear", clearfunc);
+	RNA_def_function_ui_description(func, "Remove all sockets from this node");
+	RNA_def_function_flag(func, FUNC_USE_SELF_ID | FUNC_USE_REPORTS);
 }
 
 static void rna_def_node(BlenderRNA *brna)
 {
 	StructRNA *srna;
 	PropertyRNA *prop;
+	FunctionRNA *func;
+	PropertyRNA *parm;
+	
+	static EnumPropertyItem dummy_static_type_items[] = {
+		{NODE_CUSTOM, "CUSTOM", 0, "Custom", "Custom Node"},
+		{0, NULL, 0, NULL, NULL}};
 	
 	srna = RNA_def_struct(brna, "Node", NULL);
 	RNA_def_struct_ui_text(srna, "Node", "Node in a node tree");
@@ -4773,6 +6396,16 @@ static void rna_def_node(BlenderRNA *brna)
 	RNA_def_struct_ui_icon(srna, ICON_NODE);
 	RNA_def_struct_refine_func(srna, "rna_Node_refine");
 	RNA_def_struct_path_func(srna, "rna_Node_path");
+	RNA_def_struct_register_funcs(srna, "rna_Node_register", "rna_Node_unregister", NULL);
+	RNA_def_struct_idprops_func(srna, "rna_Node_idprops");
+	
+	prop = RNA_def_property(srna, "type", PROP_ENUM, PROP_NONE);
+	RNA_def_property_enum_sdna(prop, NULL, "type");
+	RNA_def_property_enum_items(prop, dummy_static_type_items);
+	RNA_def_property_enum_funcs(prop, NULL, NULL, "rna_node_static_type_itemf");
+	RNA_def_property_enum_default(prop, NODE_CUSTOM);
+	RNA_def_property_clear_flag(prop, PROP_EDITABLE);
+	RNA_def_property_ui_text(prop, "Type", "Node type (deprecated, use bl_static_type or bl_idname for the actual identifier string)");
 	
 	prop = RNA_def_property(srna, "location", PROP_FLOAT, PROP_XYZ);
 	RNA_def_property_float_sdna(prop, NULL, "locx");
@@ -4812,13 +6445,24 @@ static void rna_def_node(BlenderRNA *brna)
 	
 	prop = RNA_def_property(srna, "inputs", PROP_COLLECTION, PROP_NONE);
 	RNA_def_property_collection_sdna(prop, NULL, "inputs", NULL);
+	RNA_def_property_collection_funcs(prop, NULL, NULL, NULL, NULL, NULL, NULL,
+	                                  "rna_Node_inputs_lookupstring", NULL);
 	RNA_def_property_struct_type(prop, "NodeSocket");
 	RNA_def_property_ui_text(prop, "Inputs", "");
+	rna_def_node_sockets_api(brna, prop, SOCK_IN);
 	
 	prop = RNA_def_property(srna, "outputs", PROP_COLLECTION, PROP_NONE);
 	RNA_def_property_collection_sdna(prop, NULL, "outputs", NULL);
+	RNA_def_property_collection_funcs(prop, NULL, NULL, NULL, NULL, NULL, NULL,
+	                                  "rna_Node_outputs_lookupstring", NULL);
 	RNA_def_property_struct_type(prop, "NodeSocket");
 	RNA_def_property_ui_text(prop, "Outputs", "");
+	rna_def_node_sockets_api(brna, prop, SOCK_OUT);
+
+	prop = RNA_def_property(srna, "internal_links", PROP_COLLECTION, PROP_NONE);
+	RNA_def_property_collection_sdna(prop, NULL, "internal_links", NULL);
+	RNA_def_property_struct_type(prop, "NodeLink");
+	RNA_def_property_ui_text(prop, "Internal Links", "Internal input-to-output connections for muting");
 
 	prop = RNA_def_property(srna, "parent", PROP_POINTER, PROP_NONE);
 	RNA_def_property_pointer_sdna(prop, NULL, "parent");
@@ -4840,8 +6484,9 @@ static void rna_def_node(BlenderRNA *brna)
 	RNA_def_property_update(prop, NC_NODE | ND_DISPLAY, NULL);
 
 	prop = RNA_def_property(srna, "select", PROP_BOOLEAN, PROP_NONE);
-	RNA_def_property_boolean_sdna(prop, NULL, "flag", NODE_SELECT);
-	RNA_def_property_ui_text(prop, "Select", "");
+	RNA_def_property_boolean_sdna(prop, NULL, "flag", SELECT);
+	RNA_def_property_boolean_funcs(prop, NULL, "rna_Node_select_set");
+	RNA_def_property_ui_text(prop, "Select", "Node selection state");
 	RNA_def_property_update(prop, NC_NODE | NA_SELECTED, NULL);
 
 	prop = RNA_def_property(srna, "show_options", PROP_BOOLEAN, PROP_NONE);
@@ -4868,6 +6513,115 @@ static void rna_def_node(BlenderRNA *brna)
 	RNA_def_property_boolean_sdna(prop, NULL, "flag", NODE_ACTIVE_TEXTURE);
 	RNA_def_property_ui_text(prop, "Show Texture", "Draw node in viewport textured draw mode");
 	RNA_def_property_update(prop, 0, "rna_Node_update");
+
+	/* generic property update function */
+	func = RNA_def_function(srna, "socket_value_update", "rna_Node_socket_value_update");
+	RNA_def_function_ui_description(func, "Update after property changes");
+	RNA_def_function_flag(func, FUNC_USE_SELF_ID);
+	parm = RNA_def_pointer(func, "context", "Context", "", "");
+	RNA_def_property_flag(parm, PROP_REQUIRED | PROP_NEVER_NULL);
+
+	func = RNA_def_function(srna, "is_registered_node_type", "rna_Node_is_registered_node_type");
+	RNA_def_function_ui_description(func, "True if a registered node type");
+	RNA_def_function_flag(func, FUNC_NO_SELF | FUNC_USE_SELF_TYPE);
+	parm = RNA_def_boolean(func, "result", FALSE, "Result", "");
+	RNA_def_function_return(func, parm);
+
+	/* registration */
+	prop = RNA_def_property(srna, "bl_idname", PROP_STRING, PROP_NONE);
+	RNA_def_property_string_sdna(prop, NULL, "typeinfo->idname");
+	RNA_def_property_string_funcs(prop, "rna_Node_bl_idname_get", "rna_Node_bl_idname_length", NULL);
+	RNA_def_property_flag(prop, PROP_REGISTER | PROP_NEVER_CLAMP);
+	RNA_def_property_ui_text(prop, "ID Name", "");
+
+	prop = RNA_def_property(srna, "bl_label", PROP_STRING, PROP_NONE);
+	RNA_def_property_string_sdna(prop, NULL, "typeinfo->ui_name");
+	RNA_def_property_string_funcs(prop, "rna_Node_bl_label_get", "rna_Node_bl_label_length", NULL);
+	RNA_def_property_flag(prop, PROP_REGISTER);
+	RNA_def_property_ui_text(prop, "Label", "The node label");
+
+	prop = RNA_def_property(srna, "bl_description", PROP_STRING, PROP_TRANSLATION);
+	RNA_def_property_string_sdna(prop, NULL, "typeinfo->ui_description");
+	RNA_def_property_string_funcs(prop, "rna_Node_bl_description_get", "rna_Node_bl_description_length", NULL);
+	RNA_def_property_flag(prop, PROP_REGISTER_OPTIONAL);
+	
+	prop = RNA_def_property(srna, "bl_icon", PROP_ENUM, PROP_NONE);
+	RNA_def_property_enum_sdna(prop, NULL, "typeinfo->ui_icon");
+	RNA_def_property_enum_funcs(prop, "rna_Node_bl_icon_get", NULL, NULL);
+	RNA_def_property_enum_items(prop, node_icon_items);
+	RNA_def_property_enum_default(prop, ICON_NODE);
+	RNA_def_property_flag(prop, PROP_REGISTER_OPTIONAL);
+	RNA_def_property_ui_text(prop, "Icon", "The node icon");
+
+	prop = RNA_def_property(srna, "bl_static_type", PROP_ENUM, PROP_NONE);
+	RNA_def_property_enum_sdna(prop, NULL, "typeinfo->type");
+	RNA_def_property_enum_funcs(prop, "rna_Node_bl_static_type_get", NULL, NULL);
+	RNA_def_property_enum_items(prop, dummy_static_type_items);
+	RNA_def_property_enum_funcs(prop, NULL, NULL, "rna_node_static_type_itemf");
+	RNA_def_property_enum_default(prop, NODE_CUSTOM);
+	RNA_def_property_flag(prop, PROP_REGISTER_OPTIONAL);
+	RNA_def_property_ui_text(prop, "Static Type", "Node type (deprecated, use with care)");
+
+	/* poll */
+	func = RNA_def_function(srna, "poll", NULL);
+	RNA_def_function_ui_description(func, "If non-null output is returned, the node type can be added to the tree");
+	RNA_def_function_flag(func, FUNC_NO_SELF | FUNC_REGISTER);
+	RNA_def_function_return(func, RNA_def_boolean(func, "visible", FALSE, "", ""));
+	parm = RNA_def_pointer(func, "node_tree", "NodeTree", "Node Tree", "");
+	RNA_def_property_flag(parm, PROP_REQUIRED);
+	
+	func = RNA_def_function(srna, "poll_instance", NULL);
+	RNA_def_function_ui_description(func, "If non-null output is returned, the node can be added to the tree");
+	RNA_def_function_flag(func, FUNC_REGISTER_OPTIONAL);
+	RNA_def_function_return(func, RNA_def_boolean(func, "visible", FALSE, "", ""));
+	parm = RNA_def_pointer(func, "node_tree", "NodeTree", "Node Tree", "");
+	RNA_def_property_flag(parm, PROP_REQUIRED);
+	
+	/* update */
+	func = RNA_def_function(srna, "update", NULL);
+	RNA_def_function_ui_description(func, "Update on editor changes");
+	RNA_def_function_flag(func, FUNC_USE_SELF_ID | FUNC_REGISTER_OPTIONAL | FUNC_ALLOW_WRITE);
+	
+	/* init */
+	func = RNA_def_function(srna, "init", NULL);
+	RNA_def_function_ui_description(func, "Initialize a new instance of this node");
+	RNA_def_function_flag(func, FUNC_REGISTER_OPTIONAL | FUNC_ALLOW_WRITE);
+	parm = RNA_def_pointer(func, "context", "Context", "", "");
+	RNA_def_property_flag(parm, PROP_REQUIRED | PROP_NEVER_NULL);
+
+	/* copy */
+	func = RNA_def_function(srna, "copy", NULL);
+	RNA_def_function_ui_description(func, "Initialize a new instance of this node from an existing node");
+	RNA_def_function_flag(func, FUNC_REGISTER_OPTIONAL | FUNC_ALLOW_WRITE);
+	parm = RNA_def_pointer(func, "node", "Node", "Node", "Existing node to copy");
+	RNA_def_property_flag(parm, PROP_REQUIRED | PROP_NEVER_NULL);
+
+	/* free */
+	func = RNA_def_function(srna, "free", NULL);
+	RNA_def_function_ui_description(func, "Clean up node on removal");
+	RNA_def_function_flag(func, FUNC_REGISTER_OPTIONAL | FUNC_ALLOW_WRITE);
+
+	/* draw buttons */
+	func = RNA_def_function(srna, "draw_buttons", NULL);
+	RNA_def_function_ui_description(func, "Draw node buttons");
+	RNA_def_function_flag(func, FUNC_REGISTER_OPTIONAL);
+	parm = RNA_def_pointer(func, "context", "Context", "", "");
+	RNA_def_property_flag(parm, PROP_REQUIRED | PROP_NEVER_NULL);
+	parm = RNA_def_property(func, "layout", PROP_POINTER, PROP_NONE);
+	RNA_def_property_struct_type(parm, "UILayout");
+	RNA_def_property_ui_text(parm, "Layout", "Layout in the UI");
+	RNA_def_property_flag(parm, PROP_REQUIRED | PROP_NEVER_NULL);
+
+	/* draw buttons extended */
+	func = RNA_def_function(srna, "draw_buttons_ext", NULL);
+	RNA_def_function_ui_description(func, "Draw node buttons in the sidebar");
+	RNA_def_function_flag(func, FUNC_REGISTER_OPTIONAL);
+	parm = RNA_def_pointer(func, "context", "Context", "", "");
+	RNA_def_property_flag(parm, PROP_REQUIRED | PROP_NEVER_NULL);
+	parm = RNA_def_property(func, "layout", PROP_POINTER, PROP_NONE);
+	RNA_def_property_struct_type(parm, "UILayout");
+	RNA_def_property_ui_text(parm, "Layout", "Layout in the UI");
+	RNA_def_property_flag(parm, PROP_REQUIRED | PROP_NEVER_NULL);
 }
 
 static void rna_def_node_link(BlenderRNA *brna)
@@ -4880,63 +6634,165 @@ static void rna_def_node_link(BlenderRNA *brna)
 	RNA_def_struct_sdna(srna, "bNodeLink");
 	RNA_def_struct_ui_icon(srna, ICON_NODE);
 
+	prop = RNA_def_property(srna, "is_valid", PROP_BOOLEAN, PROP_NONE);
+	RNA_def_property_boolean_sdna(prop, NULL, "flag", NODE_LINK_VALID);
+	RNA_def_struct_ui_text(srna, "Valid", "Link is valid");
+	RNA_def_property_update(prop, NC_NODE | NA_EDITED, NULL);
+
 	prop = RNA_def_property(srna, "from_node", PROP_POINTER, PROP_NONE);
 	RNA_def_property_pointer_sdna(prop, NULL, "fromnode");
 	RNA_def_property_struct_type(prop, "Node");
+	RNA_def_property_clear_flag(prop, PROP_EDITABLE);
 	RNA_def_property_ui_text(prop, "From node", "");
 
 	prop = RNA_def_property(srna, "to_node", PROP_POINTER, PROP_NONE);
 	RNA_def_property_pointer_sdna(prop, NULL, "tonode");
 	RNA_def_property_struct_type(prop, "Node");
+	RNA_def_property_clear_flag(prop, PROP_EDITABLE);
 	RNA_def_property_ui_text(prop, "To node", "");
 
 	prop = RNA_def_property(srna, "from_socket", PROP_POINTER, PROP_NONE);
 	RNA_def_property_pointer_sdna(prop, NULL, "fromsock");
 	RNA_def_property_struct_type(prop, "NodeSocket");
+	RNA_def_property_clear_flag(prop, PROP_EDITABLE);
 	RNA_def_property_ui_text(prop, "From socket", "");
 
 	prop = RNA_def_property(srna, "to_socket", PROP_POINTER, PROP_NONE);
 	RNA_def_property_pointer_sdna(prop, NULL, "tosock");
 	RNA_def_property_struct_type(prop, "NodeSocket");
+	RNA_def_property_clear_flag(prop, PROP_EDITABLE);
 	RNA_def_property_ui_text(prop, "To socket", "");
+
+	prop = RNA_def_property(srna, "is_hidden", PROP_BOOLEAN, PROP_NONE);
+	RNA_def_property_boolean_funcs(prop, "rna_NodeLink_is_hidden_get", NULL);
+	RNA_def_property_clear_flag(prop, PROP_EDITABLE);
+	RNA_def_property_ui_text(prop, "Is Hidden", "Link is hidden due to invisible sockets");
 }
 
-static void rna_def_group_sockets_api(BlenderRNA *brna, PropertyRNA *cprop, int in_out)
+static void rna_def_nodetree_nodes_api(BlenderRNA *brna, PropertyRNA *cprop)
+{
+	StructRNA *srna;
+	PropertyRNA *parm, *prop;
+	FunctionRNA *func;
+
+	RNA_def_property_srna(cprop, "Nodes");
+	srna = RNA_def_struct(brna, "Nodes", NULL);
+	RNA_def_struct_sdna(srna, "bNodeTree");
+	RNA_def_struct_ui_text(srna, "Nodes", "Collection of Nodes");
+
+	func = RNA_def_function(srna, "new", "rna_NodeTree_node_new");
+	RNA_def_function_ui_description(func, "Add a node to this node tree");
+	RNA_def_function_flag(func, FUNC_USE_CONTEXT | FUNC_USE_REPORTS);
+	parm = RNA_def_string(func, "type", "", MAX_NAME, "Type", "Type of node to add");
+	RNA_def_property_flag(parm, PROP_REQUIRED);
+	/* return value */
+	parm = RNA_def_pointer(func, "node", "Node", "", "New node");
+	RNA_def_function_return(func, parm);
+
+	func = RNA_def_function(srna, "remove", "rna_NodeTree_node_remove");
+	RNA_def_function_ui_description(func, "Remove a node from this node tree");
+	RNA_def_function_flag(func, FUNC_USE_REPORTS);
+	parm = RNA_def_pointer(func, "node", "Node", "", "The node to remove");
+	RNA_def_property_flag(parm, PROP_REQUIRED | PROP_NEVER_NULL | PROP_RNAPTR);
+	RNA_def_property_clear_flag(parm, PROP_THICK_WRAP);
+
+	func = RNA_def_function(srna, "clear", "rna_NodeTree_node_clear");
+	RNA_def_function_ui_description(func, "Remove all nodes from this node tree");
+	RNA_def_function_flag(func, FUNC_USE_REPORTS);
+
+	prop = RNA_def_property(srna, "active", PROP_POINTER, PROP_NONE);
+	RNA_def_property_struct_type(prop, "Node");
+	RNA_def_property_pointer_funcs(prop, "rna_NodeTree_active_node_get", "rna_NodeTree_active_node_set", NULL, NULL);
+	RNA_def_property_flag(prop, PROP_EDITABLE | PROP_NEVER_UNLINK);
+	RNA_def_property_ui_text(prop, "Active Node", "Active node in this tree");
+	RNA_def_property_update(prop, NC_SCENE | ND_OB_ACTIVE, NULL);
+}
+
+static void rna_def_nodetree_link_api(BlenderRNA *brna, PropertyRNA *cprop)
 {
 	StructRNA *srna;
 	PropertyRNA *parm;
 	FunctionRNA *func;
 
-	RNA_def_property_srna(cprop, (in_out == SOCK_IN ? "GroupInputs" : "GroupOutputs"));
-	srna = RNA_def_struct(brna, (in_out == SOCK_IN ? "GroupInputs" : "GroupOutputs"), NULL);
+	RNA_def_property_srna(cprop, "NodeLinks");
+	srna = RNA_def_struct(brna, "NodeLinks", NULL);
 	RNA_def_struct_sdna(srna, "bNodeTree");
-	RNA_def_struct_ui_text(srna, "Group Sockets", "Collection of group sockets");
+	RNA_def_struct_ui_text(srna, "Node Links", "Collection of Node Links");
 
-	func = RNA_def_function(srna, "new", (in_out == SOCK_IN ? "rna_NodeTree_input_new" : "rna_NodeTree_output_new"));
-	RNA_def_function_ui_description(func, "Add a socket to the group tree");
+	func = RNA_def_function(srna, "new", "rna_NodeTree_link_new");
+	RNA_def_function_ui_description(func, "Add a node link to this node tree");
 	RNA_def_function_flag(func, FUNC_USE_REPORTS);
-	RNA_def_string(func, "name", "Socket", MAX_NAME, "Name", "Name of the socket");
-	RNA_def_enum(func, "type", node_socket_type_items, SOCK_FLOAT, "Type", "Type of socket");
-	/* return value */
-	parm = RNA_def_pointer(func, "socket", "NodeSocket", "", "New socket");
+	parm = RNA_def_pointer(func, "input", "NodeSocket", "", "The input socket");
+	RNA_def_property_flag(parm, PROP_REQUIRED);
+	parm = RNA_def_pointer(func, "output", "NodeSocket", "", "The output socket");
+	RNA_def_property_flag(parm, PROP_REQUIRED);
+	RNA_def_boolean(func, "verify_limits", TRUE, "Verify Limits", "Remove existing links if connection limit is exceeded");
+	/* return */
+	parm = RNA_def_pointer(func, "link", "NodeLink", "", "New node link");
 	RNA_def_function_return(func, parm);
 
-	func = RNA_def_function(srna, "expose",
-	                        (in_out == SOCK_IN ? "rna_NodeTree_input_expose" : "rna_NodeTree_output_expose"));
-	RNA_def_function_ui_description(func, "Expose an internal socket in the group tree");
+	func = RNA_def_function(srna, "remove", "rna_NodeTree_link_remove");
+	RNA_def_function_ui_description(func, "remove a node link from the node tree");
+	RNA_def_function_flag(func, FUNC_USE_REPORTS);
+	parm = RNA_def_pointer(func, "link", "NodeLink", "", "The node link to remove");
+	RNA_def_property_flag(parm, PROP_REQUIRED | PROP_NEVER_NULL | PROP_RNAPTR);
+	RNA_def_property_clear_flag(parm, PROP_THICK_WRAP);
+
+	func = RNA_def_function(srna, "clear", "rna_NodeTree_link_clear");
+	RNA_def_function_ui_description(func, "remove all node links from the node tree");
 	RNA_def_function_flag(func, FUNC_USE_REPORTS);
-	RNA_def_pointer(func, "sock", "NodeSocket", "Socket", "Internal node socket to expose");
+}
+
+static void rna_def_node_tree_sockets_api(BlenderRNA *brna, PropertyRNA *cprop, int in_out)
+{
+	StructRNA *srna;
+	PropertyRNA *parm;
+	FunctionRNA *func;
+	const char *structtype = (in_out == SOCK_IN ? "NodeTreeInputs" : "NodeTreeOutputs");
+	const char *uiname =  (in_out == SOCK_IN ? "Node Tree Inputs" : "Node Tree Outputs");
+	const char *newfunc = (in_out == SOCK_IN ? "rna_NodeTree_inputs_new" : "rna_NodeTree_outputs_new");
+	const char *clearfunc = (in_out == SOCK_IN ? "rna_NodeTree_inputs_clear" : "rna_NodeTree_outputs_clear");
+
+	RNA_def_property_srna(cprop, structtype);
+	srna = RNA_def_struct(brna, structtype, NULL);
+	RNA_def_struct_sdna(srna, "bNodeTree");
+	RNA_def_struct_ui_text(srna, uiname, "Collection of Node Tree Sockets");
+
+	func = RNA_def_function(srna, "new", newfunc);
+	RNA_def_function_ui_description(func, "Add a socket to this node tree");
+	RNA_def_function_flag(func, FUNC_USE_REPORTS);
+	parm = RNA_def_string(func, "type", "", MAX_NAME, "Type", "Data type");
+	RNA_def_property_flag(parm, PROP_REQUIRED);
+	parm = RNA_def_string(func, "name", "", MAX_NAME, "Name", "");
 	RNA_def_property_flag(parm, PROP_REQUIRED);
-	RNA_def_boolean(func, "add_link", TRUE, "Add Link", "If TRUE, adds a link to the internal socket");
 	/* return value */
-	parm = RNA_def_pointer(func, "socket", "NodeSocket", "", "New socket");
+	parm = RNA_def_pointer(func, "socket", "NodeSocketInterface", "", "New socket");
 	RNA_def_function_return(func, parm);
+
+	func = RNA_def_function(srna, "remove", "rna_NodeTree_socket_remove");
+	RNA_def_function_ui_description(func, "Remove a socket from this node tree");
+	RNA_def_function_flag(func, FUNC_USE_REPORTS);
+	parm = RNA_def_pointer(func, "socket", "NodeSocketInterface", "", "The socket to remove");
+	RNA_def_property_flag(parm, PROP_REQUIRED);
+
+	func = RNA_def_function(srna, "clear", clearfunc);
+	RNA_def_function_ui_description(func, "Remove all sockets from this node tree");
+	RNA_def_function_flag(func, FUNC_USE_REPORTS);
 }
 
 static void rna_def_nodetree(BlenderRNA *brna)
 {
 	StructRNA *srna;
 	PropertyRNA *prop;
+	FunctionRNA *func;
+	PropertyRNA *parm;
+
+	static EnumPropertyItem static_type_items[] = {
+		{NTREE_SHADER,      "SHADER",       ICON_MATERIAL,      "Shader",       "Shader nodes"},
+		{NTREE_TEXTURE,     "TEXTURE",      ICON_TEXTURE,       "Texture",      "Texture nodes"},
+		{NTREE_COMPOSIT,    "COMPOSITING",  ICON_RENDERLAYERS,  "Compositing",  "Compositing nodes"},
+		{0, NULL, 0, NULL, NULL}
+	};
 
 	srna = RNA_def_struct(brna, "NodeTree", "ID");
 	RNA_def_struct_ui_text(srna, "Node Tree",
@@ -4944,10 +6800,18 @@ static void rna_def_nodetree(BlenderRNA *brna)
 	RNA_def_struct_sdna(srna, "bNodeTree");
 	RNA_def_struct_ui_icon(srna, ICON_NODETREE);
 	RNA_def_struct_refine_func(srna, "rna_NodeTree_refine");
+	RNA_def_struct_register_funcs(srna, "rna_NodeTree_register", "rna_NodeTree_unregister", NULL);
 
 	/* AnimData */
 	rna_def_animdata_common(srna);
-	
+
+	/* Nodes Collection */
+	prop = RNA_def_property(srna, "nodes", PROP_COLLECTION, PROP_NONE);
+	RNA_def_property_collection_sdna(prop, NULL, "nodes", NULL);
+	RNA_def_property_struct_type(prop, "Node");
+	RNA_def_property_ui_text(prop, "Nodes", "");
+	rna_def_nodetree_nodes_api(brna, prop);
+
 	/* NodeLinks Collection */
 	prop = RNA_def_property(srna, "links", PROP_COLLECTION, PROP_NONE);
 	RNA_def_property_collection_sdna(prop, NULL, "links", NULL);
@@ -4965,21 +6829,100 @@ static void rna_def_nodetree(BlenderRNA *brna)
 	
 	prop = RNA_def_property(srna, "type", PROP_ENUM, PROP_NONE);
 	RNA_def_property_clear_flag(prop, PROP_EDITABLE);
-	RNA_def_property_enum_items(prop, nodetree_type_items);
-	RNA_def_property_ui_text(prop, "Type", "Node Tree type");
+	RNA_def_property_enum_items(prop, static_type_items);
+	RNA_def_property_ui_text(prop, "Type", "Node Tree type (deprecated, bl_idname is the actual node tree type identifier)");
 
-	/* group sockets */
 	prop = RNA_def_property(srna, "inputs", PROP_COLLECTION, PROP_NONE);
 	RNA_def_property_collection_sdna(prop, NULL, "inputs", NULL);
-	RNA_def_property_struct_type(prop, "NodeSocket");
-	RNA_def_property_ui_text(prop, "Inputs", "");
-	rna_def_group_sockets_api(brna, prop, SOCK_IN);
-	
+	RNA_def_property_collection_funcs(prop, NULL, NULL, NULL, NULL, NULL, NULL,
+	                                  "rna_NodeTree_inputs_lookupstring", NULL);
+	RNA_def_property_struct_type(prop, "NodeSocketInterface");
+	RNA_def_property_clear_flag(prop, PROP_EDITABLE);
+	RNA_def_property_ui_text(prop, "Inputs", "Node tree inputs");
+	rna_def_node_tree_sockets_api(brna, prop, SOCK_IN);
+
+	prop = RNA_def_property(srna, "active_input", PROP_INT, PROP_UNSIGNED);
+	RNA_def_property_int_funcs(prop, "rna_NodeTree_active_input_get", "rna_NodeTree_active_input_set", NULL);
+	RNA_def_property_ui_text(prop, "Active Input", "Index of the active input");
+	RNA_def_property_update(prop, NC_NODE, NULL);
+
 	prop = RNA_def_property(srna, "outputs", PROP_COLLECTION, PROP_NONE);
 	RNA_def_property_collection_sdna(prop, NULL, "outputs", NULL);
-	RNA_def_property_struct_type(prop, "NodeSocket");
-	RNA_def_property_ui_text(prop, "Outputs", "");
-	rna_def_group_sockets_api(brna, prop, SOCK_OUT);
+	RNA_def_property_collection_funcs(prop, NULL, NULL, NULL, NULL, NULL, NULL,
+	                                  "rna_NodeTree_outputs_lookupstring", NULL);
+	RNA_def_property_struct_type(prop, "NodeSocketInterface");
+	RNA_def_property_clear_flag(prop, PROP_EDITABLE);
+	RNA_def_property_ui_text(prop, "Outputs", "Node tree outputs");
+	rna_def_node_tree_sockets_api(brna, prop, SOCK_OUT);
+
+	prop = RNA_def_property(srna, "active_output", PROP_INT, PROP_UNSIGNED);
+	RNA_def_property_int_funcs(prop, "rna_NodeTree_active_output_get", "rna_NodeTree_active_output_set", NULL);
+	RNA_def_property_ui_text(prop, "Active Output", "Index of the active output");
+	RNA_def_property_update(prop, NC_NODE, NULL);
+
+	/* exposed as a function for runtime interface type properties */
+	func = RNA_def_function(srna, "interface_update", "rna_NodeTree_interface_update");
+	RNA_def_function_ui_description(func, "Updated node group interface");
+	parm = RNA_def_pointer(func, "context", "Context", "", "");
+	RNA_def_property_flag(parm, PROP_REQUIRED | PROP_NEVER_NULL);
+
+	/* registration */
+	prop = RNA_def_property(srna, "bl_idname", PROP_STRING, PROP_NONE);
+	RNA_def_property_string_sdna(prop, NULL, "typeinfo->idname");
+	RNA_def_property_string_funcs(prop, "rna_NodeTree_bl_idname_get", "rna_NodeTree_bl_idname_length", NULL);
+	RNA_def_property_flag(prop, PROP_REGISTER | PROP_NEVER_CLAMP);
+	RNA_def_property_ui_text(prop, "ID Name", "");
+
+	prop = RNA_def_property(srna, "bl_label", PROP_STRING, PROP_NONE);
+	RNA_def_property_string_sdna(prop, NULL, "typeinfo->ui_name");
+	RNA_def_property_string_funcs(prop, "rna_NodeTree_bl_label_get", "rna_NodeTree_bl_label_length", NULL);
+	RNA_def_property_flag(prop, PROP_REGISTER);
+	RNA_def_property_ui_text(prop, "Label", "The node tree label");
+
+	prop = RNA_def_property(srna, "bl_description", PROP_STRING, PROP_TRANSLATION);
+	RNA_def_property_string_sdna(prop, NULL, "typeinfo->ui_description");
+	RNA_def_property_string_funcs(prop, "rna_NodeTree_bl_description_get", "rna_NodeTree_bl_description_length", NULL);
+	RNA_def_property_flag(prop, PROP_REGISTER_OPTIONAL);
+	
+	prop = RNA_def_property(srna, "bl_icon", PROP_ENUM, PROP_NONE);
+	RNA_def_property_enum_sdna(prop, NULL, "typeinfo->ui_icon");
+	RNA_def_property_enum_funcs(prop, "rna_NodeTree_bl_icon_get", NULL, NULL);
+	RNA_def_property_enum_items(prop, node_icon_items);
+	RNA_def_property_enum_default(prop, ICON_NODETREE);
+	RNA_def_property_flag(prop, PROP_REGISTER);
+	RNA_def_property_ui_text(prop, "Icon", "The node tree icon");
+
+	/* poll */
+	func = RNA_def_function(srna, "poll", NULL);
+	RNA_def_function_ui_description(func, "Check visibility in the editor");
+	RNA_def_function_flag(func, FUNC_NO_SELF | FUNC_REGISTER_OPTIONAL);
+	parm = RNA_def_pointer(func, "context", "Context", "", "");
+	RNA_def_property_flag(parm, PROP_REQUIRED | PROP_NEVER_NULL);
+	RNA_def_function_return(func, RNA_def_boolean(func, "visible", FALSE, "", ""));
+
+	/* draw add menu */
+	func = RNA_def_function(srna, "draw_add_menu", NULL);
+	RNA_def_function_ui_description(func, "Draw the menu for adding nodes");
+	RNA_def_function_flag(func, FUNC_REGISTER_OPTIONAL);
+	parm = RNA_def_pointer(func, "context", "Context", "", "");
+	RNA_def_property_flag(parm, PROP_REQUIRED | PROP_NEVER_NULL);
+	parm = RNA_def_property(func, "layout", PROP_POINTER, PROP_NONE);
+	RNA_def_property_struct_type(parm, "UILayout");
+	RNA_def_property_ui_text(parm, "Layout", "Menu layout in the UI");
+	RNA_def_property_flag(parm, PROP_REQUIRED | PROP_NEVER_NULL);
+
+	/* get a node tree from context */
+	func = RNA_def_function(srna, "get_from_context", NULL);
+	RNA_def_function_ui_description(func, "Get a node tree from the context");
+	RNA_def_function_flag(func, FUNC_NO_SELF | FUNC_REGISTER_OPTIONAL);
+	parm = RNA_def_pointer(func, "context", "Context", "", "");
+	RNA_def_property_flag(parm, PROP_REQUIRED | PROP_NEVER_NULL);
+	parm = RNA_def_pointer(func, "result_1", "NodeTree", "Node Tree", "Active node tree from context");
+	RNA_def_function_output(func, parm);
+	parm = RNA_def_pointer(func, "result_2", "ID", "Owner ID", "ID data block that owns the node tree");
+	RNA_def_function_output(func, parm);
+	parm = RNA_def_pointer(func, "result_3", "ID", "From ID", "Original ID data block selected from the context");
+	RNA_def_function_output(func, parm);
 }
 
 static void rna_def_composite_nodetree(BlenderRNA *brna)
@@ -4990,15 +6933,7 @@ static void rna_def_composite_nodetree(BlenderRNA *brna)
 	srna = RNA_def_struct(brna, "CompositorNodeTree", "NodeTree");
 	RNA_def_struct_ui_text(srna, "Compositor Node Tree", "Node tree consisting of linked nodes used for compositing");
 	RNA_def_struct_sdna(srna, "bNodeTree");
-	RNA_def_struct_ui_icon(srna, ICON_NODETREE);
-
-	/* Nodes Collection */
-	prop = RNA_def_property(srna, "nodes", PROP_COLLECTION, PROP_NONE);
-	RNA_def_property_collection_sdna(prop, NULL, "nodes", NULL);
-	RNA_def_property_struct_type(prop, "Node");
-	RNA_def_property_ui_text(prop, "Nodes", "");
-
-	rna_def_composite_nodetree_api(brna, prop);
+	RNA_def_struct_ui_icon(srna, ICON_RENDERLAYERS);
 
 	prop = RNA_def_property(srna, "render_quality", PROP_ENUM, PROP_NONE);
 	RNA_def_property_enum_sdna(prop, NULL, "render_quality");
@@ -5029,6 +6964,11 @@ static void rna_def_composite_nodetree(BlenderRNA *brna)
 	RNA_def_property_ui_text(prop, "Two Pass", "Use two pass execution during editing: first calculate fast nodes, "
 	                                           "second pass calculate all nodes");
 
+	prop = RNA_def_property(srna, "is_local_tree", PROP_BOOLEAN, PROP_NONE);
+	RNA_def_property_boolean_default(prop, FALSE);
+	RNA_def_property_flag(prop, PROP_IDPROPERTY);
+	RNA_def_property_ui_text(prop, "Local Scene Tree", "Local scene node tree, eligible for special node types");
+
 	prop = RNA_def_property(srna, "use_viewer_border", PROP_BOOLEAN, PROP_NONE);
 	RNA_def_property_boolean_sdna(prop, NULL, "flag", NTREE_VIEWER_BORDER);
 	RNA_def_property_ui_text(prop, "Viewer Border", "Use boundaries for viewer nodes and composite backdrop");
@@ -5044,15 +6984,12 @@ static void rna_def_shader_nodetree(BlenderRNA *brna)
 	RNA_def_struct_ui_text(srna, "Shader Node Tree",
 	                       "Node tree consisting of linked nodes used for materials (and other shading datablocks)");
 	RNA_def_struct_sdna(srna, "bNodeTree");
-	RNA_def_struct_ui_icon(srna, ICON_NODETREE);
+	RNA_def_struct_ui_icon(srna, ICON_MATERIAL);
 
-	/* Nodes Collection */
-	prop = RNA_def_property(srna, "nodes", PROP_COLLECTION, PROP_NONE);
-	RNA_def_property_collection_sdna(prop, NULL, "nodes", NULL);
-	RNA_def_property_struct_type(prop, "Node");
-	RNA_def_property_ui_text(prop, "Nodes", "");
-
-	rna_def_shader_nodetree_api(brna, prop);
+	prop = RNA_def_property(srna, "is_local_tree", PROP_BOOLEAN, PROP_NONE);
+	RNA_def_property_boolean_default(prop, FALSE);
+	RNA_def_property_flag(prop, PROP_IDPROPERTY);
+	RNA_def_property_ui_text(prop, "Local Material Tree", "Local material node tree, eligible for special node types");
 }
 
 static void rna_def_texture_nodetree(BlenderRNA *brna)
@@ -5063,64 +7000,87 @@ static void rna_def_texture_nodetree(BlenderRNA *brna)
 	srna = RNA_def_struct(brna, "TextureNodeTree", "NodeTree");
 	RNA_def_struct_ui_text(srna, "Texture Node Tree", "Node tree consisting of linked nodes used for textures");
 	RNA_def_struct_sdna(srna, "bNodeTree");
-	RNA_def_struct_ui_icon(srna, ICON_NODETREE);
-
-	/* Nodes Collection */
-	prop = RNA_def_property(srna, "nodes", PROP_COLLECTION, PROP_NONE);
-	RNA_def_property_collection_sdna(prop, NULL, "nodes", NULL);
-	RNA_def_property_struct_type(prop, "Node");
-	RNA_def_property_ui_text(prop, "Nodes", "");
+	RNA_def_struct_ui_icon(srna, ICON_TEXTURE);
 
-	rna_def_texture_nodetree_api(brna, prop);
+	prop = RNA_def_property(srna, "is_local_tree", PROP_BOOLEAN, PROP_NONE);
+	RNA_def_property_boolean_default(prop, FALSE);
+	RNA_def_property_flag(prop, PROP_IDPROPERTY);
+	RNA_def_property_ui_text(prop, "Local Texture Tree", "Local texture node tree, eligible for special node types");
 }
 
-static void define_specific_node(BlenderRNA *brna, int id, void (*def_func)(StructRNA *))
+static void define_specific_node(BlenderRNA *brna, const char *struct_name, const char *base_name,
+                                 const char *ui_name, const char *ui_desc, void (*def_func)(StructRNA *))
 {
-	StructRNA *srna = def_node(brna, id);
+	StructRNA *srna;
+	FunctionRNA *func;
+	PropertyRNA *parm;
 	
+	srna = RNA_def_struct(brna, struct_name, base_name);
+	RNA_def_struct_ui_text(srna, ui_name, ui_desc);
+	RNA_def_struct_sdna(srna, "bNode");
+
+	func = RNA_def_function(srna, "is_registered_node_type", "rna_Node_is_registered_node_type");
+	RNA_def_function_ui_description(func, "True if a registered node type");
+	RNA_def_function_flag(func, FUNC_NO_SELF | FUNC_USE_SELF_TYPE);
+	parm = RNA_def_boolean(func, "result", FALSE, "Result", "");
+	RNA_def_function_return(func, parm);
+
 	if (def_func)
 		def_func(srna);
 }
 
+static void rna_def_node_instance_hash(BlenderRNA *brna)
+{
+	StructRNA *srna;
+
+	srna = RNA_def_struct(brna, "NodeInstanceHash", NULL);
+	RNA_def_struct_ui_text(srna, "Node Instance Hash", "Hash table containing node instance data");
+
+	/* XXX This type is a stub for now, only used to store instance hash in the context.
+	 * Eventually could use a StructRNA pointer to define a specific data type
+	 * and expose lookup functions.
+	 */
+}
+
 void RNA_def_nodetree(BlenderRNA *brna)
 {
-	init();
-	rna_def_nodetree(brna);
-	
 	rna_def_node_socket(brna);
-	
-	/* Generate RNA definitions for all socket subtypes */
-	#define SUBTYPE(socktype, stypename, id, idname) \
-	rna_def_node_socket_subtype(brna, SOCK_##socktype, PROP_##id, "NodeSocket"#stypename#idname, \
-	                            #idname" "#stypename" Node Socket");
-	NODE_DEFINE_SUBTYPES
-	#undef SUBTYPE
-	rna_def_node_socket_subtype(brna, SOCK_BOOLEAN, 0, "NodeSocketBoolean", "Boolean Node Socket");
-	rna_def_node_socket_subtype(brna, SOCK_RGBA, 0, "NodeSocketRGBA", "RGBA Node Socket");
-	rna_def_node_socket_subtype(brna, SOCK_SHADER, 0, "NodeSocketShader", "Shader Closure Node Socket");
+	rna_def_node_socket_interface(brna);
 	
 	rna_def_node(brna);
 	rna_def_node_link(brna);
 	rna_def_shader_node(brna);
 	rna_def_compositor_node(brna);
 	rna_def_texture_node(brna);
-	rna_def_special_node(brna);
+	
+	rna_def_nodetree(brna);
+	
+	rna_def_node_socket_standard_types(brna);
 	
 	rna_def_composite_nodetree(brna);
 	rna_def_shader_nodetree(brna);
 	rna_def_texture_nodetree(brna);
+	
 	#define DefNode(Category, ID, DefFunc, EnumName, StructName, UIName, UIDesc) \
-		define_specific_node(brna, ID, DefFunc);
-		
-	#include "rna_nodetree_types.h"
+		define_specific_node(brna, #Category #StructName, #Category, UIName, UIDesc, DefFunc);
 	
-	define_specific_node(brna, NODE_GROUP, def_group);
-	define_specific_node(brna, NODE_FRAME, def_frame);
-	define_specific_node(brna, NODE_REROUTE, 0);
+	/* hack, don't want to add include path to RNA just for this, since in the future RNA types
+	 * for nodes should be defined locally at runtime anyway ...
+	 */
+	#include "../../nodes/NOD_static_types.h"
+	
+	/* Node group types need to be defined for shader, compositor, texture nodes individually.
+	 * Cannot use the static types header for this, since they share the same int id.
+	 */
+	define_specific_node(brna, "ShaderNodeGroup", "ShaderNode", "Group", "", def_group);
+	define_specific_node(brna, "CompositorNodeGroup", "CompositorNode", "Group", "", def_group);
+	define_specific_node(brna, "TextureNodeGroup", "TextureNode", "Group", "", def_group);
 	
 	/* special socket types */
 	rna_def_cmp_output_file_slot_file(brna);
 	rna_def_cmp_output_file_slot_layer(brna);
+	
+	rna_def_node_instance_hash(brna);
 }
 
 /* clean up macro definition */
diff --git a/source/blender/makesrna/intern/rna_nodetree_types.h b/source/blender/makesrna/intern/rna_nodetree_types.h
deleted file mode 100644
index b7ec9235483..00000000000
--- a/source/blender/makesrna/intern/rna_nodetree_types.h
+++ /dev/null
@@ -1,215 +0,0 @@
-/*
- * ***** BEGIN GPL LICENSE BLOCK *****
- *
- * 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.
- *
- * Contributor(s): Robin Allen
- *
- * ***** END GPL LICENSE BLOCK *****
- */
-
-/** \file blender/makesrna/intern/rna_nodetree_types.h
- *  \ingroup RNA
- */
-
-/* intentionally no include guard */
-
-/* Empty definitions for undefined macros to avoid warnings */
-#ifndef DefNode
-#define DefNode(Category, ID, DefFunc, EnumName, StructName, UIName, UIDesc)
-#endif
-
-/* WARNING! If you edit those strings, please do the same in relevant nodes files (under blender/nodes/...)! */
-
-/*       Tree type       Node ID                  RNA def function        Enum name         Struct name       UI Name              UI Description */
-DefNode( ShaderNode,     SH_NODE_OUTPUT,          0,                      "OUTPUT",         Output,           "Output",            ""              )
-DefNode( ShaderNode,     SH_NODE_MATERIAL,        def_sh_material,        "MATERIAL",       Material,         "Material",          ""              )
-DefNode( ShaderNode,     SH_NODE_RGB,             0,                      "RGB",            RGB,              "RGB",               ""              )
-DefNode( ShaderNode,     SH_NODE_VALUE,           0,                      "VALUE",          Value,            "Value",             ""              )
-DefNode( ShaderNode,     SH_NODE_MIX_RGB,         def_mix_rgb,            "MIX_RGB",        MixRGB,           "MixRGB",            ""              )
-DefNode( ShaderNode,     SH_NODE_VALTORGB,        def_colorramp,          "VALTORGB",       ValToRGB,         "ColorRamp",         ""              )
-DefNode( ShaderNode,     SH_NODE_RGBTOBW,         0,                      "RGBTOBW",        RGBToBW,          "RGB to BW",         ""              )
-DefNode( ShaderNode,     SH_NODE_TEXTURE,         def_texture,            "TEXTURE",        Texture,          "Texture",           ""              )
-DefNode( ShaderNode,     SH_NODE_NORMAL,          0,                      "NORMAL",         Normal,           "Normal",            ""              )
-DefNode( ShaderNode,     SH_NODE_GAMMA,           0,                      "GAMMA",          Gamma,            "Gamma",             ""              )
-DefNode( ShaderNode,     SH_NODE_BRIGHTCONTRAST,  0,                      "BRIGHTCONTRAST", BrightContrast,   "Bright Contrast",   ""              )
-DefNode( ShaderNode,     SH_NODE_GEOMETRY,        def_sh_geometry,        "GEOMETRY",       Geometry,         "Geometry",          ""              )
-DefNode( ShaderNode,     SH_NODE_MAPPING,         def_sh_mapping,         "MAPPING",        Mapping,          "Mapping",           ""              )
-DefNode( ShaderNode,     SH_NODE_CURVE_VEC,       def_vector_curve,       "CURVE_VEC",      VectorCurve,      "Vector Curves",     ""              )
-DefNode( ShaderNode,     SH_NODE_CURVE_RGB,       def_rgb_curve,          "CURVE_RGB",      RGBCurve,         "RGB Curves",        ""              )
-DefNode( ShaderNode,     SH_NODE_CAMERA,          0,                      "CAMERA",         CameraData,       "Camera Data",       ""              )
-DefNode( ShaderNode,     SH_NODE_MATH,            def_math,               "MATH",           Math,             "Math",              ""              )
-DefNode( ShaderNode,     SH_NODE_VECT_MATH,       def_vector_math,        "VECT_MATH",      VectorMath,       "Vector Math",       ""              )
-DefNode( ShaderNode,     SH_NODE_SQUEEZE,         0,                      "SQUEEZE",        Squeeze,          "Squeeze Value",     ""              )
-DefNode( ShaderNode,     SH_NODE_MATERIAL_EXT,    def_sh_material,        "MATERIAL_EXT",   ExtendedMaterial, "Extended Material", ""              )
-DefNode( ShaderNode,     SH_NODE_INVERT,          0,                      "INVERT",         Invert,           "Invert",            ""              )
-DefNode( ShaderNode,     SH_NODE_SEPRGB,          0,                      "SEPRGB",         SeparateRGB,      "Separate RGB",      ""              )
-DefNode( ShaderNode,     SH_NODE_COMBRGB,         0,                      "COMBRGB",        CombineRGB,       "Combine RGB",       ""              )
-DefNode( ShaderNode,     SH_NODE_HUE_SAT,         0,                      "HUE_SAT",        HueSaturation,    "Hue/Saturation",    ""              )
-
-DefNode( ShaderNode,     SH_NODE_OUTPUT_MATERIAL,    0,                      "OUTPUT_MATERIAL",    OutputMaterial,   "Material Output",   ""       )
-DefNode( ShaderNode,     SH_NODE_OUTPUT_LAMP,        0,                      "OUTPUT_LAMP",        OutputLamp,       "Lamp Output",       ""       )
-DefNode( ShaderNode,     SH_NODE_OUTPUT_WORLD,       0,                      "OUTPUT_WORLD",       OutputWorld,      "World Output",      ""       )
-DefNode( ShaderNode,     SH_NODE_FRESNEL,            0,                      "FRESNEL",            Fresnel,          "Fresnel",           ""       )
-DefNode( ShaderNode,     SH_NODE_LAYER_WEIGHT,       0,                      "LAYER_WEIGHT",       LayerWeight,      "LayerWeight",       ""       )
-DefNode( ShaderNode,     SH_NODE_MIX_SHADER,         0,                      "MIX_SHADER",         MixShader,        "Mix Shader",        ""       )
-DefNode( ShaderNode,     SH_NODE_ADD_SHADER,         0,                      "ADD_SHADER",         AddShader,        "Add Shader",        ""       )
-DefNode( ShaderNode,     SH_NODE_ATTRIBUTE,          def_sh_attribute,       "ATTRIBUTE",          Attribute,        "Attribute",         ""       )
-DefNode( ShaderNode,     SH_NODE_AMBIENT_OCCLUSION,  0,                      "AMBIENT_OCCLUSION",  AmbientOcclusion, "Ambient Occlusion", ""       )
-DefNode( ShaderNode,     SH_NODE_BACKGROUND,         0,                      "BACKGROUND",         Background,       "Background",        ""       )
-DefNode( ShaderNode,     SH_NODE_HOLDOUT,            0,                      "HOLDOUT",            Holdout,          "Holdout",           ""       )
-DefNode( ShaderNode,     SH_NODE_BSDF_ANISOTROPIC,   0,                      "BSDF_ANISOTROPIC",   BsdfAnisotropic,  "Anisotropic BSDF",  ""       )
-DefNode( ShaderNode,     SH_NODE_BSDF_DIFFUSE,       0,                      "BSDF_DIFFUSE",       BsdfDiffuse,      "Diffuse BSDF",      ""       )
-DefNode( ShaderNode,     SH_NODE_BSDF_GLOSSY,        def_glossy,             "BSDF_GLOSSY",        BsdfGlossy,       "Glossy BSDF",       ""       )
-DefNode( ShaderNode,     SH_NODE_BSDF_GLASS,         def_glossy,             "BSDF_GLASS",         BsdfGlass,        "Glass BSDF",        ""       )
-DefNode( ShaderNode,     SH_NODE_BSDF_REFRACTION,    def_glossy,             "BSDF_REFRACTION",    BsdfRefraction,   "Refraction BSDF",   ""       )
-DefNode( ShaderNode,     SH_NODE_BSDF_TRANSLUCENT,   0,                      "BSDF_TRANSLUCENT",   BsdfTranslucent,  "Translucent BSDF",  ""       )
-DefNode( ShaderNode,     SH_NODE_BSDF_TRANSPARENT,   0,                      "BSDF_TRANSPARENT",   BsdfTransparent,  "Transparent BSDF",  ""       )
-DefNode( ShaderNode,     SH_NODE_BSDF_VELVET,        0,                      "BSDF_VELVET",        BsdfVelvet,       "Velvet BSDF",       ""       )
-DefNode( ShaderNode,     SH_NODE_VOLUME_TRANSPARENT, 0,                      "VOLUME_TRANSPARENT", VolumeTransparent,"Transparent Volume",""       )
-DefNode( ShaderNode,     SH_NODE_VOLUME_ISOTROPIC,   0,                      "VOLUME_ISOTROPIC",   VolumeIsotropic,  "Isotropic Volume",  ""       )
-DefNode( ShaderNode,     SH_NODE_EMISSION,           0,                      "EMISSION",           Emission,         "Emission",          ""       )
-DefNode( ShaderNode,     SH_NODE_NEW_GEOMETRY,       0,                      "NEW_GEOMETRY",       NewGeometry,      "Geometry",          ""       )
-DefNode( ShaderNode,     SH_NODE_LIGHT_PATH,         0,                      "LIGHT_PATH",         LightPath,        "Light Path",        ""       )
-DefNode( ShaderNode,     SH_NODE_LIGHT_FALLOFF,      0,                      "LIGHT_FALLOFF",      LightFalloff,     "Light Falloff",     ""       )
-DefNode( ShaderNode,     SH_NODE_OBJECT_INFO,        0,                      "OBJECT_INFO",        ObjectInfo,       "Object Info",       ""       )
-DefNode( ShaderNode,     SH_NODE_PARTICLE_INFO,      0,                      "PARTICLE_INFO",      ParticleInfo,     "Particle Info",     ""       )
-DefNode( ShaderNode,     SH_NODE_HAIR_INFO,          0,                      "HAIR_INFO",          HairInfo,         "Hair Info",         ""       )
-DefNode( ShaderNode,     SH_NODE_BUMP,               0,                      "BUMP",               Bump,             "Bump",              ""       )
-DefNode( ShaderNode,     SH_NODE_NORMAL_MAP,         def_sh_normal_map,      "NORMAL_MAP",         NormalMap,        "Normal Map",        ""       )
-DefNode( ShaderNode,     SH_NODE_TANGENT,            def_sh_tangent,         "TANGENT",            Tangent,          "Tangent",           ""       )
-DefNode( ShaderNode,     SH_NODE_SCRIPT,             def_sh_script,          "SCRIPT",             Script,           "Script",            ""       )
-DefNode( ShaderNode,     SH_NODE_TEX_IMAGE,          def_sh_tex_image,       "TEX_IMAGE",          TexImage,         "Image Texture",     ""       )
-DefNode( ShaderNode,     SH_NODE_TEX_ENVIRONMENT,    def_sh_tex_environment, "TEX_ENVIRONMENT",    TexEnvironment,   "Environment Texture",""      )
-DefNode( ShaderNode,     SH_NODE_TEX_SKY,            def_sh_tex_sky,         "TEX_SKY",            TexSky,           "Sky Texture",       ""       )
-DefNode( ShaderNode,     SH_NODE_TEX_GRADIENT,       def_sh_tex_gradient,    "TEX_GRADIENT",       TexGradient,      "Gradient Texture",  ""       )
-DefNode( ShaderNode,     SH_NODE_TEX_NOISE,          def_sh_tex_noise,       "TEX_NOISE",          TexNoise,         "Noise Texture",     ""       )
-DefNode( ShaderNode,     SH_NODE_TEX_MAGIC,          def_sh_tex_magic,       "TEX_MAGIC",          TexMagic,         "Magic Texture",     ""       )
-DefNode( ShaderNode,     SH_NODE_TEX_WAVE,           def_sh_tex_wave,        "TEX_WAVE",           TexWave,          "Wave Texture",      ""       )
-DefNode( ShaderNode,     SH_NODE_TEX_MUSGRAVE,       def_sh_tex_musgrave,    "TEX_MUSGRAVE",       TexMusgrave,      "Musgrave Texture",  ""       )
-DefNode( ShaderNode,     SH_NODE_TEX_VORONOI,        def_sh_tex_voronoi,     "TEX_VORONOI",        TexVoronoi,       "Voronoi Texture",   ""       )
-DefNode( ShaderNode,     SH_NODE_TEX_CHECKER,        def_sh_tex_checker,     "TEX_CHECKER",        TexChecker,       "Checker Texture",   ""       )
-DefNode( ShaderNode,     SH_NODE_TEX_BRICK,          def_sh_tex_brick,       "TEX_BRICK",          TexBrick,         "Brick Texture",     ""       )
-DefNode( ShaderNode,     SH_NODE_TEX_COORD,          def_sh_tex_coord,       "TEX_COORD",          TexCoord,         "Texture Coordinate",""       )
-
-DefNode( CompositorNode, CMP_NODE_VIEWER,         def_cmp_viewer,         "VIEWER",         Viewer,           "Viewer",            ""              )
-DefNode( CompositorNode, CMP_NODE_RGB,            0,                      "RGB",            RGB,              "RGB",               ""              )
-DefNode( CompositorNode, CMP_NODE_VALUE,          0,                      "VALUE",          Value,            "Value",             ""              )
-DefNode( CompositorNode, CMP_NODE_MIX_RGB,        def_mix_rgb,            "MIX_RGB",        MixRGB,           "Mix",               ""              )
-DefNode( CompositorNode, CMP_NODE_VALTORGB,       def_colorramp,          "VALTORGB",       ValToRGB,         "ColorRamp",         ""              )
-DefNode( CompositorNode, CMP_NODE_RGBTOBW,        0,                      "RGBTOBW",        RGBToBW,          "RGB to BW",         ""              )
-DefNode( CompositorNode, CMP_NODE_NORMAL,         0,                      "NORMAL",         Normal,           "Normal",            ""              )
-DefNode( CompositorNode, CMP_NODE_CURVE_VEC,      def_vector_curve,       "CURVE_VEC",      CurveVec,         "Vector Curves",     ""              )
-DefNode( CompositorNode, CMP_NODE_CURVE_RGB,      def_rgb_curve,          "CURVE_RGB",      CurveRGB,         "RGB Curves",        ""              )
-DefNode( CompositorNode, CMP_NODE_ALPHAOVER,      def_cmp_alpha_over,     "ALPHAOVER",      AlphaOver,        "Alpha Over",        ""              )
-DefNode( CompositorNode, CMP_NODE_BLUR,           def_cmp_blur,           "BLUR",           Blur,             "Blur",              ""              )
-DefNode( CompositorNode, CMP_NODE_FILTER,         def_cmp_filter,         "FILTER",         Filter,           "Filter",            ""              )
-DefNode( CompositorNode, CMP_NODE_MAP_VALUE,      def_cmp_map_value,      "MAP_VALUE",      MapValue,         "Map Value",         ""              )
-DefNode( CompositorNode, CMP_NODE_MAP_RANGE,      def_cmp_map_range,      "MAP_RANGE",      MapRange,         "Map Range",         ""              )
-DefNode( CompositorNode, CMP_NODE_TIME,           def_time,               "TIME",           Time,             "Time",              ""              )
-DefNode( CompositorNode, CMP_NODE_VECBLUR,        def_cmp_vector_blur,    "VECBLUR",        VecBlur,          "Vector Blur",       ""              )
-DefNode( CompositorNode, CMP_NODE_SEPRGBA,        0,                      "SEPRGBA",        SepRGBA,          "Separate RGBA",     ""              )
-DefNode( CompositorNode, CMP_NODE_SEPHSVA,        0,                      "SEPHSVA",        SepHSVA,          "Separate HSVA",     ""              )
-DefNode( CompositorNode, CMP_NODE_SETALPHA,       0,                      "SETALPHA",       SetAlpha,         "Set Alpha",         ""              )
-DefNode( CompositorNode, CMP_NODE_HUE_SAT,        def_cmp_hue_saturation, "HUE_SAT",        HueSat,           "Hue Saturation Value",""            )
-DefNode( CompositorNode, CMP_NODE_IMAGE,          def_cmp_image,          "IMAGE",          Image,            "Image",             ""              )
-DefNode( CompositorNode, CMP_NODE_R_LAYERS,       def_cmp_render_layers,  "R_LAYERS",       RLayers,          "Render Layers",     ""              )
-DefNode( CompositorNode, CMP_NODE_COMPOSITE,      def_cmp_composite,      "COMPOSITE",      Composite,        "Composite",         ""              )
-DefNode( CompositorNode, CMP_NODE_OUTPUT_FILE,    def_cmp_output_file,    "OUTPUT_FILE",    OutputFile,       "File Output",       ""              )
-DefNode( CompositorNode, CMP_NODE_TEXTURE,        def_texture,            "TEXTURE",        Texture,          "Texture",           ""              )
-DefNode( CompositorNode, CMP_NODE_TRANSLATE,      def_cmp_translate,      "TRANSLATE",      Translate,        "Translate",         ""              )
-DefNode( CompositorNode, CMP_NODE_ZCOMBINE,       def_cmp_zcombine,       "ZCOMBINE",       Zcombine,         "Z Combine",         ""              )
-DefNode( CompositorNode, CMP_NODE_COMBRGBA,       0,                      "COMBRGBA",       CombRGBA,         "Combine RGBA",      ""              )
-DefNode( CompositorNode, CMP_NODE_DILATEERODE,    def_cmp_dilate_erode,   "DILATEERODE",    DilateErode,      "Dilate/Erode",      ""              )
-DefNode( CompositorNode, CMP_NODE_INPAINT,        def_cmp_inpaint,        "INPAINT",        Inpaint,          "Inpaint",           ""              )
-DefNode( CompositorNode, CMP_NODE_DESPECKLE,      def_cmp_despeckle,      "DESPECKLE",      Despeckle,        "Despeckle",         ""              )
-DefNode( CompositorNode, CMP_NODE_ROTATE,         def_cmp_rotate,         "ROTATE",         Rotate,           "Rotate",            ""              )
-DefNode( CompositorNode, CMP_NODE_SCALE,          def_cmp_scale,          "SCALE",          Scale,            "Scale",             ""              )
-DefNode( CompositorNode, CMP_NODE_SEPYCCA,        def_cmp_ycc,            "SEPYCCA",        SepYCCA,          "Separate YCbCrA",   ""              )
-DefNode( CompositorNode, CMP_NODE_COMBYCCA,       def_cmp_ycc,            "COMBYCCA",       CombYCCA,         "Combine YCbCrA",    ""              )
-DefNode( CompositorNode, CMP_NODE_SEPYUVA,        0,                      "SEPYUVA",        SepYUVA,          "Separate YUVA",     ""              )
-DefNode( CompositorNode, CMP_NODE_COMBYUVA,       0,                      "COMBYUVA",       CombYUVA,         "Combine YUVA",      ""              )
-DefNode( CompositorNode, CMP_NODE_DIFF_MATTE,     def_cmp_diff_matte,     "DIFF_MATTE",     DiffMatte,        "Difference Key",    ""              )
-DefNode( CompositorNode, CMP_NODE_COLOR_SPILL,    def_cmp_color_spill,    "COLOR_SPILL",    ColorSpill,       "Color Spill",       ""              )
-DefNode( CompositorNode, CMP_NODE_CHROMA_MATTE,   def_cmp_chroma_matte,   "CHROMA_MATTE",   ChromaMatte,      "Chroma Key",        ""              )
-DefNode( CompositorNode, CMP_NODE_CHANNEL_MATTE,  def_cmp_channel_matte,  "CHANNEL_MATTE",  ChannelMatte,     "Channel Key",       ""              )
-DefNode( CompositorNode, CMP_NODE_FLIP,           def_cmp_flip,           "FLIP",           Flip,             "Flip",              ""              )
-DefNode( CompositorNode, CMP_NODE_SPLITVIEWER,    def_cmp_splitviewer,    "SPLITVIEWER",    SplitViewer,      "Split Viewer",      ""              )
-DefNode( CompositorNode, CMP_NODE_MAP_UV,         def_cmp_map_uv,         "MAP_UV",         MapUV,            "Map UV",            ""              )
-DefNode( CompositorNode, CMP_NODE_ID_MASK,        def_cmp_id_mask,        "ID_MASK",        IDMask,           "ID Mask",           ""              )
-DefNode( CompositorNode, CMP_NODE_DOUBLEEDGEMASK, def_cmp_double_edge_mask,"DOUBLEEDGEMASK", DoubleEdgeMask,  "Double Edge Mask",  ""              )
-DefNode( CompositorNode, CMP_NODE_DEFOCUS,        def_cmp_defocus,        "DEFOCUS",        Defocus,          "Defocus",           ""              )
-DefNode( CompositorNode, CMP_NODE_DISPLACE,       0,                      "DISPLACE",       Displace,         "Displace",          ""              )
-DefNode( CompositorNode, CMP_NODE_COMBHSVA,       0,                      "COMBHSVA",       CombHSVA,         "Combine HSVA",      ""              )
-DefNode( CompositorNode, CMP_NODE_MATH,           def_math,               "MATH",           Math,             "Math",              ""              )
-DefNode( CompositorNode, CMP_NODE_LUMA_MATTE,     def_cmp_luma_matte,     "LUMA_MATTE",     LumaMatte,        "Luminance Key",     ""              )
-DefNode( CompositorNode, CMP_NODE_BRIGHTCONTRAST, 0,                      "BRIGHTCONTRAST", BrightContrast,   "Bright/Contrast",   ""              )
-DefNode( CompositorNode, CMP_NODE_GAMMA,          0,                      "GAMMA",          Gamma,            "Gamma",             ""              )
-DefNode( CompositorNode, CMP_NODE_INVERT,         def_cmp_invert,         "INVERT",         Invert,           "Invert",            ""              )
-DefNode( CompositorNode, CMP_NODE_NORMALIZE,      0,                      "NORMALIZE",      Normalize,        "Normalize",         ""              )
-DefNode( CompositorNode, CMP_NODE_CROP,           def_cmp_crop,           "CROP",           Crop,             "Crop",              ""              )
-DefNode( CompositorNode, CMP_NODE_DBLUR,          def_cmp_dblur,          "DBLUR",          DBlur,            "Directional Blur",  ""              )
-DefNode( CompositorNode, CMP_NODE_BILATERALBLUR,  def_cmp_bilateral_blur, "BILATERALBLUR",  Bilateralblur,    "Bilateral Blur",    ""              )
-DefNode( CompositorNode, CMP_NODE_PREMULKEY,      def_cmp_premul_key,     "PREMULKEY",      PremulKey,        "Alpha Convert",     ""              )
-DefNode( CompositorNode, CMP_NODE_GLARE,          def_cmp_glare,          "GLARE",          Glare,            "Glare",             ""              )
-DefNode( CompositorNode, CMP_NODE_TONEMAP,        def_cmp_tonemap,        "TONEMAP",        Tonemap,          "Tonemap",           ""              )
-DefNode( CompositorNode, CMP_NODE_LENSDIST,       def_cmp_lensdist,       "LENSDIST",       Lensdist,         "Lens Distortion",   ""              )
-DefNode( CompositorNode, CMP_NODE_VIEW_LEVELS,    def_cmp_levels,         "LEVELS",         Levels,           "Levels",            ""              )
-DefNode( CompositorNode, CMP_NODE_COLOR_MATTE,    def_cmp_color_matte,    "COLOR_MATTE",    ColorMatte,       "Color Key",         ""              )
-DefNode( CompositorNode, CMP_NODE_DIST_MATTE,     def_cmp_distance_matte, "DISTANCE_MATTE", DistanceMatte,    "Distance Key",      ""              )
-DefNode( CompositorNode, CMP_NODE_COLORBALANCE,   def_cmp_colorbalance,   "COLORBALANCE",   ColorBalance,     "Color Balance",     ""              )
-DefNode( CompositorNode, CMP_NODE_HUECORRECT,     def_cmp_huecorrect,     "HUECORRECT",     HueCorrect,       "Hue Correct",       ""              )
-DefNode( CompositorNode, CMP_NODE_MOVIECLIP,      def_cmp_movieclip,      "MOVIECLIP",      MovieClip,        "Movie Clip",        ""              )
-DefNode( CompositorNode, CMP_NODE_TRANSFORM,      dev_cmd_transform,      "TRANSFORM",      Transform,        "Transform",         ""              )
-DefNode( CompositorNode, CMP_NODE_STABILIZE2D,    def_cmp_stabilize2d,    "STABILIZE2D",    Stabilize,        "Stabilize 2D",      ""              )
-DefNode( CompositorNode, CMP_NODE_MOVIEDISTORTION,def_cmp_moviedistortion,"MOVIEDISTORTION",MovieDistortion,  "Movie Distortion",  ""              )
-DefNode( CompositorNode, CMP_NODE_MASK_BOX,       def_cmp_boxmask,        "BOXMASK",        BoxMask,          "Box Mask",          ""              )
-DefNode( CompositorNode, CMP_NODE_MASK_ELLIPSE,   def_cmp_ellipsemask,    "ELLIPSEMASK",    EllipseMask,      "Ellipse Mask",      ""              )
-DefNode( CompositorNode, CMP_NODE_BOKEHIMAGE,     def_cmp_bokehimage,     "BOKEHIMAGE",     BokehImage,       "Bokeh Image",       ""              )
-DefNode( CompositorNode, CMP_NODE_BOKEHBLUR,      def_cmp_bokehblur,      "BOKEHBLUR",      BokehBlur,        "Bokeh Blur",        ""              )
-DefNode( CompositorNode, CMP_NODE_SWITCH,         def_cmp_switch,         "SWITCH",         Switch,           "Switch",            ""              )
-DefNode( CompositorNode, CMP_NODE_COLORCORRECTION,def_cmp_colorcorrection,"COLORCORRECTION",ColorCorrection,  "Color Correction",  ""              )
-DefNode( CompositorNode, CMP_NODE_MASK,           def_cmp_mask,           "MASK",           Mask,             "Mask",              ""              )
-DefNode( CompositorNode, CMP_NODE_KEYINGSCREEN,   def_cmp_keyingscreen,   "KEYINGSCREEN",   KeyingScreen,     "Keying Screen",     ""              )
-DefNode( CompositorNode, CMP_NODE_KEYING,         def_cmp_keying,         "KEYING",         Keying,           "Keying",            ""              )
-DefNode( CompositorNode, CMP_NODE_TRACKPOS,       def_cmp_trackpos,       "TRACKPOS",       TrackPos,         "Track Position",    ""              )
-DefNode( CompositorNode, CMP_NODE_PIXELATE,       0,                      "PIXELATE",       Pixelate,         "Pixelate",          ""              )
-                                                                                                                                                   
-DefNode( TextureNode,    TEX_NODE_OUTPUT,         def_tex_output,         "OUTPUT",         Output,           "Output",            ""              )
-DefNode( TextureNode,    TEX_NODE_CHECKER,        0,                      "CHECKER",        Checker,          "Checker",           ""              )
-DefNode( TextureNode,    TEX_NODE_TEXTURE,        def_texture,            "TEXTURE",        Texture,          "Texture",           ""              )
-DefNode( TextureNode,    TEX_NODE_BRICKS,         def_tex_bricks,         "BRICKS",         Bricks,           "Bricks",            ""              )
-DefNode( TextureNode,    TEX_NODE_MATH,           def_math,               "MATH",           Math,             "Math",              ""              )
-DefNode( TextureNode,    TEX_NODE_MIX_RGB,        def_mix_rgb,            "MIX_RGB",        MixRGB,           "Mix RGB",           ""              )
-DefNode( TextureNode,    TEX_NODE_RGBTOBW,        0,                      "RGBTOBW",        RGBToBW,          "RGB to BW",         ""              )
-DefNode( TextureNode,    TEX_NODE_VALTORGB,       def_colorramp,          "VALTORGB",       ValToRGB,         "ColorRamp",         ""              )
-DefNode( TextureNode,    TEX_NODE_IMAGE,          def_tex_image,          "IMAGE",          Image,            "Image",             ""              )
-DefNode( TextureNode,    TEX_NODE_CURVE_RGB,      def_rgb_curve,          "CURVE_RGB",      CurveRGB,         "RGB Curves",        ""              )
-DefNode( TextureNode,    TEX_NODE_INVERT,         0,                      "INVERT",         Invert,           "Invert",            ""              )
-DefNode( TextureNode,    TEX_NODE_HUE_SAT,        0,                      "HUE_SAT",        HueSaturation,    "Hue/Saturation",    ""              )
-DefNode( TextureNode,    TEX_NODE_CURVE_TIME,     def_time,               "CURVE_TIME",     CurveTime,        "Curve Time",        ""              )
-DefNode( TextureNode,    TEX_NODE_ROTATE,         0,                      "ROTATE",         Rotate,           "Rotate",            ""              )
-DefNode( TextureNode,    TEX_NODE_VIEWER,         0,                      "VIEWER",         Viewer,           "Viewer",            ""              )
-DefNode( TextureNode,    TEX_NODE_TRANSLATE,      0,                      "TRANSLATE",      Translate,        "Translate",         ""              )
-DefNode( TextureNode,    TEX_NODE_COORD,          0,                      "COORD",          Coordinates,      "Coordinates",       ""              )
-DefNode( TextureNode,    TEX_NODE_DISTANCE,       0,                      "DISTANCE",       Distance,         "Distance",          ""              )
-DefNode( TextureNode,    TEX_NODE_COMPOSE,        0,                      "COMPOSE",        Compose,          "Combine RGBA",      ""              )
-DefNode( TextureNode,    TEX_NODE_DECOMPOSE,      0,                      "DECOMPOSE",      Decompose,        "Separate RGBA",     ""              )
-DefNode( TextureNode,    TEX_NODE_VALTONOR,       0,                      "VALTONOR",       ValToNor,         "Value to Normal",   ""              )
-DefNode( TextureNode,    TEX_NODE_SCALE,          0,                      "SCALE",          Scale,            "Scale",             ""              )
-
-
-/* undefine macros */
-#undef DefNode
diff --git a/source/blender/makesrna/intern/rna_object.c b/source/blender/makesrna/intern/rna_object.c
index 4b32c4a237a..594b86f000c 100644
--- a/source/blender/makesrna/intern/rna_object.c
+++ b/source/blender/makesrna/intern/rna_object.c
@@ -2030,6 +2030,7 @@ static void rna_def_object(BlenderRNA *brna)
 		{OB_BOUND_SPHERE, "SPHERE", 0, "Sphere", "Draw bounds as sphere"},
 		{OB_BOUND_CYLINDER, "CYLINDER", 0, "Cylinder", "Draw bounds as cylinder"},
 		{OB_BOUND_CONE, "CONE", 0, "Cone", "Draw bounds as cone"},
+		{OB_BOUND_CAPSULE, "CAPSULE", 0, "Capsule", "Draw bounds as capsule"},
 		{0, NULL, 0, NULL, NULL}
 	};
 
diff --git a/source/blender/makesrna/intern/rna_scene.c b/source/blender/makesrna/intern/rna_scene.c
index 23a3c2188da..0553402d111 100644
--- a/source/blender/makesrna/intern/rna_scene.c
+++ b/source/blender/makesrna/intern/rna_scene.c
@@ -1180,13 +1180,12 @@ static void rna_SceneRenderLayer_pass_update(Main *bmain, Scene *activescene, Po
 	rna_Scene_glsl_update(bmain, activescene, ptr);
 }
 
-static void rna_Scene_use_nodes_set(PointerRNA *ptr, int value)
+static void rna_Scene_use_nodes_update(bContext *C, PointerRNA *ptr)
 {
 	Scene *scene = (Scene *)ptr->data;
 
-	scene->use_nodes = value;
 	if (scene->use_nodes && scene->nodetree == NULL)
-		ED_node_composit_default(scene);
+		ED_node_composit_default(C, scene);
 }
 
 static void rna_Physics_update(Main *UNUSED(bmain), Scene *UNUSED(scene), PointerRNA *ptr)
@@ -3109,7 +3108,7 @@ static void rna_def_scene_game_data(BlenderRNA *brna)
 	prop = RNA_def_property(srna, "fps", PROP_INT, PROP_NONE);
 	RNA_def_property_int_sdna(prop, NULL, "ticrate");
 	RNA_def_property_ui_range(prop, 1, 60, 1, 1);
-	RNA_def_property_range(prop, 1, 250);
+	RNA_def_property_range(prop, 1, 10000);
 	RNA_def_property_ui_text(prop, "Frames Per Second",
 	                         "Nominal number of game frames per second "
 	                         "(physics fixed timestep = 1/fps, independently of actual frame rate)");
@@ -5051,9 +5050,9 @@ void RNA_def_scene(BlenderRNA *brna)
 
 	prop = RNA_def_property(srna, "use_nodes", PROP_BOOLEAN, PROP_NONE);
 	RNA_def_property_boolean_sdna(prop, NULL, "use_nodes", 1);
-	RNA_def_property_boolean_funcs(prop, NULL, "rna_Scene_use_nodes_set");
+	RNA_def_property_flag(prop, PROP_CONTEXT_UPDATE);
 	RNA_def_property_ui_text(prop, "Use Nodes", "Enable the compositing node tree");
-	RNA_def_property_update(prop, NC_SCENE | ND_RENDER_OPTIONS, NULL);
+	RNA_def_property_update(prop, NC_SCENE | ND_RENDER_OPTIONS, "rna_Scene_use_nodes_update");
 	
 	/* Sequencer */
 	prop = RNA_def_property(srna, "sequence_editor", PROP_POINTER, PROP_NONE);
diff --git a/source/blender/makesrna/intern/rna_sequencer.c b/source/blender/makesrna/intern/rna_sequencer.c
index 9b81f042358..ed9d12cd1e0 100644
--- a/source/blender/makesrna/intern/rna_sequencer.c
+++ b/source/blender/makesrna/intern/rna_sequencer.c
@@ -35,6 +35,8 @@
 
 #include "BLI_math.h"
 
+#include "BLF_translation.h"
+
 #include "BKE_animsys.h"
 #include "BKE_global.h"
 #include "BKE_sequencer.h"
@@ -50,8 +52,6 @@
 
 #include "WM_types.h"
 
-#include "BLF_translation.h"
-
 typedef struct EffectInfo {
 	const char *struct_name;
 	const char *ui_name;
@@ -1325,6 +1325,7 @@ static void rna_def_sequence(BlenderRNA *brna)
 	RNA_def_property_clear_flag(prop, PROP_EDITABLE);
 	RNA_def_property_enum_items(prop, seq_type_items);
 	RNA_def_property_ui_text(prop, "Type", "");
+	RNA_def_property_translation_context(prop, BLF_I18NCONTEXT_ID_SEQUENCE);
 	RNA_def_property_update(prop, NC_SCENE | ND_SEQUENCER, "rna_Sequence_update");
 
 
diff --git a/source/blender/makesrna/intern/rna_space.c b/source/blender/makesrna/intern/rna_space.c
index 4bfc54c25ed..309de9c7fd1 100644
--- a/source/blender/makesrna/intern/rna_space.c
+++ b/source/blender/makesrna/intern/rna_space.c
@@ -25,6 +25,7 @@
  */
 
 #include <stdlib.h>
+#include <string.h>
 
 #include "MEM_guardedalloc.h"
 
@@ -32,6 +33,7 @@
 
 #include "BKE_key.h"
 #include "BKE_movieclip.h"
+#include "BKE_node.h"
 
 #include "DNA_action_types.h"
 #include "DNA_key_types.h"
@@ -1014,20 +1016,91 @@ static void rna_BackgroundImage_clear(View3D *v3d)
 
 /* Space Node Editor */
 
-static int rna_SpaceNodeEditor_node_tree_poll(PointerRNA *ptr, PointerRNA value)
+static void rna_SpaceNodeEditor_node_tree_set(PointerRNA *ptr, const PointerRNA value)
+{
+	SpaceNode *snode = (SpaceNode *)ptr->data;
+	ED_node_tree_start(snode, (bNodeTree *)value.data, NULL, NULL);
+}
+
+static int rna_SpaceNodeEditor_node_tree_poll(PointerRNA *ptr, const PointerRNA value)
 {
 	SpaceNode *snode = (SpaceNode *)ptr->data;
 	bNodeTree *ntree = (bNodeTree *)value.data;
 	
-	/* exclude group trees, only trees of the active type */
-	return (ntree->nodetype == 0 && ntree->type == snode->treetype);
+	/* node tree type must match the selected type in node editor */
+	return (strcmp(snode->tree_idname, ntree->idname) == 0);
 }
 
-static void rna_SpaceNodeEditor_node_tree_update(Main *UNUSED(bmain), Scene *scene, PointerRNA *ptr)
+static void rna_SpaceNodeEditor_node_tree_update(const bContext *C, PointerRNA *UNUSED(ptr))
+{
+	ED_node_tree_update(C);
+}
+
+static int rna_SpaceNodeEditor_tree_type_get(PointerRNA *ptr)
 {
 	SpaceNode *snode = (SpaceNode *)ptr->data;
+	return rna_node_tree_idname_to_enum(snode->tree_idname);
+}
+static void rna_SpaceNodeEditor_tree_type_set(PointerRNA *ptr, int value)
+{
+	SpaceNode *snode = (SpaceNode *)ptr->data;
+	ED_node_set_tree_type(snode, rna_node_tree_type_from_enum(value));
+}
+static int rna_SpaceNodeEditor_tree_type_poll(void *Cv, bNodeTreeType *type)
+{
+	bContext *C = (bContext *)Cv;
+	if (type->poll)
+		return type->poll(C, type);
+	else
+		return TRUE;
+}
+static EnumPropertyItem *rna_SpaceNodeEditor_tree_type_itemf(bContext *C, PointerRNA *UNUSED(ptr), PropertyRNA *UNUSED(prop), int *free)
+{
+	return rna_node_tree_type_itemf(C, rna_SpaceNodeEditor_tree_type_poll, free);
+}
+
+static void rna_SpaceNodeEditor_path_get(PointerRNA *ptr, char *value)
+{
+	SpaceNode *snode = ptr->data;
+	ED_node_tree_path_get(snode, value);
+}
+
+static int rna_SpaceNodeEditor_path_length(PointerRNA *ptr)
+{
+	SpaceNode *snode = ptr->data;
+	return ED_node_tree_path_length(snode);
+}
+
+void rna_SpaceNodeEditor_path_clear(SpaceNode *snode, bContext *C)
+{
+	ED_node_tree_start(snode, NULL, NULL, NULL);
+	ED_node_tree_update(C);
+}
+
+void rna_SpaceNodeEditor_path_start(SpaceNode *snode, bContext *C, PointerRNA *node_tree)
+{
+	ED_node_tree_start(snode, (bNodeTree *)node_tree->data, NULL, NULL);
+	ED_node_tree_update(C);
+}
+
+void rna_SpaceNodeEditor_path_push(SpaceNode *snode, bContext *C, ReportList *reports, PointerRNA *node)
+{
+	PointerRNA tree_ptr;
+	
+	tree_ptr = RNA_pointer_get(node, "node_tree");
+	if (!tree_ptr.data) {
+		BKE_reportf(reports, RPT_WARNING, "Missing node group tree in node %s", ((bNode *)node->data)->name);
+		return;
+	}
 	
-	ED_node_tree_update(snode, scene);
+	ED_node_tree_push(snode, (bNodeTree *)tree_ptr.data, (bNode *)node->data);
+	ED_node_tree_update(C);
+}
+
+void rna_SpaceNodeEditor_path_pop(SpaceNode *snode, bContext *C)
+{
+	ED_node_tree_pop(snode);
+	ED_node_tree_update(C);
 }
 
 static EnumPropertyItem *rna_SpaceProperties_texture_context_itemf(bContext *C, PointerRNA *UNUSED(ptr),
@@ -3078,6 +3151,58 @@ static void rna_def_space_userpref(BlenderRNA *brna)
 
 }
 
+static void rna_def_node_tree_path(BlenderRNA *brna)
+{
+	StructRNA *srna;
+	PropertyRNA *prop;
+	
+	srna = RNA_def_struct(brna, "NodeTreePath", NULL);
+	RNA_def_struct_sdna(srna, "bNodeTreePath");
+	RNA_def_struct_ui_text(srna, "Node Tree Path", "Element of the node space tree path");
+
+	prop = RNA_def_property(srna, "node_tree", PROP_POINTER, PROP_NONE);
+	RNA_def_property_pointer_sdna(prop, NULL, "nodetree");
+	RNA_def_property_clear_flag(prop, PROP_EDITABLE);
+	RNA_def_property_ui_text(prop, "Node Tree", "Base node tree from context");
+}
+
+static void rna_def_space_node_path_api(BlenderRNA *brna, PropertyRNA *cprop)
+{
+	StructRNA *srna;
+	PropertyRNA *prop, *parm;
+	FunctionRNA *func;
+
+	RNA_def_property_srna(cprop, "SpaceNodeEditorPath");
+	srna = RNA_def_struct(brna, "SpaceNodeEditorPath", NULL);
+	RNA_def_struct_sdna(srna, "SpaceNode");
+	RNA_def_struct_ui_text(srna, "Space Node Editor Path", "History of node trees in the editor");
+
+	prop = RNA_def_property(srna, "to_string", PROP_STRING, PROP_NONE);
+	RNA_def_property_string_funcs(prop, "rna_SpaceNodeEditor_path_get", "rna_SpaceNodeEditor_path_length", NULL);
+	RNA_def_property_clear_flag(prop, PROP_EDITABLE);
+	RNA_def_struct_ui_text(srna, "Path", "Get the node tree path as a string");
+
+	func = RNA_def_function(srna, "clear", "rna_SpaceNodeEditor_path_clear");
+	RNA_def_function_ui_description(func, "Reset the node tree path");
+	RNA_def_function_flag(func, FUNC_USE_CONTEXT);
+
+	func = RNA_def_function(srna, "start", "rna_SpaceNodeEditor_path_start");
+	RNA_def_function_ui_description(func, "Set the root node tree");
+	RNA_def_function_flag(func, FUNC_USE_CONTEXT);
+	parm = RNA_def_pointer(func, "node_tree", "NodeTree", "Node Tree", "");
+	RNA_def_property_flag(parm, PROP_REQUIRED | PROP_RNAPTR);
+
+	func = RNA_def_function(srna, "push", "rna_SpaceNodeEditor_path_push");
+	RNA_def_function_ui_description(func, "Append a node group tree to the path");
+	RNA_def_function_flag(func, FUNC_USE_CONTEXT | FUNC_USE_REPORTS);
+	parm = RNA_def_pointer(func, "node", "NodeGroup", "Node", "Group node");
+	RNA_def_property_flag(parm, PROP_REQUIRED | PROP_RNAPTR);
+
+	func = RNA_def_function(srna, "pop", "rna_SpaceNodeEditor_path_pop");
+	RNA_def_function_ui_description(func, "Remove the last node tree from the path");
+	RNA_def_function_flag(func, FUNC_USE_CONTEXT);
+}
+
 static void rna_def_space_node(BlenderRNA *brna)
 {
 	StructRNA *srna;
@@ -3107,13 +3232,17 @@ static void rna_def_space_node(BlenderRNA *brna)
 		{0, NULL, 0, NULL, NULL}
 	};
 
+	static EnumPropertyItem dummy_items[] = {
+		{0, "DUMMY", 0, "", ""},
+		{0, NULL, 0, NULL, NULL}};
+
 	srna = RNA_def_struct(brna, "SpaceNodeEditor", "Space");
 	RNA_def_struct_sdna(srna, "SpaceNode");
 	RNA_def_struct_ui_text(srna, "Space Node Editor", "Node editor space data");
 
 	prop = RNA_def_property(srna, "tree_type", PROP_ENUM, PROP_NONE);
-	RNA_def_property_enum_sdna(prop, NULL, "treetype");
-	RNA_def_property_enum_items(prop, nodetree_type_items);
+	RNA_def_property_enum_items(prop, dummy_items);
+	RNA_def_property_enum_funcs(prop, "rna_SpaceNodeEditor_tree_type_get", "rna_SpaceNodeEditor_tree_type_set", "rna_SpaceNodeEditor_tree_type_itemf");
 	RNA_def_property_ui_text(prop, "Tree Type", "Node tree type to display and edit");
 	RNA_def_property_update(prop, NC_SPACE | ND_SPACE_NODE, NULL);
 
@@ -3138,17 +3267,29 @@ static void rna_def_space_node(BlenderRNA *brna)
 	RNA_def_property_clear_flag(prop, PROP_EDITABLE);
 	RNA_def_property_ui_text(prop, "ID From", "Datablock from which the edited datablock is linked");
 
+	prop = RNA_def_property(srna, "path", PROP_COLLECTION, PROP_NONE);
+	RNA_def_property_collection_sdna(prop, NULL, "treepath", NULL);
+	RNA_def_property_struct_type(prop, "NodeTreePath");
+	RNA_def_property_ui_text(prop, "Node Tree Path", "Path from the data block to the currently edited node tree");
+	rna_def_space_node_path_api(brna, prop);
+
 	prop = RNA_def_property(srna, "node_tree", PROP_POINTER, PROP_NONE);
+	RNA_def_property_pointer_funcs(prop, NULL, "rna_SpaceNodeEditor_node_tree_set", NULL, "rna_SpaceNodeEditor_node_tree_poll");
 	RNA_def_property_pointer_sdna(prop, NULL, "nodetree");
-	RNA_def_property_pointer_funcs(prop, NULL, NULL, NULL, "rna_SpaceNodeEditor_node_tree_poll");
-	RNA_def_property_flag(prop, PROP_EDITABLE);
-	RNA_def_property_ui_text(prop, "Node Tree", "Node tree being displayed");
+	RNA_def_property_flag(prop, PROP_EDITABLE | PROP_CONTEXT_UPDATE);
+	RNA_def_property_ui_text(prop, "Node Tree", "Base node tree from context");
 	RNA_def_property_update(prop, NC_SPACE | ND_SPACE_NODE, "rna_SpaceNodeEditor_node_tree_update");
 
 	prop = RNA_def_property(srna, "edit_tree", PROP_POINTER, PROP_NONE);
 	RNA_def_property_pointer_sdna(prop, NULL, "edittree");
 	RNA_def_property_clear_flag(prop, PROP_EDITABLE);
-	RNA_def_property_ui_text(prop, "Edit Tree", "Edited node tree");
+	RNA_def_property_ui_text(prop, "Edit Tree", "Node tree being displayed and edited");
+
+	prop = RNA_def_property(srna, "pin", PROP_BOOLEAN, PROP_NONE);
+	RNA_def_property_boolean_sdna(prop, NULL, "flag", SNODE_PIN);
+	RNA_def_property_ui_text(prop, "Pinned", "Use the pinned node tree");
+	RNA_def_property_ui_icon(prop, ICON_UNPINNED, 1);
+	RNA_def_property_update(prop, NC_SPACE | ND_SPACE_NODE, NULL);
 
 	prop = RNA_def_property(srna, "show_backdrop", PROP_BOOLEAN, PROP_NONE);
 	RNA_def_property_boolean_sdna(prop, NULL, "flag", SNODE_BACKDRAW);
@@ -3545,6 +3686,7 @@ void RNA_def_space(BlenderRNA *brna)
 	rna_def_console_line(brna);
 	rna_def_space_info(brna);
 	rna_def_space_userpref(brna);
+	rna_def_node_tree_path(brna);
 	rna_def_space_node(brna);
 	rna_def_space_logic(brna);
 	rna_def_space_clip(brna);
diff --git a/source/blender/makesrna/intern/rna_texture.c b/source/blender/makesrna/intern/rna_texture.c
index d86e5fd0d9c..e8f812506e2 100644
--- a/source/blender/makesrna/intern/rna_texture.c
+++ b/source/blender/makesrna/intern/rna_texture.c
@@ -107,6 +107,7 @@ EnumPropertyItem blend_type_items[] = {
 
 #include "RNA_access.h"
 
+#include "BKE_context.h"
 #include "BKE_depsgraph.h"
 #include "BKE_image.h"
 #include "BKE_texture.h"
@@ -167,7 +168,7 @@ static void rna_Texture_update(Main *bmain, Scene *UNUSED(scene), PointerRNA *pt
 	}
 	else if (GS(id->name) == ID_NT) {
 		bNodeTree *ntree = ptr->id.data;
-		ED_node_generic_update(bmain, ntree, NULL);
+		ED_node_tag_update_nodetree(bmain, ntree);
 	}
 }
 
@@ -381,18 +382,21 @@ static void rna_Texture_use_color_ramp_set(PointerRNA *ptr, int value)
 	else tex->flag &= ~TEX_COLORBAND;
 
 	if ((tex->flag & TEX_COLORBAND) && tex->coba == NULL)
-		tex->coba = add_colorband(0);
+		tex->coba = add_colorband(false);
 }
 
-static void rna_Texture_use_nodes_set(PointerRNA *ptr, int v)
+static void rna_Texture_use_nodes_update(bContext *C, PointerRNA *ptr)
 {
 	Tex *tex = (Tex *)ptr->data;
 	
-	tex->use_nodes = v;
-	tex->type = 0;
+	if (tex->use_nodes) {
+		tex->type = 0;
+		
+		if (tex->nodetree == NULL)
+			ED_node_texture_default(C, tex);
+	}
 	
-	if (v && tex->nodetree == NULL)
-		ED_node_texture_default(tex);
+	rna_Texture_nodes_update(CTX_data_main(C), CTX_data_scene(C), ptr);
 }
 
 static void rna_ImageTexture_mipmap_set(PointerRNA *ptr, int value)
@@ -2021,9 +2025,9 @@ static void rna_def_texture(BlenderRNA *brna)
 	/* nodetree */
 	prop = RNA_def_property(srna, "use_nodes", PROP_BOOLEAN, PROP_NONE);
 	RNA_def_property_boolean_sdna(prop, NULL, "use_nodes", 1);
-	RNA_def_property_boolean_funcs(prop, NULL, "rna_Texture_use_nodes_set");
+	RNA_def_property_flag(prop, PROP_CONTEXT_UPDATE);
 	RNA_def_property_ui_text(prop, "Use Nodes", "Make this a node-based texture");
-	RNA_def_property_update(prop, 0, "rna_Texture_nodes_update");
+	RNA_def_property_update(prop, 0, "rna_Texture_use_nodes_update");
 	
 	prop = RNA_def_property(srna, "node_tree", PROP_POINTER, PROP_NONE);
 	RNA_def_property_pointer_sdna(prop, NULL, "nodetree");
diff --git a/source/blender/makesrna/intern/rna_ui_api.c b/source/blender/makesrna/intern/rna_ui_api.c
index 0204fa5367b..b2f17bfed8b 100644
--- a/source/blender/makesrna/intern/rna_ui_api.c
+++ b/source/blender/makesrna/intern/rna_ui_api.c
@@ -419,6 +419,8 @@ void RNA_api_ui_layout(StructRNA *srna)
 		{0, NULL, 0, NULL, NULL}
 	};
 
+	static float node_socket_color_default[] = { 0.0f, 0.0f, 0.0f, 1.0f };
+
 	/* simple layout specifiers */
 	func = RNA_def_function(srna, "row", "uiLayoutRow");
 	parm = RNA_def_pointer(func, "layout", "UILayout", "", "Sub-layout to put items in");
@@ -829,6 +831,14 @@ void RNA_api_ui_layout(StructRNA *srna)
 	parm = RNA_def_pointer(func, "item", "KeyMapItem", "", "");
 	RNA_def_property_flag(parm, PROP_REQUIRED | PROP_RNAPTR | PROP_NEVER_NULL);
 
+	func = RNA_def_function(srna, "template_component_menu", "uiTemplateComponentMenu");
+	RNA_def_function_ui_description(func, "Item. Display expanded property in a popup menu");
+	parm = RNA_def_pointer(func, "data", "AnyType", "", "Data from which to take property");
+	RNA_def_property_flag(parm, PROP_REQUIRED | PROP_RNAPTR);
+	parm = RNA_def_string(func, "property", "", 0, "", "Identifier of property in data");
+	RNA_def_property_flag(parm, PROP_REQUIRED);
+	RNA_def_string(func, "name", "", 0, "", "");
+
 	func = RNA_def_function(srna, "introspect", "uiLayoutIntrospect");
 	parm = RNA_def_string(func, "string", "", 1024 * 1024, "Descr", "DESCR");
 	RNA_def_function_return(func, parm);
@@ -843,6 +853,12 @@ void RNA_api_ui_layout(StructRNA *srna)
 	RNA_def_function_flag(func, FUNC_USE_CONTEXT);
 	api_ui_item_rna_common(func);
 	/* RNA_def_boolean(func, "show_global_settings", 0, "", "Show widgets to control global color management settings"); */
+
+	/* node socket icon */
+	func = RNA_def_function(srna, "template_node_socket", "uiTemplateNodeSocket");
+	RNA_def_function_ui_description(func, "Node Socket Icon");
+	RNA_def_function_flag(func, FUNC_USE_CONTEXT);
+	RNA_def_float_array(func, "color", 4, node_socket_color_default, 0.0f, 1.0f, "Color", "", 0.0f, 1.0f);
 }
 
 #endif
diff --git a/source/blender/makesrna/intern/rna_userdef.c b/source/blender/makesrna/intern/rna_userdef.c
index c7b5d30e4d1..2a4a73b91c1 100644
--- a/source/blender/makesrna/intern/rna_userdef.c
+++ b/source/blender/makesrna/intern/rna_userdef.c
@@ -1898,6 +1898,12 @@ static void rna_def_userdef_theme_space_node(BlenderRNA *brna)
 	RNA_def_property_ui_text(prop, "Group Node", "");
 	RNA_def_property_update(prop, 0, "rna_userdef_update");
 
+	prop = RNA_def_property(srna, "group_socket_node", PROP_FLOAT, PROP_COLOR_GAMMA);
+	RNA_def_property_float_sdna(prop, NULL, "console_output");
+	RNA_def_property_array(prop, 3);
+	RNA_def_property_ui_text(prop, "Group Socket Node", "");
+	RNA_def_property_update(prop, 0, "rna_userdef_update");
+
 	prop = RNA_def_property(srna, "frame_node", PROP_FLOAT, PROP_COLOR_GAMMA);
 	RNA_def_property_float_sdna(prop, NULL, "movie");
 	RNA_def_property_array(prop, 4);
diff --git a/source/blender/makesrna/intern/rna_world.c b/source/blender/makesrna/intern/rna_world.c
index 02a04d36c23..b689a82c231 100644
--- a/source/blender/makesrna/intern/rna_world.c
+++ b/source/blender/makesrna/intern/rna_world.c
@@ -42,6 +42,7 @@
 
 #include "MEM_guardedalloc.h"
 
+#include "BKE_context.h"
 #include "BKE_depsgraph.h"
 #include "BKE_main.h"
 #include "BKE_texture.h"
@@ -121,14 +122,14 @@ static void rna_World_stars_update(Main *UNUSED(bmain), Scene *UNUSED(scene), Po
 	WM_main_add_notifier(NC_WORLD | ND_WORLD_STARS, wo);
 }
 
-static void rna_World_use_nodes_update(Main *bmain, Scene *scene, PointerRNA *ptr)
+static void rna_World_use_nodes_update(bContext *C, PointerRNA *ptr)
 {
 	World *wrld = (World *)ptr->data;
 
 	if (wrld->use_nodes && wrld->nodetree == NULL)
-		ED_node_shader_default(scene, &wrld->id);
+		ED_node_shader_default(C, &wrld->id);
 	
-	rna_World_update(bmain, scene, ptr);
+	rna_World_update(CTX_data_main(C), CTX_data_scene(C), ptr);
 }
 
 #else
@@ -581,6 +582,7 @@ void RNA_def_world(BlenderRNA *brna)
 	prop = RNA_def_property(srna, "use_nodes", PROP_BOOLEAN, PROP_NONE);
 	RNA_def_property_boolean_sdna(prop, NULL, "use_nodes", 1);
 	RNA_def_property_clear_flag(prop, PROP_ANIMATABLE);
+	RNA_def_property_flag(prop, PROP_CONTEXT_UPDATE);
 	RNA_def_property_ui_text(prop, "Use Nodes", "Use shader nodes to render the world");
 	RNA_def_property_update(prop, 0, "rna_World_use_nodes_update");