Commit: 9e152f919f2f86cbe3530c6adc34373ebc703904
Author: Miguel Porces
Date:   Sat Mar 16 18:48:22 2019 +0100
Branches: master
https://developer.blender.org/rB9e152f919f2f86cbe3530c6adc34373ebc703904

Python API: add Python-defined node groups for shaders and compositing.

This was already supported for Cycles shader nodes, but now also works for
Eevee and compositing nodes. Instead of a generic NodeCustomGroup, now
there is ShaderNodeCustomGroup and CompositorNodeCustomGroup that can be
subclassed and registered.

Differential Revision: https://developer.blender.org/D4370

===================================================================

M       intern/cycles/blender/blender_shader.cpp
M       release/scripts/startup/nodeitems_builtins.py
M       source/blender/blenkernel/BKE_node.h
M       source/blender/blenkernel/intern/material.c
M       source/blender/blenkernel/intern/node.c
M       source/blender/compositor/intern/COM_NodeGraph.cpp
M       source/blender/depsgraph/intern/builder/deg_builder_nodes.cc
M       source/blender/depsgraph/intern/builder/deg_builder_relations.cc
M       source/blender/editors/space_node/node_relationships.c
M       source/blender/editors/space_node/node_templates.c
M       source/blender/makesrna/intern/rna_nodetree.c
M       source/blender/nodes/NOD_composite.h
M       source/blender/nodes/NOD_shader.h
M       source/blender/nodes/composite/nodes/node_composite_common.c
M       source/blender/nodes/shader/node_shader_tree.c
M       source/blender/nodes/shader/nodes/node_shader_common.c
M       source/blender/render/intern/source/pipeline.c

===================================================================

diff --git a/intern/cycles/blender/blender_shader.cpp 
b/intern/cycles/blender/blender_shader.cpp
index b04a0394141..44ff29d4bf8 100644
--- a/intern/cycles/blender/blender_shader.cpp
+++ b/intern/cycles/blender/blender_shader.cpp
@@ -1050,13 +1050,18 @@ static void add_nodes(Scene *scene,
                                graph->add(proxy);
                        }
                }
-               else if(b_node->is_a(&RNA_ShaderNodeGroup) || 
b_node->is_a(&RNA_NodeCustomGroup)) {
+               else if(b_node->is_a(&RNA_ShaderNodeGroup) ||
+                       b_node->is_a(&RNA_NodeCustomGroup) ||
+                       b_node->is_a(&RNA_ShaderNodeCustomGroup)) {
 
                        BL::ShaderNodeTree b_group_ntree(PointerRNA_NULL);
                        if(b_node->is_a(&RNA_ShaderNodeGroup))
                                b_group_ntree = 
BL::ShaderNodeTree(((BL::NodeGroup)(*b_node)).node_tree());
-                       else
+                       else if (b_node->is_a(&RNA_NodeCustomGroup))
                                b_group_ntree = 
BL::ShaderNodeTree(((BL::NodeCustomGroup)(*b_node)).node_tree());
+                       else
+                               b_group_ntree = 
BL::ShaderNodeTree(((BL::ShaderNodeCustomGroup)(*b_node)).node_tree());
+
                        ProxyMap group_proxy_input_map, group_proxy_output_map;
 
                        /* Add a proxy node for each socket
diff --git a/release/scripts/startup/nodeitems_builtins.py 
b/release/scripts/startup/nodeitems_builtins.py
index 99df0167557..60772062dcf 100644
--- a/release/scripts/startup/nodeitems_builtins.py
+++ b/release/scripts/startup/nodeitems_builtins.py
@@ -99,7 +99,9 @@ def node_group_items(context):
         # filter out recursive groups
         if contains_group(group, ntree):
             continue
-
+        # filter out hidden nodetrees
+        if group.name.startswith('.'):
+            continue
         yield NodeItem(node_tree_group_type[group.bl_idname],
                        group.name,
                        {"node_tree": "bpy.data.node_groups[%r]" % group.name})
diff --git a/source/blender/blenkernel/BKE_node.h 
b/source/blender/blenkernel/BKE_node.h
index 951962d26f1..80b0f9a023f 100644
--- a/source/blender/blenkernel/BKE_node.h
+++ b/source/blender/blenkernel/BKE_node.h
@@ -618,6 +618,7 @@ bool BKE_node_is_connected_to_output(struct bNodeTree 
*ntree, struct bNode *node
 #define NODE_REROUTE   6
 #define NODE_GROUP_INPUT       7
 #define NODE_GROUP_OUTPUT      8
+#define NODE_CUSTOM_GROUP      9
 
 void BKE_node_tree_unlink_id(ID *id, struct bNodeTree *ntree);
 
diff --git a/source/blender/blenkernel/intern/material.c 
b/source/blender/blenkernel/intern/material.c
index 90b25e8fd49..88a96ff098e 100644
--- a/source/blender/blenkernel/intern/material.c
+++ b/source/blender/blenkernel/intern/material.c
@@ -1038,7 +1038,7 @@ static int count_texture_nodes_recursive(bNodeTree 
*nodetree)
                if (node->typeinfo->nclass == NODE_CLASS_TEXTURE && 
node->typeinfo->type == SH_NODE_TEX_IMAGE && node->id) {
                        tex_nodes++;
                }
-               else if (node->type == NODE_GROUP && node->id) {
+               else if (ELEM(node->type, NODE_GROUP, NODE_CUSTOM_GROUP) && 
node->id) {
                        /* recurse into the node group and see if it contains 
any textures */
                        tex_nodes += count_texture_nodes_recursive((bNodeTree 
*)node->id);
                }
@@ -1073,7 +1073,7 @@ static void fill_texpaint_slots_recursive(bNodeTree 
*nodetree, bNode *active_nod
                        }
                        (*index)++;
                }
-               else if (node->type == NODE_GROUP && node->id) {
+               else if (ELEM(node->type, NODE_GROUP, NODE_CUSTOM_GROUP) && 
node->id) {
                        /* recurse into the node group and see if it contains 
any textures */
                        fill_texpaint_slots_recursive((bNodeTree *)node->id, 
active_node, ma, index);
                }
diff --git a/source/blender/blenkernel/intern/node.c 
b/source/blender/blenkernel/intern/node.c
index 57dcbcbebf8..d4dd74a0e2d 100644
--- a/source/blender/blenkernel/intern/node.c
+++ b/source/blender/blenkernel/intern/node.c
@@ -1804,7 +1804,7 @@ static void free_localized_node_groups(bNodeTree *ntree)
                return;
 
        for (node = ntree->nodes.first; node; node = node->next) {
-               if (node->type == NODE_GROUP && node->id) {
+               if ((ELEM(node->type, NODE_GROUP, NODE_CUSTOM_GROUP)) && 
node->id) {
                        bNodeTree *ngroup = (bNodeTree *)node->id;
                        ntreeFreeTree(ngroup);
                        MEM_freeN(ngroup);
@@ -2046,7 +2046,7 @@ bNodeTree *ntreeLocalize(bNodeTree *ntree)
                         LIB_ID_COPY_NO_ANIMDATA));
 
                for (node = ltree->nodes.first; node; node = node->next) {
-                       if (node->type == NODE_GROUP && node->id) {
+                       if ((ELEM(node->type, NODE_GROUP, NODE_CUSTOM_GROUP)) 
&& node->id) {
                                node->id = (ID *)ntreeLocalize((bNodeTree 
*)node->id);
                        }
                }
@@ -2369,7 +2369,7 @@ bool ntreeHasTree(const bNodeTree *ntree, const bNodeTree 
*lookup)
                return true;
 
        for (node = ntree->nodes.first; node; node = node->next)
-               if (node->type == NODE_GROUP && node->id)
+               if (ELEM(node->type, NODE_GROUP, NODE_CUSTOM_GROUP) && node->id)
                        if (ntreeHasTree((bNodeTree *)node->id, lookup))
                                return true;
 
diff --git a/source/blender/compositor/intern/COM_NodeGraph.cpp 
b/source/blender/compositor/intern/COM_NodeGraph.cpp
index ba0d225fdd7..f23b186416d 100644
--- a/source/blender/compositor/intern/COM_NodeGraph.cpp
+++ b/source/blender/compositor/intern/COM_NodeGraph.cpp
@@ -128,7 +128,7 @@ void NodeGraph::add_bNode(const CompositorContext &context, 
bNodeTree *b_ntree,
        }
 
        /* special node types */
-       if (b_node->type == NODE_GROUP) {
+       if (ELEM(b_node->type, NODE_GROUP, NODE_CUSTOM_GROUP)) {
                add_proxies_group(context, b_node, key);
        }
        else if (b_node->type == NODE_REROUTE) {
diff --git a/source/blender/depsgraph/intern/builder/deg_builder_nodes.cc 
b/source/blender/depsgraph/intern/builder/deg_builder_nodes.cc
index ecb2dad292a..09a79db2dbd 100644
--- a/source/blender/depsgraph/intern/builder/deg_builder_nodes.cc
+++ b/source/blender/depsgraph/intern/builder/deg_builder_nodes.cc
@@ -1505,7 +1505,7 @@ void DepsgraphNodeBuilder::build_nodetree(bNodeTree 
*ntree)
                else if (id_type == ID_MC) {
                        build_movieclip((MovieClip *)id);
                }
-               else if (bnode->type == NODE_GROUP) {
+               else if (ELEM(bnode->type, NODE_GROUP, NODE_CUSTOM_GROUP)) {
                        bNodeTree *group_ntree = (bNodeTree *)id;
                        build_nodetree(group_ntree);
                }
diff --git a/source/blender/depsgraph/intern/builder/deg_builder_relations.cc 
b/source/blender/depsgraph/intern/builder/deg_builder_relations.cc
index ef5ec6a9949..3c70cdd5bfd 100644
--- a/source/blender/depsgraph/intern/builder/deg_builder_relations.cc
+++ b/source/blender/depsgraph/intern/builder/deg_builder_relations.cc
@@ -2420,7 +2420,7 @@ void DepsgraphRelationBuilder::build_nodetree(bNodeTree 
*ntree)
                else if (id_type == ID_MC) {
                        build_movieclip((MovieClip *)id);
                }
-               else if (bnode->type == NODE_GROUP) {
+               else if (ELEM(bnode->type, NODE_GROUP, NODE_CUSTOM_GROUP)) {
                        bNodeTree *group_ntree = (bNodeTree *)id;
                        build_nodetree(group_ntree);
                        ComponentKey group_shading_key(&group_ntree->id,
diff --git a/source/blender/editors/space_node/node_relationships.c 
b/source/blender/editors/space_node/node_relationships.c
index e0fce2a5367..d81c764af81 100644
--- a/source/blender/editors/space_node/node_relationships.c
+++ b/source/blender/editors/space_node/node_relationships.c
@@ -124,7 +124,7 @@ static bool node_group_has_output_dfs(bNode *node)
 
 static bool node_group_has_output(Main *bmain, bNode *node)
 {
-       BLI_assert(node->type == NODE_GROUP);
+       BLI_assert(ELEM(node->type, NODE_GROUP, NODE_CUSTOM_GROUP));
        bNodeTree *ntree = (bNodeTree *)node->id;
        if (ntree == NULL) {
                return false;
@@ -153,7 +153,7 @@ bool node_connected_to_output(Main *bmain, bNodeTree 
*ntree, bNode *node)
                 * We could make check more grained here by taking which socket 
the node
                 * is connected to and so eventually.
                 */
-               if (current_node->type == NODE_GROUP) {
+               if (ELEM(current_node->type, NODE_GROUP, NODE_CUSTOM_GROUP)) {
                        if (current_node->id != NULL &&
                            ntree_has_drivers((bNodeTree *)current_node->id))
                        {
diff --git a/source/blender/editors/space_node/node_templates.c 
b/source/blender/editors/space_node/node_templates.c
index b3edf98c470..10cb3ba8d99 100644
--- a/source/blender/editors/space_node/node_templates.c
+++ b/source/blender/editors/space_node/node_templates.c
@@ -68,7 +68,7 @@ typedef struct NodeLinkItem {
  */
 static bool node_link_item_compare(bNode *node, NodeLinkItem *item)
 {
-       if (node->type == NODE_GROUP) {
+       if (ELEM(node->type, NODE_GROUP, NODE_CUSTOM_GROUP)) {
                return (node->id == (ID *)item->ngroup);
        }
        else
@@ -77,7 +77,7 @@ static bool node_link_item_compare(bNode *node, NodeLinkItem 
*item)
 
 static void node_link_item_apply(Main *bmain, bNode *node, NodeLinkItem *item)
 {
-       if (node->type == NODE_GROUP) {
+       if (ELEM(node->type, NODE_GROUP, NODE_CUSTOM_GROUP)) {
                node->id = (ID *)item->ngroup;
                ntreeUpdateTree(bmain, item->ngroup);
        }
diff --git a/source/blender/makesrna/intern/rna_nodetree.c 
b/source/blender/makesrna/intern/rna_nodetree.c
index 74f47f76dc3..591cabac98f 100644
--- a/source/blender/makesrna/intern/rna_nodetree.c
+++ b/source/blender/makesrna/intern/rna_nodetree.c
@@ -192,6 +192,8 @@ static const EnumPropertyItem 
prop_shader_output_target_items[] = {
 
 #include "NOD_common.h"
 #include "NOD_socket.h"
+#include "NOD_shader.h"
+#include "NOD_composite.h"
 
 #include "RE_engine.h"
 #include "RE_pipeline.h"
@@ -451,6 +453,13 @@ static const EnumPropertyItem 
*rna_node_static_type_itemf(bContext *UNUSED(C), P
        tmp.icon = ICON_NONE;
        RNA_enum_item_add(&item, &totitem, &tmp);
 
+       tmp.value = NODE_CUSTOM_GROUP;
+       tmp.identifier = "CUSTOM GROUP";
+       tmp.name = "CustomGroup";
+       tmp.description = "Custom Group Node";
+       tmp.icon = ICON_NONE;
+       RNA_enum_item_add(&item, &totitem, &tmp);
+
        tmp.value = NODE_UNDEFINED;
        tmp.identifier = "UNDEFINED";
        tmp.name = "UNDEFINED";
@@ -2460,6 +2469,50 @@ static StructRNA *rna_NodeCustomGroup_register(
        return nt->ext.srna;
 }
 
+static StructRNA *rna_ShaderNodeCustomGroup_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_ShaderNodeCustomGroup, data, identifier, validate, call, free);
+
+       if (!nt)
+               return NULL;
+
+       nt->verifyfunc = node_group_verify;
+       nt->type = NODE_CUSTOM_GROUP;
+
+       register_node_type_sh_custom_group(nt);
+
+       nodeRegisterType(nt);
+
+       WM_main_add_notifier(NC_NODE | NA_EDITED, NULL);
+


@@ Diff output truncated at 10240 characters. @@

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