Made texture nodes accessible in the interface.

* Exposed Tex.use_nodes, Tex.nodetree, MTex.which_output in RNA
* Added node controls to texture buttons (Use Nodes and Use Output)
* Made new texture outputs have unique names by default, though unique names still aren't required.

Note: The preview window in the texture buttons only takes which_output into account when in "material" mode, and in the material half of "both" mode; the plain texture display ignores the user's output choice.

This is because ED_preview_draw draws a Tex* and not an MTex* -- still some work to do here.

3 files changed, 147 insertions, 8 deletions

diff --git a/source/blender/makesrna/intern/rna_texture.c b/source/blender/makesrna/intern/rna_texture.c
index ccb5e5b2f95..76cb9986306 100644
--- a/source/blender/makesrna/intern/rna_texture.c
+++ b/source/blender/makesrna/intern/rna_texture.c
@@ -36,6 +36,9 @@
 #include "DNA_material_types.h"
 #include "DNA_texture_types.h"
 #include "DNA_world_types.h"
+#include "DNA_node_types.h"
+
+#include "BKE_node.h"
 
 #include "WM_types.h"
 
@@ -107,6 +110,43 @@ static void rna_TextureSlot_name_get(PointerRNA *ptr, char *str)
 		strcpy(str, "");
 }
 
+static EnumPropertyItem *rna_TextureSlot_output_node_itemf(bContext *C, PointerRNA *ptr, int *free)
+{
+	MTex *mtex= ptr->data;
+	Tex *tex= mtex->tex;
+	EnumPropertyItem *item= NULL;
+	int totitem= 0;
+	
+	if(tex)
+	{
+		bNodeTree *ntree= tex->nodetree;
+		if(ntree)
+		{
+			EnumPropertyItem tmp= {0, "", 0, "", ""};
+			bNode *node;
+			
+			tmp.value = 0;
+			tmp.name = "Not Specified";
+			tmp.identifier = "NOT_SPECIFIED";
+			RNA_enum_item_add(&item, &totitem, &tmp);
+			
+			for(node= ntree->nodes.first; node; node= node->next) {
+				if(node->type == TEX_NODE_OUTPUT) {
+					tmp.value= node->custom1;
+					tmp.name= ((TexNodeOutput*)node->storage)->name;
+					tmp.identifier = tmp.name;
+					RNA_enum_item_add(&item, &totitem, &tmp);
+				}
+			}
+		}
+	}
+	
+	RNA_enum_item_end(&item, &totitem);
+	
+	*free = 1;
+	return item;
+}
+
 static void rna_Texture_use_color_ramp_set(PointerRNA *ptr, int value)
 {
 	Tex *tex= (Tex*)ptr->data;
@@ -118,6 +158,18 @@ static void rna_Texture_use_color_ramp_set(PointerRNA *ptr, int value)
 		tex->coba= add_colorband(0);
 }
 
+void rna_Texture_use_nodes_set(PointerRNA *ptr, int v)
+{
+	Tex *tex= (Tex*)ptr->data;
+	
+	tex->use_nodes = v;
+	tex->type = 0;
+	
+	if(v && tex->nodetree==NULL) {
+		node_texture_default(tex);
+	}
+}
+
 static void rna_ImageTexture_mipmap_set(PointerRNA *ptr, int value)
 {
 	Tex *tex= (Tex*)ptr->data;
@@ -287,6 +339,10 @@ static void rna_def_mtex(BlenderRNA *brna)
 		{MTEX_MAP_MODE_3D, "3D", 0, "3D", ""},
 		{0, NULL, 0, NULL, NULL}};
 
+	static EnumPropertyItem output_node_items[] = {
+		{0, "DUMMY", 0, "Dummy", ""},
+		{0, NULL, 0, NULL, NULL}};
+		
 	srna= RNA_def_struct(brna, "TextureSlot", NULL);
 	RNA_def_struct_sdna(srna, "MTex");
 	RNA_def_struct_ui_text(srna, "Texture Slot", "Texture slot defining the mapping and influence of a texture.");
@@ -373,6 +429,13 @@ static void rna_def_mtex(BlenderRNA *brna)
 	RNA_def_property_ui_range(prop, 0, 5, 10, 3);
 	RNA_def_property_ui_text(prop, "Normal Factor", "Amount texture affects normal values.");
 	RNA_def_property_update(prop, NC_TEXTURE, NULL);
+	
+	prop= RNA_def_property(srna, "output_node", PROP_ENUM, PROP_NONE);
+	RNA_def_property_enum_sdna(prop, NULL, "which_output");
+	RNA_def_property_enum_items(prop, output_node_items);
+	RNA_def_property_enum_funcs(prop, NULL, NULL, "rna_TextureSlot_output_node_itemf");
+	RNA_def_property_ui_text(prop, "Output Node", "Which output node to use, for node-based textures.");
+	RNA_def_property_update(prop, NC_TEXTURE, NULL);
 }
 
 static void rna_def_filter_size_common(StructRNA *srna) 
@@ -1285,7 +1348,19 @@ static void rna_def_texture(BlenderRNA *brna)
 	RNA_def_property_range(prop, 0, 2);
 	RNA_def_property_ui_text(prop, "RGB Factor", "");
 	RNA_def_property_update(prop, NC_TEXTURE, NULL);
-
+	
+	/* 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_ui_text(prop, "Use Nodes", "Make this a node-based texture");
+	RNA_def_property_update(prop, NC_TEXTURE, NULL);
+	
+	prop= RNA_def_property(srna, "node_tree", PROP_POINTER, PROP_NONE);
+	RNA_def_property_pointer_sdna(prop, NULL, "nodetree");
+	RNA_def_property_ui_text(prop, "Node Tree", "Node tree for node-based textures");
+	RNA_def_property_update(prop, NC_TEXTURE, NULL);
+	
 	rna_def_animdata_common(srna);
 
 	/* specific types */
diff --git a/source/blender/nodes/intern/TEX_nodes/TEX_output.c b/source/blender/nodes/intern/TEX_nodes/TEX_output.c
index 060ea8d7e67..d0538d11900 100644
--- a/source/blender/nodes/intern/TEX_nodes/TEX_output.c
+++ b/source/blender/nodes/intern/TEX_nodes/TEX_output.c
@@ -64,11 +64,64 @@ static void exec(void *data, bNode *node, bNodeStack **in, bNodeStack **out)
 	}
 }
 
-static void init(bNode* node)
+static void unique_name(bNode *node)
 {
-   TexNodeOutput *tno = MEM_callocN(sizeof(TexNodeOutput), "TEX_output");
-   strcpy(tno->name, "Default");
-   node->storage= tno;
+	TexNodeOutput *tno = (TexNodeOutput *)node->storage;
+	char *new_name = 0;
+	int new_len;
+	int suffix;
+	bNode *i;
+	char *name = tno->name;
+	
+	i = node;
+	while(i->prev) i = i->prev;
+	for(; i; i=i->next) {
+		if(
+			i == node ||
+			i->type != TEX_NODE_OUTPUT ||
+			strcmp(name, ((TexNodeOutput*)(i->storage))->name)
+		)
+			continue;
+		
+		if(!new_name) {
+			int len = strlen(name);
+			if(len >= 4 && sscanf(name + len - 4, ".%03d", &suffix) == 1) {
+				new_len = len;
+			} else {
+				suffix = 0;
+				new_len = len + 4;
+				if(new_len > 31)
+					new_len = 31;
+			}
+			
+			new_name = malloc(new_len + 1);
+			strcpy(new_name, name);
+			name = new_name;
+		}
+		sprintf(new_name + new_len - 4, ".%03d", ++suffix);
+	}
+	
+	if(new_name) {
+		strcpy(tno->name, new_name);
+		free(new_name);
+	}
+}
+
+static void init(bNode *node)
+{
+	TexNodeOutput *tno = MEM_callocN(sizeof(TexNodeOutput), "TEX_output");
+	node->storage= tno;
+	
+	strcpy(tno->name, "Default");
+	unique_name(node);
+	ntreeTexAssignIndex(0, node);
+}
+
+static void copy(bNode *orig, bNode *new)
+{
+	node_copy_standard_storage(orig, new);
+	unique_name(new);
+	ntreeTexAssignIndex(0, new);
 }
 
 
@@ -85,6 +138,6 @@ bNodeType tex_node_output= {
 	/* butfunc         */  NULL,
 	/* initfunc        */  init,
 	/* freestoragefunc */  node_free_standard_storage,
-	/* copystoragefunc */  node_copy_standard_storage,  
+	/* copystoragefunc */  copy,  
 	/* id              */  NULL
 };
diff --git a/source/blender/nodes/intern/TEX_util.c b/source/blender/nodes/intern/TEX_util.c
index 867e754f960..d25decd4111 100644
--- a/source/blender/nodes/intern/TEX_util.c
+++ b/source/blender/nodes/intern/TEX_util.c
@@ -197,6 +197,10 @@ void ntreeTexExecTree(bNodeTree *nodes, TexResult *texres, float *coord, char do
 	TexResult dummy_texres;
 	TexCallData data;
 	
+	/* 0 means don't care, so just use first */
+	if(which_output == 0)
+		which_output = 1;
+	
 	if(!texres) texres = &dummy_texres;
 	data.coord = coord;
 	data.target = texres;
@@ -270,10 +274,17 @@ char* ntreeTexOutputMenu(bNodeTree *ntree)
 void ntreeTexAssignIndex(struct bNodeTree *ntree, struct bNode *node)
 {
 	bNode *tnode;
-	int index = 0;
+	int index = 1;
+	
+	if(ntree) 
+		tnode = ntree->nodes.first;
+	else {
+		tnode = node;
+		while(tnode->prev) tnode = tnode->prev;
+	}
 	
 	check_index:
-	for(tnode= ntree->nodes.first; tnode; tnode= tnode->next)
+	for(; tnode; tnode= tnode->next)
 		if(tnode->type == TEX_NODE_OUTPUT && tnode != node)
 			if(tnode->custom1 == index) {
 				index ++;