support for string parameters in OSL nodes

for now subtype is not defined, but once we start parsing the metadata we can set texture inputs as FILEPATH
also, it takes relative strings and convert to absolute for all strings (which is arguably a good solution, but
should work for now)

1 files changed, 24 insertions, 1 deletions

diff --git a/source/blender/makesrna/intern/rna_nodetree.c b/source/blender/makesrna/intern/rna_nodetree.c
index 0a7e124f591..91b2b6ad259 100644
--- a/source/blender/makesrna/intern/rna_nodetree.c
+++ b/source/blender/makesrna/intern/rna_nodetree.c
@@ -92,6 +92,7 @@ EnumPropertyItem node_socket_type_items[] = {
 	{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}
 };
 
@@ -192,6 +193,10 @@ EnumPropertyItem prop_wave_items[] = {
     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) \
@@ -204,7 +209,8 @@ EnumPropertyItem prop_wave_items[] = {
 #define NODE_DEFINE_SUBTYPES \
     NODE_DEFINE_SUBTYPES_INT \
     NODE_DEFINE_SUBTYPES_FLOAT \
-    NODE_DEFINE_SUBTYPES_VECTOR
+    NODE_DEFINE_SUBTYPES_STRING \
+    NODE_DEFINE_SUBTYPES_VECTOR \
 
 #ifdef RNA_RUNTIME
 
@@ -292,6 +298,9 @@ static StructRNA *rna_NodeSocket_refine(PointerRNA *ptr)
 			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:
@@ -4533,6 +4542,20 @@ static void rna_def_node_socket_subtype(BlenderRNA *brna, int type, int subtype,
 			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) */