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, 34 insertions, 0 deletions

diff --git a/source/blender/nodes/intern/node_socket.c b/source/blender/nodes/intern/node_socket.c
index 8e49484d1eb..0335d295fba 100644
--- a/source/blender/nodes/intern/node_socket.c
+++ b/source/blender/nodes/intern/node_socket.c
@@ -41,6 +41,7 @@
 #include "BLI_listbase.h"
 #include "BLI_math.h"
 #include "BLI_utildefines.h"
+#include "BLI_string.h"
 
 #include "BKE_DerivedMesh.h"
 #include "BKE_node.h"
@@ -157,6 +158,20 @@ static bNodeSocketType node_socket_type_mesh = {
 	/* buttonfunc */		NULL,
 };
 
+/****************** STRING ******************/
+
+static bNodeSocketType node_socket_type_string = {
+	/* type */				SOCK_STRING,
+	/* ui_name */			"String",
+	/* ui_description */	"String",
+	/* ui_icon */			0,
+	/* ui_color */			{255, 255, 255, 255},
+	
+	/* value_structname */	"bNodeSocketValueString",
+	/* value_structsize */	sizeof(bNodeSocketValueString),
+	
+	/* buttonfunc */		NULL,
+};
 
 void node_socket_type_init(bNodeSocketType *types[])
 {
@@ -169,6 +184,7 @@ void node_socket_type_init(bNodeSocketType *types[])
 	INIT_TYPE(boolean);
 	INIT_TYPE(shader);
 	INIT_TYPE(mesh);
+	INIT_TYPE(string);
 	
 	#undef INIT_TYPE
 }
@@ -218,6 +234,9 @@ void node_socket_init_default_value(int type, void *default_value)
 	case SOCK_MESH:
 		node_socket_set_default_value_mesh(default_value);
 		break;
+	case SOCK_STRING:
+		node_socket_set_default_value_string(default_value, PROP_NONE, (char *)"");
+		break;
 	}
 }
 
@@ -265,6 +284,13 @@ void node_socket_set_default_value_rgba(void *default_value, float r, float g, f
 	val->value[3] = a;
 }
 
+void node_socket_set_default_value_string(void *default_value, PropertySubType subtype, const char *value)
+{
+	bNodeSocketValueString *val = default_value;
+	val->subtype = subtype;
+	BLI_strncpy(val->value, value, 1024);//FILE_MAX
+}
+
 void node_socket_set_default_value_shader(void *UNUSED(default_value))
 {
 }
@@ -282,12 +308,14 @@ void node_socket_copy_default_value(int type, void *to_default_value, void *from
 	bNodeSocketValueBoolean *frombool= (bNodeSocketValueBoolean*)from_default_value;
 	bNodeSocketValueVector *fromvector= (bNodeSocketValueVector*)from_default_value;
 	bNodeSocketValueRGBA *fromrgba= (bNodeSocketValueRGBA*)from_default_value;
+	bNodeSocketValueString *fromstring= (bNodeSocketValueString*)from_default_value;
 
 	bNodeSocketValueFloat *tofloat= (bNodeSocketValueFloat*)to_default_value;
 	bNodeSocketValueInt *toint= (bNodeSocketValueInt*)to_default_value;
 	bNodeSocketValueBoolean *tobool= (bNodeSocketValueBoolean*)to_default_value;
 	bNodeSocketValueVector *tovector= (bNodeSocketValueVector*)to_default_value;
 	bNodeSocketValueRGBA *torgba= (bNodeSocketValueRGBA*)to_default_value;
+	bNodeSocketValueString *tostring= (bNodeSocketValueString*)to_default_value;
 
 	switch (type) {
 	case SOCK_FLOAT:
@@ -305,6 +333,9 @@ void node_socket_copy_default_value(int type, void *to_default_value, void *from
 	case SOCK_RGBA:
 		*torgba = *fromrgba;
 		break;
+	case SOCK_STRING:
+		*tostring = *fromstring;
+		break;
 	}
 }
 
@@ -470,6 +501,9 @@ struct bNodeSocket *node_add_input_from_template(struct bNodeTree *ntree, struct
 	case SOCK_MESH:
 		node_socket_set_default_value_mesh(sock->default_value);
 		break;
+	case SOCK_STRING:
+		node_socket_set_default_value_string(sock->default_value, stemp->subtype, (char *)"");
+		break;
 	}
 	
 	return sock;