From 9c35147666898c5272438636bfc515d749f901b1 Mon Sep 17 00:00:00 2001
From: Sergey Sharybin <sergey.vfx@gmail.com>
Date: Mon, 30 Jul 2012 16:39:39 +0000
Subject: [PATCH] Fixed own regression introduced in recent compositor commit

MuteNode could be used as a replacement for other nodes when
using fast calculation or when using unknown node from blender.

Should work properly now.
---
 .../blender/compositor/nodes/COM_MuteNode.cpp | 21 ++++++++++++++++---
 .../blender/compositor/nodes/COM_MuteNode.h   |  1 +
 2 files changed, 19 insertions(+), 3 deletions(-)

diff --git a/source/blender/compositor/nodes/COM_MuteNode.cpp b/source/blender/compositor/nodes/COM_MuteNode.cpp
index 7b9dcf686fc..2c96473a556 100644
--- a/source/blender/compositor/nodes/COM_MuteNode.cpp
+++ b/source/blender/compositor/nodes/COM_MuteNode.cpp
@@ -47,7 +47,12 @@ void MuteNode::reconnect(ExecutionSystem *graph, OutputSocket *output)
 			}
 		}
 	}
-	
+
+	createDefaultOutput(graph, output);
+}
+
+void MuteNode::createDefaultOutput(ExecutionSystem *graph, OutputSocket *output)
+{
 	NodeOperation *operation = NULL;
 	switch (output->getDataType()) {
 		case COM_DT_VALUE:
@@ -100,7 +105,10 @@ void MuteNode::convertToOperations(ExecutionSystem *graph, CompositorContext *co
 	bNode *editorNode = this->getbNode();
 	vector<OutputSocket *> &outputsockets = this->getOutputSockets();
 
-	if (editorNode->typeinfo->internal_connect) {
+	/* mute node is also used for unknown nodes and couple of nodes in fast mode
+	 * can't use generic routines in that case
+	 */
+	if ((editorNode->flag & NODE_MUTED) && editorNode->typeinfo->internal_connect) {
 		vector<InputSocket *> &inputsockets = this->getInputSockets();
 		bNodeTree *editorTree = (bNodeTree *) context->getbNodeTree();
 		SocketMap socketMap;
@@ -117,7 +125,14 @@ void MuteNode::convertToOperations(ExecutionSystem *graph, CompositorContext *co
 				InputSocket *fromSocket = (InputSocket *) socketMap.find(link->fromsock)->second;
 				OutputSocket *toSocket = (OutputSocket *) socketMap.find(link->tosock)->second;
 
-				toSocket->relinkConnections(fromSocket->getConnection()->getFromSocket(), false);
+				if (toSocket->isConnected()) {
+					if (fromSocket->isConnected()) {
+						toSocket->relinkConnections(fromSocket->getConnection()->getFromSocket(), false);
+					}
+					else {
+						createDefaultOutput(graph, toSocket);
+					}
+				}
 			}
 		}
 
diff --git a/source/blender/compositor/nodes/COM_MuteNode.h b/source/blender/compositor/nodes/COM_MuteNode.h
index 44fbe6e80c6..2e5250e625e 100644
--- a/source/blender/compositor/nodes/COM_MuteNode.h
+++ b/source/blender/compositor/nodes/COM_MuteNode.h
@@ -43,6 +43,7 @@ private:
 	typedef std::map<bNodeSocket *, Socket *> SocketMap;
 
 	void reconnect(ExecutionSystem *graph, OutputSocket *output);
+	void createDefaultOutput(ExecutionSystem *graph, OutputSocket *output);
 
 	template<class SocketType> void fillSocketMap(vector<SocketType *> &sockets, SocketMap &socketMap);
 };