shift renderer prototype to new node structure

app/node/output/track/track.cpp

@@ -107,7 +107,7 @@ QList<NodeDependency> TrackOutput::RunDependencies(NodeOutput* output, const rat
     ValidateCurrentBlock(time);
 
     if (current_block_ != this) {
-      deps.append(NodeDependency(current_block_, time));
+      deps.append(NodeDependency(current_block_->texture_output(), time));
     }
   }
 

app/node/output/viewer/viewer.cpp

@@ -20,8 +20,6 @@
 
 #include "viewer.h"
 
-#include "render/rendertexture.h"
-
 ViewerOutput::ViewerOutput() :
   attached_viewer_(nullptr)
 {
@@ -83,11 +81,17 @@ void ViewerOutput::AttachViewer(ViewerPanel *viewer)
 void ViewerOutput::InvalidateCache(const rational &start_range, const rational &end_range)
 {
   // Update any attached viewer
-  ViewerTimeChanged(current_time_);
+  UpdateViewer();
 
   Node::InvalidateCache(start_range, end_range);
 }
 
+void ViewerOutput::UpdateViewer()
+{
+  texture_input_->ClearCachedValue();
+  ViewerTimeChanged(current_time_);
+}
+
 QVariant ViewerOutput::Value(NodeOutput *output, const rational &time)
 {
   Q_UNUSED(output)

app/node/output/viewer/viewer.h

@@ -23,6 +23,7 @@
 
 #include "node/node.h"
 #include "panel/viewer/viewer.h"
+#include "render/rendertexture.h"
 
 /**
  * @brief A bridge between a node system and a ViewerPanel