attempts at folding opencl support in

app/render/backend/renderbackend.cpp

@@ -0,0 +1,34 @@
+#include "renderbackend.h"
+
+RenderBackend::RenderBackend() :
+  viewer_node_(nullptr)
+{
+
+}
+
+RenderBackend::~RenderBackend()
+{
+
+}
+
+const QString &RenderBackend::GetError()
+{
+  return error_;
+}
+
+void RenderBackend::set_viewer_node(ViewerOutput *viewer_node)
+{
+  viewer_node_ = viewer_node;
+
+  Decompile();
+}
+
+void RenderBackend::SetError(const QString &error)
+{
+  error_ = error;
+}
+
+ViewerOutput *RenderBackend::viewer_node() const
+{
+  return viewer_node_;
+}