Disable viewer nodes and previews when rendering in background mode

This node and operations are not useful in background mode anyway,
but calculating them could be really time-consuming especially
when working on 4K frames.

1 files changed, 2 insertions, 1 deletions

diff --git a/source/blender/compositor/operations/COM_PreviewOperation.h b/source/blender/compositor/operations/COM_PreviewOperation.h
index 9e774d0e41b..0da6b8e4e56 100644
--- a/source/blender/compositor/operations/COM_PreviewOperation.h
+++ b/source/blender/compositor/operations/COM_PreviewOperation.h
@@ -26,6 +26,7 @@
 #include "DNA_image_types.h"
 #include "DNA_color_types.h"
 #include "BLI_rect.h"
+#include "BKE_global.h"
 
 class PreviewOperation : public NodeOperation {
 protected:
@@ -42,7 +43,7 @@ protected:
 	const ColorManagedDisplaySettings *m_displaySettings;
 public:
 	PreviewOperation(const ColorManagedViewSettings *viewSettings, const ColorManagedDisplaySettings *displaySettings);
-	bool isOutputOperation(bool rendering) const { return true; }
+	bool isOutputOperation(bool rendering) const { return !G.background; }
 	void initExecution();
 	void deinitExecution();
 	const CompositorPriority getRenderPriority() const;