From c6ce10c7d1d5fba82f2f041ee07a2d25c362fe0e Mon Sep 17 00:00:00 2001
From: Sergey Alexandrov <alexandrov88@gmail.com>
Date: Sat, 11 Oct 2014 13:41:35 +0200
Subject: [PATCH] Fix an issue with PCLVisualizer producing empty screenshots

---
 visualization/src/interactor_style.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/visualization/src/interactor_style.cpp b/visualization/src/interactor_style.cpp
index 508f284d5e0..788d52c74b7 100644
--- a/visualization/src/interactor_style.cpp
+++ b/visualization/src/interactor_style.cpp
@@ -99,6 +99,7 @@ pcl::visualization::PCLVisualizerInteractorStyle::Initialize ()
 
   // Create the image filter and PNG writer objects
   wif_ = vtkSmartPointer<vtkWindowToImageFilter>::New ();
+  wif_->ReadFrontBufferOff ();
   snapshot_writer_ = vtkSmartPointer<vtkPNGWriter>::New ();
   snapshot_writer_->SetInputConnection (wif_->GetOutputPort ());