From 2b01d48a5a4fc72dd70d51839aa85bb05c2a2db1 Mon Sep 17 00:00:00 2001
From: vsr <vsr@opencascade.com>
Date: Thu, 26 Oct 2017 16:33:23 +0300
Subject: [PATCH] 0023498: EDF 15706 - Problem with VTK viewer

---
 src/VTKViewer/VTKViewer_OpenGLRenderer.cxx | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/VTKViewer/VTKViewer_OpenGLRenderer.cxx b/src/VTKViewer/VTKViewer_OpenGLRenderer.cxx
index 53a65830a..f99d102e1 100644
--- a/src/VTKViewer/VTKViewer_OpenGLRenderer.cxx
+++ b/src/VTKViewer/VTKViewer_OpenGLRenderer.cxx
@@ -68,6 +68,7 @@ void VTKViewer_OpenGLRenderer::SetGradientType( const int theGradientType )
 
 void VTKViewer_OpenGLRenderer::Clear(void)
 {
+  vtkOpenGLRenderer::Clear();
 #ifdef VTK_OPENGL2
   if (this->OpenGLHelper.IsInitialized())
   {
-- 
2.39.2