From: rnv <rnv@opencascade.com>
Date: Fri, 2 Apr 2021 02:28:59 +0000 (+0300)
Subject: Fix transparency of VTK Viewer
X-Git-Url: http://git.salome-platform.org/gitweb/?a=commitdiff_plain;h=04551c1c5eb7823f516fe9837dfeb62add2fa18d;p=modules%2Fgui.git

Fix transparency of VTK Viewer
---

diff --git a/src/VTKViewer/VTKViewer_OpenGLRenderer.cxx b/src/VTKViewer/VTKViewer_OpenGLRenderer.cxx
index f0af96f50..c33b09930 100644
--- a/src/VTKViewer/VTKViewer_OpenGLRenderer.cxx
+++ b/src/VTKViewer/VTKViewer_OpenGLRenderer.cxx
@@ -74,7 +74,7 @@ void VTKViewer_OpenGLRenderer::SetGradientType( const int theGradientType )
 
 void VTKViewer_OpenGLRenderer::Clear(void)
 {
-  vtkOpenGLRenderer::Clear();
+  // vtkOpenGLRenderer::Clear();
 #ifdef VTK_OPENGL2
   if (this->OpenGLHelper.IsInitialized())
   {
@@ -112,7 +112,7 @@ void VTKViewer_OpenGLRenderer::Clear(void)
     glClearColor( static_cast<GLclampf>(this->Background[0]),
                   static_cast<GLclampf>(this->Background[1]),
                   static_cast<GLclampf>(this->Background[2]),
-                  static_cast<GLclampf>(0.0));
+                  static_cast<GLclampf>(1.0));
     clear_mask |= GL_COLOR_BUFFER_BIT;
   }