+#ifdef VTK_OPENGL2
+ VTKViewer_OpenGLHelper OpenGLHelper;
+ GLhandleARB BackgroundProgram;
+ GLhandleARB BackgroundVertexShader;
+ GLhandleARB BackgroundFragmentShader;
+ GLuint VertexArrayObject;
+
+ struct Locations
+ {
+ static const GLint INVALID_LOCATION = -1;
+
+ GLint UseTexture;
+ GLint BackgroundTexture;
+
+ Locations()
+ : UseTexture (INVALID_LOCATION),
+ BackgroundTexture (INVALID_LOCATION)
+ {
+ //
+ }
+
+ } myLocations;
+#endif
+
+