From 49dfdb7a977aa41a196e27727229b9b55413b8b3 Mon Sep 17 00:00:00 2001
From: kgv <kgv@opencascade.com>
Date: Thu, 2 May 2019 16:58:06 +0300
Subject: [PATCH] 0030516: Visualization - Pointer to an OpenGl_Structure is
 deleted and accessed later after PrsMgr_Presentation::Highlight()

Do not set IsForHighlight flag for already displayed presentation.
---
 src/PrsMgr/PrsMgr_Presentation.cxx | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/src/PrsMgr/PrsMgr_Presentation.cxx b/src/PrsMgr/PrsMgr_Presentation.cxx
index fa647c6bc2..190fc3b7e3 100644
--- a/src/PrsMgr/PrsMgr_Presentation.cxx
+++ b/src/PrsMgr/PrsMgr_Presentation.cxx
@@ -83,13 +83,12 @@ void PrsMgr_Presentation::display (const Standard_Boolean theIsHighlight)
 {
   if (!base_type::IsDisplayed())
   {
-    base_type::SetIsForHighlight (theIsHighlight);
+    base_type::SetIsForHighlight (theIsHighlight); // optimization - disable frustum culling for this presentation
     base_type::Display();
   }
   else if (!base_type::IsVisible())
   {
     base_type::SetVisible (Standard_True);
-    base_type::SetIsForHighlight (theIsHighlight);
   }
 }