From ee1e83b94b05b453a7bdf1215c5a7ba80324c804 Mon Sep 17 00:00:00 2001
From: kgv <kgv@opencascade.com>
Date: Fri, 19 Apr 2013 16:33:05 +0400
Subject: [PATCH] 0023917: Primitive Array with reserved but unused Edges array
 drawn corrupted from VBO

---
 src/OpenGl/OpenGl_PrimitiveArray.cxx | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/OpenGl/OpenGl_PrimitiveArray.cxx b/src/OpenGl/OpenGl_PrimitiveArray.cxx
index 8e71c6a3a9..02a14a6db0 100755
--- a/src/OpenGl/OpenGl_PrimitiveArray.cxx
+++ b/src/OpenGl/OpenGl_PrimitiveArray.cxx
@@ -85,7 +85,8 @@ Standard_Boolean OpenGl_PrimitiveArray::BuildVBO (const Handle(OpenGl_Workspace)
     return Standard_False;
   }
 
-  if (myPArray->edges != NULL)
+  if (myPArray->edges != NULL
+   && myPArray->num_edges > 0)
   {
     myVbos[VBOEdges] = new OpenGl_IndexBuffer();
     if (!myVbos[VBOEdges]->Init (aGlCtx, 1, myPArray->num_edges, (GLuint* )myPArray->edges))
-- 
2.39.5