From 2719e4f8285570345611ef5df27daeebcf4a3b3f Mon Sep 17 00:00:00 2001
From: osa <osa@opencascade.com>
Date: Tue, 11 Dec 2018 13:40:40 +0300
Subject: [PATCH] 0030223: Visualization, TKOpenGl - frustum culling does not
 clip objects within perspective camera.

Fixed multiplication order of Projection and WorldView matrices
---
 src/OpenGl/OpenGl_BVHTreeSelector.cxx | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/OpenGl/OpenGl_BVHTreeSelector.cxx b/src/OpenGl/OpenGl_BVHTreeSelector.cxx
index b696305e26..396e6efa0a 100644
--- a/src/OpenGl/OpenGl_BVHTreeSelector.cxx
+++ b/src/OpenGl/OpenGl_BVHTreeSelector.cxx
@@ -93,7 +93,7 @@ void OpenGl_BVHTreeSelector::SetViewVolume (const Handle(Graphic3d_Camera)& theC
   OpenGl_Vec4d aRightBottomNear (nRight, nBottom, -aNear, 1.0), aLeftTopFar     (fLeft,  fTop,    -aFar, 1.0);
   OpenGl_Vec4d aRightTopNear    (nRight, nTop,    -aNear, 1.0), aLeftBottomFar  (fLeft,  fBottom, -aFar, 1.0);
 
-  const OpenGl_Mat4d aViewProj = myWorldViewMat * myProjectionMat;
+  const OpenGl_Mat4d aViewProj = myProjectionMat * myWorldViewMat;
   OpenGl_Mat4d anInvWorldView;
   myWorldViewMat.Inverted (anInvWorldView);
 
-- 
2.20.1