From 3ef5d2b3313fd9f8cb60a3f6230bf38687a6ccc5 Mon Sep 17 00:00:00 2001
From: Daniel Trstenjak <daniel.trstenjak@gmail.com>
Date: Tue, 29 Jan 2019 11:37:28 +0100
Subject: [PATCH] OcclusionQueryNode: ensure a valid query geometry

If the query geometry is invalid then don't do any occlusion queries and
never traverse the subgraphs.
---
 src/osg/OcclusionQueryNode.cpp | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/osg/OcclusionQueryNode.cpp b/src/osg/OcclusionQueryNode.cpp
index 915dcdb82..8acf40084 100644
--- a/src/osg/OcclusionQueryNode.cpp
+++ b/src/osg/OcclusionQueryNode.cpp
@@ -483,6 +483,14 @@ bool OcclusionQueryNode::getPassed( const Camera* camera, NodeVisitor& nv )
         return _passed;
     }
 
+    if ( !_validQueryGeometry )
+    {
+        // The box of the query geometry is invalid, return false to not traverse
+        // the subgraphs.
+        _passed = false;
+        return _passed;
+    }
+
     {
         // Two situations where we want to simply do a regular traversal:
         //  1) it's the first frame for this camera