From ba3eaa83e01d35417dfb0aea2436cdc3460ac3d2 Mon Sep 17 00:00:00 2001
From: Robert Osfield <robert@openscenegraph.com>
Date: Thu, 30 Jun 2016 10:08:29 +0100
Subject: [PATCH] Added handling of null dynamic_cast

---
 src/osgPlugins/gles/GeometrySplitterVisitor | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/src/osgPlugins/gles/GeometrySplitterVisitor b/src/osgPlugins/gles/GeometrySplitterVisitor
index da7ce1b5f..321252435 100644
--- a/src/osgPlugins/gles/GeometrySplitterVisitor
+++ b/src/osgPlugins/gles/GeometrySplitterVisitor
@@ -215,11 +215,14 @@ protected:
         if (!primitivesToFix.empty()) {
             // filter all indices > _maxIndexValue in primitives
             for (unsigned int i = 0; i < primitivesToFix.size(); i++) {
-                osg::DrawElements* source = primitivesToFix[i].get();
-                osg::DrawElements* large = removeLargeIndices(dynamic_cast<osg::DrawElementsUInt*>(source));
-                reportedPrimitives.push_back(large);
-                geomPrimitives.push_back(source);
-                setValidIndices(validIndices, source);
+                osg::DrawElementsUInt* source = dynamic_cast<osg::DrawElementsUInt*>(primitivesToFix[i].get());
+                if (source)
+                {
+                    osg::DrawElements* large = removeLargeIndices(source);
+                    reportedPrimitives.push_back(large);
+                    geomPrimitives.push_back(source);
+                    setValidIndices(validIndices, source);
+                }
             }
         }