From 4f7f34a6b0af9c74e2cb871e87f7fd44606504fc Mon Sep 17 00:00:00 2001
From: Robert Osfield <robert@openscenegraph.com>
Date: Wed, 22 Aug 2018 10:42:18 +0100
Subject: [PATCH] Merged fix for PointSprite modes validity checks from master.

---
 src/osg/State.cpp | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/src/osg/State.cpp b/src/osg/State.cpp
index d41cc362d..5f31760cf 100644
--- a/src/osg/State.cpp
+++ b/src/osg/State.cpp
@@ -18,6 +18,7 @@
 #include <osg/Drawable>
 #include <osg/ApplicationUsage>
 #include <osg/ContextData>
+#include <osg/PointSprite>
 #include <osg/os_utils>
 
 #include <sstream>
@@ -285,6 +286,18 @@ void State::initializeExtensionProcs()
         }
     }
 
+    // set the validity of Modes
+    if (false)
+    {
+        bool pointSpriteModeValid = _glExtensions->isPointSpriteModeSupported;
+
+    #if defined( OSG_GLES1_AVAILABLE ) //point sprites don't exist on es 2.0
+        setModeValidity(GL_POINT_SPRITE_OES, pointSpriteModeValid);
+    #else
+        setModeValidity(GL_POINT_SPRITE_ARB, pointSpriteModeValid);
+    #endif
+    }
+
 
     _extensionProcsInitialized = true;