From 7c57dd04defb38db6f86aa2b5e9e226ca2eacf7b Mon Sep 17 00:00:00 2001
From: Thomas Hogarth <thomas.hogarth@gmail.com>
Date: Tue, 3 Apr 2018 15:48:37 +0100
Subject: [PATCH] missing gles2 check

---
 src/osgViewer/GraphicsWindowIOS.mm | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/osgViewer/GraphicsWindowIOS.mm b/src/osgViewer/GraphicsWindowIOS.mm
index 8fd10c06b..39e1ebac7 100644
--- a/src/osgViewer/GraphicsWindowIOS.mm
+++ b/src/osgViewer/GraphicsWindowIOS.mm
@@ -556,8 +556,10 @@ typedef std::map<void*, unsigned int> TouchPointsIdMapping;
                               0, 0, _backingWidth, _backingHeight,
                               GL_COLOR_BUFFER_BIT, GL_LINEAR);
         }
+#   if OSG_GLES2_FEATURES
         else
             glResolveMultisampleFramebufferAPPLE();
+#   endif
 #   else
         glResolveMultisampleFramebufferAPPLE();
 #   endif