From 02f131c7fe9f0322203ab16ffb5f3ca1d561bd64 Mon Sep 17 00:00:00 2001
From: Robert Osfield <robert@openscenegraph.com>
Date: Mon, 4 Aug 2008 14:01:42 +0000
Subject: [PATCH] From Philip Lowman, workaround of Centos 5's missing
 definition of GL_MAX_SAMPLES_EXT.

---
 include/osg/FrameBufferObject | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/include/osg/FrameBufferObject b/include/osg/FrameBufferObject
index de1a52326..dc5e66d55 100644
--- a/include/osg/FrameBufferObject
+++ b/include/osg/FrameBufferObject
@@ -94,6 +94,12 @@
 #define GL_MAX_SAMPLES_EXT                          0x8D57
 #endif
 
+#ifndef GL_MAX_SAMPLES_EXT
+// Workaround for Centos 5 and other distros that define
+// GL_EXT_framebuffer_multisample but not GL_MAX_SAMPLES_EXT
+#define GL_MAX_SAMPLES_EXT 0x8D57
+#endif
+
 #ifndef GL_NV_framebuffer_multisample_coverage
 #define GL_NV_framebuffer_multisample_coverage 1
 #define GL_RENDERBUFFER_COVERAGE_SAMPLES_NV     0x8CAB