diff --git a/include/osg/FrameBufferObject b/include/osg/FrameBufferObject
index 4fb3c3074..0305e19d9 100644
--- a/include/osg/FrameBufferObject
+++ b/include/osg/FrameBufferObject
@@ -87,6 +87,21 @@
 #define GL_READ_FRAMEBUFFER_BINDING_EXT 0x8CAA
 #endif
 
+#ifndef GL_EXT_framebuffer_multisample
+#define GL_EXT_framebuffer_multisample 1
+#define GL_RENDERBUFFER_SAMPLES_EXT                 0x8CAB
+#define GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE_EXT   0x8D56
+#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
+#define GL_RENDERBUFFER_COLOR_SAMPLES_NV        0x8E10
+#define GL_MAX_MULTISAMPLE_COVERAGE_MODES_NV    0x8E11
+#define GL_MULTISAMPLE_COVERAGE_MODES_NV        0x8E12
+#endif
+
 #ifndef GL_VERSION_1_4
 #define GL_DEPTH_COMPONENT16              0x81A5
 #define GL_DEPTH_COMPONENT24              0x81A6
@@ -194,6 +209,8 @@ namespace osg
           * this call is useful for when an OpenGL context has been destroyed. */
         static void discardDeletedRenderBuffers(unsigned int contextID);
 
+        static int getMaxSamples(unsigned int contextID, const FBOExtensions *ext);
+
     protected:
         virtual ~RenderBuffer();
         RenderBuffer &operator=(const RenderBuffer &) { return *this; }
diff --git a/src/osg/FrameBufferObject.cpp b/src/osg/FrameBufferObject.cpp
index d3c014053..b51f282a8 100644
--- a/src/osg/FrameBufferObject.cpp
+++ b/src/osg/FrameBufferObject.cpp
@@ -210,6 +210,20 @@ RenderBuffer::~RenderBuffer()
     }
 }
 
+int RenderBuffer::getMaxSamples(unsigned int contextID, const FBOExtensions *ext)
+{
+    static osg::buffered_value<GLint> maxSamplesList;
+
+    GLint& maxSamples = maxSamplesList[contextID];
+
+    if (!maxSamples && ext->isMultisampleSupported())
+    {
+        glGetIntegerv(GL_MAX_SAMPLES_EXT, &maxSamples);
+    }
+
+    return maxSamples;
+}
+
 GLuint RenderBuffer::getObjectID(unsigned int contextID, const FBOExtensions *ext) const
 {
     GLuint &objectID = _objectID[contextID];
@@ -240,13 +254,18 @@ GLuint RenderBuffer::getObjectID(unsigned int contextID, const FBOExtensions *ex
 
         if (_samples > 0 && ext->isMultisampleCoverageSupported())
         {
+            int samples = minimum(_samples, getMaxSamples(contextID, ext));
+            int colorSamples = minimum(_colorSamples, samples);
+
             ext->glRenderbufferStorageMultisampleCoverageNV(GL_RENDERBUFFER_EXT,
-                _samples, _colorSamples, _internalFormat, _width, _height);
+                samples, colorSamples, _internalFormat, _width, _height);
         }
         else if (_samples > 0 && ext->isMultisampleSupported())
         {
+            int samples = minimum(_samples, getMaxSamples(contextID, ext));
+
             ext->glRenderbufferStorageMultisampleEXT(GL_RENDERBUFFER_EXT,
-                _samples, _internalFormat, _width, _height);
+                samples, _internalFormat, _width, _height);
         }
         else
         {