diff --git a/include/osg/GLExtensions b/include/osg/GLExtensions
index 63e46538c..0b7864515 100644
--- a/include/osg/GLExtensions
+++ b/include/osg/GLExtensions
@@ -656,6 +656,8 @@ class OSG_EXPORT GLExtensions : public osg::Referenced
         // FrameBuferObject
         bool isFrameBufferObjectSupported;
         bool isPackedDepthStencilSupported;
+        bool isMultisampledRenderToTextureSupported;
+
         bool isRenderbufferMultisampleSupported() const { return glRenderbufferStorageMultisample != 0; }
         bool isRenderbufferMultisampleCoverageSupported() const { return glRenderbufferStorageMultisampleCoverageNV != 0; }
 
@@ -672,6 +674,7 @@ class OSG_EXPORT GLExtensions : public osg::Referenced
 
         void (GL_APIENTRY * glFramebufferTexture1D) (GLenum, GLenum, GLenum, GLuint, GLint);
         void (GL_APIENTRY * glFramebufferTexture2D) (GLenum, GLenum, GLenum, GLuint, GLint);
+        void (GL_APIENTRY * glFramebufferTexture2DMultisample) (GLenum, GLenum, GLenum, GLuint, GLint, GLsizei);
         void (GL_APIENTRY * glFramebufferTexture3D) (GLenum, GLenum, GLenum, GLuint, GLint, GLint);
         void (GL_APIENTRY * glFramebufferTexture) (GLenum, GLenum, GLint, GLint);
         void (GL_APIENTRY * glFramebufferTextureLayer) (GLenum, GLenum, GLuint, GLint, GLint);
diff --git a/src/osg/GLExtensions.cpp b/src/osg/GLExtensions.cpp
index c64c5995f..1c3bfe1a9 100644
--- a/src/osg/GLExtensions.cpp
+++ b/src/osg/GLExtensions.cpp
@@ -1090,6 +1090,7 @@ GLExtensions::GLExtensions(unsigned int in_contextID):
 
     setGLExtensionFuncPtr(glFramebufferTexture1D, "glFramebufferTexture1D", "glFramebufferTexture1DEXT", "glFramebufferTexture1DOES", validContext);
     setGLExtensionFuncPtr(glFramebufferTexture2D, "glFramebufferTexture2D", "glFramebufferTexture2DEXT", "glFramebufferTexture2DOES", validContext);
+    setGLExtensionFuncPtr(glFramebufferTexture2DMultisample, "glFramebufferTexture2DMultisample", "glFramebufferTexture2DMultisampleEXT", validContext);
     setGLExtensionFuncPtr(glFramebufferTexture3D, "glFramebufferTexture3D", "glFramebufferTexture3DEXT", "glFramebufferTexture3DOES", validContext);
     setGLExtensionFuncPtr(glFramebufferTexture, "glFramebufferTexture", "glFramebufferTextureEXT", "glFramebufferTextureOES", validContext);
     setGLExtensionFuncPtr(glFramebufferTextureLayer, "glFramebufferTextureLayer", "glFramebufferTextureLayerEXT", "glFramebufferTextureLayerOES", validContext);
@@ -1129,6 +1130,8 @@ GLExtensions::GLExtensions(unsigned int in_contextID):
                                      (isGLExtensionSupported(contextID, "GL_EXT_packed_depth_stencil")) ||
                                      (isGLExtensionSupported(contextID, "GL_OES_packed_depth_stencil")));
 
+    isMultisampledRenderToTextureSupported = validContext && isGLExtensionSupported(contextID, "GL_EXT_multisampled_render_to_texture");
+
     //subroutine
     osg::setGLExtensionFuncPtr(glGetSubroutineUniformLocation, "glGetSubroutineUniformLocation", validContext);
     osg::setGLExtensionFuncPtr(glGetActiveSubroutineUniformName, "glGetActiveSubroutineUniformName", validContext);