Added OpenGL info reading during init().

src/graphics.cpp

@@ -731,6 +731,9 @@ void initializeGL(void)
 	 //
 	 glFogf(GL_FOG_START,params.sceneOffset.z);
 	 glFogf(GL_FOG_END,params.sceneOffset.z+params.sceneSize.z);
+	 std::cout << "Vendor  : " << glGetString(GL_VENDOR) << "\n";
+	 std::cout << "Renderer: " << glGetString(GL_RENDERER) << "\n";
+	 std::cout << "Version : " << glGetString(GL_VERSION) << "\n";
 }
 
 void loopGL(void)