Enabled FBO by default

panda/src/wgldisplay/config_wgldisplay.cxx

@@ -47,7 +47,7 @@ ConfigVariableBool gl_do_vidmemsize_check
           "requested.  It only affects fullscreen windows."));
 
 ConfigVariableBool gl_support_fbo
-  ("gl-support-fbo", false,
+  ("gl-support-fbo", true,
    PRC_DESC("Configure this false if your GL's implementation of "
             "EXT_framebuffer_object is broken.  The system might still be "
             "able to create buffers using pbuffers or the like."));