- if( mwindow->uses_opengl() ) {
-// this code is to idle rendering before drawing overlays on refresh frame
-// if this is not done, occationally opengl finishs late, and overwrites
-// the x11 refresh frame and the overlay is not visible. Rarely happens.
- unlock_canvas();
- mwindow->playback_3d->finish_output(this);
- lock_canvas("CWindowCanvas::draw_refresh");
- }