no longer have to double-buffer
no longer have to double-buffer

yannick/h2o,cwyang/h2o,yannick/h2o,h2o/h2o,cwyang/h2o,cwyang/h2o,yannick/h2o,yannick/h2o,yannick/h2o,h2o/h2o,cwyang/h2o,cwyang/h2o,devnexen/h2o,h2o/h2o,h2o/h2o,h2o/h2o,devnexen/h2o,yannick/h2o,h2o/h2o,cwyang/h2o,h2o/h2o,cwyang/h2o,devnexen/h2o,devnexen/h2o,h2o/h2o,yannick/h2o,devnexen/h2o,yannick/h2o,h2o/h2o,devnexen/h2o,yannick/h2o,devnexen/h2o,cwyang/h2o,devnexen/h2o,devnexen/h2o