grid index bug fix

qinbo

2022-02-11 328d9c88c60e16c210d372f9667a863d4591efe6

1
"undefined"==typeof self&&(self={}),self.onmessage=function(s){var e=s.data.array,s=self.webkitPostMessage||self.postMessage;try{s({array:e},[e.buffer])}catch(e){s({})}};