微信小游戏的putImageData有毛病，请官方修复 - WXOPEN Club

//js代码全部在game.js

let systemInfo = wx.getSystemInfoSync();

console.log("系统信息：",systemInfo);

GameGlobal.isDevTool = systemInfo.platform === "devtools";

//

let canvas = wx.createCanvas();

let context = canvas.getContext('2d');

let image = wx.createImage();

let imgName = 'logo.jpg';

image.src = 'images/'+ imgName;

let w = 150;

let imgData = {};

image.onload = function () {

context.drawImage(image, 0, 0);

//

//取canvas的部分数据

imgData = context.getImageData( 100,100, w,w);

//写字

context.font = "20px Georgia";

context.fillStyle = "black";

context.fillText("哇", 120 , 120 );

//复原

//context.putImageData(imgData, 100,100);//去掉注释，单独执行，有效，但是与原来的样子出入明显

};

//移动棋子实现

wx.onTouchStart(function (e) {

console.log('触摸开始',e);

//复原

//context.putImageData(imgData, 100,100);//去掉注释，单独执行，无效

});

wx.onTouchEnd(function (e) {

console.log('触摸结束',e.touches);

//复原

context.putImageData(imgData, 100,100);//无效

});

来自手机的截图：

中间明显有个方块，这哪里是复原？看看开发工具是怎么复原的：