// 问题描述：以下代码在开发工具模拟器中正常，未开启高性能模式下也正常，仅发现高性能模式下真机表现为空白

// 代码如下
const imageSize = 500;
const imageData = wx.createImageData(imageSize, imageSize) as ImageData;
const data = [...];
imageData.data.set(data);
console.log('imageData', imageData);

// 创建Canvas
const canvas = wx.createCanvas();
canvas.width = imageSize;
canvas.height = imageSize;

const ctx = canvas.getContext('2d') as CanvasRenderingContext2D;
if (!ctx) {
  console.warn('Canvas not supported');
  return;
}

// 将处理后的图像数据绘制到canvas上
ctx.putImageData(imageData, 0, 0);

// 保存临时文件
const tempFilePath = canvas.toTempFilePathSync({});
console.log('tempFilePath', tempFilePath);

// 清理Canvas
ctx.clearRect(0, 0, canvas.width, canvas.height);

// 分享图片
wx.showShareImageMenu({
  path: tempFilePath,
  needShowEntrance: true,
  success: () => {},
  fail: () => {},
});

偶尔会报下图这个错误：