使用createPixelMap构建pixelmap，最终展示的颜色与期望不符合？

Question

下面代码，期望绘制蓝色，最终展示为红色

let length = 600 * 600 * 4;
let buffer = new Uint8Array(length);
for (let index = 0; index < length; ) {
  buffer[index] = 0x00; //R
  buffer[index + 1] = 0x00; //G
  buffer[index + 2] = 0xff; //B
  buffer[index + 3] = 0xff; //A
  index = index + 4;
}
let opts: image.InitializationOptions = {
  pixelFormat: image.PixelMapFormat.RGBA_8888,
  size: {
    height: 600,
    width: 600
  }
}
image.createPixelMap(buffer.buffer, opts).then((pixelMap) => {
  this.context.drawImage(pixelMap, 0, 0);
})

Answer 1

手动将R、B位置交换可以解决