引擎版本：2.0.1

可以用什么代替呢?
引擎代码：
	/**
	*通过图片源填充纹理,可为HTMLImageElement、HTMLCanvasElement、HTMLVideoElement、ImageBitmap、ImageData,
	*设置之后纹理宽高可能会发生变化。
	*/
	__proto.loadImageSource=function(source,premultiplyAlpha){
		(premultiplyAlpha===void 0)&& (premultiplyAlpha=false);
		var width=source.width;
		var height=source.height;
		this._width=width;
		this._height=height;
		this._setWarpMode(/*laya.webgl.WebGLContext.TEXTURE_WRAP_S*/0x2802,this._wrapModeU);
		this._setWarpMode(/*laya.webgl.WebGLContext.TEXTURE_WRAP_T*/0x2803,this._wrapModeV);
		this._setFilterMode(this._filterMode);
		var gl=LayaGL.instance;
		WebGLContext.bindTexture(gl,this._glTextureType,this._glTexture);
		var glFormat=this._getGLFormat();
		if (Render.isConchApp){
			source.setPremultiplyAlpha(premultiplyAlpha);
			gl.texImage2D(this._glTextureType,0,/*laya.webgl.WebGLContext.RGBA*/0x1908,/*laya.webgl.WebGLContext.RGBA*/0x1908,/*laya.webgl.WebGLContext.UNSIGNED_BYTE*/0x1401,source);
			}else {
			(premultiplyAlpha)&& (gl.pixelStorei(/*laya.webgl.WebGLContext.UNPACK_PREMULTIPLY_ALPHA_WEBGL*/0x9241,true));
			gl.texImage2D(this._glTextureType,0,glFormat,glFormat,/*laya.webgl.WebGLContext.UNSIGNED_BYTE*/0x1401,source);
			(premultiplyAlpha)&& (gl.pixelStorei(/*laya.webgl.WebGLContext.UNPACK_PREMULTIPLY_ALPHA_WEBGL*/0x9241,false));
		}
		if (this._mipmap && this._isPot(width)&& this._isPot(height)){
			gl.generateMipmap(this._glTextureType);
			this._setGPUMemory(width *height *4 *(1+1 / 3));
			}else {
			this._setGPUMemory(width *height *4);
		}
		if (this._canRead){
			if (Render.isConchApp){
				this._pixels=new Uint8Array(source._nativeObj.getImageData(0,0,width,height));
				}else {
				Browser.canvas.size(width,height);
				Browser.canvas.clear();
				Browser.context.drawImage(source,0,0,width,height);
				this._pixels=new Uint8Array(Browser.context.getImageData(0,0,width,height).data.buffer);
			}
		}
		this._readyed=true;
		this._activeResource();
	}
参考文档 https://cdofs.oppomobile.com/cdo-activity/static/201810/26/quickgame/documentation/render/canvas.html

ps:2.1.1.1 一样报错