1、需求
测试环境、预发布环境都没有问题，发布到线上突然遇到问题，图像显示不全，或有的就出来了。崩溃了很久。最终发现是图像太大了，无法展示。
2、报错
RangeError: Invalid typed array length: 48771072WebglFilterBackend.copyGLTo2DPutImageData [as copyGLTo2D]
文章图片
3、解决方案
设置图像的最大值
fabric.textureSize = 5120;
//1024*5=5120测试及全部代码
/*
* @Author: ArdenZhao
* @Date: 2021-12-07 11:35:45
* @LastEditors: Do not edit
* @LastEditTime: 2021-12-28 11:34:18
* @FilePath: /react-ts/src/components/Fabric.js
*/
import React from 'react';
import { fabric } from "fabric";
class Fabric extends React.Component {
constructor(props) {
super(props);
this.state={
canvas:new fabric.Canvas('canvas')
}
}
componentDidMount(){
fabric.textureSize = 5120;
//1024*5=5120
const canvas = new fabric.Canvas('canvas');
console.log('canvas',canvas);
// 图片
const imgEl = document.createElement('img')
imgEl.crossOrigin = 'Anonymous' // 让图片能让所有人存取
imgEl.src = 'https://speechocean-bj.oss-cn-beijing.aliyuncs.com/0.Zzd/1015ziyouku_En/Book/18ac1a7879a187d7805944d3edfe471c8886f7a5318210b578380a5c6f439133.JPG'
// imgEl.src = 'https://2.bp.blogspot.com/-H3JXh2cIKHs/WuwLvnz19cI/AAAAAAAAMXs/-qySdr5zEcc-kcLC4arf5m5H3F_trN7sgCK4BGAYYCw/s1600/kristopher-roller-110203-unsplash-m.jpg'
imgEl.onload = () => {
const image = new fabric.Image(imgEl, {
scaleX: 0.5,
scaleY: 0.5,
angle: 0,
// angle: 15,
top: 0,
left: 0
})
// 将 filters 实例 push 进 filters 里头
image.filters.push(new fabric.Image.filters.Contrast({contrast: 0.2}))
// 这边需要重整所有的滤镜效果
image.applyFilters()
canvas.add(image)
}
};
render() {
return
Learn, {this.props.name}
;
}
}
export default Fabric;
Github地址
https://github.com/iguoxing/r...
在线演示地址
http://jsfiddle.net/Da7SP/1185/
参考链接 【Day|Day 21/100 FabricJS 图片太大无法展示】https://github.com/fabricjs/f...
