使用老版本2.0.10打开 截屏正常
使用2.2.2 运行截屏就全是透明图片了
比对了代码，预制，没有差异，求官方大大帮看看
直接摆在那里截屏是可以的，但是我是用双相机截屏，主相机渲染正常界面，截屏相机只显示截屏层，然后用截屏相机去截屏
把主相机的渲染层加上截屏层，渲染没问题，可以展示出来，一截就透明
console.log("图片不存在，需要重新截图");
//图片不存在重新截图保存
this.shotComplete = ()=>
{
console.log("截图全部完成");
cc.sys.localStorage.setItem("shareBgVersion",HeroGame.Instance.GameConfigInfo.shareBgVersion+1); //更新背景标识
UIItem.InitList(this.content);
this.pageView.removeAllPages();
//读取展示
for(let i = 0;i<this.picDataList.length;++i)
{
let picData = this.picDataList[i];
let texture = new cc.Texture2D();
texture.initWithData(picData,32,this.width,this.height);
//创建主相机列表展示
let sprite = new cc.SpriteFrame(texture);
let node = cc.instantiate(this.item);
node.setContentSize(this.pageSize);
console.log("node size : " + node.getContentSize());
node.name = "share_"+i;
this.pageView.addPage(node);
let Image = node.getComponent(cc.Sprite);
Image.spriteFrame = sprite;
node.active = true;
}
let size = this.content.getContentSize();
this.content.setContentSize(cc.size(200 + this.shareBgList.length* 534,size.height));
this.loading.active = false;
}
this.isNeedShot = true;
// if(this.isCanShot)
// {
// console.error("调用截图时 图片已经加载完毕，可以截图");
// this.ShotFunc();
// }
// else
// {
// console.error("调用截图时 图片未加载完毕，需要等待");
// }
this.ShotFunc();
public ShotFunc()
{
this.scheduleOnce(()=>
{
console.log("开始截图");
let picData = this.InitImage();
this.picDataList.push(picData);
this.SaveFile(picData,this.shotIdx); //保存
this.shotIdx++;
if(this.shotIdx<this.shareBgList.length+1)
{
console.log("换背景继续截图 : " + this.shotIdx);
cc.loader.loadRes("UI/Static/texture/share_"+this.shotIdx,cc.SpriteFrame,(err,res)=>
{
if(err)
{
console.error("load share bg err : " + err);
}
else
{
this.bg_shot.spriteFrame = res;
this.ShotFunc();
}
})
}
else
{
if(this.shotComplete)
{
this.shotComplete();
}
}
},0); //等一帧再次截图
}
private _width = 0;
private _height = 0;
public InitImage() : Uint8Array
{
let data = this.texture.readPixels();
this._width = this.texture.width;
this._height = this.texture.height;
let picData = this.filpYImage(data,this._width,this._height);
return picData;
}
public filpYImage (data:Uint8Array, width:number, height:number) :Uint8Array
{
let picData = new Uint8Array(width * height * 4);
let rowBytes = width * 4;
for (let row = 0; row < height; row++) {
let srow = height - 1 - row;
let start = srow * width * 4;
let reStart = row * width * 4;
// save the piexls data
for (let i = 0; i < rowBytes; i++) {
picData[reStart + i] = data[start + i];
}
}
return picData;
}
public SaveFile(picData:Uint8Array,idx:number)
{
if(CC_JSB)
{
let filePath = this.prefixPath + 'share_'+idx+'.png';
let success = jsb.saveImageData(picData, this._width, this._height, filePath)
if (success)
{
cc.log("save image data success, file: " + filePath);
}
else
{
cc.error("save image data failed!");
}
}
}
public Init()
{
if(!CC_JSB)
{
return;
}
this.prefixPath = jsb.fileUtils.getWritablePath();
if(cc.sys.os == cc.sys.OS_ANDROID)
{
this.prefixPath = '/sdcard/';
}
this.pageSize = this.item.getContentSize();
this.texture = new cc.RenderTexture();
let gl = cc.game._renderContext;
this.texture.initWithSize(this.width,this.height,gl.STENCIL_INDEX8);
this.camera.targetTexture = this.texture;
this.UpdateShareInfo();
this.pageView.setCurrentPageIndex(this.curIdx);
this.curIdx ++;
}
问题在于，预制界面中包含截屏相机组件，要是将这个预制体直接放在场景里面，截屏相机可以渲染出数据，但是我动态加载，从res 目录加载这个预制体进场景 截屏相机就无法渲染数据，分层也是对的，就是动态加载不行，关键是预制体是同一个预制体，相机预制不能后进场景吗，而且在update 中一直用 spriteFrame展示这个截屏相机的渲染内容，一直都是空的
搭了个测试环境，相机动态进场景，也可以显示的，真的奇怪