一.首先我们得拿到渲染纹理
我们在project面板creat一个RenderTexture，然后把这个渲染纹理给相机的Rendertexture，如下图所示：
然后如下面代码：
RenderTexture renderTexture = _mainCamera.targetTexture;//拿到目标渲染纹理
RenderTexture.active = renderTexture;
Texture2D tex = new Texture2D(renderTexture.width, renderTexture.height);//新建纹理存储渲染纹理
tex.ReadPixels(new Rect(0, 0, renderTexture.width, renderTexture.height), 0, 0);//把渲染纹理的像素给Texture2D,才能在项目里面使用
tex.Apply();//记得应用一下，不然很蛋疼
byte[] bytes = tex.EncodeToPNG();//拿到图片的byte
File.WriteAllBytes(Application.dataPath + "/Resources/ScreenShort/" + _index .ToString()+ ".png", bytes);//写入本地
二.把拿到的渲染纹理，加入滑动列表，成为子项
/// <summary>
/// 往面料滑动列表刷数据
/// </summary>
private void UpadteClothData()
{
ClearPrintData(_iteCloths);
for (int i = 0; i < _CustomDatas.Count; i++)
{
//根据数据个数实例化滑动列表子项
Button item = Instantiate(_item);
item.name = _CustomDatas[i].id.ToString();
CustomData clothdata = _CustomDatas[i];
Image[] _ClothImags = item.GetComponentsInChildren<Image>();
for (int j = 0; j < _ClothImags.Length; j++)
{
if (_ClothImags[j].name == "sprite")
{
Sprite spr = Sprite.Create(_CustomDatas[i].spr, new Rect(0, 0, _CustomDatas[i].spr.width, _CustomDatas[i].spr.height), Vector2.zero);
spr.name = j.ToString();
_ClothImags[j].sprite = spr;
}
item.transform.SetParent(_ScreenshotScrollView.transform);
item.transform.localPosition = new Vector3(item.transform.localPosition.x, item.transform.localPosition.y, _ScreenshotScrollView.transform.position.z);
item.transform.localScale = new Vector3(2, 2, 2);
_iteCloths.Add(item);
}
}
}
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