Unity Screenshots

unity3D 截屏的3种方法：

1.CaptureScreenshot

...
string path;
Application.CaptureScreenshot( path );
StartCoroutine(GetCaptruePicture(path));
....

IEnumerator GetCaptruePicture ( string path ) {
　　yield return new WaitForSeconds(1.5f );///对于较大图片是要等待一段时间
　　string filePath = "file:///" + path;
      WWW www = new WWW ( filePath ); 
      yield return www; 
    if(www.error == null ){ 
        renderer.material.mainTexture = www.texture;
    }
}

2.如果不想保存屏幕，而是仅仅想将之转化成材质：

private Texture2D m_Texture;
void Start() {
    m_Texture = new Texture2D(Screen.width, Screen.height, TextureFormat.RGB24, true);
}

//ReadPixels
StartCoroutine ( GetCaptruePictureByReadPixels() );


IEnumerator GetCaptruePictureByReadPixels() {
        yield return new WaitForEndOfFrame();
        m_Texture.ReadPixels(new Rect(0, 0, Screen.width, Screen.height), 0, 0, true);
        PauseTexture.Apply();
}

3.RenderTexture

设置不同camera中内容作为材质。