TextureView 中的抗锯齿

Question

我尝试使用SurfaceView 和TextureView 播放同一视频，并注意到使用TextureView 渲染的图像比SurfaceView 渲染的图像更混叠（不太“平滑”）。

这是什么原因？有什么方法可以让TextureView 的渲染看起来更好？

TextureView 是这样使用的：

    TextureView textureView = new TextureView(this);
    textureView.setSurfaceTextureListener(new SurfaceTextureListener() {

        @Override
        public void onSurfaceTextureAvailable(SurfaceTexture surfaceTexture, int width, int height) {
            Log.i("test", "onSurfaceTextureAvailable()");
            MediaPlayer player = MediaPlayer.create(TestActivity.this, Uri.parse(VIDEO_URL));
            Surface surface = new Surface(surfaceTexture);
            player.setSurface(surface);
            player.start();
        }

        @Override
        public void onSurfaceTextureUpdated(SurfaceTexture surface) { 
            Log.i("test", "onSurfaceTextureUpdated()");
        }

        @Override
        public void onSurfaceTextureSizeChanged(SurfaceTexture surface, int width, int height) { 
            Log.i("test", "onSurfaceTextureSizeChanged()");
        }

        @Override
        public boolean onSurfaceTextureDestroyed(SurfaceTexture surface) {
            Log.i("test", "onSurfaceTextureDestroyed()");
            return false;
        }
    });
    setContentView(textureView);

对于SurfaceView：

    SurfaceView surfaceView = new SurfaceView(this);
    surfaceView.getHolder().addCallback(new Callback() {

        @Override
        public void surfaceCreated(SurfaceHolder holder) {
            Log.i("test", "surfaceCreated()");
        }

        @Override
        public void surfaceDestroyed(SurfaceHolder holder) { 
            Log.i("test", "surfaceDestroyed()");
        }

        @Override
        public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) { 
            Log.i("test", "surfaceChanged()");
            MediaPlayer player = MediaPlayer.create(TestActivity.this, Uri.parse(VIDEO_URL));
            player.setSurface(holder.getSurface());
            player.start();
        }
    });
    setContentView(surfaceView);

Answer 1

好吧，似乎在 TextureView 上应用缩放（不是 1）会产生我正在寻找的“平滑”效果。

textureView.setScaleX(1.00001f);

这听起来像是一个奇怪的技巧……但它确实有效。挖掘改变渲染方面的缩放所做的事情会很有趣......