抗锯齿在TextureView [英] Antialiasing in TextureView

问题描述

我试图用 SurfaceView 和 TextureView 播放相同的视频，发现图像渲染与 TextureView 更别名（少'平稳'）高于 SurfaceView 。

，这是什么原因呢？有什么办法来配置渲染 TextureView 的更好看？

在 TextureView 使用这样的：

  TextureView textureView =新TextureView（本）;
    textureView.setSurfaceTextureListener（新SurfaceTextureListener（）{

        @覆盖
        公共无效onSurfaceTextureAvailable（表面纹理表面纹理，诠释的宽度，高度INT）{
            Log.i（测试，onSurfaceTextureAvailable（））;
            的MediaPlayer播放器= MediaPlayer.create（TestActivity.this，Uri.parse（VIDEO_URL））;
            面面=新的表面（表面纹理）;
            player.setSurface（面）;
            player.start（）;
        }

        @覆盖
        公共无效onSurfaceTextureUpdated（表面表面纹理）{
            Log.i（测试，onSurfaceTextureUpdated（））;
        }

        @覆盖
        公共无效onSurfaceTextureSizeChanged（表面表面纹理，诠释的宽度，高度INT）{
            Log.i（测试，onSurfaceTextureSizeChanged（））;
        }

        @覆盖
        公共布尔onSurfaceTextureDestroyed（表面表面纹理）{
            Log.i（测试，onSurfaceTextureDestroyed（））;
            返回false;
        }
    }）;
    的setContentView（textureView）;
 

和的 SurfaceView ：

  SurfaceView surfaceView =新SurfaceView（本）;
    surfaceView.getHolder（）的addCallback（新的回调（）{

        @覆盖
        公共无效surfaceCreated（SurfaceHolder持有者）{
            Log.i（测试，surfaceCreated（））;
        }

        @覆盖
        公共无效surfaceDestroyed（SurfaceHolder持有者）{
            Log.i（测试，surfaceDestroyed（））;
        }

        @覆盖
        公共无效surfaceChanged（SurfaceHolder持有人，INT格式，诠释的宽度，高度INT）{
            Log.i（测试，surfaceChanged（））;
            的MediaPlayer播放器= MediaPlayer.create（TestActivity.this，Uri.parse（VIDEO_URL））;
            player.setSurface（holder.getSurface（））;
            player.start（）;
        }
    }）;
    的setContentView（surfaceView）;
 

解决方案

嗯，好像是应用分级（除1）在TextureView做的平滑的效果，我正在寻找。

  textureView.setScaleX（1.00001f）;
 

这听起来像一个奇怪的黑客攻击......但它的工作原理。将是有趣挖掘出了什么事在改变渲染方面的比例做了...

I tried to play the same video with a SurfaceView and a TextureView and noticed that the image rendered with the TextureView is more aliased (less 'smooth') than with the SurfaceView.

What is the reason for this ? Is there any way to configure rendering of TextureView to look better ?

The TextureView is used like this:

    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);

And for the 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);

解决方案

Well, it seems that applying a scaling (other than 1) on the TextureView does the 'smoothing' effect that I'm looking for.

textureView.setScaleX(1.00001f);

That sounds like a strange hack...but it works. Would be interesting to dig out what's done in the scaling that changes the rendering aspect...

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