Question

我在Away3D中运行VideoTexture，它通常运行良好。我一直试图缩小视频之间的黑色差距，并尝试让它们很好地排列，但是我的尝试导致视频有时会降级为移动设备上的软件渲染，尤其是首次启动时。

我使用Away3D和Starling以及共享stage3DProxy。

以下是我如何设置视频

            sphereGeometry = new SphereGeometry(5000, 64, 48);
            panoTexture2DBase = new NativeVideoTexture(Model.config.getAssetUrl(Model.currentScene.video), true, true);

            panoTexture2DBase.addEventListener(NativeVideoTexture.VIDEO_START,function(e:Event =null){setTimeout(onVideoStart,1000)});
            panoTextureMaterial = new TextureMaterial(panoTexture2DBase, false, false, false);

            panoVideoMesh = new Mesh(sphereGeometry, panoTextureMaterial);
            panoVideoMesh.scaleX *= -1;

            panoVideoMesh.rotate(Vector3D.Y_AXIS,-90);

            scene.addChild(panoVideoMesh);
            view.render();

            panoTexture2DBase.player.pause();

我使用Away3d NativeVideoTexture加载网络流。后续视频通常很好，硬件加速。它只是第一个总是降级的。

我的NativeVideoTexture类

override protected function createTexture(context:Context3D):TextureBase
    {
        try
        {
            trace("Context3D.supportsVideoTexture", Context3D.supportsVideoTexture)

            if (!Context3D.supportsVideoTexture)
            {
                throw new Error("flash.display3D.textures.VideoTexture not supported");
                return null;
            }

            texture = context.createVideoTexture();
            texture.attachNetStream(_player.ns);

            _player.ns.addEventListener(NetStatusEvent.NET_STATUS, netstat);
            _player.ns.seek(1);
            texture.addEventListener(Event.TEXTURE_READY, onTextureReady);
            texture.addEventListener(VideoTextureEvent.RENDER_STATE, onRenderState);

            if (_autoPlay) _player.play();

        }
        catch (e:Error)
        {
            trace(e, e.getStackTrace());
        }

        return texture;
    }

    private function onMetaData(metaData:Object):void
    {
        duration = metaData.duration;  

    }

    private function onTextureReady(e:Event):void
    {
    //  trace("NativeVideoTexture.onTextureReady()");
        if(_player.duration)
            if(_player.ns.time > _player.duration - 1){
                _player.pause();
                dispatchEvent(new Event(VIDEO_STOP));
                _player.seek(0);
            }
            else if(_player.ns.time > 0.01 && waitingForBuffer){
                dispatchEvent(new Event(VIDEO_START));
                waitingForBuffer = false;
            }

    }




    private function onRenderState(e:VideoTextureEvent):void
    {
        trace(e.status);
        if (e.status == VideoStatus.SOFTWARE)
        {
            trace("Indicates software video decoding works.")
        }
        if (e.status == VideoStatus.ACCELERATED)
        {
            trace("Indicates hardware-accelerated (GPU) video decoding works.")
        }
        if (e.status == VideoStatus.UNAVAILABLE)
        {
            trace("Indicates Video decoder is not available.")
        }
    }

任何人都可以帮我解决为什么第一个视频总是软件渲染？

编辑：我已经取得了一些进展

有时它以GPU模式启动，有时以软件启动。有没有什么可以导致这种情况？

Answer 1

Hacky但是它有效。

如果要进行软件渲染，请停止并重新启动视频，直到它在GPU上呈现为止。似乎只需要几次。

VideoTexture降级为软件在Air中渲染

1 个答案: