Ejemplo n.º 1
0
        unsafe void Update()
        {
            if (_sourceTexture == null || !_sourceTexture.IsCreated())
            {
                return;
            }

            var w = _sourceTexture.width / 2;
            var h = _sourceTexture.height * (_alphaSupport ? 3 : 2) / 2;

            ReadbackBuffer buffer = null;

            if (_readbackQueue.Count > 0 && _readbackQueue.Peek().IsCompleted)
            {
                buffer   = _sending;
                _sending = _readbackQueue.Dequeue();

                // Wait for the plugin to complete the previous frame.
                NDI_SyncSender(_plugin);

                // Get the pointer to the data buffer, and give it to the plugin.
                NDI_SendFrame(
                    _plugin, (IntPtr)_sending.Data.GetUnsafePtr(),
                    _sourceTexture.width, _sourceTexture.height,
                    _alphaSupport ? FourCC.UYVA : FourCC.UYVY
                    );

                NDI_SyncSender(_plugin);

                // Dispose the buffer if it can't be reused.
                if (_sending.Source.count != w * h)
                {
                    NDI_SyncSender(_plugin); // Wait before disposing.
                    DisposeBuffer(_sending);
                    _sending = null;
                }
            }

            // Readback buffer allocation
            if (buffer == null)
            {
                buffer = new ReadbackBuffer(new ComputeBuffer(w * h, 4));
            }

            // Invoke the compute.
            _compute.SetTexture(0, "Source", _sourceTexture);
            _compute.SetBuffer(0, "Destination", buffer.Source);
            _compute.Dispatch(0, w / 8, _sourceTexture.height / 8, 1);

            if (_alphaSupport)
            {
                _compute.SetTexture(1, "Source", _sourceTexture);
                _compute.SetBuffer(1, "Destination", buffer.Source);
                _compute.Dispatch(1, w / 16, _sourceTexture.height / 8, 1);
            }

            // Push to the readback queue.
            buffer.RequestReadback();
            _readbackQueue.Enqueue(buffer);
        }
Ejemplo n.º 2
0
 void DisposeBuffer(ReadbackBuffer buffer)
 {
     buffer.Source.Dispose();
     buffer.Dispose();
 }