/// <summary>
/// Queue a rendertexture for readback. The readback will happen after the number of requests reaches the batchsize.
/// </summary>
/// <param name="request">The request associated with this batch readback instance.</param>
/// <param name="channel">Which channel this readback is for.</param>
/// <param name="renderTexture">Render texture to readback.</param>
public void QueueReadback(AsyncRequest <CaptureCamera.CaptureState> request, CaptureCamera.Channel channel, RenderTexture renderTexture)
{
Debug.Assert(request.data.GetFunctor(channel) != null, $"QueueReadback request has no completion function for {channel} channel");
var rbr = GetReadBackRequestFromPool(request, channel, renderTexture);
_requestsBatch.Enqueue(rbr);
if (_requestsBatch.Count == BatchSize)
{
Flush();
}
}
ReadbackRequest GetReadBackRequestFromPool(AsyncRequest <CaptureCamera.CaptureState> request, CaptureCamera.Channel channel, RenderTexture renderTexture)
{
ReadbackRequest rbr;
if (_requestsPool.Count > 0)
{
rbr = _requestsPool.Dequeue();
}
else
{
rbr = new ReadbackRequest();
}
rbr.request = request;
rbr.channel = channel;
rbr.callback = request.data.SetFunctor(channel, null);
if (rbr.renderTexture == null ||
rbr.renderTexture.width != renderTexture.width ||
rbr.renderTexture.height != renderTexture.height ||
!rbr.renderTexture.CompareFormat(renderTexture.graphicsFormat))
{
rbr.renderTexture = new RenderTexture(renderTexture);
}
Graphics.Blit(renderTexture, rbr.renderTexture);
return(rbr);
}
