static void QueueForAsyncBatchReadback(AsyncRequest <CaptureState> req,
Channel channel,
Func <AsyncRequest <CaptureState>, AsyncRequest.Result> functor,
RenderTexture target)
{
Func <AsyncRequest <CaptureState>, AsyncRequest <CaptureState> .Result> wrapper;
wrapper = (AsyncRequest <CaptureState> r) =>
{
BatchReadback.Instance().QueueReadback(target, bytes =>
{
if (functor != null)
{
r.data.SetBuffer(channel, bytes);
r.Enqueue(functor);
r.Execute();
}
return(AsyncRequest.Result.Completed);
});
return(AsyncRequest.Result.Completed);
};
req.Enqueue(wrapper);
req.Execute(AsyncRequest.ExecutionContext.EndOfFrame);
}
/// <summary>
/// Invoke the request functor upon completion of the readback request.
/// </summary>
/// <param name="data"></param>
public void InvokeCallback(byte[] data)
{
Debug.Assert(data != null && data.Length != 0);
Debug.Assert(callback != null);
request.data.SetBuffer(channel, data);
request.Enqueue(callback);
request.Execute();
}
static void SetupCaptureRequest
(
AsyncRequest <CaptureState> req,
Channel channel,
Camera camera,
CameraEvent cameraEvent,
BuiltinRenderTextureType source,
GraphicsFormat format,
Func <AsyncRequest <CaptureState>, AsyncRequest <CaptureState> .Result> functor,
bool flipY
)
{
if (functor != null)
{
// declared for possible capture, to avoid use from other threads.
var cameraTargetTexture = camera.targetTexture;
RenderTexture target1 = null;
RenderTexture target2 = null;
Action ReleaseTargets = () =>
{
if (target1 != null && target1 != cameraTargetTexture)
{
RenderTexture.ReleaseTemporary(target1);
target1 = null;
}
if (target2 != null)
{
Debug.Assert(target2 != cameraTargetTexture);
RenderTexture.ReleaseTemporary(target2);
target2 = null;
}
};
Material depthMaterial = null;
if (source == BuiltinRenderTextureType.Depth)
{
depthMaterial = SelectDepthShaderVariant(format);
}
#if UNITY_2019_3_OR_NEWER
if (scriptableRenderPipeline)
{
if (CaptureOptions.useBatchReadback)
{
QueueForAsyncBatchReadback(req, channel, functor, SetupRenderTargets(ref target1, ref target2, camera, null, format, cameraTargetTexture, depthMaterial, flipY));
}
else
{
req.data.SetFunctor(channel, (AsyncRequest <CaptureState> r) =>
{
var target = SetupRenderTargets(ref target1, ref target2, camera, null, format, cameraTargetTexture, depthMaterial, flipY);
if (GraphicsUtilities.SupportsAsyncReadback())
{
AsyncGPUReadback.Request(target, 0, (AsyncGPUReadbackRequest request) =>
{
ReleaseTargets();
if (request.hasError)
{
req.error = true;
}
else
{
if (functor != null)
{
req.data.SetBuffer(channel, request.GetData <byte>().ToArray());
req.Enqueue(functor);
req.Execute();
}
}
});
}
else
{
r.data.SetBuffer(channel, GraphicsUtilities.GetPixelsSlow(target));
ReleaseTargets();
req.Enqueue(functor);
req.Execute();
}
return(AsyncRequest.Result.None);
});
}
}
else
#endif // UNITY_2019_3_OR_NEWER
{
req.data.SetFunctor(channel, functor);
CommandBuffer commandBuffer = GetCommandBufferForCamera(cameraEvent, camera);
commandBuffer.name = $"CaptureCamera.{channel.ToString()}";
var target = SetupRenderTargets(ref target1, ref target2, camera, commandBuffer, format, cameraTargetTexture, depthMaterial, flipY);
if (GraphicsUtilities.SupportsAsyncReadback())
{
#if UNITY_2019_3_OR_NEWER
if (CaptureOptions.useBatchReadback)
{
QueueForAsyncBatchReadback(req, channel, functor, target);
ReleaseTargets();
}
else
#endif
{
commandBuffer.RequestAsyncReadback(target, (AsyncGPUReadbackRequest request) =>
{
commandBuffer.Clear();
if (request.hasError)
{
req.error = true;
}
else
{
functor = req.data.SetFunctor(channel, null);
if (functor != null)
{
req.data.SetBuffer(channel, request.GetData <byte>().ToArray());
req.Enqueue(functor);
req.Execute();
}
}
ReleaseTargets();
});
}
}
else
{
Func <AsyncRequest <CaptureState>, AsyncRequest <CaptureState> .Result> wrapper;
#if UNITY_2019_3_OR_NEWER
if (CaptureOptions.useBatchReadback)
{
wrapper = (AsyncRequest <CaptureState> r) =>
{
BatchReadback.Instance().QueueReadback(target, data =>
{
r.data.SetBuffer(channel, data);
ReleaseTargets();
r.Enqueue(functor);
r.Execute();
return(AsyncRequest.Result.Completed);
});
return(AsyncRequest.Result.Completed);
};
}
else
#endif // UNITY_2019_3_OR_NEWER
{
wrapper = (AsyncRequest <CaptureState> r) =>
{
r.data.SetBuffer(channel, GraphicsUtilities.GetPixelsSlow(target));
ReleaseTargets();
r.Enqueue(functor);
r.Execute();
return(AsyncRequest.Result.Completed);
};
}
req.Enqueue(wrapper);
req.Execute(AsyncRequest.ExecutionContext.EndOfFrame);
}
}
}
}