protected override Tensor CopyAndReshape(Tensor X, TensorShape newShape)
{
var copyShape = X.shape;
Assert.AreEqual(copyShape.length, newShape.length);
// NOTE: "Copy" kernel copies tensor data while preserving the shape
// However here in CopyAndReshape we want to both copy and change the shape,
// To be able to piggyback "Copy" kernel we specify new shape when allocating destination tensor,
// but use shape identical to source when copying.
var O = NewTensor(newShape);
var fn = BestKernel(ComputeKernelLibrary.Copy(copyShape, copyShape));
fn.SetTensor("X", copyShape, Pin(X).buffer);
fn.SetTensor("O", copyShape, Pin(O).buffer);
fn.shader.SetInts("_Pad", new int[] { 0, 0, 0, 0 });
fn.Dispatch();
return(O);
}
public override Tensor Concat(Tensor[] tensors, int axis)
{
var O = NewTensor(TensorExtensions.Concat(tensors.Select(t => t.shape).ToArray(), axis));
var offsets = new int[] { 0, 0, 0, 0 };
axis = O.shape.Axis(axis);
foreach (var X in tensors)
{
var fn = BestKernel(ComputeKernelLibrary.Copy(X.shape, O.shape));
fn.SetTensor("X", X.shape, Pin(X).buffer);
fn.SetTensor("O", O.shape, Pin(O).buffer);
fn.shader.SetInts("_Pad", offsets);
fn.Dispatch();
offsets[axis] += X.shape[axis];
}
return(O);
}