protected override Tensor ApplyPadding(Tensor X, int[] pad, string kernelName, float constant = 0.0f)
{
Assert.AreEqual(pad.Length, 4);
var O = NewTensor(X.shape.ApplyBorder(pad));
var fn = BestKernel(ComputeKernelLibrary.Padding(X.shape, O.shape, kernelName));
fn.SetTensor("X", X.shape, Pin(X).buffer);
fn.SetTensor("O", O.shape, Pin(O).buffer);
fn.shader.SetInts("_Pad", pad);
if (kernelName == "Border2D")
{
// NOTE: negative "pad" variable will crop X tensor
int croppedWidth = X.width - Math.Max(0, -pad[2]);
int croppedHeight = X.height - Math.Max(0, -pad[3]);
var croppedSize = new int[] { 0, 0 };
croppedSize[0] = croppedWidth;
croppedSize[1] = croppedHeight;
fn.shader.SetInts("_Pool", croppedSize);
fn.shader.SetFloat("_Beta", constant);
}
fn.Dispatch();
return(O);
}