init(device:)
Initializes a downwards 5-tap image pyramid with the default filter kernel and device.
Declaration
convenience init(device: any MTLDevice)Parameters
- device:
The device the filter will run on.
Return Value
A valid MPSImagePyramid object or nil, if failure.
Discussion
The filter kernel is the outer product of w = [1/16, 1/4, 3/8, 1/4, 1/16]^T, with itself.