After applying this filter, the active layer or selection is rendered as through a glass brick wall.
If checked, parameter setting results are interactively displayed in preview. Scroll bars allow you to move around the image.
Sets tile width and length (10-50 pixels).
By default, width and height are linked, indicated by the chain symbol next to the input boxes. If you want to set width and height separately, click on that chain symbol to unlink them.