Gaussian Blur and Feather drew through a filter layer whose blur works on
a coarser grid tied to the canvas: the blurred art moved by up to about
a pixel, and its steps showed, as the view moved by parts of a pixel
(scrolling, zooming about the pointer). They now blur the content's own
pixels on the CPU, as the Photoshop-style effects already do: the same
look wherever the view is, cached while only the view moves.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
