Support EdgeMode in box_blur() / box_blur_loop()
While implementing edgeMode
in feGaussianBlur
for #969 (closed), I discovered that the multithreaded blurring functions in shared_surface.rs
don't support EdgeMode
. This is needed to support the edgeMode
attribute for "big" blurs, those that are not small convolutions but that are instead implemented as three box blurs.