[Webkit-unassigned] [Bug 181974] feFlood doesn't work when filter resolution is reduced

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Thu Feb 1 21:35:46 PST 2018


--- Comment #4 from Simon Fraser (smfr) <simon.fraser at apple.com> ---
I think the clamping logic in ImageBuffer is basically wrong. It all works on FloatSizes, but ImageBuffers are allocated with integral numbers of pixels (despite taking FloatSize in the constructor). Also, clients can take a FloatRect and call enclosingIntRect() on it, potentially increasing the size by to 2px in each dimension.

So the ImageBuffer::sizeNeedsClamping() logic is suspect.

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