Jim Graham cc929700b6 [Impeller] Add FilterContents::GetSourceCoverage to enable filtered saveLayer clipping. (flutter/engine#47183)
The new method allows a caller to ask for the coverage of the input pixels required to produce an output that spans a given area. This allows the code to clip a saveLayer that has an image filter applied to it.
2023-10-27 01:16:23 +00:00
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