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liyuqian 5449a14ac2 Remove layer integral offset snapping (flutter/engine#17712) 
This fixes https://github.com/flutter/flutter/issues/53288 and https://github.com/flutter/flutter/issues/41654. It removes the problematic `GetIntegralTransCTM`, but preserves the rect round-out in `RasterCacheResult::draw` for performance considerations: the average frame raster time doesn't change much but the worst frame raster time significantly regressed if rect round-out is removed. That's probably because a new shader needs to be compiled to draw raster cache with fractional offsets.
2020-04-16 15:41:07 -07:00
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src/flutter
Remove layer integral offset snapping (flutter/engine#17712)
2020-04-16 15:41:07 -07:00