better FillSolidBrushTests + bugfix in FillProcessor #555
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Prerequisites
Description
I just realized that
FillProcessorandFillRegionProcessorare two different things, so the tests in #553 do not coverFillProcessorthus are insufficient to safely merge #552.This PR:
SolidBrushscenarios/parametersFillProcessor: unlike inFillRegionProcessor,BlendPercentagewas applied two times: once inFillProcessor, once inSolidBrushApplicator. The easiest way to see this is to undo the change and runBlendFillColorOverBackround.