artemp 5414912160 + prevent division by zero in color-burn mode ... (FIXME: re-implement using latest(corrected) math from http://www.w3.org/TR/SVGCompositing/) + re-implemented grain-extract mode		2012-08-03 15:34:21 +01:00
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agg	+ prevent division by zero in color-burn mode	2012-08-03 15:34:21 +01:00