premultipliedARGBFromColor 151 Source/platform/graphics/Color.h PLATFORM_EXPORT RGBA32 premultipliedARGBFromColor(const Color&); premultipliedARGBFromColor 158 Source/platform/graphics/Color.h Color premultFrom = from.alpha() ? premultipliedARGBFromColor(from) : 0; premultipliedARGBFromColor 159 Source/platform/graphics/Color.h Color premultTo = to.alpha() ? premultipliedARGBFromColor(to) : 0;