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This commit is contained in:
Ryan Oldenburg 2020-12-09 01:00:26 -06:00
parent 56dd24e2e9
commit 85b8967be1
1 changed files with 2 additions and 2 deletions

4
src/pixie/blends.nim
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@ -285,11 +285,11 @@ proc blendMask(a, b: ColorRGBA): ColorRGBA =
proc blendSubtractMask(a, b: ColorRGBA): ColorRGBA =
result = a
result.a = ((a.a.float32 / 255) * (1 - b.a.float32 / 255) * 255).uint8
result.a = max(0, (a.a.int32 * (255 - b.a.int32)) div 255).uint8
proc blendIntersectMask(a, b: ColorRGBA): ColorRGBA =
result = a
result.a = ((a.a.float32 / 255) * (b.a.float32 / 255) * 255).uint8
result.a = ((a.a.uint32 * (b.a.uint32)) div 255).uint8
proc blendExcludeMask(a, b: ColorRGBA): ColorRGBA =
result = a