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fix indexing again, because apparently I'm bad at math now?

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atravita-mods 2022-08-23 14:34:23 -04:00 committed by Jesse Plamondon-Willard
parent a3b8546ec8
commit 496c438be2
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GPG Key ID: CF8B1456B3E29F49
1 changed files with 5 additions and 3 deletions
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8
src/SMAPI/Framework/Content/AssetDataForImage.cs
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@ -219,15 +219,17 @@ namespace StardewModdingAPI.Framework.Content
// merge pixels
for (int i = startIndex; i <= endIndex; i++)
{
int targetIndex = i - sourceoffset;
// ref locals here? Not sure.
Color above = sourceData[i];
Color below = mergedData[i - sourceoffset];
Color below = mergedData[targetIndex];
// shortcut transparency
if (above.A < MinOpacity)
continue;
if (below.A < MinOpacity || above.A == byte.MaxValue)
mergedData[i] = above;
mergedData[targetIndex] = above;
// merge pixels
else
@ -236,7 +238,7 @@ namespace StardewModdingAPI.Framework.Content
// premultiplied by the content pipeline. The formula is derived from
// https://blogs.msdn.microsoft.com/shawnhar/2009/11/06/premultiplied-alpha/.
float alphaBelow = 1 - (above.A / 255f);
mergedData[i] = new Color(
mergedData[targetIndex] = new Color(
r: (int)(above.R + (below.R * alphaBelow)),
g: (int)(above.G + (below.G * alphaBelow)),
b: (int)(above.B + (below.B * alphaBelow)),