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ketmar paeth fix

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Adam D. Ruppe 2016-04-24 08:38:57 -04:00
parent debd4fe356
commit 8a7886a63d
1 changed files with 2 additions and 2 deletions
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@ -1748,9 +1748,9 @@ immutable(ubyte)[] unfilter(ubyte filterType, in ubyte[] data, in ubyte[] previo
auto arr = data.dup; auto arr = data.dup;
foreach(i; 0 .. arr.length) { foreach(i; 0 .. arr.length) {
ubyte prev = i < bpp ? 0 : arr[i - bpp]; ubyte prev = i < bpp ? 0 : arr[i - bpp];
ubyte prevLL = i < bpp ? 0 : previousLine[i - bpp]; ubyte prevLL = i < bpp ? 0 : (i < previousLine.length ? previousLine[i - bpp] : 0);
arr[i] += PaethPredictor(prev, previousLine[i], prevLL); arr[i] += PaethPredictor(prev, (i < previousLine.length ? previousLine[i] : 0), prevLL);
} }
return assumeUnique(arr); return assumeUnique(arr);