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palette effect overflow fix

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TripleWhy 2024-12-27 11:19:24 +01:00
parent 88738327fd
commit 56e1d577fd
1 changed files with 1 additions and 1 deletions
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wled00/FX.cpp
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@ -2032,7 +2032,7 @@ uint16_t mode_palette() {
const mathType sourceX = xtSinTheta + ytCosTheta + centerX;
// The computation was scaled just right so that the result should always be in range [0, maxXOut], but enforce this anyway
// to account for imprecision. Then scale it so that the range is [0, 255], which we can use with the palette.
int colorIndex = (std::min(std::max(sourceX, mathType(0)), maxXOut * sInt16Scale) * 255) / (sInt16Scale * maxXOut);
int colorIndex = (std::min(std::max(sourceX, mathType(0)), maxXOut * sInt16Scale) * wideMathType(255)) / (sInt16Scale * maxXOut);
// inputSize determines by how much we want to scale the palette:
// values < 128 display a fraction of a palette,
// values > 128 display multiple palettes.