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prevent overflow in color_blend

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Frank
2024-10-23 14:22:57 +02:00
parent 855d61af4e
commit 4aa9c2607d
1 changed files with 1 additions and 1 deletions
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wled00/colors.cpp
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@@ -11,7 +11,7 @@ IRAM_ATTR_YN __attribute__((hot)) uint32_t color_blend(uint32_t color1, uint32_t
if(blend == 0) return color1;
if (color1 == color2) return color1; // WLEDMM shortcut
const uint_fast16_t blendmax = b16 ? 0xFFFF : 0xFF;
if(blend == blendmax) return color2;
if(blend >= blendmax) return color2;
const uint_fast8_t shift = b16 ? 16 : 8;
const uint_fast16_t blend2 = blendmax - blend; // WLEDMM pre-calculate value