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Fixes issue in Dissolve when a palette has same color pixel as the current background color when Complete is enabled #5453

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Fixes issue in Dissolve when a palette has same color pixel as the current background color when Complete is enabled #5453

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Fixes issue in Dissolve when a palette has same color pixel as the cu…
BobLoeffler68 Mar 26, 2026
8dcd2d7
Made the fix for only when Complete is enabled.
BobLoeffler68 Mar 26, 2026
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5 changes: 4 additions & 1 deletion wled00/FX.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -687,6 +687,7 @@ static const char _data_FX_MODE_TWINKLE[] PROGMEM = "Twinkle@!,!;!,!;!;;m12=0";
* Dissolve function
*/
void dissolve(uint32_t color) {
if (SEGLEN < 1) FX_FALLBACK_STATIC;
unsigned dataSize = sizeof(uint32_t) * SEGLEN;
if (!SEGENV.allocateData(dataSize)) FX_FALLBACK_STATIC; //allocation failed
uint32_t* pixels = reinterpret_cast<uint32_t*>(SEGENV.data);
Expand All @@ -702,7 +703,9 @@ void dissolve(uint32_t color) {
unsigned i = hw_random16(SEGLEN);
if (SEGENV.aux0) { //dissolve to primary/palette
if (pixels[i] == SEGCOLOR(1)) {
pixels[i] = color == SEGCOLOR(0) ? SEGMENT.color_from_palette(i, true, PALETTE_SOLID_WRAP, 0) : color;
uint32_t c = color == SEGCOLOR(0) ? SEGMENT.color_from_palette(i, true, PALETTE_SOLID_WRAP, 0) : color;
if (c == SEGCOLOR(1)) c ^= 0x00000001; // change the color slightly so the effect doesn't get stuck in Complete mode if color is same as bkg color
pixels[i] = c;
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break; //only spawn 1 new pixel per frame
}
} else { //dissolve to secondary
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