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Optimise CCT buffer

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This commit is contained in:
Blaz Kristan 2025-06-19 11:48:56 +02:00
parent 9dbd5f89b6
commit e2fd1559d2
1 changed files with 9 additions and 7 deletions
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16
wled00/FX_fcn.cpp
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@ -1591,7 +1591,11 @@ void WS2812FX::show() {
size_t diff = showNow - _lastShow;
size_t totalLen = getLengthTotal();
_pixelCCT = static_cast<uint8_t*>(d_malloc(totalLen * sizeof(uint8_t))); // allocate CCT buffer if necessary
// WARNING: as WLED doesn't handle CCT on pixel level but on Segment level instead
// we need to keep track of each pixel's CCT when blending segments (if CCT is present)
// and then set appropriate CCT from that pixel during paint (see below).
if ((hasCCTBus() || correctWB) && !cctFromRgb)
_pixelCCT = static_cast<uint8_t*>(d_malloc(totalLen * sizeof(uint8_t))); // allocate CCT buffer if necessary
if (_pixelCCT) memset(_pixelCCT, 127, totalLen); // set neutral (50:50) CCT
if (realtimeMode == REALTIME_MODE_INACTIVE || useMainSegmentOnly || realtimeOverride > REALTIME_OVERRIDE_NONE) {
@ -1612,16 +1616,14 @@ void WS2812FX::show() {
if (newBri != _brightness) BusManager::setBrightness(newBri);
// paint actuall pixels
// WARNING: as WLED doesn't handle CCT on pixel level but on Segment level instead
// we need to determine to which segment a pixel belongs (may belong to several!!!)
// and then set appropriate CCT from that segment for a particular pixel.
int oldCCT = Bus::getCCT(); // store original CCT value (since it is global)
// when cctFromRgb is true we implicitly calculate WW and CW from RGB values (cct==-1)
if (cctFromRgb) BusManager::setSegmentCCT(-1);
for (size_t i = 0; i < totalLen; i++) {
// when cctFromRgb is true we implicitly calculate WW and CW from RGB values (cct==-1)
// when correctWB is true setSegmentCCT() will convert CCT into K with which we can then
// correct/adjust RGB value according to desired CCT value, it will still affect actual WW/CW ratio
if (_pixelCCT) {
if (i == 0 || _pixelCCT[i-1] != _pixelCCT[i]) BusManager::setSegmentCCT(cctFromRgb ? -1 : _pixelCCT[i], correctWB);
if (_pixelCCT) { // cctFromRgb already exluded at allocation
if (i == 0 || _pixelCCT[i-1] != _pixelCCT[i]) BusManager::setSegmentCCT(_pixelCCT[i], correctWB);
}
BusManager::setPixelColor(getMappedPixelIndex(i), realtimeMode && arlsDisableGammaCorrection ? _pixels[i] : gamma32(_pixels[i]));
}