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speed optimisations, fix for restoreColorLossy, code cleanup (#4895)

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- speed optimization in color_add, PS fast_color_add and blur functions
- applying more bit and shift manipulation tricks to squeeze out just a bit more speed on color manipulation functions.
- Optimization on blur is based on work by @blazoncek
- Renamed PS fast_color_add() to fast_color_scaleAdd()
This commit is contained in:
Damian Schneider
2025-09-23 20:15:42 +02:00
committed by GitHub
parent c6b4c77387
commit 8b3975752c
9 changed files with 138 additions and 149 deletions
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5
wled00/bus_manager.cpp
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@@ -233,6 +233,7 @@ void BusDigital::estimateCurrent() {
void BusDigital::applyBriLimit(uint8_t newBri) {
// a newBri of 0 means calculate per-bus brightness limit
_NPBbri = 255; // reset, intermediate value is set below, final value is calculated in bus::show()
if (newBri == 0) {
if (_milliAmpsLimit == 0 || _milliAmpsTotal == 0) return; // ABL not used for this bus
newBri = 255;
@@ -250,6 +251,7 @@ void BusDigital::applyBriLimit(uint8_t newBri) {
}
if (newBri < 255) {
_NPBbri = newBri; // store value so it can be updated in show() (must be updated even if ABL is not used)
uint8_t cctWW = 0, cctCW = 0;
unsigned hwLen = _len;
if (_type == TYPE_WS2812_1CH_X3) hwLen = NUM_ICS_WS2812_1CH_3X(_len); // only needs a third of "RGB" LEDs for NeoPixelBus
@@ -267,6 +269,7 @@ void BusDigital::applyBriLimit(uint8_t newBri) {
void BusDigital::show() {
if (!_valid) return;
_NPBbri = (_NPBbri * _bri) / 255; // total applied brightness for use in restoreColorLossy (see applyBriLimit())
PolyBus::show(_busPtr, _iType, _skip); // faster if buffer consistency is not important (no skipped LEDs)
}
@@ -329,7 +332,7 @@ uint32_t IRAM_ATTR BusDigital::getPixelColor(unsigned pix) const {
if (_reversed) pix = _len - pix -1;
pix += _skip;
const uint8_t co = _colorOrderMap.getPixelColorOrder(pix+_start, _colorOrder);
uint32_t c = restoreColorLossy(PolyBus::getPixelColor(_busPtr, _iType, (_type==TYPE_WS2812_1CH_X3) ? IC_INDEX_WS2812_1CH_3X(pix) : pix, co),_bri);
uint32_t c = restoreColorLossy(PolyBus::getPixelColor(_busPtr, _iType, (_type==TYPE_WS2812_1CH_X3) ? IC_INDEX_WS2812_1CH_3X(pix) : pix, co),_NPBbri);
if (_type == TYPE_WS2812_1CH_X3) { // map to correct IC, each controls 3 LEDs
uint8_t r = R(c);
uint8_t g = _reversed ? B(c) : G(c); // should G and B be switched if _reversed?