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wu_pixel small optimization

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5% faster
This commit is contained in:
Frank 2024-09-29 18:37:18 +02:00
parent 10d8cfde85
commit d3c401ed4e
1 changed files with 5 additions and 2 deletions
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7
wled00/FX_2Dfcn.cpp
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@ -704,11 +704,14 @@ void Segment::wu_pixel(uint32_t x, uint32_t y, CRGB c) { //awesome wu_pixel
WU_WEIGHT(ix, yy), WU_WEIGHT(xx, yy)}; WU_WEIGHT(ix, yy), WU_WEIGHT(xx, yy)};
// multiply the intensities by the colour, and saturating-add them to the pixels // multiply the intensities by the colour, and saturating-add them to the pixels
for (int i = 0; i < 4; i++) { for (int i = 0; i < 4; i++) {
CRGB led = getPixelColorXY((x >> 8) + (i & 1), (y >> 8) + ((i >> 1) & 1)); int wu_x = (x >> 8) + (i & 1); // precalculate x
int wu_y = (y >> 8) + ((i >> 1) & 1); // precalculate y
CRGB led = getPixelColorXY(wu_x, wu_y);
CRGB oldLed = led;
led.r = qadd8(led.r, c.r * wu[i] >> 8); led.r = qadd8(led.r, c.r * wu[i] >> 8);
led.g = qadd8(led.g, c.g * wu[i] >> 8); led.g = qadd8(led.g, c.g * wu[i] >> 8);
led.b = qadd8(led.b, c.b * wu[i] >> 8); led.b = qadd8(led.b, c.b * wu[i] >> 8);
setPixelColorXY(int((x >> 8) + (i & 1)), int((y >> 8) + ((i >> 1) & 1)), led); if (led != oldLed) setPixelColorXY(wu_x, wu_y, led); // don't repaint if same color
} }
} }
#undef WU_WEIGHT #undef WU_WEIGHT