adafruit-mirror/Adafruit_Blinka_Raspberry_Pi5_Piomatter
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fix gamma curve, it was all broken!

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This commit is contained in:
Jeff Epler 2025-01-15 16:43:24 -06:00
parent ccd54d62cd
commit e315eeb3be
1 changed files with 1 additions and 1 deletions
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2
src/include/piomatter/render.h
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@ -18,7 +18,7 @@ constexpr uint32_t command_delay = 0;
struct gamma_lut {
gamma_lut(double exponent = 2.2) {
for (int i = 0; i < 256; i++) {
auto v = std::max(i, int(round(1023 * pow(i / 255, exponent))));
auto v = std::max(i, int(round(1023 * pow(i / 255., exponent))));
lut[i] = v;
}
}