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Subtle adjustments to dark pixels brightness #881

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Subtle adjustments to dark pixels brightness #881

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fb4f7ff
dark pulsing lights
Dec 6, 2023
0e772f0
12 bit with gamma lut
Dec 10, 2023
7bf03d9
comments about original version
Dec 10, 2023
4dd6a37
Refactoring code as header library
Dec 15, 2023
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20 changes: 19 additions & 1 deletion common/pimoroni_common.hpp
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Original file line number Diff line number Diff line change
Expand Up @@ -96,6 +96,24 @@ namespace pimoroni {
191, 193, 194, 196, 198, 200, 202, 204, 206, 208, 210, 212, 214, 216, 218, 220,
222, 224, 227, 229, 231, 233, 235, 237, 239, 241, 244, 246, 248, 250, 252, 255};

inline constexpr uint16_t GAMMA_12BIT[256] = {
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 43, 44, 45, 47, 48, 50,
52, 53, 55, 57, 59, 61, 63, 65, 68, 70, 72, 75, 78, 80, 83, 86,
89, 92, 95, 98, 102, 105, 109, 112, 116, 120, 124, 128, 132, 137, 141, 146,
150, 155, 160, 165, 170, 175, 181, 186, 192, 198, 204, 210, 216, 222, 228, 235,
242, 249, 256, 263, 270, 277, 285, 293, 301, 309, 317, 325, 334, 342, 351, 360,
369, 379, 388, 398, 408, 418, 428, 438, 449, 459, 470, 481, 493, 504, 516, 527,
539, 552, 564, 576, 589, 602, 615, 629, 642, 656, 670, 684, 698, 713, 727, 742,
758, 773, 789, 804, 820, 837, 853, 870, 887, 904, 921, 939, 957, 975, 993, 1011,
1030, 1049, 1068, 1088, 1107, 1127, 1147, 1168, 1189, 1209, 1231, 1252, 1274, 1296, 1318, 1340,
1363, 1386, 1409, 1432, 1456, 1480, 1504, 1529, 1554, 1579, 1604, 1630, 1656, 1682, 1708, 1735,
1762, 1789, 1817, 1845, 1873, 1901, 1930, 1959, 1988, 2018, 2048, 2078, 2109, 2139, 2171, 2202,
2234, 2266, 2298, 2331, 2364, 2397, 2430, 2464, 2498, 2533, 2568, 2603, 2638, 2674, 2710, 2747,
2784, 2821, 2858, 2896, 2934, 2973, 3011, 3050, 3090, 3130, 3170, 3210, 3251, 3292, 3334, 3376,
3418, 3461, 3504, 3547, 3591, 3635, 3679, 3724, 3769, 3814, 3860, 3906, 3953, 4000, 4047, 4095};

/* Moved from pico_unicorn.cpp
v = (uint16_t)(powf((float)(n) / 255.0f, 2.2) * 16383.0f + 0.5f) */
inline constexpr uint16_t GAMMA_14BIT[256] = {
Expand Down Expand Up @@ -147,4 +165,4 @@ namespace pimoroni {
bool_pair() : first(false), second(false) {}
bool_pair(bool first, bool second) : first(first), second(second) {}
};
}
}
2 changes: 1 addition & 1 deletion examples/pico_unicorn/demo.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -7,7 +7,7 @@

using namespace pimoroni;

PicoUnicorn pico_unicorn;
PicoUnicorn<14,1,0, uint16_t, pimoroni::GAMMA_14BIT> pico_unicorn;

int main() {
bool a_pressed = false;
Expand Down
4 changes: 2 additions & 2 deletions examples/pico_unicorn_plasma/demo.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -22,7 +22,7 @@ BSD License

using namespace pimoroni;

PicoUnicorn pico_unicorn;
PicoUnicorn<14,1,0, uint16_t, pimoroni::GAMMA_14BIT> pico_unicorn;

// Sine table to speed up execution
static const int8_t sinetab[256] = {
Expand Down Expand Up @@ -95,7 +95,7 @@ void from_hsv(float h, float s, float v, uint8_t &r, uint8_t &g, uint8_t &b) {

int main() {
stdio_init_all();
pico_unicorn.init();
// pico_unicorn.init();
pico_unicorn.clear();


Expand Down
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