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Color correction improvements

This commit is contained in:
Lior Halphon 2022-07-24 23:57:29 +03:00
parent dd435ae5f0
commit bcfe36897c
1 changed files with 21 additions and 7 deletions
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28
Core/display.c
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@ -282,7 +282,7 @@ uint32_t GB_convert_rgb15(GB_gameboy_t *gb, uint16_t color, bool for_border)
if (gb->color_correction_mode != GB_COLOR_CORRECTION_CORRECT_CURVES) {
uint8_t new_r, new_g, new_b;
if (agb) {
new_g = (g * 6 + b * 1) / 7;
new_g = (g * 5 + b * 1) / 6;
}
else {
new_g = (g * 3 + b) / 4;
@ -298,9 +298,16 @@ uint32_t GB_convert_rgb15(GB_gameboy_t *gb, uint16_t color, bool for_border)
new_g = new_g * 7 / 8 + (r + b) / 16;
new_b = new_b * 7 / 8 + (r + g ) / 16;
new_r = new_r * (224 - 32) / 255 + 32;
new_g = new_g * (220 - 36) / 255 + 36;
new_b = new_b * (216 - 40) / 255 + 40;
if (agb) {
new_r = new_r * (224 - 40) / 255 + 20;
new_g = new_g * (220 - 36) / 255 + 18;
new_b = new_b * (216 - 32) / 255 + 16;
}
else {
new_r = new_r * (220 - 40) / 255 + 40;
new_g = new_g * (224 - 36) / 255 + 36;
new_b = new_b * (216 - 32) / 255 + 32;
}
}
else if (gb->color_correction_mode == GB_COLOR_CORRECTION_LOW_CONTRAST) {
r = new_r;
@ -311,9 +318,16 @@ uint32_t GB_convert_rgb15(GB_gameboy_t *gb, uint16_t color, bool for_border)
new_g = new_g * 7 / 8 + (r + b) / 16;
new_b = new_b * 7 / 8 + (r + g ) / 16;
new_r = new_r * (162 - 67) / 255 + 67;
new_g = new_g * (167 - 62) / 255 + 62;
new_b = new_b * (157 - 58) / 255 + 58;
if (agb) {
new_r = new_r * (167 - 27) / 255 + 27;
new_g = new_g * (165 - 24) / 255 + 24;
new_b = new_b * (157 - 22) / 255 + 22;
}
else {
new_r = new_r * (162 - 45) / 255 + 45;
new_g = new_g * (167 - 41) / 255 + 41;
new_b = new_b * (157 - 38) / 255 + 38;
}
}
else if (gb->color_correction_mode == GB_COLOR_CORRECTION_PRESERVE_BRIGHTNESS) {
uint8_t old_max = MAX(r, MAX(g, b));