git.y1.nz

commit 779ffe3e1ba5af43675db8251ec5b481d5c04a3d
parent ab07f955e4cc427d54886899af8335ff16120500
Author: Lior Halphon <LIJI32@gmail.com>
Date:   Wed,  3 Aug 2022 01:06:34 +0300

Fix desaturation

Diffstat:
M
Core/display.c
22
+++++++++++-----------

1 file changed, 11 insertions(+), 11 deletions(-)
diff --git a/Core/display.c b/Core/display.c
@@ -305,12 +305,12 @@ uint32_t GB_convert_rgb15(GB_gameboy_t *gb, uint16_t color, bool for_border)
             new_b = b;
             if (gb->color_correction_mode == GB_COLOR_CORRECTION_REDUCE_CONTRAST) {
                 r = new_r;
-                g = new_r;
-                b = new_r;
+                g = new_g;
+                b = new_b;
                 
-                new_r = new_r * 7 / 8 + (    g + b) / 16;
-                new_g = new_g * 7 / 8 + (r   +   b) / 16;
-                new_b = new_b * 7 / 8 + (r + g    ) / 16;
+                new_r = new_r * 15 / 16 + (    g + b) / 32;
+                new_g = new_g * 15 / 16 + (r   +   b) / 32;
+                new_b = new_b * 15 / 16 + (r + g    ) / 32;
                 
                 if (agb) {
                     new_r = new_r * (224 - 40) / 255 + 20;
@@ -325,12 +325,12 @@ uint32_t GB_convert_rgb15(GB_gameboy_t *gb, uint16_t color, bool for_border)
             }
             else if (gb->color_correction_mode == GB_COLOR_CORRECTION_LOW_CONTRAST) {
                 r = new_r;
-                g = new_r;
-                b = new_r;
-                
-                new_r = new_r * 7 / 8 + (    g + b) / 16;
-                new_g = new_g * 7 / 8 + (r   +   b) / 16;
-                new_b = new_b * 7 / 8 + (r + g    ) / 16;
+                g = new_g;
+                b = new_b;
+
+                new_r = new_r * 15 / 16 + (    g + b) / 32;
+                new_g = new_g * 15 / 16 + (r   +   b) / 32;
+                new_b = new_b * 15 / 16 + (r + g    ) / 32;
                 
                 if (agb) {
                     new_r = new_r * (167 - 27) / 255 + 27;

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