sepia-looks-awful.patch

diff --git a/src/cata_tiles.cpp b/src/cata_tiles.cpp
index e188928833..eabffcd0db 100644
--- a/src/cata_tiles.cpp
+++ b/src/cata_tiles.cpp
@@ -363,13 +363,13 @@ void tileset_loader::create_textures_from_tile_atlas( const SDL_Surface_Ptr &til
     copy_surface_to_texture( tile_atlas, offset, ts.tile_values );

     /** perform color filter conversion here */
-    copy_surface_to_texture( apply_color_filter( tile_atlas, color_pixel_grayscale ), offset,
+    copy_surface_to_texture( apply_color_filter( tile_atlas, color_pixel_memorized ), offset,
                              ts.shadow_tile_values );
     copy_surface_to_texture( apply_color_filter( tile_atlas, color_pixel_nightvision ), offset,
                              ts.night_tile_values );
     copy_surface_to_texture( apply_color_filter( tile_atlas, color_pixel_overexposed ), offset,
                              ts.overexposed_tile_values );
-    copy_surface_to_texture( apply_color_filter( tile_atlas, color_pixel_memorized ), offset,
+    copy_surface_to_texture( apply_color_filter( tile_atlas, color_pixel_grayscale ), offset,
                              ts.memory_tile_values );
 }

diff --git a/src/sdl_utils.h b/src/sdl_utils.h
index b2e9f4a3d3..6fe2fea748 100644
--- a/src/sdl_utils.h
+++ b/src/sdl_utils.h
@@ -102,21 +102,12 @@ inline SDL_Color color_pixel_memorized( const SDL_Color &color )
         return color;
     }

-    /*
-     *  Objective is to provide a gradient between two color points
-     *  (sepia_dark and sepia_light) based on the grayscale value.
-     *  This presents an effect intended to mimic a faded sepia photograph.
-     */
-
-    const SDL_Color sepia_dark = { 39, 23, 19, color.a};
-    const SDL_Color sepia_light = { 241, 220, 163, color.a};
-
-    const Uint8 av = average_pixel_color( color );
-    const float gammav = 1.6;
-    const float pv = av / 255.0;
-    const Uint8 finalv = std::min( int( round( pow( pv, gammav ) * 150 ) ), 100 );
-
-    return mix_colors( sepia_dark, sepia_light, finalv );
+    return {
+         std::max<Uint8>( 85 * color.r >> 8, 0x01 ),
+         std::max<Uint8>( 85 * color.g >> 8, 0x01 ),
+         std::max<Uint8>( 85 * color.b >> 8, 0x01 ),
+         color.a
+     };
 }

 SDL_Color curses_color_to_SDL( const nc_color &color );