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src/base/ftlcdfil.c

@@ -272,6 +272,8 @@
   {
     static const FT_Byte  light_filter[5] =
                             { 0, 85, 86, 85, 0 };
+    /* the values here sum up to a value larger than 256, */
+    /* providing a cheap gamma correction                 */
     static const FT_Byte  default_filter[5] =
                             { 0x10, 0x40, 0x70, 0x40, 0x10 };