shithub: freetype+ttf2subf

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Minor.

git/fs: mount .git/fs: mount/attach disallowed

--- a/src/base/ftbitmap.c

+++ b/src/base/ftbitmap.c

@@ -394,9 +394,10 @@

      *

      * http://accessibility.kde.org/hsl-adjusted.php

      *

-     * We do the computation with integers only applying gamma of 2.0,

-     * The following will never overflow 32 bits. This is a scaled up

+     * We do the computation with integers only, applying a gamma of 2.0.

+     * The following will never overflow 32 bits; it is a scaled-up

      * luminosity with premultiplication not yet undone. 

+     *

      */

     l =  4731UL /* 0.0722 * 65536 */ * bgra[0] * bgra[0] +

@@ -404,7 +405,7 @@

         13933UL /* 0.2126 * 65536 */ * bgra[2] * bgra[2];

     /*

-     * Final transparency can be determined this way:

+     * Final transparency can be determined as follows.

      *

      * - If alpha is zero, we want 0.

      * - If alpha is zero and luminosity is zero, we want 255.

@@ -411,7 +412,9 @@

      * - If alpha is zero and luminosity is one, we want 0.

      *

      * So the formula is a * (1 - l) = a - l * a.

-     * Undoing premultiplication and scaling back down we get

+     *

+     * In the actual code, we undo premultiplication and scale down again.

+     *

      */

     return a - (FT_Byte)( ( l / a ) >> 16 );