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Removed unused function

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The earlier gdAlphaBlend() has been replaced with commit 1286d9e2, and has
been renamed to gdAlphaBlendOld(). The old function is, however, not used,
and after more than 9 years we're pretty sure we won't need it anymore.
This commit is contained in:
Christoph M. Becker 2016-09-15 13:04:30 +02:00
parent d6f9c49e89
commit 04b166a6c5
1 changed files with 0 additions and 23 deletions
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23
ext/gd/libgd/gd.c
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@ -2918,29 +2918,6 @@ int gdImageCompare (gdImagePtr im1, gdImagePtr im2)
return cmpStatus;
}
int
gdAlphaBlendOld (int dst, int src)
{
/* 2.0.12: TBB: alpha in the destination should be a
* component of the result. Thanks to Frank Warmerdam for
* pointing out the issue.
*/
return ((((gdTrueColorGetAlpha (src) *
gdTrueColorGetAlpha (dst)) / gdAlphaMax) << 24) +
((((gdAlphaTransparent - gdTrueColorGetAlpha (src)) *
gdTrueColorGetRed (src) / gdAlphaMax) +
(gdTrueColorGetAlpha (src) *
gdTrueColorGetRed (dst)) / gdAlphaMax) << 16) +
((((gdAlphaTransparent - gdTrueColorGetAlpha (src)) *
gdTrueColorGetGreen (src) / gdAlphaMax) +
(gdTrueColorGetAlpha (src) *
gdTrueColorGetGreen (dst)) / gdAlphaMax) << 8) +
(((gdAlphaTransparent - gdTrueColorGetAlpha (src)) *
gdTrueColorGetBlue (src) / gdAlphaMax) +
(gdTrueColorGetAlpha (src) *
gdTrueColorGetBlue (dst)) / gdAlphaMax));
}
int gdAlphaBlend (int dst, int src) {
int src_alpha = gdTrueColorGetAlpha(src);
int dst_alpha, alpha, red, green, blue;