Removed unused function

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.

diff --git a/ext/gd/libgd/gd.c b/ext/gd/libgd/gd.c
index 3568684c140a1de7d68aafa55fd44e732f2f1386..57c0aeafb10e68a5eeee1abb6555b904de222d55 100644 (file)
--- a/ext/gd/libgd/gd.c
+++ b/ext/gd/libgd/gd.c
@@ -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;