From f5dc937a0d7dc41cbd6a8c7d777e5f2e9a9f6f7b Mon Sep 17 00:00:00 2001
From: Rasmus Lerdorf <rasmus@php.net>
Date: Thu, 31 Jul 2008 09:23:59 +0000
Subject: [PATCH] Fix for bug #45030

---
 ext/gd/libgd/gd.c     | 1 +
 ext/gd/libgd/gd_png.c | 7 ++++++-
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/ext/gd/libgd/gd.c b/ext/gd/libgd/gd.c
index 156031bd0c..ebfae80dcc 100644
--- a/ext/gd/libgd/gd.c
+++ b/ext/gd/libgd/gd.c
@@ -2613,6 +2613,7 @@ void gdImageCopyResampled (gdImagePtr dst, gdImagePtr src, int dstX, int dstY, i
 				green /= spixels;
 				blue /= spixels;
 				alpha /= spixels;
+				alpha += 0.5;
 			}
 			if ( alpha_sum != 0.0f) {
 				if( contrib_sum != 0.0f) {
diff --git a/ext/gd/libgd/gd_png.c b/ext/gd/libgd/gd_png.c
index a002a95212..7591dc0c67 100644
--- a/ext/gd/libgd/gd_png.c
+++ b/ext/gd/libgd/gd_png.c
@@ -689,7 +689,12 @@ void gdImagePngCtxEx (gdImagePtr im, gdIOCtx * outfile, int level, int basefilte
 					 */
 					a = gdTrueColorGetAlpha(thisPixel);
 					/* Andrew Hull: >> 6, not >> 7! (gd 2.0.5) */
-					*pOutputRow++ = 255 - ((a << 1) + (a >> 6));
+					if (a == 127) {
+						*pOutputRow++ = 0;
+					} else {
+						*pOutputRow++ = 255 - ((a << 1) + (a >> 6));
+					}
+
 				}
 			}
 		}
-- 
2.50.1