From: cristy <urban-warrior@git.imagemagick.org>
Date: Mon, 24 Oct 2011 17:51:16 +0000 (+0000)
Subject: (no commit message)
X-Git-Tag: 7.0.1-0~6750
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=902698c7f3368bc48ec96be9faf45dd6471942cc;p=imagemagick

---

diff --git a/MagickCore/pixel.c b/MagickCore/pixel.c
index 83c5332e9..2c0daa79f 100644
--- a/MagickCore/pixel.c
+++ b/MagickCore/pixel.c
@@ -5409,7 +5409,9 @@ MagickExport void SetPixelChannelMap(Image *image,
 
   for (i=0; i < (ssize_t) GetPixelChannels(image); i++)
     SetPixelChannelMapTraits(image,(PixelChannel) i,
-      GetChannelBit(channel_mask,i) != 0 ? UpdatePixelTrait : CopyPixelTrait);
+      GetChannelBit(channel_mask,i) == 0 ? CopyPixelTrait :
+      image->matte == MagickFalse ? UpdatePixelTrait :
+      UpdatePixelTrait | BlendPixelTrait);
   for ( ; i < MaxPixelChannels; i++)
     SetPixelChannelMapTraits(image,(PixelChannel) i,UndefinedPixelTrait);
   if (image->storage_class == PseudoClass)