From 24d5d722cf4ba0767eb0d790e1b228a518d737cf Mon Sep 17 00:00:00 2001
From: cristy <urban-warrior@git.imagemagick.org>
Date: Thu, 17 May 2012 12:27:27 +0000
Subject: [PATCH]

---
 MagickCore/composite.c | 17 +++++++++++------
 1 file changed, 11 insertions(+), 6 deletions(-)

diff --git a/MagickCore/composite.c b/MagickCore/composite.c
index 431949e2d..f3137f940 100644
--- a/MagickCore/composite.c
+++ b/MagickCore/composite.c
@@ -1577,8 +1577,14 @@ MagickExport MagickBooleanType CompositeImage(Image *image,
                 pixel=QuantumRange*Sa;
                 break;
               }
-              case CopyCompositeOp:
               case CopyAlphaCompositeOp:
+              {
+                pixel=QuantumRange*Sa;
+                if (composite_image->matte == MagickFalse)
+                  pixel=GetPixelIntensity(composite_image,p);
+                break;
+              }
+              case CopyCompositeOp:
               case DisplaceCompositeOp:
               case DistortCompositeOp:
               case DstAtopCompositeOp:
@@ -1757,8 +1763,7 @@ MagickExport MagickBooleanType CompositeImage(Image *image,
           case CopyAlphaCompositeOp:
           case IntensityCompositeOp:
           {
-            if (channel == AlphaPixelChannel)
-              pixel=(MagickRealType) GetPixelAlpha(composite_image,p);
+            pixel=Dc;
             break;
           }
           case CopyBlackCompositeOp:
@@ -1957,10 +1962,10 @@ MagickExport MagickBooleanType CompositeImage(Image *image,
           {
             if (Sc > Dc)
               {
-                pixel=QuantumRange*gamma*(Sa*Sc-Sa*Da*Dc+Da*Dc);
+                pixel=gamma*(Sa*Sc-Sa*Da*Dc+Da*Dc);
                 break;
               }
-            pixel=QuantumRange*gamma*(Da*Dc-Da*Sa*Sc+Sa*Sc);
+            pixel=gamma*(Da*Dc-Da*Sa*Sc+Sa*Sc);
             break;
           }
           case LightenIntensityCompositeOp:
@@ -2158,7 +2163,7 @@ MagickExport MagickBooleanType CompositeImage(Image *image,
           }
           case PlusCompositeOp:
           {
-            pixel=QuantumRange*gamma*(Sa*Sc+Da*Dc);
+            pixel=gamma*(Sa*Sc+Da*Dc);
             break;
           }
           case SaturateCompositeOp:
-- 
2.40.0