From: mike@reedtribe.org <mike@reedtribe.org@2bbb7eff-a529-9590-31e7-b0007b416f81>
Date: Sun, 12 Aug 2012 19:08:41 +0000 (+0000)
Subject: revert arith change, until I can rebaseline all the images (and check chrome)
X-Git-Tag: accepted/tizen/5.0/unified/20181102.025319~15226
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=0e330ae5f90ef8a4a864329b9a634644a05bf124;p=platform%2Fupstream%2FlibSkiaSharp.git

revert arith change, until I can rebaseline all the images (and check chrome)



git-svn-id: http://skia.googlecode.com/svn/trunk@5044 2bbb7eff-a529-9590-31e7-b0007b416f81
---

diff --git a/src/effects/SkArithmeticMode.cpp b/src/effects/SkArithmeticMode.cpp
index cd3c31d..c999ce0 100644
--- a/src/effects/SkArithmeticMode.cpp
+++ b/src/effects/SkArithmeticMode.cpp
@@ -107,7 +107,14 @@ void SkArithmeticMode_scalar::xfer32(SkPMColor dst[], const SkPMColor src[],
                 b = blend(b, SkGetPackedB32(sc), scale);
             }
 
-            dst[i] = SkPremultiplyARGBInline(a, r, g, b);
+            // turn the result back into premul
+            if (0xFF != a) {
+                int scale = a + (a >> 7);
+                r = SkAlphaMul(r, scale);
+                g = SkAlphaMul(g, scale);
+                b = SkAlphaMul(b, scale);
+            }
+            dst[i] = SkPackARGB32(a, r, g, b);
         }
     }
 }