Dmitry Timoshkov : gdiplus: Round up when converting from 32-bit ARGB to PARGB.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: d23bfd8dfc74a1955a0270feaf07ccd7a23a723a
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=d23bfd8dfc74a1955a0270feaf...

Author: Dmitry Timoshkov 
Date:   Mon Feb 25 13:30:32 2013 +0800

gdiplus: Round up when converting from 32-bit ARGB to PARGB.

---

dlls/gdiplus/gdiplus.c     |    6 +++---
 dlls/gdiplus/tests/image.c |    1 -
 2 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/dlls/gdiplus/gdiplus.c b/dlls/gdiplus/gdiplus.c
index 1c016be..f199055 100644
--- a/dlls/gdiplus/gdiplus.c
+++ b/dlls/gdiplus/gdiplus.c
@@ -442,9 +442,9 @@ void convert_32bppARGB_to_32bppPARGB(UINT width, UINT height,
         for (x=0; x<width; x++)
         {
             BYTE alpha=src[3];
-            *dst++ = *src++ * alpha / 255;
-            *dst++ = *src++ * alpha / 255;
-            *dst++ = *src++ * alpha / 255;
+            *dst++ = (*src++ * alpha + 127) / 255;
+            *dst++ = (*src++ * alpha + 127) / 255;
+            *dst++ = (*src++ * alpha + 127) / 255;
             *dst++ = *src++;
         }
     }
diff --git a/dlls/gdiplus/tests/image.c b/dlls/gdiplus/tests/image.c
index a075b42..feab70b 100644
--- a/dlls/gdiplus/tests/image.c
+++ b/dlls/gdiplus/tests/image.c
@@ -4129,7 +4129,6 @@ static void test_ARGB_conversion(void)
     ok(data.Stride == 8, "expected 8, got %d\n", data.Stride);
     ok(data.PixelFormat == PixelFormat32bppPARGB, "expected PixelFormat32bppPARGB, got %d\n", data.PixelFormat);
     match = !memcmp(data.Scan0, pargb, sizeof(pargb));
-todo_wine
     ok(match, "bits don't match\n");
     if (!match)
     {