gdiplus: In CompositingModeSourceCopy, fully transparent pixels are drawn black.

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=42585Signed-off-by: Damjan Jovanovic <damjan.jov@gmail.com> Signed-off-by: Vincent Povirk <vincent@codeweavers.com> Signed-off-by: Alexandre Julliard <julliard@winehq.org>

gdiplus: In CompositingModeSourceCopy, fully transparent pixels are drawn black.
99a17198 · Damjan Jovanovic · Alexandre Julliard · b21881f5 · 99a17198 · 99a17198
Commit 99a17198 authored Mar 05, 2020 by Damjan Jovanovic Committed by Alexandre Julliard Mar 05, 2020
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Showing with 7 additions and 2 deletions

graphics.c dlls/gdiplus/graphics.c +6 -1

image.c dlls/gdiplus/tests/image.c +1 -1

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--- a/dlls/gdiplus/graphics.c
+++ b/dlls/gdiplus/graphics.c
@@ -384,7 +384,12 @@ static GpStatus alpha_blend_bmp_pixels(GpGraphics *graphics, INT dst_x, INT dst_
            src_color = ((ARGB*)(src + src_stride * y))[x];

            if (comp_mode == CompositingModeSourceCopy)
-                GdipBitmapSetPixel(dst_bitmap, x+dst_x, y+dst_y, src_color);
+            {
+                if (!(src_color & 0xff000000))
+                    GdipBitmapSetPixel(dst_bitmap, x+dst_x, y+dst_y, 0);
+                else
+                    GdipBitmapSetPixel(dst_bitmap, x+dst_x, y+dst_y, src_color);
+            }
            else
            {
                if (!(src_color & 0xff000000))

--- a/dlls/gdiplus/tests/image.c
+++ b/dlls/gdiplus/tests/image.c
@@ -4491,7 +4491,7 @@ static void test_DrawImage_SourceCopy(void)
    expect(0, dst_pixels[0]);
    expect(0xffff0000, dst_pixels[1]);
    expect(0, dst_pixels[2]);
-    todo_wine expect(0, dst_pixels[3]);
+    expect(0, dst_pixels[3]);

    status = GdipDeleteGraphics(graphics);
    expect(Ok, status);