Dmitry Timoshkov : windowscodecs: WICConvertBitmapSource should ask IWICFormatConverter:: Initialize to use an optimized palette.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 603ac6ad218bbdf890feb8e1a655e57424007ef6
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=603ac6ad218bbdf890feb8e1a655e57424007ef6

Author: Dmitry Timoshkov <dmitry at baikal.ru>
Date:   Tue Feb  5 11:24:12 2019 +0800

windowscodecs: WICConvertBitmapSource should ask IWICFormatConverter::Initialize to use an optimized palette.

This matches Windows' behaviour, and makes a simple test application that
converts any WIC compatible RGB(A) source image to 8bppIndexed format work.

Signed-off-by: Dmitry Timoshkov <dmitry at baikal.ru>
Signed-off-by: Vincent Povirk <vincent at codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard at winehq.org>

---

 dlls/windowscodecs/info.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/dlls/windowscodecs/info.c b/dlls/windowscodecs/info.c
index d0c2c69..9bec30f 100644
--- a/dlls/windowscodecs/info.c
+++ b/dlls/windowscodecs/info.c
@@ -2523,7 +2523,7 @@ HRESULT WINAPI WICConvertBitmapSource(REFWICPixelFormatGUID dstFormat, IWICBitma
 
                     if (SUCCEEDED(res) && canconvert)
                         res = IWICFormatConverter_Initialize(converter, pISrc, dstFormat, WICBitmapDitherTypeNone,
-                            NULL, 0.0, WICBitmapPaletteTypeCustom);
+                            NULL, 0.0, WICBitmapPaletteTypeMedianCut);
 
                     if (FAILED(res) || !canconvert)
                     {