Huw Davies : gdi32: Add a fake 1-entry color table for 1-bpp ddbs.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: f53d73a017a4ca5682f6ae6d216d71828488eb21
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=f53d73a017a4ca5682f6ae6d21...

Author: Huw Davies <huw(a)codeweavers.com>
Date:   Fri Oct 21 14:52:34 2011 +0100

gdi32: Add a fake 1-entry color table for 1-bpp ddbs.

---

 dlls/gdi32/dib.c |   20 ++++++++++++++++++--
 1 files changed, 18 insertions(+), 2 deletions(-)

diff --git a/dlls/gdi32/dib.c b/dlls/gdi32/dib.c
index 550f099..8eba236 100644
--- a/dlls/gdi32/dib.c
+++ b/dlls/gdi32/dib.c
@@ -501,8 +501,24 @@ INT nulldrv_StretchDIBits( PHYSDEV dev, INT xDst, INT yDst, INT widthDst, INT he
     err = dev->funcs->pPutImage( dev, 0, clip, dst_info, &src_bits, &src, &dst, rop );
     if (err == ERROR_BAD_FORMAT)
     {
-        err = convert_bits( src_info, &src, dst_info, &src_bits, FALSE );
-        if (!err) err = dev->funcs->pPutImage( dev, 0, clip, dst_info, &src_bits, &src, &dst, rop );
+        /* 1-bpp destination without a color table requires a fake 1-entry table
+         * that contains only the background color */
+        if (dst_info->bmiHeader.biBitCount == 1 && !dst_info->bmiHeader.biClrUsed)
+        {
+            COLORREF color = GetBkColor( dev->hdc );
+            dst_info->bmiColors[0].rgbRed      = GetRValue( color );
+            dst_info->bmiColors[0].rgbGreen    = GetGValue( color );
+            dst_info->bmiColors[0].rgbBlue     = GetBValue( color );
+            dst_info->bmiColors[0].rgbReserved = 0;
+            dst_info->bmiHeader.biClrUsed = 1;
+        }
+
+        if (!(err = convert_bits( src_info, &src, dst_info, &src_bits, FALSE )))
+        {
+            /* get rid of the fake 1-bpp table */
+            if (dst_info->bmiHeader.biClrUsed == 1) dst_info->bmiHeader.biClrUsed = 0;
+            err = dev->funcs->pPutImage( dev, 0, clip, dst_info, &src_bits, &src, &dst, rop );
+        }
     }
 
     if (err == ERROR_TRANSFORM_NOT_SUPPORTED)