Alexandre Julliard : gdi32: Always use the DIB engine for monochrome bitmap rendering.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: b81a7d976e3c3de36a01401d125871d3014e6c67
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=b81a7d976e3c3de36a01401d125871d3014e6c67

Author: Alexandre Julliard <julliard at winehq.org>
Date:   Fri May 25 11:47:46 2012 +0200

gdi32: Always use the DIB engine for monochrome bitmap rendering.

---

 dlls/gdi32/bitmap.c |    9 +++++++--
 1 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/dlls/gdi32/bitmap.c b/dlls/gdi32/bitmap.c
index 1a0e6bb..cc6a409 100644
--- a/dlls/gdi32/bitmap.c
+++ b/dlls/gdi32/bitmap.c
@@ -518,8 +518,13 @@ static HGDIOBJ BITMAP_SelectObject( HGDIOBJ handle, HDC hdc )
 
     if (dc->dibdrv) old_physdev = pop_dc_driver( dc, dc->dibdrv );
 
-    physdev = GET_DC_PHYSDEV( dc, pSelectBitmap );
-    createdev = GET_DC_PHYSDEV( dc, pCreateBitmap );
+    if (bitmap->dib.dsBm.bmBitsPixel > 1)
+    {
+        physdev = GET_DC_PHYSDEV( dc, pSelectBitmap );
+        createdev = GET_DC_PHYSDEV( dc, pCreateBitmap );
+    }
+    else physdev = createdev = &dc->nulldrv;  /* force use of the DIB engine for 1-bpp */
+
     if (physdev->funcs == &null_driver)
     {
         physdev = dc->dibdrv;