gdi32: Always dither brush when painting to a 1-bpp device.

dlls/gdi32/dibdrv/objects.c

@@ -1933,7 +1933,7 @@ static BOOL select_pattern_brush( dibdrv_physdev *pdev, dib_brush *brush, BOOL *
     BITMAPINFO *info = (BITMAPINFO *)buffer;
     RGBQUAD color_table[2];
     dib_info pattern;
-    BOOL dither = (brush->dib.bit_count == 1);
+    BOOL dither = (brush->dib.bit_count == 1) || (pdev->dib.bit_count == 1);
 
     if (brush->pattern.info->bmiHeader.biClrUsed && brush->pattern.usage == DIB_PAL_COLORS)
     {

dlls/gdi32/tests/dib.c

@@ -1753,7 +1753,7 @@ static void draw_graphics(HDC hdc, const BITMAPINFO *bmi, BYTE *bits)
             y += 25;
         }
     }
-    compare_hash_broken_todo(hdc, bmi, bits, "top-down 8888 dib brush patblt", 0, dib_is_1bpp);
+    compare_hash(hdc, bmi, bits, "top-down 8888 dib brush patblt");
 
     SelectObject(hdc, orig_brush);
     DeleteObject(dib_brush);