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gdi32: Force colors to black and white for 1-bpp source in AlphaBlend.

This commit is contained in:
Alexandre Julliard 2011-09-20 15:27:36 +02:00
parent fb4dc8a544
commit 514b006df2
1 changed files with 14 additions and 0 deletions
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14
dlls/gdi32/bitblt.c
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@ -293,6 +293,20 @@ BOOL nulldrv_AlphaBlend( PHYSDEV dst_dev, struct bitblt_coords *dst,
err = dst_dev->funcs->pBlendImage( dst_dev, dst_info, &bits, src, dst, func );
if (err == ERROR_BAD_FORMAT)
{
/* 1-bpp source without a color table uses black & white */
if (src_info->bmiHeader.biBitCount == 1 && !src_info->bmiHeader.biClrUsed)
{
src_info->bmiColors[0].rgbRed = 0;
src_info->bmiColors[0].rgbGreen = 0;
src_info->bmiColors[0].rgbBlue = 0;
src_info->bmiColors[0].rgbReserved = 0;
src_info->bmiColors[1].rgbRed = 0xff;
src_info->bmiColors[1].rgbGreen = 0xff;
src_info->bmiColors[1].rgbBlue = 0xff;
src_info->bmiColors[1].rgbReserved = 0;
src_info->bmiHeader.biClrUsed = 2;
}
err = convert_bits( src_info, src, dst_info, &bits );
if (!err) err = dst_dev->funcs->pBlendImage( dst_dev, dst_info, &bits, src, dst, func );
}