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winex11: Copy the existing surface bits when a dirty rectangle is specified in UpdateLayeredWindow.

This commit is contained in:
Alexandre Julliard 2012-10-03 00:08:30 +02:00
parent 4ac1a5ac60
commit dbff4f422c
1 changed files with 18 additions and 9 deletions
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27
dlls/winex11.drv/window.c
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@ -2398,17 +2398,26 @@ BOOL CDECL X11DRV_UpdateLayeredWindow( HWND hwnd, const UPDATELAYEREDWINDOWINFO
if (!(hdc = CreateCompatibleDC( 0 ))) goto done;
SelectObject( hdc, dib );
if (!(ret = GdiAlphaBlend( hdc, rect.left, rect.top, rect.right - rect.left, rect.bottom - rect.top,
info->hdcSrc,
rect.left + (info->pptSrc ? info->pptSrc->x : 0),
rect.top + (info->pptSrc ? info->pptSrc->y : 0),
rect.right - rect.left, rect.bottom - rect.top,
(info->dwFlags & ULW_ALPHA) ? *info->pblend : blend )))
goto done;
surface->funcs->lock( surface );
memcpy( dst_bits, src_bits, bmi->bmiHeader.biSizeImage );
add_bounds_rect( surface->funcs->get_bounds( surface ), &rect );
if (info->prcDirty)
{
memcpy( src_bits, dst_bits, bmi->bmiHeader.biSizeImage );
PatBlt( hdc, rect.left, rect.top, rect.right - rect.left, rect.bottom - rect.top, BLACKNESS );
}
ret = GdiAlphaBlend( hdc, rect.left, rect.top, rect.right - rect.left, rect.bottom - rect.top,
info->hdcSrc,
rect.left + (info->pptSrc ? info->pptSrc->x : 0),
rect.top + (info->pptSrc ? info->pptSrc->y : 0),
rect.right - rect.left, rect.bottom - rect.top,
(info->dwFlags & ULW_ALPHA) ? *info->pblend : blend );
if (ret)
{
memcpy( dst_bits, src_bits, bmi->bmiHeader.biSizeImage );
add_bounds_rect( surface->funcs->get_bounds( surface ), &rect );
}
surface->funcs->unlock( surface );
surface->funcs->flush( surface );