Re: [PATCH v2] gdi32/tests: Add tests for the advanced graphics mode

[Francois Gouget]

On Tue, 9 Feb 2021, Ralf Habacker wrote:
> Because drawing simple lines already gives different results than a
> native Windows, the comparison of hashes does not work anymore.
>
> Therefore, the tests associated to advanced graphics mode creates
> bitmap files for each processed test in the current directoy, which
> can then be compared visually.

It looks like this is a prime candidate for winetest_interactive:

if (winetest_interactive)
{
   /* Tests that require a human to check the results */
   ...
}

So to get the bitmaps to compare one would run the test with 
set WINETEST_INTERACTIVE=1.

Note: Iirc C++ comments are not allowed in Wine's C code.