Re: [PATCH v3 0/4] MR4888: wined3d: Avoid assuming the GL backend in (what can be) common code.

[Stefan Dösinger]

Oh and I believe part of the historic mess is that ddraw sets color keys per-surface, so on paper you might set a different key on a mipmap sublevel or cube face. Not that I expect that to do anything useful in practise.

test_ck_complex shows mipmap sub levels return DDERR_NOTONMIPMAPSUBLEVEL in ddraw7, but not earlier. I guess ddraw_surface_set_color_key() could use a FIXME for the !surface->is_root case...

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https://gitlab.winehq.org/wine/wine/-/merge_requests/4888#note_59256