[PATCH 0/1] MR5816: wined3d: Implement wined3d_check_device_format_conversion().

[Elizabeth Figura (＠zfigura)]

This should reflect what we actually support, while still being a superset
of what native drivers actually support.

Native driver support varies, but, as the comments document, native drivers
(at least as of windows 10) support only RGB -> RGB, YUV -> RGB, and BC -> RGB
conversions. The actual formats supported are a more limited subset than exposed
(despite that the video cards should be perfectly capable of supporting more
conversions) but erring on the side of overreporting seems safer.