Question on Conformance Test
stefandoesinger at gmx.at
Wed Apr 27 17:28:08 CDT 2011
On Wednesday 27 April 2011 18:05:59 Austin English wrote:
> Normal practice is to try to match the XP+ behavior, and mark NT as
> broken if it differs.
In d3d we prefer results that some applications depend on. E.g. Windows XP has
pretty relaxed or no error checking on IDirect3DVertexBuffer9::Lock, even
though msdn says otherwise. Windows Vista added error checking as documented
in the msdn. There are a few games out there that depend on the lack of error
checking and crash on Windows Vista(or crashed at the time). We decided to
replicate the behavior that kept the games working in Wine and mark the
stricter check as broken()
If we don't know of any app that depends on the behavior we replicate the one
that is nicer from an API design point of view and mark the others with
If a result is clearly wrong(violates the docs, and doesn't make any sense) I
mark it as broken if we don't know any "mainstream" app that depends on
it(e.g. if the test was written to understand how something works).
Alternatively we may just get rid of the test. If there's a mainstream app(ie,
something you can buy in a shop, but not some random techdemo, tutorial or
demoscene stuff) that depends on the behavior and this app doesn't work on this
driver/Windows version I let the test fail. Sorry, your driver's broken, do
not pass go, do not collect $200, do not pass the tests. This mostly applies
to old hardware like my Radeon Mobility 9000, non-gaming hardware(Intel GPUs
to a certain extend, rare stuff like Matrox cards) or outdated drivers.
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