[Bug 24406] Certain objects invisible in Recettear:An Item Shop's Tale

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=24406

--- Comment #6 from Jeremy Chin <winehq at rekless.fastmail.fm> 2010-12-11 05:15:21 CST ---
I've found what causes this bug. In order to see if the system is capable of
doing animated meshes, d3d calls GetDeviceCaps and makes sure
MaxVertexBlendMatrices is at least 2. Wine reports this number by checking if
the video card has ARB_VERTEX_BLEND, then reports GL_MAX_VERTEX_UNITS. The
problem is newer video cards don't report ARB_VERTEX_BLEND, only
ARB_VERTEX_PROGRAM[1].

I'll attached a patch that just makes this change, against wine 1.3.9. It
assumes a card that support ARB_VERTEX_PROGRAM will support multiple vertex
units, but as far as I know that's a fairly safe assumption.

It also fixes the other bug I mentioned before. When
IDirectXFileObject::GetName is called with a null buffer it's meant to provide
only the length of the data and return DXFILE_OK. Wine currently reports
DXFILEERR_BADVALUE.

[1]http://developer.nvidia.com/forums/index.php?s=1bda5c9c604dcbe8177f7e9bc324ef5f&showtopic=1338&pid=2857&st=0&#entry2857
[2]http://msdn.microsoft.com/en-us/library/bb174505(v=VS.85).aspx

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