[Bug 35847] wined3d does not recognize cards newer than GTX 770

wine-bugs at winehq.org wine-bugs at winehq.org
Tue Apr 22 03:27:06 CDT 2014


http://bugs.winehq.org/show_bug.cgi?id=35847

--- Comment #5 from DL <dredgingthelake at gmail.com> ---
Okay, I've written a patch for the 690, 780M, 780TI, and Titan. However, there
seems to be VRAM related problem. The 780M has a memory size of 4096MB whereas
my card (780) has a memory size of 3072 MB. 

So I force enable the 780M using it's pci ID with VideoPCIDeviceID registry
entry to test the patch. As a consequence, I get out of memory errors. Fair
enough, perhaps its trying to use more memory then my actual hardware has. 

Here's the thing, if I force enable the PCI id for the Titan there are no
memory errors, despite the Titan having 6144 MB. If I then edit my patch to
give the Titan entry a VRAM size of 4096, the same problem occurs.
Alternatively, if I edit the 780M entry to use 6144, it starts working again.

My theory is that Wine is ignoring VRAM sizes greater than a certain size, and
that is the explanation for not getting out of memory errors with 6144 MB of
ram.

Anyway, I've attached the patch to see if I'm not completely off base or if I'
ve made an obvious error.

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