Tricking program into seeing actual gfx driver not WINE's

[Roderick Colenbrander]

Writing a Cuda wrapper itself is likely not that hard but Cuda can interact with OpenGL and Direct3D. In case of OpenGL you can let it write to buffers (VBOs, PBOs) and textures. Likely something similar for Direct3D is possible. Likely Nvidia is doing evil things behind the backs of D3D to make this possible and  I'm not sure if we can support this.

Roderick

> Actually we have quite a bit of code to tell the app more about the GPU
> and
> not just provide a generic wine one. This is needed because some games
> insist on a proper GPU PCI ID. We don't report and GPU-specific renderer
> strings yet, but that should be rather easy to add, if you look at the PCI
> ID reporting code. Currently you have to recompile for that, but you are
> welcome to send a patch that solves this problem in a generic way and send
> it to wine-patches.
> 
>  
> 
> The more troublesome problem is that Wine does not have any CUDA support
> at
> this point. The Windows CUDA DLL will not make you happy, because it talks
> to the Windows hardware drivers. Thus we need an implementation of this
> cudart.dll which calls the Linux cuda cudart.so instead. (And then hope it
> works out)
> 
>  
> 
> From: wine-devel-bounces at winehq.org [mailto:wine-devel-bounces at winehq.org]
> On Behalf Of Seth Shelnutt
> Sent: Thursday, July 03, 2008 10:24 PM
> To: wine-devel at winehq.org
> Subject: Tricking program into seeing actual gfx driver not WINE's
> 
>  
> 
> Hello All,
> 
> We have run into an interesting problem while trying to get the latest
> version of Stanford's Folding at Home GPU client to work in Linux via
> WINE.
> The programs says it does not detect a compatible GPU. Even when the user
> has installed the correct Nvidia drivers (with CUDA support)  and has a
> compatible GPU. The problem I believe lies in  the fact that the program
> is
> not told that there is a Nvidia 8800 installed, instead by the nature of
> WINE it see that  "WINE" is the graphics card, as WINE first translate the
> direct3d calls into opengl calls that are then passed on to the GPU. So
> the
> question is, is it possible to trick programs into believing they are
> running on the right hardware? (As in fact they are).
> 
> I remember a while ago the steam system spec survey was used to see how
> many
> people run steam via WINE. This was done by noting the graphics driver
> installed and how the wine one appeared when running WINE. Well this is
> fine
> but what we need is a way to make the program to see that it is actually
> running on Nvidia hardware. Because if the client would just start then
> the
> direct3d calls can be translated into opengl calls and the Nvidia linux
> drivers can then handle them and run it all fine and dandy.
> 
> Here is the post, with error message about wrong graphics card detected,
> http://www.ocforums.com/showpost.php?p=5698997
> <http://www.ocforums.com/showpost.php?p=5698997&postcount=19>
> &postcount=19
> .
> 
> 
> Thanks,
> 
> Seth Shelnutt
> 

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