Re: [PATCH] wined3d VideoRam registry setting

[Jonathan Ernst]

Le samedi 08 octobre 2005 à 10:47 +0900, Aric Cyr a écrit :
> This is a simple patch to add a registry setting for a user's video
> RAM which is used
> by wined3d.  Currently emulated_videoram is hardcoded at 64MB, which
> is not enough for some games and having to recompile wine to change it
> is a burden for end-users.  The new registry key is called
> HKCU\Software\Wine\Direct3D\VideoRam and is an integer in megabytes.

Hello

I guess it is not possible to retrieve the real value from the system ?

It would be nice to have this setting changeable in winecfg in the
future.

Bye.

[PATCH] wined3d VideoRam registry setting

[Aric Cyr]

On 10/8/05, Jonathan Ernst  wrote:
> Le samedi 08 octobre 2005 à 10:47 +0900, Aric Cyr a écrit :
> > This is a simple patch to add a registry setting for a user's video
> > RAM which is used
> > by wined3d.  Currently emulated_videoram is hardcoded at 64MB, which
> > is not enough for some games and having to recompile wine to change it
> > is a burden for end-users.  The new registry key is called
> > HKCU\Software\Wine\Direct3D\VideoRam and is an integer in megabytes.
>
> Hello
>
> I guess it is not possible to retrieve the real value from the system ?

Jonathan,

OpenGL does not have any standard features which allow querying of
total video memory.  It does allow you to see if a texture allocation
would succeed or fail, but that would mean allocating a lot of
textures on startup to determine the actual value then deallocating
them... not a particularly nice route.  If wine already knows this
value (which I doubt, since this code wouldn't exist if it did) then
we could use that.  I'm not familiar with any X calls that would give
us what we want either.  I'm open to suggestions though...  Cedega
also does it with a variable like this.
> It would be nice to have this setting changeable in winecfg in the
> future.

Agreed.  Since this is a registry key, I assume that it would be
pretty easy to add an extra setting in winecfg to configure this.  I
haven't taken a look at the winecfg code, so I'm not really sure what
would be required.

Cheers,
  Aric

--
Aric Cyr <Aric.Cyr at gmail dot com>    (http://acyr.net)

[PATCH] wined3d VideoRam registry setting

[Roderick Colenbrander]

Hi,
> > I guess it is not possible to retrieve the real value from the system ?
>
> Jonathan,
>
> OpenGL does not have any standard features which allow querying of
> total video memory.  It does allow you to see if a texture allocation
> would succeed or fail, but that would mean allocating a lot of
> textures on startup to determine the actual value then deallocating
> them... not a particularly nice route.  If wine already knows this
> value (which I doubt, since this code wouldn't exist if it did) then
> we could use that.  I'm not familiar with any X calls that would give
> us what we want either.  I'm open to suggestions though...  Cedega
> also does it with a variable like this.

In case of Nvidia hardware it is possible to query the amount of video
memory using the NV-CONTROL extension. If needed I could provide some code
for it. (wrote my own library for this a long time ago)

Regards,
Roderick