mesa3d-dev

[Mesa3d-dev] initialization problem on VMS system

[<jo...@du...>]

Hi all,

I did not get any answers to my last posts over the last weeks concerning
an initialization problem on VMS systems and my proposed solution. (the trafic
on Mesa3d-dev is very low last weeks anyway). So
  -Is nobody (except me) getting my mails from the list?
  -Is nobody reading them?
  -Is nobody sending any answers to the list?
  -Do I have problems getting mails from the list?
  
             Jouk


Ceterum censeo tertium millennium post Christum natum anno MMI incepturum esse

>------------------------------------------------------------------------------<

  Jouk Jansen
		 
  jo...@hr...

  Technische Universiteit Delft        tttttttttt  uu     uu  ddddddd
  Nationaal centrum voor HREM          tttttttttt  uu     uu  dd    dd
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  Nederland                                tt      uu     uu  dd    dd
  tel. 31-15-2781536                       tt       uuuuuuu   ddddddd

>------------------------------------------------------------------------------<

[Mesa3d-dev] Re: [Mesa-dev] initialization problem on VMS system

[ralf w. <b_...@gm...>]

"Jacob (=Jouk) Jansen" wrote:
> 
> Hi all,
> 
> I did not get any answers to my last posts over the last weeks concerning
> an initialization problem on VMS systems and my proposed solution. (the trafic
> on Mesa3d-dev is very low last weeks anyway). So
>   -Is nobody (except me) getting my mails from the list?
>   -Is nobody reading them?
>   -Is nobody sending any answers to the list?
>   -Do I have problems getting mails from the list?
> 
>              Jouk

-Is anyone besides me got an Alpha ? :>
anyway.. i thought memory is cleared when allocated (security).
make it an #ifdef VMS and with + instead of - in front of the lines.
shouldnt brake anything, just a slowdown.

-- 
ralf willenbacher (bj...@oc...)

Re: [Mesa3d-dev] initialization problem on VMS system

[Brian P. <br...@pr...>]

"Jacob (=Jouk) Jansen" wrote:
> 
> Hi all,
> 
> I did not get any answers to my last posts over the last weeks concerning
> an initialization problem on VMS systems and my proposed solution. (the trafic
> on Mesa3d-dev is very low last weeks anyway). So
>   -Is nobody (except me) getting my mails from the list?
>   -Is nobody reading them?
>   -Is nobody sending any answers to the list?
>   -Do I have problems getting mails from the list?

The whole PI team was out of town for a company meeting.  It'll be
a few days before I'm caught up on email.

-Brian

[Mesa3d-dev] OSMesaCreateContext missing in XFree86 4.0

[Howard <ho...@me...>]

Are OSMesaCreateContext, OSMesaDestroyContext and other OSMesa functions
intentionally excluded from the Mesa version included with XFree86 4.0?
The offscreen functions in general appear to be missing from XFree86 4.0
Mesa. Was this a design decision, or is this 4.0 release incomplete?

Also, is there any known reason why glXChooseVisual in XFree86 4.0 Mesa
would not find an XPixmap with RGB, depth and stencil?

We are on a Linux x86 libc6 based system, using a GForce 256 AGP card.

Thanks,
-- 
Howard Luby     ho...@me...,  Ph:(248)540-2251, Fax:(248)540-3138
Mediascape Corporation                         http://www.mediascape.com

Re: [Mesa3d-dev] OSMesaCreateContext missing in XFree86 4.0

[Brian P. <br...@pr...>]

Howard wrote:
> 
> Are OSMesaCreateContext, OSMesaDestroyContext and other OSMesa functions
> intentionally excluded from the Mesa version included with XFree86 4.0?
> The offscreen functions in general appear to be missing from XFree86 4.0
> Mesa. Was this a design decision, or is this 4.0 release incomplete?

OS/Mesa is not in XFree86 4.0 in any form.  However, this is something
I was thinking about yesterday and I think it would be possible to add
this feature to XFree86's libGL.  Basically, I'd provide a new library,
libOSMesa.so which you'd have to link with.  It would patch into the
libGL.so dispatcher and work like stand-alone Mesa.


> Also, is there any known reason why glXChooseVisual in XFree86 4.0 Mesa
> would not find an XPixmap with RGB, depth and stencil?
                    ^^^^^^^
You mean a GLXVisual, I think.

Use glxinfo to list your GLX visuals.  You might not have a stencil
buffer, I'd guess.


> We are on a Linux x86 libc6 based system, using a GForce 256 AGP card.

Using NVIDIA or the UtathGLX drivers?

In either case, your libGL doesn't have the OS/Mesa functionality.

-Brian

Re: [Mesa3d-dev] OSMesaCreateContext missing in XFree86 4.0

[Howard <ho...@me...>]

Harry Overs wrote:
> 
> My guess is that because you are using geforce mesa is replaced by the UTAH
> GLX which is based on SGI's OpenGL ???
> 
This seems to be the case. It looks like X 4.0 uses the SGI based glX,
which therefore excludes the OSMesa functions. We will need a hack in
this glX.

Brian Paul wrote:
> 
> OS/Mesa is not in XFree86 4.0 in any form.  However, this is something
> I was thinking about yesterday and I think it would be possible to add
> this feature to XFree86's libGL.  Basically, I'd provide a new library,
> libOSMesa.so which you'd have to link with.  It would patch into the
> libGL.so dispatcher and work like stand-alone Mesa.
> 
This would be ideal! Otherwise we would need a wrapper around the glX
dispatcher that would not be nearly as efficient.

> > Also, is there any known reason why glXChooseVisual in XFree86 4.0 Mesa
> > would not find an XPixmap with RGB, depth and stencil?
>                     ^^^^^^^
> You mean a GLXVisual, I think.
> 
Yes, right. It turns out that the request is sensitive to the single or
double buffer parameter, and it's only available in a double buffer for
some reason.

> Use glxinfo to list your GLX visuals.  You might not have a stencil
> buffer, I'd guess.
> 
It seems odd, but apparently our board only has stencils in double
buffer mode, according to glxinfo, or the current GeForce drivers only
support double buffered stencils.

> > We are on a Linux x86 libc6 based system, using a GForce 256 AGP card.
> 
> Using NVIDIA or the UtathGLX drivers?
> 
We are the drivers that are packaged with the current (March)
distribution of XFree86 4.0. So I think that means the UtahGLX.

-- 
Howard Luby     ho...@me...,  Ph:(248)540-2251, Fax:(248)540-3138
Mediascape Corporation                         http://www.mediascape.com

Re: [Mesa3d-dev] OSMesaCreateContext missing in XFree86 4.0

[Howard <ho...@me...>]

> Brian Paul wrote:
>
> OS/Mesa is not in XFree86 4.0 in any form.  However, this is something
> I was thinking about yesterday and I think it would be possible to add
> this feature to XFree86's libGL.  Basically, I'd provide a new library,
> libOSMesa.so which you'd have to link with.  It would patch into the
> libGL.so dispatcher and work like stand-alone Mesa.
> 
Brian,

Do you think this will happen? Now that we have a robust libGLU, the
only obstacle to writing a single port for all platforms is the addition
of the OSMesa enhancements to standard OpenGL. Are you planning to add
the libOSMesa.so you describe to XFree86 4.0?

Thanks,
-- 
Howard Luby     ho...@me...,  Ph:(248)540-2251, Fax:(248)540-3138
Mediascape Corporation                         http://www.mediascape.com

Re: [Mesa3d-dev] OSMesaCreateContext missing in XFree86 4.0

[Brian P. <br...@pr...>]

Howard wrote:
> 
> > Brian Paul wrote:
> >
> > OS/Mesa is not in XFree86 4.0 in any form.  However, this is something
> > I was thinking about yesterday and I think it would be possible to add
> > this feature to XFree86's libGL.  Basically, I'd provide a new library,
> > libOSMesa.so which you'd have to link with.  It would patch into the
> > libGL.so dispatcher and work like stand-alone Mesa.
> >
> Brian,
> 
> Do you think this will happen? Now that we have a robust libGLU, the
> only obstacle to writing a single port for all platforms is the addition
> of the OSMesa enhancements to standard OpenGL. Are you planning to add
> the libOSMesa.so you describe to XFree86 4.0?

Yes.  I got it up and working on Friday.  I've been out of town
since then and have a little bit of clean up left to do.

-Brian

Re: [Mesa3d-dev] OSMesaCreateContext missing in XFree86 4.0

[Howard <ho...@me...>]

Brian Paul wrote:
>
> > Do you think this will happen? Now that we have a robust libGLU, the
> > only obstacle to writing a single port for all platforms is the addition
> > of the OSMesa enhancements to standard OpenGL. Are you planning to add
> > the libOSMesa.so you describe to XFree86 4.0?
> 
> Yes.  I got it up and working on Friday.  I've been out of town
> since then and have a little bit of clean up left to do.
> 
Beautiful. Let us know as soon as we can try it.

Thanks,
-- 
Howard Luby     ho...@me...,  Ph:(248)540-2251, Fax:(248)540-3138
Mediascape Corporation                         http://www.mediascape.com

Re: [Mesa3d-dev] OSMesaCreateContext missing in XFree86 4.0

[Brian P. <br...@pr...>]

Howard wrote:
> 
> Brian Paul wrote:
> >
> > > Do you think this will happen? Now that we have a robust libGLU, the
> > > only obstacle to writing a single port for all platforms is the addition
> > > of the OSMesa enhancements to standard OpenGL. Are you planning to add
> > > the libOSMesa.so you describe to XFree86 4.0?
> >
> > Yes.  I got it up and working on Friday.  I've been out of town
> > since then and have a little bit of clean up left to do.
> >
> Beautiful. Let us know as soon as we can try it.

If you download and build the glxmisc-3-0-0-branch from the DRI CVS tree
you'll get it.  Simply relink your app with -lOSMesa -lGL.

-Brian

[Mesa3d-dev] Re: [Mesa-dev] OSMesaCreateContext missing in XFree86 4.0

[Harry O. <ho...@de...>]

My guess is that because you are using geforce mesa is replaced by the UTAH
GLX which is based on SGI's OpenGL ???

So new Mesa extra stuff


correct me if i'm wrong
----- Original Message -----
From: "Howard" <ho...@me...>
To: "Brian Paul" <br...@pr...>
Cc: <MES...@li...>; <MES...@me...>;
<XF...@XF...>
Sent: Wednesday, May 10, 2000 5:26 PM
Subject: [Mesa-dev] OSMesaCreateContext missing in XFree86 4.0


> Are OSMesaCreateContext, OSMesaDestroyContext and other OSMesa functions
> intentionally excluded from the Mesa version included with XFree86 4.0?
> The offscreen functions in general appear to be missing from XFree86 4.0
> Mesa. Was this a design decision, or is this 4.0 release incomplete?
>
> Also, is there any known reason why glXChooseVisual in XFree86 4.0 Mesa
> would not find an XPixmap with RGB, depth and stencil?
>
> We are on a Linux x86 libc6 based system, using a GForce 256 AGP card.
>
> Thanks,
> --
> Howard Luby     ho...@me...,  Ph:(248)540-2251, Fax:(248)540-3138
> Mediascape Corporation                         http://www.mediascape.com
>
>
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