Mesa3d: An implementation of the OpenGL API

Julien Cristau | 1 Jul 2007 11:11

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Re: Mesa 7.0 released

On Fri, Jun 22, 2007 at 16:57:18 -0600, Brian Paul wrote:

> 
> Mesa 7.0 can be downloaded from SF at 
> http://sourceforge.net/project/showfiles.php?group_id=3
> 
> This is a stable release that just fixes bugs since 6.5.3 (see the 
> release notes) and makes the OpenGL 2.1 API support official.
> 
Hi Brian,

apparently changing the major mesa version number changes the soname of
libOSMesa, when built as a shared library.  Is this an intended side
effect?  As far as I could gather from the list of exported symbols,
there doesn't seem to be any ABI change in libOSMesa between 6.5.3 and
7.0.

Cheers,
Julien

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bugzilla-daemon | 1 Jul 2007 11:33

[Bug 7459] GLX_USE_TLS breaks -fPIC build

http://bugs.freedesktop.org/show_bug.cgi?id=7459

eatnumber1 <at> gmail.com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |eatnumber1 <at> gmail.com

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bugzilla-daemon | 1 Jul 2007 15:41

[Bug 10995] Mesa causes killing of X11

http://bugs.freedesktop.org/show_bug.cgi?id=10995

------- Comment #3 from uzytkownik2 <at> gmail.com  2007-07-01 06:40 PST -------
(In reply to comment #2)
> I think this is an ubuntu bug, or at least was fixed in upstream Mesa since
> then, I see it in gutsy..
> 
> Probably better opening a launchpad bug...
> 

I don't use Ubuntu (Gentoo) -> It's not an ubuntu bug

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bugzilla-daemon | 2 Jul 2007 09:16

[Bug 11448] New: Clamp DEPTH_COMPONENT value too much times

http://bugs.freedesktop.org/show_bug.cgi?id=11448

           Summary: Clamp DEPTH_COMPONENT value too much times
           Product: Mesa
           Version: CVS
          Platform: Other
        OS/Version: Linux (All)
            Status: NEW
          Severity: minor
          Priority: low
         Component: Mesa core
        AssignedTo: mesa3d-dev <at> lists.sourceforge.net
        ReportedBy: nian.wu <at> intel.com
                CC: haihao.xiang <at> intel.com, wei.z.wang <at> intel.com

In function _mesa_unpack_depth_span (src/mesa/main/image.c), depth values are
clamped in macro DEPTH_VALUES, then clamp again in _mesa_scale_and_bias_depth
if ctx->Pixel.DepthScale != 1.0 || ctx->Pixel.DepthBias != 0.0. So DEPTH_VALUES
maybe clamped two times.

According to OpenGL spec, glDrawPixels will clamp color values in the last
step.
We need not clamp values in macro DEPTH_VALUES and we need clamp values after
_mesa_scale_and_bias_depth.

About change was introduced by commit bb02092d749ff9d58a13fd99f66154504b4f3dd1.

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Brian Paul | 2 Jul 2007 15:53

Re: Mesa 7.0 released

Julien Cristau wrote:
> On Fri, Jun 22, 2007 at 16:57:18 -0600, Brian Paul wrote:
> 
>> Mesa 7.0 can be downloaded from SF at 
>> http://sourceforge.net/project/showfiles.php?group_id=3
>>
>> This is a stable release that just fixes bugs since 6.5.3 (see the 
>> release notes) and makes the OpenGL 2.1 API support official.
>>
> Hi Brian,
> 
> apparently changing the major mesa version number changes the soname of
> libOSMesa, when built as a shared library.  Is this an intended side
> effect?  As far as I could gather from the list of exported symbols,
> there doesn't seem to be any ABI change in libOSMesa between 6.5.3 and
> 7.0.

There are no ABI changes in libOSMesa.  I didn't really think about the 
soname for that library when I bumped the version.  Is this causing a 
problem for you?

-Brian

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bugzilla-daemon | 2 Jul 2007 16:47

[Bug 11448] Clamp DEPTH_COMPONENT value too much times

http://bugs.freedesktop.org/show_bug.cgi?id=11448

brian.paul <at> tungstengraphics.com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED

------- Comment #1 from brian.paul <at> tungstengraphics.com  2007-07-02 07:47 PST -------
Fixed in git.

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Julien Cristau | 2 Jul 2007 20:17

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Re: Mesa 7.0 released

On Mon, Jul  2, 2007 at 07:53:11 -0600, Brian Paul wrote:

> Julien Cristau wrote:
>> Hi Brian,
>> apparently changing the major mesa version number changes the soname of
>> libOSMesa, when built as a shared library.  Is this an intended side
>> effect?  As far as I could gather from the list of exported symbols,
>> there doesn't seem to be any ABI change in libOSMesa between 6.5.3 and
>> 7.0.
>
> There are no ABI changes in libOSMesa.  I didn't really think about the 
> soname for that library when I bumped the version.  Is this causing a 
> problem for you?
>
Right now it's not really a problem because we don't seem to have any
packages dynamically linked against libOSMesa, so it won't break
anything.  If there were, we would have to either revert the soname
change in some way, or provide a compatibility libOSMesa.so.6 symlink.
In any case, maybe the mesa version number and OSMesa soname should be
made independant in the future?

Cheers,
Julien

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bugzilla-daemon | 3 Jul 2007 04:50

[Bug 11457] New: transfer op applied twice in draw_stencil_pixels()

http://bugs.freedesktop.org/show_bug.cgi?id=11457

           Summary: transfer op applied twice in draw_stencil_pixels()
           Product: Mesa
           Version: CVS
          Platform: Other
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Mesa core
        AssignedTo: mesa3d-dev <at> lists.sourceforge.net
        ReportedBy: nian.wu <at> intel.com

In src/mesa/swrast/s_drawpix.c/draw_stencil_pixels(), it calls
_mesa_unpack_index_span() firstly, then call
_mesa_apply_stencil_transfer_ops(). but _mesa_unpack_index_span() have called 
_mesa_apply_ci_transfer_ops() to transfer the index, so stencil index will be
transferred twice.

Another problem: should draw_stencil_pixels() call _mesa_unpack_stencil_span
instead of _mesa_unpack_index_span? Although they are similar.

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