[Bug 28994] New: [r300c] [r300g] skybox in ut2004 is not seamless

[Bug 28994] New: [r300c] [r300g] skybox in ut2004 is not seamless

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=28994

           Summary: [r300c] [r300g] skybox in ut2004 is not seamless
           Product: Mesa
           Version: git
          Platform: x86 (IA32)
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/DRI/r300
        AssignedTo: dri-devel@lists.freedesktop.org
        ReportedBy: aaalmosss@gmail.com


As the attached screenshot shows, the polygon onto which the sky is rendered
has sharp contours, which should not be visible at all.

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[Bug 28994] [r300c] [r300g] skybox in ut2004 is not seamless

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https://bugs.freedesktop.org/show_bug.cgi?id=28994

--- Comment #1 from Álmos <aaalmosss@gmail.com> 2010-07-09 13:07:44 PDT ---
Created an attachment (id=36928)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=36928)
sky

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[Bug 28994] [r300c] [r300g] skybox in ut2004 is not seamless

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https://bugs.freedesktop.org/show_bug.cgi?id=28994

--- Comment #2 from Jon Sturm <jasturm002@aol.com> 2010-07-10 08:07:05 PDT ---
This is also noticeable on my 2 rv730 cards so it seems to be a mesa or radeon
bug in general and not r300 specific.

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[Bug 28994] [r300c] [r300g] skybox in ut2004 is not seamless

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=28994

Marek Olšák <maraeo@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|Drivers/DRI/r300            |Drivers/Gallium/r300

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[Bug 28994] [r300c] [r300g] skybox in ut2004 is not seamless

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https://bugs.freedesktop.org/show_bug.cgi?id=28994

--- Comment #3 from Tom Stellard <tstellar@gmail.com> 2010-10-29 17:30:22 PDT ---
Is this still an issue in Mesa 7.9 or the latest version from git?

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[Bug 28994] [r300c] [r300g] skybox in ut2004 is not seamless

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https://bugs.freedesktop.org/show_bug.cgi?id=28994

--- Comment #4 from Álmos <aaalmosss@gmail.com> 2010-10-30 07:16:24 PDT ---
The problem still exists. Tested with latest version from git.

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[Bug 28994] [r300c] [r300g] skybox in ut2004 is not seamless

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https://bugs.freedesktop.org/show_bug.cgi?id=28994

--- Comment #5 from Marek Olšák <maraeo@gmail.com> 2010-12-17 05:50:14 PST ---
The skybox looks fine here, absolutely seamless.

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[Bug 28994] [r300c] [r300g] skybox in ut2004 is not seamless

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=28994

Marek Olšák <maraeo@gmail.com> changed:

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

--- Comment #6 from Marek Olšák <maraeo@gmail.com> 2010-12-17 09:34:00 PST ---
Closing as it works for me.

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[Bug 28994] [r300c] [r300g] skybox in ut2004 is not seamless

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=28994

Álmos <aaalmosss@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |REOPENED
         Resolution|WORKSFORME                  |

--- Comment #7 from Álmos <aaalmosss@gmail.com> 2010-12-17 10:49:58 PST ---
You were a bit hasty (less than 4 hours between the question and the bug
close?). Here it still looks exactly like on the attached screenshot. I also
checked it with softpipe, and that looks same as well.

BTW I found absolutely no docs about how to change the driver to softpipe from
r300g. After hours of googling the only clue I found was
'LIBGL_ALWAYS_SOFTWARE=1' in a comment on a phoronix forum.

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[Bug 28994] [r300c] [r300g] skybox in ut2004 is not seamless

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https://bugs.freedesktop.org/show_bug.cgi?id=28994

--- Comment #8 from Marek Olšák <maraeo@gmail.com> 2010-12-17 11:32:44 PST ---
(In reply to comment #7)
> You were a bit hasty (less than 4 hours between the question and the bug
> close?). Here it still looks exactly like on the attached screenshot. I also
> checked it with softpipe, and that looks same as well.

I wonder why the skybox renders correctly only on r5xx...

> 
> BTW I found absolutely no docs about how to change the driver to softpipe from
> r300g. After hours of googling the only clue I found was
> 'LIBGL_ALWAYS_SOFTWARE=1' in a comment on a phoronix forum.

Create an empty directory, add a swrast_dri.so symlink there that points to
swrastg_dri.so or whatever driver you need. Set LIBGL_DRIVERS_PATH for it to
contain the path to that directory. Every 3D application will then look for
$LIBGL_DRIVERS_PATH/r300_dri.so, which wouldn't be there. Then it will look for
$LIBGL_DRIVERS_PATH/swrast_dri.so and load it.

To get r300g:
LIBGL_DRIVERS_PATH=/home/..../mesa/lib/gallium glxinfo

To get r300c:
LIBGL_DRIVERS_PATH=/home/..../mesa/lib glxinfo

To get swrast:
ln -s /home/..../mesa/lib/swrast_dri.so /some-path/swrast_dri.so
LIBGL_DRIVERS_PATH=/some-path glxinfo

To get llvmpipe (assumming you build with --enable-gallium-llvm):
ln -s /home/..../mesa/lib/gallium/swrastg_dri.so /some-path/swrast_dri.so
LIBGL_DRIVERS_PATH=/some-path glxinfo

To get softpipe (assumming you build with --enable-gallium-llvm):
ln -s /home/..../mesa/lib/gallium/swrastg_dri.so /some-path/swrast_dri.so
LIBGL_DRIVERS_PATH=/some-path GALLIUM_DRIVER=softpipe glxinfo

Or you may use LIBGL_ALWAYS_SOFTWARE, but I don't use that.

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[Bug 28994] [r300c] [r300g] skybox in ut2004 is not seamless

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https://bugs.freedesktop.org/show_bug.cgi?id=28994

--- Comment #9 from Álmos <aaalmosss@gmail.com> 2010-12-17 13:21:36 PST ---
(In reply to comment #8)
> I wonder why the skybox renders correctly only on r5xx...

Maybe you set world detail=low, which removes the clouds (and the visible
skybox)...

> 
> > 
> > BTW I found absolutely no docs about how to change the driver to softpipe from
> > r300g. After hours of googling the only clue I found was
> > 'LIBGL_ALWAYS_SOFTWARE=1' in a comment on a phoronix forum.
> 
> Create an empty directory, add a swrast_dri.so symlink there that points to
> swrastg_dri.so or whatever driver you need. Set LIBGL_DRIVERS_PATH for it to
> contain the path to that directory. Every 3D application will then look for
> $LIBGL_DRIVERS_PATH/r300_dri.so, which wouldn't be there. Then it will look for
> $LIBGL_DRIVERS_PATH/swrast_dri.so and load it.
> 
> .....
Neat trick. Should be added to a readme or fd.o wiki.

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[Bug 28994] [r300c] [r300g] skybox in ut2004 is not seamless

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https://bugs.freedesktop.org/show_bug.cgi?id=28994

--- Comment #10 from Marek Olšák <maraeo@gmail.com> 2010-12-17 13:31:22 PST ---
(In reply to comment #9)
> (In reply to comment #8)
> > I wonder why the skybox renders correctly only on r5xx...
> 
> Maybe you set world detail=low, which removes the clouds (and the visible
> skybox)...

I have "world detail" set to high.

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[Bug 28994] [r300c] [r300g] skybox in ut2004 is not seamless

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https://bugs.freedesktop.org/show_bug.cgi?id=28994

--- Comment #11 from Álmos <aaalmosss@gmail.com> 2010-12-17 14:15:16 PST ---
(In reply to comment #10)
> (In reply to comment #9)
> > (In reply to comment #8)
> > > I wonder why the skybox renders correctly only on r5xx...
> > 
> > Maybe you set world detail=low, which removes the clouds (and the visible
> > skybox)...
> 
> I have "world detail" set to high.

I'm out of ideas then. What's the situation on i965 or nouveau or r600g?

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[Bug 28994] [r300c] [r300g] skybox in ut2004 is not seamless

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https://bugs.freedesktop.org/show_bug.cgi?id=28994

--- Comment #12 from Álmos <aaalmosss@gmail.com> 2010-12-21 12:41:58 PST ---
> I wonder why the skybox renders correctly only on r5xx...

I found out what the possible difference is between our setups: you are running
it with UseVBO=False, and I'm running it with UseVBO=True in the UT2004.ini.
The former renders the sky correctly, the latter renders much faster.

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[Bug 28994] [r300c] [r300g] skybox in ut2004 is not seamless

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https://bugs.freedesktop.org/show_bug.cgi?id=28994

Álmos <aaalmosss@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|REOPENED                    |RESOLVED
         Resolution|                            |NOTOURBUG

--- Comment #13 from Álmos <aaalmosss@gmail.com> 2010-12-22 07:27:54 PST ---
Today I had the chance to try it on a geforce fx5200 with the blob driver, and
the skybox is visible on the torlan level with usevbo=true; thus, it is a bug
in the game. Sorry for the false alarm.

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