[Bug 34206] New: [r300g] Unigine Sanctuary: glow around fires is distorted and displaced

[Bug 34206] New: [r300g] Unigine Sanctuary: glow around fires is distorted and displaced

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=34206

           Summary: [r300g] Unigine Sanctuary: glow around fires is
                    distorted and displaced
           Product: Mesa
           Version: git
          Platform: x86 (IA32)
               URL: http://unigine.com/download/#sanctuary
        OS/Version: Linux (All)
            Status: NEW
          Severity: minor
          Priority: medium
         Component: Drivers/Gallium/r300
        AssignedTo: dri-devel@lists.freedesktop.org
        ReportedBy: pavel.ondracka@email.cz


Created an attachment (id=43291)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=43291)
screenshot

There should be roughly spherical glow around candles and fires in Unigine
Sanctuary (at least that is how it looks with NVIDIA when the same settings is
used), but with r300g it is distorted and displaced and can only be viewed from
some angles. Also it is completely gone when RADEON_DEBUG=noopt or
RADEON_NO_TCL=1 is used. 

GPU: RV530
mesa: a6b7393eb8b4ef14c0d9ba8d64e57ed8ca82a9f7

Sanctuary version: 2.3
Unigine settings: all options disabled or set to lowest possible

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[Bug 34206] [r300g] Unigine Sanctuary: glow around fires is distorted and displaced

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=34206

--- Comment #1 from Pavel Ondračka <pavel.ondracka@email.cz> 2011-02-12 03:44:22 PST ---
Created an attachment (id=43292)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=43292)
output of RADEON_DEBUG=fp,vp and RADEON_DEBUG=fp,vp,noopt

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[Bug 34206] [r300g] Unigine Sanctuary: glow around fires is distorted and displaced

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=34206

--- Comment #2 from Pavel Ondračka <pavel.ondracka@email.cz> 2011-02-12 03:48:53 PST ---
Created an attachment (id=43293)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=43293)
screenshot with NVIDIA driver

This is how it looks like with proprietary drivers when the same settings are
used.

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[Bug 34206] [r300g] Unigine Sanctuary: glow around fires is distorted and displaced

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=34206

--- Comment #3 from Tom Stellard <tstellar@gmail.com> 2011-02-12 08:07:00 PST ---
Is this a regression?  Any chance you can bisect it?

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[Bug 34206] [r300g] Unigine Sanctuary: glow around fires is distorted and displaced

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=34206

--- Comment #4 from Pavel Ondračka <pavel.ondracka@email.cz> 2011-02-12 08:29:56 PST ---
(In reply to comment #3)
> Is this a regression?  Any chance you can bisect it?

No, I don't think so, I suppose this bug is present since Sanctuary 2.3 is
working (73e8a2738743035e1347571ba630747d2ec33a2d). I haven't spot this before
because this distorted glow wasn't present in the 2.2 version (the glow wasn't
present there at all like now when running with RADEON_DEBUG=noopt and there
were some others much more visible bugs at that time). 

However I'll try to manually apply 73e8a2738743035e1347571ba630747d2ec33a2d to
some older mesa versions to see if it was better at some time.

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[Bug 34206] [r300g] Unigine Sanctuary: glow around fires is distorted and displaced

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https://bugs.freedesktop.org/show_bug.cgi?id=34206

--- Comment #5 from Marek Olšák <maraeo@gmail.com> 2011-02-12 10:25:31 PST ---
I don't think it ever worked.

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[Bug 34206] [r300g] Unigine Sanctuary: glow around fires is distorted and displaced

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=34206

--- Comment #6 from Pavel Ondračka <pavel.ondracka@email.cz> 2011-02-12 11:26:59 PST ---
The distorted glow is present since "r300/compiler: use peephole and constant
folding for vertex shaders too", there was no glow at all before. So I suppose
this explains why there is no glow with noopt.

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[Bug 34206] [r300g] Unigine Sanctuary: glow around fires is distorted and displaced

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=34206

--- Comment #7 from Marek Olšák <maraeo@gmail.com> 2011-03-29 16:59:52 PDT ---
I think the glow is broken because the WPOS input is unassigned. Glow is a
screen-space effect and as such must either use (or emulate) gl_FragCoord.

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[Bug 34206] [r300g] Unigine Sanctuary: glow around fires is distorted and displaced

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=34206

Pavel Ondračka <pavel.ondracka@email.cz> changed:

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

--- Comment #8 from Pavel Ondračka <pavel.ondracka@email.cz> 2011-04-12 13:41:34 PDT ---
No glow at all with current mesa master and working glow with floating2 branch.
I consider this fixed.

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