* [Bug 31013] [r300g][glsl] Textures are black in Xonotic with offset mapping - r300 FP: Compiler Error: r300_fragprog_emit.c::begin_tex(): Too many texture indirections
2010-10-20 21:04 [Bug 31013] New: [r300g][glsl] Textures are black in Xonotic with offset mapping - r300 FP: Compiler Error: r300_fragprog_emit.c::begin_tex(): Too many texture indirections bugzilla-daemon
@ 2010-10-20 21:05 ` bugzilla-daemon
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--- Comment #1 from Tomasz Czapiewski <xeros@irc.pl> 2010-10-20 14:05:28 PDT ---
Created an attachment (id=39596)
--> (https://bugs.freedesktop.org/attachment.cgi?id=39596)
Screenshot of the problem - xonotic000023.jpg
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2010-10-20 21:04 [Bug 31013] New: [r300g][glsl] Textures are black in Xonotic with offset mapping - r300 FP: Compiler Error: r300_fragprog_emit.c::begin_tex(): Too many texture indirections bugzilla-daemon
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--- Comment #2 from Tomasz Czapiewski <xeros@irc.pl> 2010-10-20 14:06:48 PDT ---
Created an attachment (id=39597)
--> (https://bugs.freedesktop.org/attachment.cgi?id=39597)
data/glsl/default.glsl - problematic shaders file
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^ permalink raw reply [flat|nested] 18+ messages in thread* [Bug 31013] [r300g][glsl] Textures are black in Xonotic with offset mapping - r300 FP: Compiler Error: r300_fragprog_emit.c::begin_tex(): Too many texture indirections
2010-10-20 21:04 [Bug 31013] New: [r300g][glsl] Textures are black in Xonotic with offset mapping - r300 FP: Compiler Error: r300_fragprog_emit.c::begin_tex(): Too many texture indirections bugzilla-daemon
2010-10-20 21:05 ` [Bug 31013] " bugzilla-daemon
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--- Comment #3 from Tomasz Czapiewski <xeros@irc.pl> 2010-10-20 14:08:49 PDT ---
Created an attachment (id=39598)
--> (https://bugs.freedesktop.org/attachment.cgi?id=39598)
glxinfo
Graphic card: ATI Radeon 9600 256MB AGP (RV350)
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^ permalink raw reply [flat|nested] 18+ messages in thread* [Bug 31013] [r300g][glsl] Textures are black in Xonotic with offset mapping - r300 FP: Compiler Error: r300_fragprog_emit.c::begin_tex(): Too many texture indirections
2010-10-20 21:04 [Bug 31013] New: [r300g][glsl] Textures are black in Xonotic with offset mapping - r300 FP: Compiler Error: r300_fragprog_emit.c::begin_tex(): Too many texture indirections bugzilla-daemon
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--- Comment #4 from Tomasz Czapiewski <xeros@irc.pl> 2010-10-20 14:14:38 PDT ---
Created an attachment (id=39600)
--> (https://bugs.freedesktop.org/attachment.cgi?id=39600)
RADEON_DEBUG=vp,fp log
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2010-10-20 21:04 [Bug 31013] New: [r300g][glsl] Textures are black in Xonotic with offset mapping - r300 FP: Compiler Error: r300_fragprog_emit.c::begin_tex(): Too many texture indirections bugzilla-daemon
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--- Comment #5 from Tomasz Czapiewski <xeros@irc.pl> 2010-10-20 14:19:32 PDT ---
Created an attachment (id=39601)
--> (https://bugs.freedesktop.org/attachment.cgi?id=39601)
RADEON_DEBUG=vp,fp log with both offset mapping and relief mapping
The RADEON_DEBUG=noops doesn't help either.
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^ permalink raw reply [flat|nested] 18+ messages in thread* [Bug 31013] [r300g][glsl] Textures are black in Xonotic with offset mapping - r300 FP: Compiler Error: r300_fragprog_emit.c::begin_tex(): Too many texture indirections
2010-10-20 21:04 [Bug 31013] New: [r300g][glsl] Textures are black in Xonotic with offset mapping - r300 FP: Compiler Error: r300_fragprog_emit.c::begin_tex(): Too many texture indirections bugzilla-daemon
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Tom Stellard <tstellar@gmail.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution| |INVALID
--- Comment #6 from Tom Stellard <tstellar@gmail.com> 2010-10-20 19:26:01 PDT ---
Your hardware is not capable of executing these shaders. The function
OffsetMapping (from data/glsl/default.glsl) has three texture look-ups that
depend on the value of the previous look-up. This function is being called by
two shaders that use its return value in a fourth texture look-up. This
creates four texture indirections, but this hardware only supports three. I
would recommend contacting the developers of this application and ask if they
can come up with an alternate shader.
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^ permalink raw reply [flat|nested] 18+ messages in thread* [Bug 31013] [r300g][glsl] Textures are black in Xonotic with offset mapping - r300 FP: Compiler Error: r300_fragprog_emit.c::begin_tex(): Too many texture indirections
2010-10-20 21:04 [Bug 31013] New: [r300g][glsl] Textures are black in Xonotic with offset mapping - r300 FP: Compiler Error: r300_fragprog_emit.c::begin_tex(): Too many texture indirections bugzilla-daemon
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--- Comment #7 from Tomasz Czapiewski <xeros@irc.pl> 2010-10-21 01:19:49 PDT ---
Thank you very much, I've reported it to game developers as suggested.
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^ permalink raw reply [flat|nested] 18+ messages in thread* [Bug 31013] [r300g][glsl] Textures are black in Xonotic with offset mapping - r300 FP: Compiler Error: r300_fragprog_emit.c::begin_tex(): Too many texture indirections
2010-10-20 21:04 [Bug 31013] New: [r300g][glsl] Textures are black in Xonotic with offset mapping - r300 FP: Compiler Error: r300_fragprog_emit.c::begin_tex(): Too many texture indirections bugzilla-daemon
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--- Comment #8 from Tomasz Czapiewski <xeros@irc.pl> 2010-10-21 12:59:21 PDT ---
Game developers have just checked that the same shader works on Windows on the
same chipset as mine and are suggesting that it might be "off-by-one in
counting the indirections".
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^ permalink raw reply [flat|nested] 18+ messages in thread* [Bug 31013] [r300g][glsl] Textures are black in Xonotic with offset mapping - r300 FP: Compiler Error: r300_fragprog_emit.c::begin_tex(): Too many texture indirections
2010-10-20 21:04 [Bug 31013] New: [r300g][glsl] Textures are black in Xonotic with offset mapping - r300 FP: Compiler Error: r300_fragprog_emit.c::begin_tex(): Too many texture indirections bugzilla-daemon
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--- Comment #9 from Alex Deucher <agd5f@yahoo.com> 2010-10-21 13:42:48 PDT ---
r3xx/r4xx actually supports 4 indirections, so if the current code is limiting
it to 3, it should be upped to 4. See US_CONFIG.NLEVEL
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2010-10-20 21:04 [Bug 31013] New: [r300g][glsl] Textures are black in Xonotic with offset mapping - r300 FP: Compiler Error: r300_fragprog_emit.c::begin_tex(): Too many texture indirections bugzilla-daemon
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Tomasz Czapiewski <xeros@irc.pl> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |REOPENED
Resolution|INVALID |
--- Comment #10 from Tomasz Czapiewski <xeros@irc.pl> 2010-10-21 14:43:54 PDT ---
I'm reopening this bug report as suggested that my hardware supports 4
indirections but driver limits it to 3.
Btw, I've tried the modified shader with 3 indirections and then offset mapping
worked properly but it's just a temporary build for test and it won't be
included in official game source.
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^ permalink raw reply [flat|nested] 18+ messages in thread* [Bug 31013] [r300g][glsl] Textures are black in Xonotic with offset mapping - r300 FP: Compiler Error: r300_fragprog_emit.c::begin_tex(): Too many texture indirections
2010-10-20 21:04 [Bug 31013] New: [r300g][glsl] Textures are black in Xonotic with offset mapping - r300 FP: Compiler Error: r300_fragprog_emit.c::begin_tex(): Too many texture indirections bugzilla-daemon
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From: bugzilla-daemon @ 2010-10-23 7:45 UTC (permalink / raw)
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--- Comment #11 from Tom Stellard <tstellar@gmail.com> 2010-10-23 00:45:06 PDT ---
(In reply to comment #9)
> r3xx/r4xx actually supports 4 indirections, so if the current code is limiting
> it to 3, it should be upped to 4. See US_CONFIG.NLEVEL
Isn't the level 3 indirection limited to reading from input registers?
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^ permalink raw reply [flat|nested] 18+ messages in thread* [Bug 31013] [r300g][glsl] Textures are black in Xonotic with offset mapping - r300 FP: Compiler Error: r300_fragprog_emit.c::begin_tex(): Too many texture indirections
2010-10-20 21:04 [Bug 31013] New: [r300g][glsl] Textures are black in Xonotic with offset mapping - r300 FP: Compiler Error: r300_fragprog_emit.c::begin_tex(): Too many texture indirections bugzilla-daemon
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From: bugzilla-daemon @ 2010-10-23 16:29 UTC (permalink / raw)
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--- Comment #12 from Alex Deucher <agd5f@yahoo.com> 2010-10-23 09:29:24 PDT ---
(In reply to comment #11)
> (In reply to comment #9)
> > r3xx/r4xx actually supports 4 indirections, so if the current code is limiting
> > it to 3, it should be upped to 4. See US_CONFIG.NLEVEL
>
> Isn't the level 3 indirection limited to reading from input registers?
I though you could have up to 4 indirections in addition to the input, but it's
been a while since I looked at 3xx. If the shader works on the same hw using
the proprietary driver, it would seem to indicate that was the case (barring
some other bug).
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^ permalink raw reply [flat|nested] 18+ messages in thread* [Bug 31013] [r300g][glsl] Textures are black in Xonotic with offset mapping - r300 FP: Compiler Error: r300_fragprog_emit.c::begin_tex(): Too many texture indirections
2010-10-20 21:04 [Bug 31013] New: [r300g][glsl] Textures are black in Xonotic with offset mapping - r300 FP: Compiler Error: r300_fragprog_emit.c::begin_tex(): Too many texture indirections bugzilla-daemon
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--- Comment #13 from Tom Stellard <tstellar@gmail.com> 2010-10-23 13:01:28 PDT ---
(In reply to comment #12)
>
> I though you could have up to 4 indirections in addition to the input, but it's
> been a while since I looked at 3xx. If the shader works on the same hw using
> the proprietary driver, it would seem to indicate that was the case (barring
> some other bug).
I looked at through the docs again, and I'm pretty sure you are right about
this. I think we need to start using the {ALU,TEXT}_OFFSET fields of
US_CODE_OFFSET, to give us the input + 4 indirections. I'll write a patch for
this.
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^ permalink raw reply [flat|nested] 18+ messages in thread* [Bug 31013] [r300g][glsl] Textures are black in Xonotic with offset mapping - r300 FP: Compiler Error: r300_fragprog_emit.c::begin_tex(): Too many texture indirections
2010-10-20 21:04 [Bug 31013] New: [r300g][glsl] Textures are black in Xonotic with offset mapping - r300 FP: Compiler Error: r300_fragprog_emit.c::begin_tex(): Too many texture indirections bugzilla-daemon
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From: bugzilla-daemon @ 2010-10-27 4:08 UTC (permalink / raw)
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--- Comment #14 from Tom Stellard <tstellar@gmail.com> 2010-10-26 21:08:20 PDT ---
(In reply to comment #13)
> (In reply to comment #12)
> >
> > I though you could have up to 4 indirections in addition to the input, but it's
> > been a while since I looked at 3xx. If the shader works on the same hw using
> > the proprietary driver, it would seem to indicate that was the case (barring
> > some other bug).
>
> I looked at through the docs again, and I'm pretty sure you are right about
> this. I think we need to start using the {ALU,TEXT}_OFFSET fields of
> US_CODE_OFFSET, to give us the input + 4 indirections. I'll write a patch for
> this.
Ok, so it looks like I was wrong about this. I input a shader with 4
indirections to the AMD Shader Analyzer and it crashed, so I'm pretty sure r300
is limited to 3 indirections. I'm guessing that the reason this works on
Windows with r300 hardware is because that driver has some sort of software
fall-back, which r300g doesn't have.
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2010-10-20 21:04 [Bug 31013] New: [r300g][glsl] Textures are black in Xonotic with offset mapping - r300 FP: Compiler Error: r300_fragprog_emit.c::begin_tex(): Too many texture indirections bugzilla-daemon
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--- Comment #15 from Tomasz Czapiewski <xeros@irc.pl> 2010-10-26 22:29:52 PDT ---
(In reply to comment #14)
>
> Ok, so it looks like I was wrong about this. I input a shader with 4
> indirections to the AMD Shader Analyzer and it crashed, so I'm pretty sure r300
> is limited to 3 indirections. I'm guessing that the reason this works on
> Windows with r300 hardware is because that driver has some sort of software
> fall-back, which r300g doesn't have.
So does fglrx on Linux have this software fall-back, too? As now it's been
confirmed that on fglrx on Linux it worked, too before fglrx dropped R300-R500
support.
And game developers have told me that this shader code was specially designed
for Radeon 9600 (RV350) with fglrx.
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2010-10-20 21:04 [Bug 31013] New: [r300g][glsl] Textures are black in Xonotic with offset mapping - r300 FP: Compiler Error: r300_fragprog_emit.c::begin_tex(): Too many texture indirections bugzilla-daemon
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To: dri-devel
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--- Comment #16 from Roland Scheidegger <sroland@vmware.com> 2010-10-27 06:43:24 PDT ---
> Ok, so it looks like I was wrong about this. I input a shader with 4
> indirections to the AMD Shader Analyzer and it crashed, so I'm pretty sure r300
> is limited to 3 indirections. I'm guessing that the reason this works on
> Windows with r300 hardware is because that driver has some sort of software
> fall-back, which r300g doesn't have.
I dunno maybe the driver does some tricks like trying to move out the
calculation leading to the first texture lookup back to the vertex shader? No
idea if that would actually work...
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2010-10-20 21:04 [Bug 31013] New: [r300g][glsl] Textures are black in Xonotic with offset mapping - r300 FP: Compiler Error: r300_fragprog_emit.c::begin_tex(): Too many texture indirections bugzilla-daemon
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From: bugzilla-daemon @ 2010-10-30 19:51 UTC (permalink / raw)
To: dri-devel
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Tomasz Czapiewski <xeros@irc.pl> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|REOPENED |RESOLVED
Resolution| |INVALID
--- Comment #17 from Tomasz Czapiewski <xeros@irc.pl> 2010-10-30 12:51:32 PDT ---
You were right, it was really too many indirections (game engine GLSL code has
changed but comment not) and current testing of last working fglrx for r300
cards on old Ubuntu 8.10 prove it - simmilar behaviour on fglrx and r300g. Some
time ago OffsetMapping could work on fglrx as it was using -1 indirections
compared to now. The simplified GLSL OffsetMapping code in game has been now
pushed to Xonotic git master and works again.
Sorry for mislead and yours occupied time trying to resolve a problem in bug
report which could not be fixed in driver.
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