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Old 08-27-06, 04:23 PM   #1
tachyon_john
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Exclamation 1.0-8774 GLSL internal compiler errors

Hi,
The 8774 drivers fail to compile a shader, printing a large infolog with "internal compiler error" messages. The same shader compiled correctly with older driver versions, and with other video cards. The nvidia-bug-report.log file is too large for the forum's upload limit, so I've put it in zip/tar files along with test data to reproduce the problem, the shader compiler error messages, and the actual shader source code. The files are posted for you here, and include instructions:
http://www.ks.uiuc.edu/Research/vmd/alpha/test/

I also noted that the currently shipping Windows 91.31 drivers are similarly broken,
and my test dataset includes those results as well.

Thanks,
John Stone
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Old 08-27-06, 04:25 PM   #2
tachyon_john
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Exclamation Re: 1.0-8774 GLSL internal compiler errors

I forgot to add that I did these most recent tests with VMD 1.8.5, which is available for download on our web site here:
http://www.ks.uiuc.edu/Research/vmd/
http://www.ks.uiuc.edu/Development/D...ackageName=VMD

John Stone
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Old 08-27-06, 04:32 PM   #3
netllama
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Default Re: 1.0-8774 GLSL internal compiler errors

This sounds like a known bug which has been disussed in the past on other threads on this forum. Which older driver versions did not exhibit this behavior?
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Old 08-27-06, 06:19 PM   #4
tachyon_john
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Default Re: 1.0-8774 GLSL internal compiler errors

Lonni,
Yes, this is essentially the same as the bug I reported on 8756.
The older Linux 7676 drivers mostly worked (but they don't support the new cards).
The Windows XP 8421 drivers work correctly. The 91.31 and 91.33 Windows drivers
are both broken. Do you have any indication of what upcoming driver version(s)
will correct these problems? Now that the Windows drivers are in teh 9x.xx series, and I'm still seeing these problems there, I'm becoming concerned. If you have any suggestions for a workaround other than telling users to downgrade to 7676, I'd love to know.

Thanks,
John Stone
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Old 08-27-06, 06:40 PM   #5
netllama
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Default Re: 1.0-8774 GLSL internal compiler errors

When I last looked at this, the problem did not reproduce with an internal 1.0-9xxx series driver under Linux.

If you're seeing this problem with a Windows driver, then I'd suggest submitting the issue to the appropriate forum, as I'm afraid I can't do anything about Windows bugs.

Thanks,
Lonni
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Old 08-27-06, 08:45 PM   #6
tachyon_john
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Exclamation Re: 1.0-8774 GLSL internal compiler errors

Lonni,
Ok, I just wanted to be sure that there's some light at the end of the tunnel on the linux side since the 7676 drivers are archaic now and it's becoming harder to use that as a workaround since those drivers don't support the new cards. I would be willing to cycle through several of the 8xxx series drivers and see if any of them are usable, are they still available en-masse somewhere where I can download them all?

John Stone
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