Hi Jan,

On 9/12/06, Jan Ciger <[EMAIL PROTECTED]> wrote:
> Sounds like a driver bug for sure.  Have you reported it to NVidia?

No, not yet - perhaps it would be better to for Don to re-open the
existing bug report?

Alas Don is away right now so I can't say.

This is a different bug than the function not working as it should, rather its hanging, a more serious problem that warrents prompt attention.

> Perhaps one could disable the use of this call via an Producer option, but
> this a really hacky workaround for a bug in a driver.  For the 1.2 I'll
> just
> go with what we have

Well, that means that OSG 1.2 will not run with SLI on Linux (it hangs).
There should be at least some env. variable or something to turn this
off - a kludge, I agree. With OSG this is possible to do using
OSG_GL_EXTENSION_DISABLE, but this doesn't work with Producer, obviously.

There is a balance between trying to accomodate every driver bug and keeping the code code clean and maintainable.  The proper fix is for NVidia to fix their drivers.  I am not about to add a cludge into Producer, while I might have write access it isn't my project.

I'm happy to run with 1.2 not working around this NVidia bug in their current drivers.  As long as the community is now aware of it then we can help others workaroud the problem.  It may be that the next NVidia driver release fixes this bug and 1.2 will work perfectly fine in SLI.

> Makes them all point back to the optimized version.

Yes, but then I have to link my external apps with the symlinked
libraries in the OSD build - make install "deploys" the libs and
everything in the /usr/local. Would it make sense to have a make
installdbg target to do the same for the debug libs? The point is that I
do not have to carry around the whole build with me to be able to debug
my OSG applications on my laptop, I just need the libs and the source.

You can always override the default install directory using parameters passed into make or
use env vars.  Try:

  make help


Robert.
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