Hi Chris,
I don't know the source of error, I doubt this error has much to do
with anything you've done, especially as you've be able to pinpoint
the introduction of the OpenGL error to between 1.9.3 and 2.0.
To me this error report sounds like an value is being passed to OpenGL
that is not support by your OpenGL driver. This suggest that the OSG
using some OpenGL setting in one of its osg::StateAttribute that
aren't support in OpenGL 1.3 or at least Mesa's interpretation of it.
The question is what change broke things for you, there was almost two
months between 1.9.3 and 2.0 so there is quite a few things that might
be the cause, I can't think of any likely candidates off the top of my
head. To isolate the needle in a hay stack hunt, did you test any
versions between 1.9.3 and 2.0?
Upping the error checking regularity in osg::State might be useful.
Unfortunately there isn't an env var that you can just switch on, but
you can do it by changing some code, in src/osg/State.cpp change the
code in the State::State contuctor from :
#if 1
_checkGLErrors = ONCE_PER_FRAME;
#else
_checkGLErrors = ONCE_PER_ATTRIBUTE;
#endif
To
#if 0
_checkGLErrors = ONCE_PER_FRAME;
#else
_checkGLErrors = ONCE_PER_ATTRIBUTE;
#endif
This might provide a an error a bit closer to where it was generated.
Robert.
On 6/29/07, Chris and Heather Kosek <[EMAIL PROTECTED]> wrote:
Hello,
I want to first say thank-you for the help you have provided in the past
and congratulations on
2.0 and the Quick Start Guide. The Quick Start Guide has been helpful and
instructional to me.
Now my question: When using 2.0 examples I get the following warning which
I did
not see using osg 1.9.3 or osg 1.2
Warning: detected OpenGL error 'invalid value' after
RenderBin::draw(,)
What did I miss or what do I need to do? I have not seen anyone else
mention this, so I have
concluded it must be me.
glxinfo
direct rendring: Yes
OpenGL renderer string: Mesa DRI Intel(R) 845G 20040919 x86/MMX/SSE2
OpenGL version string: 1.3 Mesa 6.2.1
glu version: 1.3
cat /proc/version
Linux version 2.6.9-34.EL
gcc version 3.4.5 20051201
Red Hat 3.4.5-2
Thank you in advance for any help and again congratulations,
Chris
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