Hi Wojciech,
I get the bad result, running on NVidia Quadro NVS 140M, Driver version
186.94, Windows 7 Enterprise 32bit.
Hi Robert and Community,
I am seeing strange problem with VBOs in OSG on Windows and several
NVidia boards and several driver versions. Basically a set of
geometries with certain certain number of vertices and texcoords are
drawn incorrectly when we use VBOs. When used with display lists they
are drawn correctly. I was unable to investigate if the problem is in
OSG or OpenGL or in my code. But I checked my code several times
already so I would like to hear your opinion what is this.
Could you guys check if this problem also happens in other systems ? I
have isolated the problem as deep as I could and created a set of
files that can be used to reproduce the issue. They just draw one quad
and one triangle over the quad. Both quad and triangle are colored
with red yellow magenta gradient. If all is ok - its hard to notice
the border between quad and triangle. If the problem shows up - quad
is either drawn in red or not drawn at all, so only a triangle is
drawn with gradient and nasty z-fighting between quad and triangle
can be observed.
I have prepared a modified osgViewer source which can be used to
reproduce the bug (run it without args). See attached screenshots for
correct and incorrect output. I will be grateful for some feedback on
this issue...
If someone is interested I may send "good" and "bad" model files too.
I have not attached them because they have 700 kb zipped.
Cheers & Thanks in advance,
Wojtek Lewandowski
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