[osg-users] Bug with applying global default attributes?

OpenSceneGraph Users osg-users at lists.openscenegraph.org
Thu Jan 30 00:09:14 PST 2020

Hi Rob,

Have you tried the 3.6 branch?  Is the issue a regression?

Could you provide a test model and screenshot of the results your are
getting vs expecting if possible.


On Wed, 29 Jan 2020 at 19:41, OpenSceneGraph Users <
osg-users at lists.openscenegraph.org> wrote:

> I have been testing with trunk and have only come across one problem so
> far (this might not be a new issue).
> I have a simple viewer set up with two nodes.  The first is loaded from
> an osgb.  Internally it sets the glBlendFunci(0, GL_MAX) via
> osg::BlendFunci.
> The second node also sets glBlendFunci(0, GL_MAX).  This is a geode with
> a geometry node under it.  I am setting the blend attributes on the
> geometry state set.
> At runtime the attribute on node two is set correctly but then
> immediately changed again by State::ApplyGlobalDefaultAttribute to
> GL_FUNC_ADD.  The blend equation is also stepped on in a similar way.  I
> am using apitrace to see the GL calls.
> GL_FUNC_ADD is not part of either node that I can see.  However, this
> problem does not occur with, for example, axes.osgt used as node one.
> I could use some advice on tracking down where this default value is
> coming from, and why it is overriding a specific node attribute like this.
> Thanks,
> Rob
> _______________________________________________
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> osg-users at lists.openscenegraph.org
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