[osg-users] New glTexStorage code is disrupting FBO initialization

[Paul Levy]

Julien,

Thanks for looking into it.  I think there is a different problem as Glenn
mentioned.  All the examples that use COLOR_BUFFER0 are broken on my
system.  osgdeferred, osgSSBO, osgoit, etc are a few I tried.  Setting
OSG_GL_TEXTURE_STORAGE=OFF fixes the problem but as Glenn mentioned,
COLOR_BUFFER0 has worked in the past prior to texture storage.

Thank you
--
Paul Levy : Pelican Mapping


On Fri, Aug 10, 2018 at 3:16 PM Julien Valentin <julienvalentin51 at gmail.com>
wrote:

> I debugged osgprerender
> It was the unsized texture format:
> changing GL_RGBA to GL_RGBA8
> i'll patch the example
> but you have to patch osgearth
>
>
> gwaldron wrote:
> > Julian,New information: In osgEarth we use Camera::attach like so:
> >
> >
> >    rttCamera->attach(osg::Camera::COLOR_BUFFER0, texture);
> >
> >
> > If I replace COLOR_BUFFER0 with COLOR_BUFFER, it works. Been using the
> former since forever but maybe it was wrong.
> >
> >
> > Glenn Waldron
> >
> >
> >
> >
> >
> >
> >
> >
> > On Fri, Aug 10, 2018 at 12:39 PM Julien Valentin < ()> wrote:
> >
> >
> > > Hi
> > > It's weird that immutable texture interact with fbo render to texture.
> > > I've done a lot of FBORTT since this commit and haven't seen any
> problem
> > > Are you sure your problem come from here?
> > > Try to replicate the behavior in a simple example code please
> > >
> > > Cheers
> > >
> > >
> > > gwaldron wrote:
> > >
> > > > Robert,
> > > >
> > > >
> > > > We recently pulled the latest master branch of OpenSceneGraph, and
> found that FBOs in osgEarth no longer initialize properly. We narrowed the
> problem down to this commit which appears to introduce the usage of
> glTexStorage:
> > > >
> > > >
> > > >
> https://github.com/openscenegraph/OpenSceneGraph/commit/7be09e8dcd1ed63eb501c12bb7c8df6f6902783b
> (
> https://github.com/openscenegraph/OpenSceneGraph/commit/7be09e8dcd1ed63eb501c12bb7c8df6f6902783b)
> (
> https://github.com/openscenegraph/OpenSceneGraph/commit/7be09e8dcd1ed63eb501c12bb7c8df6f6902783b
> (
> https://github.com/openscenegraph/OpenSceneGraph/commit/7be09e8dcd1ed63eb501c12bb7c8df6f6902783b
> ))
> > > >
> > > >
> > > > We are seeing output like the following.
> > > >
> > > >
> > > > RenderStage::runCameraSetUp(), FBO setup failed, FBO status= 0x8cd6
> > > >
> > > > Warning: RenderStage::runCameraSetUp(State&) Pbuffer does not
> support multiple color outputs.
> > > > ContextData::incrementContextIDUsageCount(0) to 2
> > > > Warning: detected OpenGL error 'invalid enumerant' after applying
> attribute Viewport 000002517C076560
> > > > RenderStage::runCameraSetUp(), FBO setup failed, FBO status= 0x8cd6
> > > > Warning: RenderStage::runCameraSetUp(State&) Pbuffer does not
> support multiple color outputs.
> > > > ContextData::incrementContextIDUsageCount(0) to 3
> > > >
> > > >
> > > > The "osgprerender" example still seems to work but generates FBO
> warnings as well.  I have not had a chance for a deep-dive yet ... but
> wanted to make you aware.
> > > >
> > > >
> > > > Glenn Waldron / osgEarth
> > > >
> > > >   ------------------
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> http://forum.openscenegraph.org/viewtopic.php?p=74485#74485)
> > >
> > >
> > >
> > >
> > >
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