This caught my eye:
> state->setAttributeAndModes(prg.get(), osg::StateAttribute::ON);
> }
> // otherwise bind the program and deactivate it.
> else{
> state->setAttributeAndModes(m_program.get(),
osg::StateAttribute::OFF);
> }
osg::StateAttribute::ON/OFF does not work on osg::Program, as GL does
not use glEnable/glDisable on glPrograms. GL disables an active
glProgram with glUseProgram(0); the equiv in OSG is to attach an "empty"
osg::Program (one that has no osg::Shaders attached) Perhaps that is
confusing the OSG state manager, causing this failure?
-- mew
> -----Original Message-----
> From: [EMAIL PROTECTED] [mailto:osg-users-
> [EMAIL PROTECTED] On Behalf Of Christian Heine
> Sent: Thursday, June 05, 2008 11:34 AM
> To: OpenSceneGraph Users
> Subject: Re: [osg-users] Issue on sharing shaders between objects
>
> Hello,
>
> i've played arround with this issue, but i could solve it until now.
> First i thought there may be a problem with the reusage of the
> program, but when i copy it instead of sharing, nothing happends, i
> got the same failure.
>
> // finaly bind the program and activate it if it is user enabled
> if(this->m_userEnabled){
>
> for(uniforms_t::iterator uniIter =
m_uniformCache.begin();
> uniIter != m_uniformCache.end();
> uniIter ++){
> // add all uniforms from the list to the state
> state->addUniform((*uniIter).second.get(),
> osg::StateAttribute::ON | osg::StateAttribute::OVERRIDE |
> osg::StateAttribute::PROTECTED);
> }
>
> /* fake for copy program
> osg::ref_ptr<osg::Program> prg = new osg::Program;
> prg->addBindAttribLocation("tangent",
> osg::Drawable::ATTRIBUTE_6);
> prg->addBindAttribLocation("binromal",
> osg::Drawable::ATTRIBUTE_7);
>
> boost::shared_ptr<OSGTechnique> technique =
> this->getOSGTechnique(AbstractTechnique::VERSION_PS30);
>
> // convert BinRev shader params to osg::Uniform and
> osg::Attribute objects
> for( unsigned int i = 0;
> i < technique->getNumberOfShaders();
> i++)
> {
> boost::shared_ptr<OSGGLSLShader> shader =
>
> boost::dynamic_pointer_cast<OSGGLSLShader>(technique->getShader(i));
> prg->addShader(shader->getShader().get());
> }
> */
>
> state->setAttributeAndModes(prg.get(),
> osg::StateAttribute::ON);
> }
> // otherwise bind the program and deactivate it.
> else{
> state->setAttributeAndModes(m_program.get(),
> osg::StateAttribute::OFF);
> }
> }
>
> There is nothing realy special...
> I've attached an image to show what's going wrong.
>
> Has anyone a hint what could be going wrong? I'm running out of
ideas..
>
> Best regards,
> Christian
>
>
>
>
>
>
> [EMAIL PROTECTED] wrote:
> > Hello,
> >
> > i've successfully implemented a simple dot3 object shading for my
> scene and
> > it works fine with single objects. Now i try to share the shaders
> between
> > different objects in the scene and got some trouble:
> >
> > To share the shaders i've one osg::Program, where i've added two
> osg::Shader
> > objects. The osg::Program instance is shared between the objects and
> applied
> > to their osg::StateSet objects. The required osg::Uniform objects
are
> created
> > explicit for each object and bind to their osg::StateSet in a
> separated process.
> > So only the osg::Program and osg::Shader are Shared (later i will
> share the
> > equal uniforms too).
> >
> > The shader works, but it's effected on all objects equals to the
> object where
> > the osg::Program has applied first. I.e. i've added two normal
mapped
> cubes in
> > the scene. When i set the light between both cubes i expect that
both
> cube faces
> > are enlighted arround the light, but on the 2nd cube the thame face
> of the first
> > cube is enlighted...
> >
> > Have i consider something special for the sharing of (object)
shaders
> between
> > objects?
> >
> > Best regards,
> > Christian
> >
> >
> >
> > _______________________________________________
> > osg-users mailing list
> > [email protected]
> > http://lists.openscenegraph.org/listinfo.cgi/osg-users-
> openscenegraph.org
> >
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