[osg-users] Cannot set custom shader for a node

[michael kapelko]

Hi.

I'm using SoftShadowMap scene and I want to assign custom shader to one of the nodes, but it doesn't work.

I do it like that:

osg::ref_ptr<osg::Shader> frag = new osg::Shader(osg::Shader::FRAGMENT, code);
osg::StateSet *ss = box->getOrCreateStateSet();
osg::ShaderAttribute *sa = new osg::ShaderAttribute;
sa->setType(osg::StateAttribute::FRAGMENTPROGRAM);

ss->setAttribute(sa);
sa->addShader(frag.get());

The complete code is here: http://pastie.org/5387472

As seen from the code, I tried to enable shader composition, but that didn't help me.

Am I doing it wrong?

[Robert Osfield]

Hi Michael,

It's probably a bit premature to use the OSG's shader composition work, you could try and use but it's very much bleeding edge.  For non experimental work I would recommend using the standard osg::Program/osg::Shader/osg::Uniform functionality.  See the osgshader example for inspiration.
Robert.

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