Let me know if you need more code than this. I can throw together a full
executable if it is needed.
So far I've added a camera as a slave camera to the viewer. I have no problems
doing that.
viewer->addSlave(_camera);
Then when I add a shader to the slave camera:
osg::ref_ptr<osg::StateSet> ss = _camera->getOrCreateStateSet();
//shaders
osg::ref_ptr<osg::PolygonMode> mode = new osg::PolygonMode;
mode->setMode(osg::PolygonMode::FRONT_AND_BACK, osg::PolygonMode::FILL);
osg::ref_ptr<osg::Program> program = new osg::Program;
program->setName( "SimpleShader");
program->addShader( new osg::Shader( osg::Shader::VERTEX,
simpleVertexShaderSrc ) );
program->addShader( new osg::Shader( osg::Shader::FRAGMENT,
simpleFragShaderSrc ) );
ss->addUniform(0);
ss->setAttributeAndModes( program.get(), osg::StateAttribute::ON ||
osg::StateAttribute::OVERRIDE || osg::StateAttribute::PROTECTED);
ss->setAttributeAndModes( mode.get(), osg::StateAttribute::ON ||
osg::StateAttribute::OVERRIDE || osg::StateAttribute::PROTECTED);
The shader does not seem to be invoked. If I use this same code and but add the
shader to the root node:
//osg::ref_ptr<osg::StateSet> ss = _camera->getOrCreateStateSet();
osg::ref_ptr<osg::StateSet> ss = _renderRoot->getOrCreateStateSet();
the shader works appropriately but is used on all cameras. I can throw together
a quick example program that will illustrate the problem if you need more code
than this.
I have also tried removing the slave camera then re-adding it after I attach
the shader to it.
This same code works if I add the camera to the scene rather than adding it as
a slave camera.
Thanks,
--
Steven Powers
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