// Copyright (C) 2005 Gideon May (gideon@computer.org)
//
// Permission to copy, use, sell and distribute this software is granted
// provided this copyright notice appears in all copies.
// Permission to modify the code and to distribute modified code is granted
// provided this copyright notice appears in all copies, and a notice
// that the code was modified is included with the copyright notice.
//
// This software is provided "as is" without express or implied warranty,
// and with no claim as to its suitability for any purpose.

#include <boost/python/class.hpp>
#include <boost/python/scope.hpp>
#include <boost/python/copy_const_reference.hpp>
#include <boost/python/copy_non_const_reference.hpp>

#include <osg/FragmentProgram>

#include "StateAttribute.hpp"
#include "held_ptr.hpp"

using namespace boost::python;

namespace {
DEFINE_STATEATTRIBUTE_CAST(FragmentProgram)
}

namespace PyOSG {
void init_FragmentProgram()
{
    REGISTER_STATEATTRIBUTE_CAST(FragmentProgram);

    class_<osg::FragmentProgram, osg::ref_ptr<osg::FragmentProgram>, bases<osg::StateAttribute> > fragment("FragmentProgram", 
            "Encapsulates the OpenGL ARB fragment program state.\n",
            no_init);
    scope fragment_scope(fragment);
    fragment.def(init<>())
        .def("getFragmentProgramID",
            &osg::FragmentProgram::getFragmentProgramID,
            return_value_policy<copy_non_const_reference>())

        .def("setFragmentProgram",
            (void (osg::FragmentProgram::*)(const char*))
            &osg::FragmentProgram::setFragmentProgram)

        /** Get the fragment program.*/
        .def("getFragmentProgram",
            (const std::string& (osg::FragmentProgram::*)())
            &osg::FragmentProgram::getFragmentProgram,
            return_value_policy<copy_const_reference>())

        /** Set Program Parameters */
        .def("setProgramLocalParameter",
            &osg::FragmentProgram::setProgramLocalParameter)
        // inline void setProgramLocalParameter(const GLuint index, const Vec4& p)

        // TODO
        // typedef std::map<GLuint,Vec4> LocalParamList;
        /** Get list of Program Parameters */
        // inline LocalParamList& getLocalParamList() { return _programLocalParameters; }

        // TODO
        /** Get const list of Program Parameters */
        // inline const LocalParamList& getLocalParamList() const { return _programLocalParameters; }

        /** Matrix */
        .def("setMatrix",
            &osg::FragmentProgram::setMatrix)

        /** Force a recompile on next apply() of associated OpenGL vertex program objects.*/
        .def("dirtyFragmentProgramObject",
            &osg::FragmentProgram::dirtyFragmentProgramObject)

        /** use deleteFragmentProgramObject instead of glDeletePrograms to allow
          * OpenGL Fragment Program objects to be cached until they can be deleted
          * by the OpenGL context in which they were created, specified
          * by contextID.*/
        .def("deleteFragmentProgramObject",
            &osg::FragmentProgram::deleteFragmentProgramObject)
        // static void deleteFragmentProgramObject(unsigned int contextID,GLuint handle);

        /** flush all the cached fragment programs which need to be deleted
          * in the OpenGL context related to contextID.*/
        .def("flushDeletedFragmentProgramObjects",
            &osg::FragmentProgram::flushDeletedFragmentProgramObjects)

        .staticmethod("deleteFragmentProgramObject")
        .staticmethod("flushDeletedFragmentProgramObjects")
        ;
}
}