glgeometry.h

Go to the documentation of this file.

/*
    This file is part of Mitsuba, a physically based rendering system.

    Copyright (c) 2007-2014 by Wenzel Jakob and others.

    Mitsuba is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License Version 3
    as published by the Free Software Foundation.

    Mitsuba is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program. If not, see <http://www.gnu.org/licenses/>.
*/

#pragma once
#if !defined(__MITSUBA_HW_GLGEOMETRY_H_)
#define __MITSUBA_HW_GLGEOMETRY_H_

#include <mitsuba/hw/glrenderer.h>
#include <mitsuba/hw/gpugeometry.h>

MTS_NAMESPACE_BEGIN

/** \brief OpenGL-based GPUGeometry implementation
 * \ingroup libhw
 */
class MTS_EXPORT_HW GLGeometry : public GPUGeometry {
        friend class GLRenderer;
public:
        /// Create a new GLGeometry instance for the given mesh
        GLGeometry(const TriMesh *mesh);

        /// Upload the geometry object
        void init();

        /// Refresh (re-upload) the geometry object
        void refresh();

        /// Bind the geometry object
        void bind();

        /// Unbind the geometry object
        void unbind();

        /// Free the geometry object from GPU memory
        void cleanup();

        MTS_DECLARE_CLASS()
protected:
        /// Virtual destructor
        virtual ~GLGeometry();
protected:
        enum EIdentifier {
                EVertexID = 0,
                EIndexID = 1
        };

        GLuint m_id[2];
        GLuint64 m_addr[2];
        GLuint m_size[2];
        int m_stride;
};

MTS_NAMESPACE_END

#endif /* __MITSUBA_HW_GLGEOMETRY_H_ */