VRS - The Virtual Rendering System

version 3.3

vertexprogramnv.h

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/******************************************************************************
 * VRS - The Virtual Rendering System
 * Copyright (C) 2002-2008 Computer Graphics Systems Group at the 
 * Hasso-Plattner-Institute (HPI), Potsdam, Germany.
 *
 * This  library  is  free  software; you can redistribute it and/or  modify it
 * under the terms of the GNU Lesser General Public  License  as  published  by
 * the  Free  Software  Foundation;  either  version 2.1 of the License, or (at
 * your option) any later version. This library  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 Lesser General Public License for more details. You should have received
 * a copy of the GNU Lesser+ General Public License along with this library; if
 * not, write to the FreeSoftware Foundation, Inc., 59 Temple Place, Suite 330,
 * Boston, MA, 02111-1307, USA.
 ******************************************************************************/

// $Id: vertexprogramnv.h 6320 2008-04-25 16:51:24Z Stefan_Maass $
// $Date: 2008-04-25 18:51:24 +0200 (Fri, 25 Apr 2008) $
// $Revision: 6320 $
// $State$
// $Author: Stefan_Maass $
//

#ifndef VRS_NVIDIA_VERTEXPROGRAMNV_H_
#define VRS_NVIDIA_VERTEXPROGRAMNV_H_

#include <vrs/monoattribute.h>
#include <vrs/callback.h>
#include <vrs/container/array.h>
#include <vrs/opengl/openglconfig.h>

namespace VRS {

class VRS_CORE_API VertexProgramNV : public MonoAttribute {
public:
    VertexProgramNV(const char* program = "", 
        Callback* configure = NULL, Callback* cleanUp = NULL
    );
    void setProgram(const char* program);
    const char* getProgram() const;
    void setConfigureCallback(Callback* configure);
    Callback* getConfigureCallback() const;
    void setCleanUpCallback(Callback* cleanup);
    Callback* getCleanUpCallback() const;

    struct MatrixTracking {
        MatrixTracking(GLenum m, GLenum t, unsigned int r) : matrix(m), transform(t), reg(r) {}
        GLenum matrix;
        GLenum transform;
        unsigned int reg;
    };
    void setMatrixTracking(GLenum matrix, GLenum transform, unsigned int targetRegister);
    Iterator<MatrixTracking*>* matrixTracking() const;

    struct VertexParameter {
        VertexParameter(double x, double y, double z, double w, unsigned int targetRegister) 
            :  reg(targetRegister) {  param[0] = x; param[1] = y; param[2] = z; param[3] = w; }
        double param[4];
        unsigned int reg;
    };
    void setVertexParameter(double x, double y, double z, double w, unsigned int targetRegister);
    Iterator<VertexParameter*>* vertexParameter() const;

    VRS_TYPEINFO(VertexProgramNV, MonoAttribute);
    VRS_SERIALIZABLE(VertexProgramNV);

private:
    // the VertexProgramPainterNV must be able to modify lastChange_ and lastUpdate_
    friend class VertexProgramPainterNV;

    std::string str_;
    SO<Callback> configure_;
    SO<Callback> cleanUp_;

    SO<NonPersistentArray<MatrixTracking*> > matrices_;
    SO<NonPersistentArray<VertexParameter*> > params_;

    TransactionNo lastChange_; // changing the vertex program is costly, so we update 
                               // lastChange_ only when the vertex program string is changed
    TransactionNo lastUpdate_; // updated by the painter, when the vertex program id has been created
};

inline Callback* VertexProgramNV::getConfigureCallback() const { return configure_; }

inline Callback* VertexProgramNV::getCleanUpCallback() const { return cleanUp_; }

} // namespace VRS

#endif // VRS_NVIDIA_VERTEXPROGRAMNV_H_

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