VRS - The Virtual Rendering System

version 3.3

mipmaptexture2dgl.h

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 /**********************************************************************
 VRS - The Virtual Rendering System
 Copyright (C) 2001-2008 Computer Graphics Systems Group at the 
 Hasso-Plattner-Institute, 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: mipmaptexture2dgl.h 6429 2008-07-04 15:03:07Z Stefan_Maass $

#ifndef VRS_OPENGL_TEXTURE_MIPMAPTEXTURE2DGL_H
#define VRS_OPENGL_TEXTURE_MIPMAPTEXTURE2DGL_H

#include <vrs/image/image.h>
#include <vrs/opengl/texture2dgl.h>
#include <vrs/container/dataiterator.h>

namespace VRS {

class Image;

class VRS_CORE_API MipmapTexture2DGL :
    public Texture2DGL
{
public:
    VRS_TYPEINFO(MipmapTexture2DGL, Texture2DGL);
    VRS_SERIALIZABLE(MipmapTexture2DGL);

    MipmapTexture2DGL(
        SO<Iterator<SO<Image> > > images,
        TextureGL::WrapMode wrapS = TextureGL::REPEAT,
        TextureGL::WrapMode wrapT = TextureGL::REPEAT,
        TextureGL::FilterMode minFilter = TextureGL::TRILINEAR,
                TextureGL::FilterMode magFilter = TextureGL::LINEAR,
                unsigned int baseLevel = 0,
        bool unrefAfterBinding = false,
        GLfloat anisotropic = 1.0,
        const Matrix& matrix = Matrix(),
        const Color& borderColor = Color::black,
        GLenum internalFormat = GL_ZERO
    );
    class ImageProxy : public VRS::SharedObj {
    public:
        VRS_TYPEINFO(ImageProxy, VRS::SharedObj);
        VRS_SERIALIZABLE(ImageProxy);

                ImageProxy(unsigned int level, SO<Image> image);
       

        void setImage(SO<Image> image);
        SO<Image> getImage() const;
                
        bool needsTransfer(const TransactionNo& transactionNo) const;

        unsigned int getWidth()const {return m_width;}
        unsigned int getHeight()const {return m_height;}
        unsigned int getLevel()const {return m_level;}
        Image::MemoryLayout getLayout()const {return m_memory;}

    protected:
        ImageProxy();
                SO<Image> m_image;
                bool m_transfer;
        unsigned int m_width, m_height, m_level;
                Image::MemoryLayout m_memory;

        };

        bool operator==(const MipmapTexture2DGL& other) const;

    virtual void setImages(SO<Iterator<SO<Image> > > newImages, unsigned int baseLevel = 0, GLenum internalFormat = GL_ZERO);
        virtual void setImage(unsigned int level, SO<Image> newImage);

    // Returns all not yet dereferenced images (iterator might be empty).
    virtual SO<Iterator<SO<Image> > > getImages() const;
    // Returns the image associated with the given leven. Might be NULL in case of previous dereference.
        virtual SO<Image> getImage(unsigned int level) const;

    virtual SO<Iterator<SO<ImageProxy> > > getImageProxies() const;
        virtual SO<ImageProxy> getImageProxy(unsigned int level) const;
    virtual int getLevels() const;
        virtual unsigned int getBaseLevel() const;

        virtual unsigned int getMinMipmapLevel() const;
    virtual unsigned int getMaxMipmapLevel() const;

    virtual GLenum getInternalFormat() const;

    virtual Matrix adjustMatrix() const;

    bool unrefAfterBinding() const;
protected:
    MipmapTexture2DGL(); // only for serialization!!!

    virtual void acceptChildren(std::vector<Visitable*>& appendChildrenHere) const;

        SO<Iterator<SO<Image> > > ensureImageFormatConsistence(const SO<Iterator<SO<Image> > >& images);

private:
    
    SO<DataIterator<SO<ImageProxy> > > m_images;
        unsigned int m_baseLevel;
    bool m_unrefAfterBinding;

};

} // namespace VRS

#endif // VRS_OPENGL_TEXTURE_MIPMAPTEXTURE2DGL_H

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