VRS - The Virtual Rendering System

version 3.3

rendertexturegl.h

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/******************************************************************************
 * VRS - The Virtual Rendering System
 * Copyright (C) 2000-2005 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: rendertexturegl.h 6765 2010-02-03 15:58:38Z jan.klimke $
//
// $Log$
// Revision 1.1  2005/07/19 09:32:00  nienhaus
// initial check-in
//

#ifndef VRS_RENDERTEXTUREGL_H
#define VRS_RENDERTEXTUREGL_H

#include <vrs/opengl/openglconfig.h>
#include <vrs/opengl/texturegl.h>
#include <vrs/opengl/texture1dgl.h>
#include <vrs/opengl/texture2dgl.h>
#include <vrs/opengl/texture3dgl.h>
#include <vrs/opengl/texturearray2dgl.h>
#include <vrs/opengl/cubemaptexturegl.h>
#include <vrs/opengl/fbo/rendertargetgl.h>

namespace VRS {

    class VRS_CORE_API RenderTextureGL : public RenderTargetGL {
    public:
        RenderTextureGL(Texture1DGL* texture, unsigned int width, unsigned int mipMapLevel = 0, 
                        GLenum type = GL_UNSIGNED_BYTE, bool generateMipMap = true);
        RenderTextureGL(Texture2DGL* texture, unsigned int width, unsigned int height, unsigned int mipMapLevel = 0, 
                        GLenum type = GL_UNSIGNED_BYTE, bool generateMipMap = true);
        RenderTextureGL(CubeMapTextureGL* texture, GLenum textureTarget, unsigned int dim, unsigned int mipMapLevel = 0, 
                        GLenum type = GL_UNSIGNED_BYTE, bool generateMipMap = true);
        RenderTextureGL(Texture3DGL* texture, unsigned int width, unsigned int height, unsigned int depth, 
                        unsigned int mipMapLevel = 0, unsigned int zOffset = 0, 
                        GLenum type = GL_UNSIGNED_BYTE, bool generateMipMap = true
        );
        RenderTextureGL(TextureArray2DGL* texture, unsigned int width, unsigned int height, unsigned int depth, 
                        unsigned int mipMapLevel = 0, unsigned int zOffset = 0, 
                        GLenum type = GL_UNSIGNED_BYTE, bool generateMipMap = true
        );
        virtual GLenum renderTarget() const { return GL_TEXTURE; }

        virtual unsigned int width() const;
        virtual unsigned int height() const;

        TextureGL* getTexture() const;
        GLenum getTextureTarget() const;
        int getMipMapLevel() const;
        void setMipMapLevel(int level);
        int getZOffset() const;
        void setZOffset(int offset);
        GLenum getType() const;
        void setType(GLenum);
        bool generateMipMap() const;
        void generateMipMap(bool);
        unsigned int depth() const;

        void setWidth(unsigned int width);
        void setHeight(unsigned int height);
        void setDepth(unsigned int depth);
        VRS_TYPEINFO(RenderTextureGL, RenderTargetGL);
        VRS_SERIALIZABLE(RenderTextureGL);

    protected: 
        RenderTextureGL() { } // for serialization only

    private:
        SO<TextureGL> texture_;
        GLenum textureTarget_;
        
        int mipMapLevel_;
        int zOffset_;
        GLenum type_;
        bool generateMipMap_;

        unsigned int texWidth_;
        unsigned int texHeight_;
        unsigned int texDepth_;
    };

    // virtual functions implementations
    inline GLenum RenderTextureGL::getTextureTarget() const { return textureTarget_; }
    inline unsigned int RenderTextureGL::width() const { return texWidth_; }
    inline unsigned int RenderTextureGL::height() const { return texHeight_; }

    // texture data
    inline TextureGL* RenderTextureGL::getTexture() const { return texture_; }
    inline int RenderTextureGL::getMipMapLevel() const { return mipMapLevel_; }
    inline int RenderTextureGL::getZOffset() const { return zOffset_; }
    inline GLenum RenderTextureGL::getType() const { return type_; }
    inline bool RenderTextureGL::generateMipMap() const { return generateMipMap_; }
    inline void RenderTextureGL::generateMipMap(bool generateMipmap){ generateMipMap_ = generateMipmap; }
    inline unsigned int RenderTextureGL::depth() const { return texDepth_; }

    inline void RenderTextureGL::setWidth(unsigned int w) {
        if(w!=texWidth_) {
            texWidth_=w;
            
            modified();
        }
    }
    inline void RenderTextureGL::setHeight(unsigned int h) {
        if(h!=texHeight_) {
            texHeight_=h;

            modified();
        }
    }
    inline void RenderTextureGL::setDepth(unsigned int d) {
        if(d!=texDepth_) {
            texDepth_=d;

            modified();
        }
    }
    inline void RenderTextureGL::setZOffset(int zOffset) {
        if(zOffset!=zOffset_) {
            zOffset_=zOffset;

            modified();
        }
    }

} // namespace VRS

#endif // VRS_RENDERTEXTUREGL_H

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