ImageTexture.h

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//    Copyright 2004-2019, SenseGraphics AB
//
//    This file is part of H3D API.
//
//    H3D API is free software; you can redistribute it and/or modify
//    it under the terms of the GNU General Public License as published by
//    the Free Software Foundation; either version 2 of the License, or
//    (at your option) any later version.
//
//    H3D API 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 H3D API; if not, write to the Free Software
//    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
//
//    A commercial license is also available. Please contact us at 
//    www.sensegraphics.com for more information.
//
//
//
#ifndef __IMAGETEXTURE_H__
#define __IMAGETEXTURE_H__
 
#include <H3D/X3DTexture2DNode.h>
#include <H3D/H3DImageLoaderNode.h>
#include <H3D/X3DUrlObject.h>
#include <H3D/MFNode.h>
#include <H3D/Scene.h>
 
namespace H3D {
  class H3DAPI_API ImageTexture :
    public X3DTexture2DNode,
    public X3DUrlObject {
  public:
 
    H3D_API_EXCEPTION( CouldNotLoadImage );
 
    typedef TypedMFNode< H3DImageLoaderNode > MFImageLoader;
 
    class H3DAPI_API SFImage: 
      public TypedField< X3DTexture2DNode::SFImage,
                         Types< MFString, MFImageLoader > > {
    protected:
      virtual void update();
      
      Image * loadImage( ImageTexture *texture,
                         const vector< string > &urls,
                         const NodeVector &image_loader ); 
 
      struct ThreadFuncData {
        ImageTexture *texture;
        vector< string > urls;
        NodeVector image_loaders;
        MutexLock load_thread_mutex;
      };
      
      struct CBData {
        CBData():texture(NULL), image(NULL){}
        ImageTexture *texture;
        Image *image;
      };
 
      ThreadFuncData thread_data;
 
      CBData cb_data;
      
      static Scene::CallbackCode loadImageCB( void *data );
 
      static void *loadImageThreadFunc( void * );
    public:
      virtual ~SFImage();
    };
      
    ImageTexture( Inst< DisplayList > _displayList = 0,
                  Inst< SFNode   >  _metadata        = 0,
                  Inst< MFString >  _url             = 0,
                  Inst< SFBool   >  _repeatS         = 0,
                  Inst< SFBool   >  _repeatT         = 0,
                  Inst< SFBool   >  _scaleToP2       = 0,
                  Inst< SFImage  > _image            = 0,
                  Inst< MFImageLoader > _imageLoader = 0,
                  Inst< SFTextureProperties > _textureProperties = 0,
                  Inst< SFString > _loadInThread     = 0,
                  Inst< SFBool   > _canShare         = 0 );
 
    virtual ~ImageTexture ();
 
    virtual void render();
 
    virtual void postRender();
 
    virtual void preRender();
 
    virtual void enableTexturing();
 
    virtual void disableTexturing();
 
    virtual GLuint getTextureId();
 
    virtual GLuint getTextureUnit();
 
    virtual GLenum getTextureTarget();
 
    virtual int getTextureWidth();
 
    virtual int getTextureHeight();
 
    virtual int getTextureDepth();
    
 
    virtual void setTextureId( GLuint id );
    virtual void setTextureUnit( GLint unit );
    virtual void setTextureTarget( GLenum target );
 
    virtual void setTextureWidth( int _width );
 
    virtual void setTextureHeight( int _height );
 
    virtual void setTextureDepth( int _depth );
 
    virtual bool makeResident ();
 
    virtual void makeNonResident ();
 
    virtual bool isResident ();
 
    virtual GLuint64 getTextureHandle();
 
    virtual void invalidateTextureHandle ();
 
    virtual void inUse ();
 
 
    virtual Image* renderToImage ( H3DInt32 _width, H3DInt32 _height, bool output_float_texture = false  );
 
    virtual std::pair<H3DInt32,H3DInt32> getDefaultSaveDimensions ();
 
    virtual GLint glInternalFormat( Image *i );
 
    H3DUniquePtr< MFImageLoader > imageLoader;
 
    H3DUniquePtr< SFString > loadInThread;
 
    H3DUniquePtr< SFBool > canShare;
 
    static H3DNodeDatabase database;
  protected:
 
    bool useSharing ();
 
    void removeSharedImage ();
 
    bool addSharedImage ( std::vector < std::string > _urls );
 
    bool texturePropertiesMatching( const ImageTexture* wrapped_image );
 
    H3DUniquePtr< H3DUtil::SimpleThread > load_thread;
 
    struct SharedImage {
      SharedImage () : use_count ( 0 ) {}
 
      AutoRef < Node > image;
      int use_count; 
    };
 
    ImageTexture* wrapped_image;
    bool inited_sharing;
    bool share_textures;
 
    typedef std::map < std::vector < std::string >, SharedImage > ImageDatabase;
 
    static ImageDatabase image_database;
  };
}
 
#endif