X3DTextureNode.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 __X3DTEXTURENODE_H__
#define __X3DTEXTURENODE_H__
 
#include <H3D/X3DAppearanceChildNode.h>
#include <H3D/SFString.h>
#include <H3D/SFInt32.h>
#include <H3DUtil/Image.h>
#include <H3D/FieldTemplates.h>
#include "GL/glew.h"
 
namespace H3D {
 
  class H3DAPI_API X3DTextureNode : public X3DAppearanceChildNode {
  public:
        
    H3D_API_EXCEPTION( InvalidTextureDimensions );
 
    H3D_API_EXCEPTION( OpenGLTextureError );
 
    H3D_API_EXCEPTION( glTexImageFunctionNotDefined );
 
    class H3DAPI_API UpdateSaveToURL : public OnNewValueSField < AutoUpdate < SFString > > {
      protected:
      virtual void onNewValue( const std::string &v );
    };
 
    X3DTextureNode( Inst< DisplayList > _displayList = 0,
                    Inst< SFNode>  _metadata = 0,
                    Inst< UpdateSaveToURL > _saveToUrl = 0,
                    Inst< SFBool > _saveSuccess = 0,
                    Inst< SFInt32 > _saveHeight = 0,
                    Inst< SFInt32 > _saveWidth = 0
                    );
        
    virtual void enableTexturing() = 0;
 
    virtual void disableTexturing() = 0;
        
    virtual string defaultXMLContainerField() {
      return "texture";
    }
 
    virtual void preRender() {
      setActiveTexture( this );
    }
 
    virtual void postRender() {
      setActiveTexture( NULL );
    }
 
    virtual GLbitfield getAffectedGLAttribs() { 
      return GL_TEXTURE_BIT | GL_LIGHTING_BIT;
    }
 
    virtual Vec3f textureSize() { return Vec3f( 0, 0, 0 ); } 
 
    static X3DTextureNode *getActiveTexture() { return active_texture; }
 
    static void setActiveTexture( X3DTextureNode *t ) { active_texture = t; }
 
    virtual GLuint renderImage( Image *image, 
                                GLenum texture_target,
                                bool scale_to_power_of_two );
 
    // Below are help functions for getting OpenGL constants from an Image.
 
    virtual GLint glInternalFormat( Image *image );
 
    virtual GLenum glPixelFormat( Image *image );
 
    virtual GLenum glPixelComponentType( Image *image );
 
    virtual void glTexImage( Image * /*image*/,
                             GLenum /*texture_target*/,
                             bool /*scale_to_power_of_two*/ ){
      throw glTexImageFunctionNotDefined( "", H3D_FULL_LOCATION ); 
    }
 
    virtual Image* renderToImage ( H3DInt32 _width, H3DInt32 _height, bool output_float_texture = false  );
 
    static bool load_images_in_separate_thread;
 
    H3DUniquePtr < UpdateSaveToURL > saveToUrl;
 
    H3DUniquePtr < SFBool > saveSuccess;
 
    H3DUniquePtr < SFInt32 > saveHeight;
 
    H3DUniquePtr < SFInt32 > saveWidth;
 
    static H3DNodeDatabase database;
 
  protected:
    virtual std::pair<H3DInt32,H3DInt32> getDefaultSaveDimensions ();
  
    GLint glCompressedInternalFormat( GLint _format, const std::string& _compression );
 
  private:
    static X3DTextureNode *active_texture;
  };
}
 
#endif