GeneratedCubeMapTexture.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 __GENERATEDCUBEMAPTEXTURE_H__
#define __GENERATEDCUBEMAPTEXTURE_H__
 
#include <H3D/X3DEnvironmentTextureNode.h>
#include <H3D/X3DViewpointNode.h>
#include <H3D/X3DTexture2DNode.h>
#include <H3D/DependentNodeFields.h>
#include <H3D/H3DMultiPassRenderObject.h>
#include <list>
#include <H3D/SFInt32.h>
 
namespace H3D {
 
  class H3DAPI_API GeneratedCubeMapTexture : 
    public X3DEnvironmentTextureNode,
    public H3DMultiPassRenderObject {
  public:
    typedef  DependentSFNode< FieldRef<TextureProperties,
                                       Field,
                                       &TextureProperties::propertyChanged > > 
    SFTextureProperties;
 
    GeneratedCubeMapTexture( Inst< DisplayList > _displayList = 0,
                             Inst< SFNode      > _metadata   = 0,
                             Inst< SFString    > _update     = 0,
                             Inst< SFInt32     > _size       = 0,
                        Inst< SFTextureProperties > _textureProperties = 0 );
 
    ~GeneratedCubeMapTexture();
 
    virtual void enableTexturing();
 
    virtual void disableTexturing();
 
    virtual void renderTextureProperties();
 
    virtual void render();
 
    virtual void preRender() {
      X3DEnvironmentTextureNode::preRender();
      if( generating_textures ) {
        glEnable( GL_ALPHA_TEST );
        glAlphaFunc( GL_NEVER, 0 );
      }
    }
 
    virtual GLbitfield getAffectedGLAttribs() {
      return 
         X3DEnvironmentTextureNode::getAffectedGLAttribs() | 
         GL_COLOR_BUFFER_BIT;
    }
 
    virtual void initializeTextures();
 
    virtual void updateCubeMapTextures( X3DChildNode *n,
                                        X3DViewpointNode *vp );
 
    virtual void traverseSG( TraverseInfo &ti );
 
    virtual void renderPreViewpoint( X3DChildNode *n,
                                     X3DViewpointNode *vp );
 
    H3DUniquePtr< SFString > update;
 
    H3DUniquePtr< SFInt32 > size;
 
    H3DUniquePtr< SFTextureProperties > textureProperties;
 
    static H3DNodeDatabase database;
 
  protected:
    GLuint fbo_id;
 
    GLuint rbo_id;
 
    bool textures_initialized;
    
    bool generating_textures;
 
    virtual void updateCubeMap( GLuint texture_target,
                                const Vec3f & camera_position,
                                const Vec3f & camera_dir,
                                const Vec3f & camera_up,
                                X3DChildNode *n,
                                X3DViewpointNode *vp );
 
    Matrix4f local_to_global;
  };
}
 
#endif