VRS - The Virtual Rendering System

version 3.3

techniquegl.h

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 /**********************************************************************
 VRS - The Virtual Rendering System
 Copyright (C) 2001 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: techniquegl.h 6014 2007-08-09 07:51:16Z Konstantin_Baumann $
// $Date: 2007-08-09 09:51:16 +0200 (Thu, 09 Aug 2007) $
// $Revision: 6014 $
// $State$
// $Author: Konstantin_Baumann $
//
// $Log$
// Revision 1.27  2005/01/03 01:43:09  klimetschek
// - modified win32 project layout, splitted vrs.vcproj into vrs_container, vrs_core, vrs_sg, vrs_image, vrs_opengl and vrs_io
// - removed vrs.vcproj
// minor things:
// - added all glutexamples to vrs4glut.sln
// - fixed some problems in glutexamples
// - removed all project references from all VS projects (using solution wide project dependencies instead)
//
// Revision 1.26  2004/12/10 16:59:29  kirsch
// removed halo-pass
//
// Revision 1.25  2004/11/03 14:45:07  saar
// Class comment changed (Doxygen style)
//
// Revision 1.24  2004/03/12 16:28:40  baumann
// macros VRS_NAMESPACE_BEGIN/_END expanded and removed
//
// Revision 1.23  2004/01/19 11:43:58  baumann
// serialization mechanism improved
//
// Revision 1.22  2004/01/19 07:28:03  baumann
// serialization mechanism improved
//
// Revision 1.21  2002/12/12 13:04:07  kirsch
// Technique constructor does not get a number denoting the number of rendering
// passes anymore, only an empty array of passes is created by default.
//
// Revision 1.20  2002/12/11 16:22:25  kirsch
// merged with more advanced private version of shadow technique
// - ShadowTechniqueGL is now a factory that choses between the "best" shadow technique
//   You best use this technique in the scene graph.
// - ShadowTechniqueTemplateGL is a template pattern which should be used for concrete shadow techniques
// - DepthmapShadowTechniqueGL is abstract base class for
//   - DepthTextureShadowTechniqueGL (shadows with depth-textures)
//   - AlphaTextureShadowTechniqueGL (shadows with alpha-textures)
//
// Revision 1.19  2002/10/29 10:32:53  baumann
// macros VRS_CLASSNAME_* and VRS_IMPL_TYPEINFO_* removed
//
// Revision 1.18  2002/03/03 21:44:26  kosta
// VRS_TYPEINFO-macro rewritten
//
// Revision 1.17  2002/02/19 10:34:19  kosta
// undone all changes since 2002-02-15
//
// Revision 1.14  2002/01/15 16:25:55  kosta
// macros rewritten for a better namespace support
//
// Revision 1.13  2001/11/13 16:36:31  kirsch
// changed line feed to unix style (removed control-M)
//
// Revision 1.12  2001/09/13 11:10:36  kirsch
// Modified identifier constants for rendering passes
//
// Revision 1.11  2001/09/10 21:01:00  kirsch
// Shapes with SurfaceStyleGL now are also mirrored with this SurfaceStyleGL
//
// Revision 1.10  2001/09/05 10:56:11  kirsch
// Documentation updates
//
// Revision 1.9  2001/09/04 15:17:25  kirsch
// documentation updates, code cleanup
//
// Revision 1.8  2001/08/28 14:24:39  kirsch
// separated SurfaceStyleGL into SilhouetteStyleGL and SurfaceStyleGL
//
// Revision 1.7  2001/08/27 20:36:53  kirsch
// Added BackgroundGL
//
// Revision 1.6  2001/08/27 13:02:17  kirsch
// TransparencyTechniqueGL, initial revision
//
// Revision 1.5  2001/08/26 11:24:06  kirsch
// changed: extra pass for clearing the framebuffer
//
// Revision 1.4  2001/08/20 13:47:37  kirsch
// Stencilbuffer was cleared unnecessarily in TechniqueGL
//
// Revision 1.3  2001/08/09 15:37:10  kirsch
// Added shadows in OpenGL, created with alpha depthmaps.
// Still experimental, some flaws
//
// Revision 1.2  2001/07/26 15:23:22  kirsch
// enhanced engine to support rendering techniques
//
// Revision 1.1.2.1  2001/06/15 12:56:05  kirsch
// pretraversal integrated, synthesizer replaced, polyattributes don't get
// properly rendered
//

#ifndef VRS_OPENGL_TECHNIQUEGL_H
#define VRS_OPENGL_TECHNIQUEGL_H

#include <vrs/technique.h>

namespace VRS {

class VRS_CORE_API TechniqueGL : public Technique  {
public:

    virtual ID target() const;

    VRS_TYPEINFO(TechniqueGL, Technique);

protected:
    enum PassNumbers {
        BOUNDINGBOX = 5,                // DepthmapShadows (new)
        GATHERLIGHTS = 5,               // Shadows (new)
        BUILDDEPTHMAP = 30,             // DepthmapShadows (new)
        CLEARBUFFER = 50,               // Main
        BACKGROUND = 55,                // Background
        MIRRORPASSESBEGIN = 75,         // Mirror
        SURFACE1 = 90,                  // SurfaceStyle
        SURFACE2 = 91,                  // SurfaceStyle
        MIRROR = 99,                    // Mirror
        MAIN = 100,                     // All
        MIRRORPASSESEND = 125,          // Mirror
        MIRRORTRIGGER = 130,            // Mirror
        MIRRORFACETREDRAW = 135,        // Mirror, Shadows
        STENCILSILH1 = 140,             // SilhouetteStyle
        STENCILSILH2 = 141,             // SilhouetteStyle
        STENCILSILH3 = 142,             // SilhouetteStyle
        STENCILSILH4 = 143,             // SilhouetteStyle
        STENCILSILH5 = 144,             // SilhouetteStyle
        BACKVOL = 170,                  // Shadow volumes (planed)
        FRONTVOL = 171,                 // Shadow volumes (planed)
        APPLYDEPTHMAP = 180,            // DepthmapShadows (new)
        SIMPLESHADOWADDLIGHT = 181,     // Shadows (new)
        APPLYSILH = 300,                // SilhouetteStyle
        TRANSPARENCY = 500              // Transparency
    };
    VRS_SERIALIZABLE_CLASS_ENUM(PassNumbers);
};

} // namespace VRS

#endif // VRS_OPENGL_TECHNIQUEGL_H

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