ShaderCombiner.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 __SHADERCOMBINER_H__
#define __SHADERCOMBINER_H__
 
#include <H3D/H3DGeneratedFragmentShaderNode.h>
#include <H3D/H3DGeneratedVertexShaderNode.h>
 
namespace H3D {
 
  class H3DAPI_API ShaderCombiner : 
    public H3DGeneratedFragmentShaderNode {
  public:
  
    typedef DependentMFNode< H3DGeneratedFragmentShaderNode, 
                             FieldRef< H3DDisplayListObject,
                                       H3DDisplayListObject::DisplayList,
                                       &H3DDisplayListObject::displayList >,
                             true >
      MFGeneratedFragmentShaderNode;    
 
 
    ShaderCombiner( Inst< DisplayList  > _displayList = 0,
        Inst< SFNode       > _metadata    = 0,
        Inst< SFBool       > _isSelected  = 0,
        Inst< SFBool       > _isValid     = 0,
        Inst< SFBool       > _activate    = 0,
        Inst< SFString     > _language    = 0,
        Inst< MFShaderPart > _parts       = 0,
        Inst< SFBool       > _suppressUniformWarnings = 0,
        Inst< MFString     > _fragmentShaderString = 0,
        Inst< MFString     > _vertexShaderString = 0,
        Inst< MFGeneratedFragmentShaderNode > _shaders = 0,
        Inst< SFString     > _function = 0,
        Inst< SFString     > _arg0Modifier = 0,
        Inst< SFString     > _arg1Modifier = 0,
        Inst< SFFloat      > _value = 0,
        Inst< SFFloat      > _arg0Value = 0,
        Inst< SFFloat      > _arg1Value = 0,
        Inst< SFString     > _alphaFunction = 0,
        Inst< SFString     > _alphaArg0Modifier = 0,
        Inst< SFString     > _alphaArg1Modifier = 0,
        Inst< SFFloat      > _alphaValue = 0,
        Inst< SFFloat      > _alphaArg0Value = 0,
        Inst< SFFloat      > _alphaArg1Value = 0 );
    
 
    virtual void traverseSG( TraverseInfo &ti );
 
    H3DUniquePtr< MFGeneratedFragmentShaderNode > shaders;
 
    H3DUniquePtr< SFString > function;
 
    H3DUniquePtr< SFString > arg0Modifier;
    
    H3DUniquePtr< SFString > arg1Modifier;
 
    H3DUniquePtr< SFFloat  > value;
 
    H3DUniquePtr< SFFloat  > arg0Value;
 
    H3DUniquePtr< SFFloat  > arg1Value;
 
    H3DUniquePtr< SFString > alphaFunction;
 
    H3DUniquePtr< SFString > alphaArg0Modifier;
 
    H3DUniquePtr< SFString > alphaArg1Modifier;
 
    H3DUniquePtr< SFFloat  > alphaValue;
 
    H3DUniquePtr< SFFloat  > alphaArg0Value;
 
    H3DUniquePtr< SFFloat  > alphaArg1Value;
 
    static H3DNodeDatabase database;
  protected:
    virtual string addUniformFields( ComposedShader * );
 
    virtual string getFunctionShaderString();
 
    virtual void getVaryingVariables( vector< VaryingVariable > &variables );
 
    virtual void getAttributes( vector< Attribute > &attributes );
 
    virtual string getVertexShaderString();
 
    virtual string getFragmentShaderString();
 
    string applyModifier( const string &variable_name,
        const string &modifier,
        const string &_value = "0" );
 
    string applyAlphaModifier( const string &variable_name,
             const string &modifier,
             const string &_value = "0" );
 
    string combineFunction( const string &v0,
          const string &v1,
          const string &_function,
          const string &_value = "0" );
  };
}
 
#endif