MeVisLab/Standard/Sources/Inventor/SoShader/Inventor/nodes/SoShaderProgram.h

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// **InsertLicense** code



#ifndef  _SO_SHADER_PROGRAM_
#define  _SO_SHADER_PROGRAM_

#include "SoShaderSystem.h"
#include "Inventor/misc/SoShaderTypes.h"
#include "Inventor/fields/SoMFShaderObject.h"
#include "Inventor/fields/SoMFUniformShaderParameter.h"
#include <Inventor/fields/SoSFEnum.h>
#include <Inventor/fields/SoSFInt32.h>
#include <Inventor/nodes/SoSubNode.h>
#include <Inventor/SbPList.h>

class SoState;
class SoSensor;
class SoNodeSensor;
class SoGLRenderAction;
class SoGLShaderProgram;

class INVENTOR_SHADER_API SoShaderProgram : public SoNode
{
   typedef SoNode inherited;
  
   SO_NODE_HEADER(SoShaderProgram);
  
   public:

      enum GeometryInputType { 
         POINTS_INPUT, 
         LINES_INPUT, 
         LINES_ADJACENCY_INPUT,
         TRIANGLES_INPUT,
         TRIANGLES_ADJACENCY_INPUT
      };
      enum GeometryOutputType { 
         POINTS_OUTPUT, 
         LINE_STRIP_OUTPUT, 
         TRIANGLE_STRIP_OUTPUT 
      };
  
      SoMFShaderObject shaderObject;
  
      SoMFUniformShaderParameter parameter;
  
      SoSFEnum geometryInputType;
  
      SoSFEnum geometryOutputType;
  
      SoSFInt32 maxEmittedGeometryVertices;

      SoShaderProgram();
  
   SoEXTENDER public:

      virtual void GLRender(SoGLRenderAction *action);
 
   SoINTERNAL public:

      static void initClass();

   protected:
  
      SoGLShaderProgram *_glShaderProgram;

      SbPList            _usedShaderParameters;

      virtual ~SoShaderProgram();
   
      void setup();
 
      SbBool  isValidShaderObjects() const;

      void    adaptParametersList(const SbPList &nextParameters);
      void    adaptShadersList(SbPList &prevShaders, const SbPList &nextShaders);
      void    scheduleShaderObjectRebuild();
      void    injectSnippets();

      void    updateOIVStateDependentParameters(SoState *state);
  
   private:
  
      SbPList           _prevGraphShaders;
      SbPList           _prevFieldShaders;
      
      // Active shaders containing the main function
      SoShaderObject   *_shaderWithMainFuncForType[SoShader::NUM_SHADER_TYPES];
      // List of active shaders with snippets
      SbPList           _snippetShadersForType[SoShader::NUM_SHADER_TYPES];

      SoNodeSensor     *_nodeSensor;

      int               _cacheContext;

      static void nodeChangedCB(void *data, SoSensor *sensor);
      void nodeChanged(SoField *field);
   
};

#endif  // _SO_SHADER_PROGRAM_