MeVisLab/Standard/Sources/Inventor/SoShader/Inventor/misc/SoGLShader.h

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// **InsertLicense** code



#ifndef  _SO_GL_SHADER_
#define  _SO_GL_SHADER_

#include "SoShaderSystem.h"
#include <Inventor/SbBasic.h>
#ifdef MEVISLAB
#include <mlOpenGL.h>
#else
#include <Inventor/system/SbOpenGL.h>
#endif

SoEXTENDER class INVENTOR_SHADER_API SoGLShader
{
   public:

      static SbBool  isSupported();
      
      static void    printCapabilities();

      SbBool         isContextStillValid(int context) {
         return (_context == -1) || (_context == context);
      }
      
   SoINTERNAL public:

      int            getContext() const {
         return _context;
      }

   protected:
  
      SoGLShader();
      
      virtual ~SoGLShader() {}
      
      virtual void   reset();

      void           errClear(const char *string = NULL) const;
      void           errCheck(const char *string = NULL) const;
      inline SbBool  error(const char *string = NULL) const {
         errCheck(string); return _openGLError != GL_NO_ERROR;
      }

      GLuint         _programHandle;
#ifndef MEVISLAB
#define PROGRAMHANDLE (_programHandle)
#endif

      int            _context;

   private:
      
      static int     _isSupported;

      mutable GLenum _openGLError;
};

#endif  // _SO_GL_SHADER_