ShaderNode.hh

/*===========================================================================*\
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//=============================================================================
//
//  CLASS ShaderNode
//
//=============================================================================
 
#ifndef ACG_SHADER_NODE_HH
#define ACG_SHADER_NODE_HH
 
 
//== INCLUDES =================================================================
 
#include "BaseNode.hh"
#include <string>
 
#include "../ShaderUtils/GLSLShader.hh"
#include <ACG/Scenegraph/DrawModes.hh>
 
//== NAMESPACES ===============================================================
 
namespace ACG {
namespace SceneGraph {
 
 
//== CLASS DEFINITION =========================================================
 
 
class ACGDLLEXPORT ShaderNode : public BaseNode
{
public:
 
  ShaderNode( BaseNode*           _parent = 0,
              const std::string&  _name = "<ShaderNode>" );
 
  virtual ~ShaderNode();
 
 
  ACG_CLASSNAME(ShaderNode);
 
  void enter(GLState& /*_state*/, const DrawModes::DrawMode& _drawmode) override;
  void leave(GLState& /*_state*/, const DrawModes::DrawMode& _drawmode) override;
 
  void enterPick(GLState& /*_state*/, PickTarget _target, const DrawModes::DrawMode& _drawmode) override;
  void leavePick(GLState& /*_state*/, PickTarget _target, const DrawModes::DrawMode& _drawmode) override;
 
 
  void setShaderDir( std::string _shaderDir);
 
  std::string shaderDir() { return shaderDir_; };
 
  std::string vertexShaderName(DrawModes::DrawMode _drawmode, bool _pick = false);
 
  std::string fragmentShaderName(DrawModes::DrawMode _drawmode, bool _pick = false);
  
  void disableShader (DrawModes::DrawMode _drawmode);
    
  void setShader( DrawModes::DrawMode _drawmode ,
                  const std::string&  _vertexShader,
                  const std::string&  _fragmentShader,
                  std::string         _pickVertexShader = "",
                  std::string         _pickFragmentShader = "");
 
  GLSL::PtrProgram getShader( DrawModes::DrawMode _drawmode, bool _pick = false);
 
  bool hasShader( DrawModes::DrawMode _drawmode, bool _pick = false);
 
  DrawModes::DrawMode availableDrawModes() const override;
 
private :
  // Path to the shaders ( if set ). If empty shaders will not be used.
  std::string shaderDir_;
 
  class ShaderInfo {
 
    public :
      ShaderInfo() :
        vertexShader(0),
        vertexShaderFile(""),
        fragmentShader(0),
        fragmentShaderFile(""),
        program(0),
        initialized(false)
      {
      };
 
    GLSL::PtrVertexShader   vertexShader;
    std::string             vertexShaderFile;
 
    GLSL::PtrFragmentShader fragmentShader;
    std::string             fragmentShaderFile;
 
    GLSL::PtrProgram        program;
 
    bool                    initialized;
  };
 
  std::map< size_t, ShaderInfo> shaders;
  std::map< size_t, ShaderInfo> pickShaders;
};
 
 
//=============================================================================
} // namespace SceneGraph
} // namespace ACG
//=============================================================================
#endif // ACG_SHADER_NODE_HH defined
//=============================================================================