SoGLVertexAttributeElement.h

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/*************************************************************************************
**
** Copyright 2011, MeVis Medical Solutions AG
**
** The user may use this file in accordance with the license agreement provided with
** the Software or, alternatively, in accordance with the terms contained in a
** written agreement between the user and MeVis Medical Solutions AG.
**
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#ifndef SO_GLVERTEX_ATTRIBUTE_ELEMENT_H
#define SO_GLVERTEX_ATTRIBUTE_ELEMENT_H
 
 
 
#include "SoShaderSystem.h"
#include <Inventor/elements/SoAccumulatedElement.h>
#include <Inventor/SoLists.h>
#include <Inventor/misc/SoVBO.h>
#include <vector>
 
struct INVENTOR_SHADER_API SoVertexAttributeInfo
{
public:
  SoVertexAttributeInfo();
 
  SbString _name;
 
  SoNode*  _node;
 
  const void* _data;
  uint32_t    _numBytes;
  uint32_t    _numValues;
 
  bool _perInstance;
 
  GLenum _type;
  int    _numComponents;
  bool   _normalized;
 
  SoVBO    _vbo;
 
  GLint    _index;
 
  bool _shouldFlipRGBAOnLittleEndian;
};
 
class SoVertexShape;
class SoGLRenderAction;
 
class INVENTOR_SHADER_API SoGLVertexAttributeElement : public SoAccumulatedElement
{
  typedef SoAccumulatedElement inherited;
 
  SO_ELEMENT_HEADER(SoGLVertexAttributeElement);
 
  public:
    typedef std::vector<SoVertexAttributeInfo*> AttributeList;
 
    void init(SoState *state) override;
 
    static  void add(SoState *state, SoVertexAttributeInfo* info);
 
    static  void clear(SoState *state, SoNode *node);
 
    static  const AttributeList& get(SoState *state);
 
    void push(SoState *state) override;
 
    SoINTERNAL public:
 
    static void initClass();
 
  protected:
    static void enableVertexAttributesCB(SoNode* shape, SoGLRenderAction* action, bool useVbo, uint32_t numVertices);
    static void disableVertexAttributesCB(SoNode* shape, SoGLRenderAction* action, bool useVbo, uint32_t numVertices);
 
    AttributeList _attributes;
};
 
#endif