SoFramebufferSampler.h

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/*************************************************************************************
**
** Copyright 2007, 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.
**
** For further information use the contact form at https://www.mevislab.de/contact
**
**************************************************************************************/
 
#ifndef SO_FRAMEBUFFER_SAMPLER_H
#define SO_FRAMEBUFFER_SAMPLER_H
 
 
 
#include "SoShaderSystem.h"
#include "Inventor/nodes/SoSampler.h"
#include <Inventor/fields/SoSFNode.h>
#include <Inventor/fields/SoSFColor.h>
#include <Inventor/fields/SoSFFloat.h>
#include <Inventor/fields/SoSFEnum.h>
#include <Inventor/fields/SoSFBool.h>
#include <Inventor/fields/SoSFTrigger.h>
 
class SoGLFramebufferObject;
class SoGLTexture;
class SoGLRenderbuffer;
class SoResolutionIndependentViewerProxy;
class SoFramebufferSamplerOffscreenSceneRenderer;
 
SoEXTENDER class INVENTOR_SHADER_API SoFramebufferSampler : public SoSampler
{
   typedef SoSampler inherited;
 
   SO_NODE_HEADER(SoFramebufferSampler);
 
   public:
 
      enum ColorBufferFormat {
        RGB     = GL_RGB,
        RGB8    = GL_RGB8,
        RGB16   = GL_RGB16,
        RGB16F  = GL_RGB16F_ARB,
        RGB32F  = GL_RGB32F_ARB,
        RGBA    = GL_RGBA,
        RGBA8   = GL_RGBA8,
        RGBA16  = GL_RGBA16,
        RGBA16F = GL_RGBA16F_ARB,
        RGBA32F = GL_RGBA32F_ARB
      };
 
      enum DepthBufferTarget {
        NONE         = 0,
        RENDERBUFFER = 1,
        TEXTURE      = 2
      };
 
      SoSFEnum  colorBufferFormat;
 
      SoSFEnum  depthBufferTarget;
 
      SoSFBool  stencilBuffer;
 
      SoSFColor clearColor;
 
      SoSFFloat clearAlpha;
 
      SoSFEnum  wrapT;
 
      SoSFBool  useSizeStateHints;
 
      SoSFBool  useFormatStateHints;
 
      SoSFFloat sizeMultiplier;
 
      SoSFFloat pixelScale;
 
      SoSFBool automaticTraversal;
 
      SoSFTrigger takeSnapshot;
 
      SoSFBool useSeparateRenderAction;
 
      SoFramebufferSampler();
 
   protected:
 
      SbBool            _fldValUseSizeHints;
      SbBool            _fldValUseFormatHints;
      ColorBufferFormat _fldValColorBufferFormat;
      DepthBufferTarget _fldValDepthBufferTarget;
      SbBool            _fldValStencilBuffer;
 
      SbBool            _rebuild;
      SbBool            _takeSnapshot;
      int32_t           _dataFormat;
 
      SbString          _depthTextureName;
 
      SoGLFramebufferObject       *_framebufferObject;
      SoGLTexture                 *_colorBuffer;
      SoGLRenderbuffer            *_depthBufferRBU;
      SoGLTexture                 *_depthBufferTEX;
      SoGLRenderbuffer            *_stencilBuffer;
 
      SoResolutionIndependentViewerProxy *_proxy;
 
      SoFramebufferSamplerOffscreenSceneRenderer* _offscreenSceneRenderer;
 
      ~SoFramebufferSampler() override;
 
      virtual void   applyRenderAction(SoState *);
 
      void   nameChanged(SoField* field) override;
 
   SoEXTENDER public:
 
      void   GLRender(SoGLRenderAction *action) override;
 
      void   getBoundingBox(SoGetBoundingBoxAction *action) override;
 
      void   handleEvent(SoHandleEventAction *action) override;
 
      void renderInSeparateRenderAction();
 
      void updatePreparationInternal(SoGLRenderAction* action);
 
      static void resetFixedFunctionGLState();
 
  SoINTERNAL public:
 
      static void    initClass();
 
   private:
 
      void snapshotChangedCB(SoField* field);
};
 
#endif  // _SO_FRAMEBUFFER_SAMPLER_