vtkOrderIndependentTranslucentPass.h

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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
#ifndef vtkOrderIndependentTranslucentPass_h
#define vtkOrderIndependentTranslucentPass_h
 
#include "vtkOpenGLRenderPass.h"
#include "vtkRenderingOpenGL2Module.h" // For export macro
 
VTK_ABI_NAMESPACE_BEGIN
class vtkOpenGLFramebufferObject;
class vtkTextureObject;
class vtkOpenGLRenderWindow;
class vtkOpenGLState;
class vtkOpenGLQuadHelper;
 
class VTKRENDERINGOPENGL2_EXPORT vtkOrderIndependentTranslucentPass : public vtkOpenGLRenderPass
{
public:
  static vtkOrderIndependentTranslucentPass* New();
  vtkTypeMacro(vtkOrderIndependentTranslucentPass, vtkOpenGLRenderPass);
  void PrintSelf(ostream& os, vtkIndent indent) override;
 
  void Render(const vtkRenderState* s) override;
 
  void ReleaseGraphicsResources(vtkWindow* w) override;
 
 
  vtkGetObjectMacro(TranslucentPass, vtkRenderPass);
  virtual void SetTranslucentPass(vtkRenderPass* translucentPass);
 
  // vtkOpenGLRenderPass virtuals:
  bool PostReplaceShaderValues(std::string& vertexShader, std::string& geometryShader,
    std::string& fragmentShader, vtkAbstractMapper* mapper, vtkProp* prop) override;
 
protected:
  vtkOrderIndependentTranslucentPass();
 
  ~vtkOrderIndependentTranslucentPass() override;
 
  vtkRenderPass* TranslucentPass;
 
 
  int ViewportX;
  int ViewportY;
  int ViewportWidth;
  int ViewportHeight;
 
  vtkOpenGLFramebufferObject* Framebuffer;
  vtkOpenGLQuadHelper* FinalBlend;
 
  vtkTextureObject* TranslucentRGBATexture;
  vtkTextureObject* TranslucentRTexture;
  vtkTextureObject* TranslucentZTexture;
 
  void BlendFinalPeel(vtkOpenGLRenderWindow* renWin);
 
  // useful to store
  vtkOpenGLState* State;
 
private:
  vtkOrderIndependentTranslucentPass(const vtkOrderIndependentTranslucentPass&) = delete;
  void operator=(const vtkOrderIndependentTranslucentPass&) = delete;
};
 
VTK_ABI_NAMESPACE_END
#endif