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/*=========================================================================
Program: Visualization Toolkit
Module: vtkCompositeRGBAPass.h
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
/**
* @class vtkCompositeRGBAPass
* @brief Blend RGBA buffers of processes.
*
* Blend the RGBA buffers of satellite processes over the root process RGBA
* buffer.
* The RGBA buffer of the satellite processes are not changed.
*
* This pass requires a OpenGL context that supports texture objects (TO),
* and pixel buffer objects (PBO). If not, it will emit an error message
* and will render its delegate and return.
*
* @sa
* vtkRenderPass
*/
#ifndef vtkCompositeRGBAPass_h
#define vtkCompositeRGBAPass_h
#include "vtkRenderPass.h"
#include "vtkRenderingParallelModule.h" // For export macro
class vtkMultiProcessController;
class vtkPixelBufferObject;
class vtkTextureObject;
class vtkOpenGLRenderWindow;
class vtkPKdTree;
class VTKRENDERINGPARALLEL_EXPORT vtkCompositeRGBAPass : public vtkRenderPass
{
public:
static vtkCompositeRGBAPass* New();
vtkTypeMacro(vtkCompositeRGBAPass, vtkRenderPass);
void PrintSelf(ostream& os, vtkIndent indent) override;
/**
* Perform rendering according to a render state \p s.
* \pre s_exists: s!=0
*/
void Render(const vtkRenderState* s) override;
/**
* Release graphics resources and ask components to release their own
* resources.
* \pre w_exists: w!=0
*/
void ReleaseGraphicsResources(vtkWindow* w) override;
//@{
/**
* Controller
* If it is NULL, nothing will be rendered and a warning will be emitted.
* Initial value is a NULL pointer.
*/
vtkGetObjectMacro(Controller, vtkMultiProcessController);
virtual void SetController(vtkMultiProcessController* controller);
//@}
//@{
/**
* kd tree that gives processes ordering. Initial value is a NULL pointer.
*/
vtkGetObjectMacro(Kdtree, vtkPKdTree);
virtual void SetKdtree(vtkPKdTree* kdtree);
//@}
/**
* Is the pass supported by the OpenGL context?
*/
bool IsSupported(vtkOpenGLRenderWindow* context);
protected:
/**
* Default constructor. Controller is set to NULL.
*/
vtkCompositeRGBAPass();
/**
* Destructor.
*/
~vtkCompositeRGBAPass() override;
vtkMultiProcessController* Controller;
vtkPKdTree* Kdtree;
vtkPixelBufferObject* PBO;
vtkTextureObject* RGBATexture;
vtkTextureObject* RootTexture;
float* RawRGBABuffer;
size_t RawRGBABufferSize;
private:
vtkCompositeRGBAPass(const vtkCompositeRGBAPass&) = delete;
void operator=(const vtkCompositeRGBAPass&) = delete;
};
#endif
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