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vtkOSPRayWindowNode.cxx
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vtkOSPRayWindowNode.cxx
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/*=========================================================================
Program: Visualization Toolkit
Module: vtkOSPRayWindowNode.cxx
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.
=========================================================================*/
#include "vtkOSPRayWindowNode.h"
#include "vtkCollectionIterator.h"
#include "vtkFloatArray.h"
#include "vtkObjectFactory.h"
#include "vtkOSPRayRendererNode.h"
#include "vtkOSPRayViewNodeFactory.h"
#include "vtkRendererCollection.h"
#include "vtkRenderWindow.h"
#include "vtkUnsignedCharArray.h"
#include "vtkViewNodeCollection.h"
#include "ospray/ospray.h"
#include <stdexcept>
//============================================================================
vtkStandardNewMacro(vtkOSPRayWindowNode);
//----------------------------------------------------------------------------
vtkOSPRayWindowNode::vtkOSPRayWindowNode()
{
int ac = 1;
const char* av[] = {"pvOSPRay\0"};
try
{
ospInit(&ac, av);
}
catch (std::runtime_error &vtkNotUsed(e))
{
#if OSPRAY_VERSION_MAJOR == 1 && OSPRAY_VERSION_MINOR >= 6
ospShutdown();
#endif
//cerr << "warning: double init" << endl;
}
vtkOSPRayViewNodeFactory *fac = vtkOSPRayViewNodeFactory::New();
this->SetMyFactory(fac);
fac->Delete();
}
//----------------------------------------------------------------------------
vtkOSPRayWindowNode::~vtkOSPRayWindowNode()
{
}
//----------------------------------------------------------------------------
void vtkOSPRayWindowNode::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os, indent);
}
//----------------------------------------------------------------------------
void vtkOSPRayWindowNode::Render(bool prepass)
{
if (!prepass)
{
//composite all renderers framebuffers together
this->ColorBuffer->SetNumberOfComponents(4);
this->ColorBuffer->SetNumberOfTuples(this->Size[0]*this->Size[1]);
unsigned char *rgba = static_cast<unsigned char *>
(this->ColorBuffer->GetVoidPointer(0));
this->ZBuffer->SetNumberOfComponents(1);
this->ZBuffer->SetNumberOfTuples(this->Size[0]*this->Size[1]);
float *z = static_cast<float *>
(this->ZBuffer->GetVoidPointer(0));
vtkViewNodeCollection *renderers = this->GetChildren();
vtkCollectionIterator *it = renderers->NewIterator();
it->InitTraversal();
int layer = 0;
int count = 0;
while (count < renderers->GetNumberOfItems())
{
it->InitTraversal();
while (!it->IsDoneWithTraversal())
{
vtkOSPRayRendererNode *child =
vtkOSPRayRendererNode::SafeDownCast(it->GetCurrentObject());
vtkRenderer *ren = vtkRenderer::SafeDownCast(child->GetRenderable());
if (ren->GetLayer() == layer)
{
child->WriteLayer(rgba, z, this->Size[0], this->Size[1], layer);
count++;
}
it->GoToNextItem();
}
layer++;
}
it->Delete();
}
}