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/*=========================================================================
Program: Visualization Toolkit
Module: vtkCompositedSynchronizedRenderers.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 "vtkCompositedSynchronizedRenderers.h"
#include "vtkFloatArray.h"
#include "vtkObjectFactory.h"
#include "vtkOpenGLRenderer.h"
#include "vtkRenderWindow.h"
#include "vtkRenderer.h"
#include "vtkTreeCompositer.h"
#include "vtkUnsignedCharArray.h"
vtkStandardNewMacro(vtkCompositedSynchronizedRenderers);
vtkCxxSetObjectMacro(vtkCompositedSynchronizedRenderers, Compositer, vtkCompositer);
//----------------------------------------------------------------------------
vtkCompositedSynchronizedRenderers::vtkCompositedSynchronizedRenderers()
{
this->Compositer = vtkTreeCompositer::New();
}
//----------------------------------------------------------------------------
vtkCompositedSynchronizedRenderers::~vtkCompositedSynchronizedRenderers()
{
this->Compositer->Delete();
}
//----------------------------------------------------------------------------
void vtkCompositedSynchronizedRenderers::MasterEndRender()
{
vtkRawImage& rawImage = this->CaptureRenderedImage();
vtkFloatArray* depth_buffer = vtkFloatArray::New();
this->CaptureRenderedDepthBuffer(depth_buffer);
this->Compositer->SetController(this->ParallelController);
vtkUnsignedCharArray* resultColor = vtkUnsignedCharArray::New();
resultColor->SetNumberOfComponents(rawImage.GetRawPtr()->GetNumberOfComponents());
resultColor->SetNumberOfTuples(rawImage.GetRawPtr()->GetNumberOfTuples());
vtkFloatArray* result_depth = vtkFloatArray::New();
result_depth->SetNumberOfTuples(depth_buffer->GetNumberOfTuples());
this->Compositer->CompositeBuffer(rawImage.GetRawPtr(), depth_buffer, resultColor, result_depth);
depth_buffer->Delete();
result_depth->Delete();
resultColor->Delete();
}
//----------------------------------------------------------------------------
void vtkCompositedSynchronizedRenderers::SlaveEndRender()
{
vtkRawImage& rawImage = this->CaptureRenderedImage();
vtkFloatArray* depth_buffer = vtkFloatArray::New();
this->CaptureRenderedDepthBuffer(depth_buffer);
this->Compositer->SetController(this->ParallelController);
vtkUnsignedCharArray* resultColor = vtkUnsignedCharArray::New();
resultColor->SetNumberOfComponents(rawImage.GetRawPtr()->GetNumberOfComponents());
resultColor->SetNumberOfTuples(rawImage.GetRawPtr()->GetNumberOfTuples());
vtkFloatArray* result_depth = vtkFloatArray::New();
result_depth->SetNumberOfTuples(depth_buffer->GetNumberOfTuples());
this->Compositer->CompositeBuffer(rawImage.GetRawPtr(), depth_buffer, resultColor, result_depth);
depth_buffer->Delete();
resultColor->Delete();
result_depth->Delete();
}
//----------------------------------------------------------------------------
void vtkCompositedSynchronizedRenderers::CaptureRenderedDepthBuffer(vtkFloatArray* depth_buffer)
{
double viewport[4];
vtkOpenGLRenderer* ren = this->Renderer;
ren->GetViewport(viewport);
int window_size[2];
window_size[0] = ren->GetVTKWindow()->GetActualSize()[0];
window_size[1] = ren->GetVTKWindow()->GetActualSize()[1];
int image_size[2];
image_size[0] = static_cast<int>(window_size[0] * (viewport[2] - viewport[0]));
image_size[1] = static_cast<int>(window_size[1] * (viewport[3] - viewport[1]));
// using RGBA always?
depth_buffer->SetNumberOfComponents(1);
depth_buffer->SetNumberOfTuples(image_size[0] * image_size[1]);
ren->GetRenderWindow()->GetZbufferData(static_cast<int>(window_size[0] * viewport[0]),
static_cast<int>(window_size[1] * viewport[1]),
static_cast<int>(window_size[0] * viewport[2]) - 1,
static_cast<int>(window_size[1] * viewport[3]) - 1, depth_buffer->GetPointer(0));
}
//----------------------------------------------------------------------------
void vtkCompositedSynchronizedRenderers::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os, indent);
os << indent << "Compositer: ";
if (this->Compositer)
{
this->Compositer->PrintSelf(os, indent.GetNextIndent());
}
else
{
os << "(none)" << endl;
}
}
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