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/*=========================================================================
Program: Visualization Toolkit
Module: TestGaussianBlurPass.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.
=========================================================================*/
// This test covers the gaussian blur post-processing render pass.
// It renders an actor with a translucent LUT and depth
// peeling using the multi renderpass classes. The mapper uses color
// interpolation (poor quality).
//
// The command line arguments are:
// -I => run in interactive mode; unless this is used, the program will
// not allow interaction and exit
#include "vtkRegressionTestImage.h"
#include "vtkTestUtilities.h"
#include "vtkActor.h"
#include "vtkCamera.h"
#include "vtkNew.h"
#include "vtkOpenGLRenderer.h"
#include "vtkPLYReader.h"
#include "vtkPolyDataMapper.h"
#include "vtkProperty.h"
#include "vtkRenderWindow.h"
#include "vtkRenderWindowInteractor.h"
#include "vtkRenderStepsPass.h"
#include "vtkSSAAPass.h"
#include "vtkCellArray.h"
#include "vtkTimerLog.h"
int TestSSAAPass(int argc, char* argv[])
{
vtkNew<vtkRenderWindowInteractor> iren;
vtkNew<vtkRenderWindow> renWin;
renWin->SetMultiSamples(0);
renWin->SetAlphaBitPlanes(1);
iren->SetRenderWindow(renWin);
vtkNew<vtkRenderer> renderer;
renWin->AddRenderer(renderer);
vtkNew<vtkActor> actor;
vtkNew<vtkPolyDataMapper> mapper;
renderer->AddActor(actor);
actor->SetMapper(mapper);
vtkOpenGLRenderer* glrenderer = vtkOpenGLRenderer::SafeDownCast(renderer);
// create the basic VTK render steps
vtkNew<vtkRenderStepsPass> basicPasses;
// finally blur the resulting image
// The blur delegates rendering the unblured image
// to the basicPasses
vtkNew<vtkSSAAPass> ssaa;
ssaa->SetDelegatePass(basicPasses);
// tell the renderer to use our render pass pipeline
glrenderer->SetPass(ssaa);
// glrenderer->SetPass(basicPasses);
renWin->SetSize(500, 500);
const char* fileName = vtkTestUtilities::ExpandDataFileName(argc, argv, "Data/dragon.ply");
vtkNew<vtkPLYReader> reader;
reader->SetFileName(fileName);
reader->Update();
delete[] fileName;
mapper->SetInputConnection(reader->GetOutputPort());
actor->GetProperty()->SetAmbientColor(0.2, 0.2, 1.0);
actor->GetProperty()->SetDiffuseColor(1.0, 0.65, 0.7);
actor->GetProperty()->SetSpecularColor(1.0, 1.0, 1.0);
actor->GetProperty()->SetSpecular(0.5);
actor->GetProperty()->SetDiffuse(0.7);
actor->GetProperty()->SetAmbient(0.5);
actor->GetProperty()->SetSpecularPower(20.0);
actor->GetProperty()->SetOpacity(1.0);
vtkNew<vtkTimerLog> timer;
timer->StartTimer();
renWin->Render();
timer->StopTimer();
double firstRender = timer->GetElapsedTime();
cerr << "first render time: " << firstRender << endl;
timer->StartTimer();
int numRenders = 4;
for (int i = 0; i < numRenders; ++i)
{
renderer->GetActiveCamera()->Azimuth(80.0 / numRenders);
renderer->GetActiveCamera()->Elevation(88.0 / numRenders);
renWin->Render();
}
timer->StopTimer();
double elapsed = timer->GetElapsedTime();
cerr << "interactive render time: " << elapsed / numRenders << endl;
unsigned int numTris = reader->GetOutput()->GetPolys()->GetNumberOfCells();
cerr << "number of triangles: " << numTris << endl;
cerr << "triangles per second: " << numTris * (numRenders / elapsed) << endl;
renderer->GetActiveCamera()->SetPosition(0, 0, 1);
renderer->GetActiveCamera()->SetFocalPoint(0, 0, 0);
renderer->GetActiveCamera()->SetViewUp(0, 1, 0);
renderer->ResetCamera();
renWin->Render();
int retVal = vtkRegressionTestImage(renWin);
if (retVal == vtkRegressionTester::DO_INTERACTOR)
{
iren->Start();
}
return !retVal;
}