1 /*=========================================================================
2
3 Program: Visualization Toolkit
4 Module: TestGaussianBlurPass.cxx
5
6 Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
7 All rights reserved.
8 See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
9
10 This software is distributed WITHOUT ANY WARRANTY; without even
11 the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
12 PURPOSE. See the above copyright notice for more information.
13
14 =========================================================================*/
15 // This test covers the gaussian blur post-processing render pass.
16 // It renders an actor with a translucent LUT and depth
17 // peeling using the multi renderpass classes. The mapper uses color
18 // interpolation (poor quality).
19 //
20 // The command line arguments are:
21 // -I => run in interactive mode; unless this is used, the program will
22 // not allow interaction and exit
23
24 #include "vtkTestUtilities.h"
25 #include "vtkRegressionTestImage.h"
26
27 #include "vtkNew.h"
28 #include "vtkPLYReader.h"
29 #include "vtkProperty.h"
30 #include "vtkRenderWindowInteractor.h"
31 #include "vtkRenderWindow.h"
32 #include "vtkOpenGLRenderer.h"
33 #include "vtkActor.h"
34 #include "vtkPolyDataMapper.h"
35 #include "vtkCamera.h"
36
37 #include "vtkSSAAPass.h"
38 #include "vtkRenderStepsPass.h"
39
40 #include "vtkCellArray.h"
41 #include "vtkTimerLog.h"
42
TestSSAAPass(int argc,char * argv[])43 int TestSSAAPass(int argc, char* argv[])
44 {
45 vtkNew<vtkRenderWindowInteractor> iren;
46 vtkNew<vtkRenderWindow> renWin;
47 renWin->SetMultiSamples(0);
48 renWin->SetAlphaBitPlanes(1);
49 iren->SetRenderWindow(renWin);
50 vtkNew<vtkRenderer> renderer;
51 renWin->AddRenderer(renderer);
52
53 vtkNew<vtkActor> actor;
54 vtkNew<vtkPolyDataMapper> mapper;
55 renderer->AddActor(actor);
56 actor->SetMapper(mapper);
57
58 vtkOpenGLRenderer *glrenderer =
59 vtkOpenGLRenderer::SafeDownCast(renderer);
60
61 // create the basic VTK render steps
62 vtkNew<vtkRenderStepsPass> basicPasses;
63
64 // finally blur the resulting image
65 // The blur delegates rendering the unblured image
66 // to the basicPasses
67 vtkNew<vtkSSAAPass> ssaa;
68 ssaa->SetDelegatePass(basicPasses);
69
70 // tell the renderer to use our render pass pipeline
71 glrenderer->SetPass(ssaa);
72 // glrenderer->SetPass(basicPasses);
73
74 renWin->SetSize(500,500);
75
76 const char* fileName =
77 vtkTestUtilities::ExpandDataFileName(argc, argv, "Data/dragon.ply");
78 vtkNew<vtkPLYReader> reader;
79 reader->SetFileName(fileName);
80 reader->Update();
81
82 delete [] fileName;
83
84 mapper->SetInputConnection(reader->GetOutputPort());
85 actor->GetProperty()->SetAmbientColor(0.2, 0.2, 1.0);
86 actor->GetProperty()->SetDiffuseColor(1.0, 0.65, 0.7);
87 actor->GetProperty()->SetSpecularColor(1.0, 1.0, 1.0);
88 actor->GetProperty()->SetSpecular(0.5);
89 actor->GetProperty()->SetDiffuse(0.7);
90 actor->GetProperty()->SetAmbient(0.5);
91 actor->GetProperty()->SetSpecularPower(20.0);
92 actor->GetProperty()->SetOpacity(1.0);
93
94 vtkNew<vtkTimerLog> timer;
95 timer->StartTimer();
96 renWin->Render();
97 timer->StopTimer();
98 double firstRender = timer->GetElapsedTime();
99 cerr << "first render time: " << firstRender << endl;
100
101 timer->StartTimer();
102 int numRenders = 4;
103 for (int i = 0; i < numRenders; ++i)
104 {
105 renderer->GetActiveCamera()->Azimuth(80.0/numRenders);
106 renderer->GetActiveCamera()->Elevation(88.0/numRenders);
107 renWin->Render();
108 }
109 timer->StopTimer();
110 double elapsed = timer->GetElapsedTime();
111 cerr << "interactive render time: " << elapsed / numRenders << endl;
112 unsigned int numTris = reader->GetOutput()->GetPolys()->GetNumberOfCells();
113 cerr << "number of triangles: " << numTris << endl;
114 cerr << "triangles per second: " << numTris*(numRenders/elapsed) << endl;
115
116 renderer->GetActiveCamera()->SetPosition(0,0,1);
117 renderer->GetActiveCamera()->SetFocalPoint(0,0,0);
118 renderer->GetActiveCamera()->SetViewUp(0,1,0);
119 renderer->ResetCamera();
120 renWin->Render();
121
122 int retVal = vtkRegressionTestImage( renWin );
123
124 if ( retVal == vtkRegressionTester::DO_INTERACTOR)
125 {
126 iren->Start();
127 }
128 return !retVal;
129 }
130