[vtk-developers] Volume won't show on Win7/Intel HD4600 with QVTKOpenGLWidget in 8.0.0.rc1
Sankhesh Jhaveri
sankhesh.jhaveri at kitware.com
Wed May 24 12:16:05 EDT 2017
Okay thanks.
I’ll take a look.
On Wed, May 24, 2017 at 8:18 AM Elvis Stansvik <elvis.stansvik at orexplore.com>
wrote:
> 2017-05-23 15:41 GMT+02:00 Sankhesh Jhaveri <sankhesh.jhaveri at kitware.com
> >:
> > Hi Elvis,
> >
> > Could you try downloading the ParaView nightly binary and test volume
> > rendering there? You can use the wavelet source for a test dataset.
> ParaView
> > uses the QVTKOpenGLWidget and it would be a good test before diving into
> the
> > code.
>
> I tried the wavelet example with Paraview 5.4.0-RC1-125-g435b603
> 64-bit, and the problem is the same as in my minimal test case. The
> volume won't show up.
>
> It does show up if I switch to the software based ray cast mapper (but
> not with GPU or smart, which I guess both result in the GPU one being
> used).
>
> Please tell me if there's anything else I can do to help debugging.
> There are no errors printed when I run my test case.
>
> Elvis
>
> >
> > Thanks,
> > Sankhesh
> >
> >
> > On Tue, May 23, 2017 at 6:50 AM Elvis Stansvik
> > <elvis.stansvik at orexplore.com> wrote:
> >>
> >> Hi all,
> >>
> >> In porting to QVTKOpenGLWidget, I can't get volumes rendered using
> >> vtkGPUVolumeRayCastMapper to show up on Windows 7, Intel graphics (HD
> >> 4600). They show up fine on Linux. They also show up fine on Windows 7
> >> if using a plain VTK render window. I've tried turning off
> >> multisampling with setSamples(0) on the default QSurfaceFormat.
> >>
> >> The below test case illustrates the issue. See the attached
> >> screenshots from running "TestCase" (left) and "TestCase 1" (right).
> >> The former uses a plain render window while the latter uses the new
> >> QVTKOpenGLWidget. Notice how in the Windows 7 screenshot, the plain
> >> VTK rendering works fine, but the QVTKOpenGLWidget one is not showing
> >> the volume.
> >>
> >> Versions used:
> >>
> >> Kubuntu Linux 16.04
> >> VTK 8.0.0.rc1, OpenGL2
> >> Qt 5.5.1
> >>
> >> Windows 7
> >> VTK 8.0.0.rc1, OpenGL2
> >> Qt 5.6.2
> >>
> >> Any ideas what the problem might be?
> >>
> >> I can provide a standalone .zip distribution of my build of the test
> >> case if you want.
> >>
> >> Note that this issue is orthogonal to the alpha issue I reported and
> >> got solved in my other thread.
> >>
> >> Many thanks in advance,
> >> Elvis
> >>
> >>
> >> main.cpp:
> >>
> >> #include <algorithm>
> >>
> >> #include <vtkColorTransferFunction.h>
> >> #include <vtkGenericOpenGLRenderWindow.h>
> >> #include <vtkGPUVolumeRayCastMapper.h>
> >> #include <vtkImageData.h>
> >> #include <vtkNew.h>
> >> #include <vtkPiecewiseFunction.h>
> >> #include <vtkProperty.h>
> >> #include <vtkRenderer.h>
> >> #include <vtkRenderWindow.h>
> >> #include <vtkRenderWindowInteractor.h>
> >> #include <vtkVolume.h>
> >> #include <vtkVolumeProperty.h>
> >>
> >> #include <QVTKOpenGLWidget.h>
> >>
> >> #include <QApplication>
> >>
> >> int main(int argc, char *argv[])
> >> {
> >> auto defaultFormat = QVTKOpenGLWidget::defaultFormat();
> >> defaultFormat.setSamples(0);
> >> QSurfaceFormat::setDefaultFormat(defaultFormat);
> >>
> >> QApplication app(argc, argv);
> >>
> >> // Set up volume rendering
> >> vtkNew<vtkColorTransferFunction> colorFunction;
> >> colorFunction->AddRGBPoint(0.0, 0.0, 0.0, 0.0);
> >> colorFunction->AddRGBPoint(1.0, 0.0, 0.0, 0.0);
> >>
> >> vtkNew<vtkPiecewiseFunction> opacityFunction;
> >> opacityFunction->AddPoint(0.0, 0.0);
> >> opacityFunction->AddPoint(1.0, 1.0);
> >>
> >> vtkNew<vtkImageData> imageData;
> >> imageData->SetExtent(0, 200, 0, 200, 0, 200);
> >> imageData->AllocateScalars(VTK_FLOAT, 1);
> >> std::fill_n(static_cast<float *>(imageData->GetScalarPointer()),
> >> 8000000, 0.01);
> >>
> >> vtkNew<vtkGPUVolumeRayCastMapper> volumeMapper;
> >> volumeMapper->SetInputData(imageData.Get());
> >>
> >> vtkNew<vtkVolumeProperty> volumeProperty;
> >> volumeProperty->SetScalarOpacity(opacityFunction.Get());
> >> volumeProperty->SetColor(colorFunction.Get());
> >> volumeProperty->ShadeOff();
> >>
> >> vtkNew<vtkVolume> volume;
> >> volume->SetMapper(volumeMapper.Get());
> >> volume->SetProperty(volumeProperty.Get());
> >>
> >> vtkNew<vtkRenderer> renderer;
> >> renderer->AddVolume(volume.Get());
> >> renderer->SetBackground(1.0, 1.0, 1.0);
> >>
> >> if (argc > 1) {
> >> // Render with QVTKOpenGLWidget
> >> vtkNew<vtkGenericOpenGLRenderWindow> window;
> >> window->AddRenderer(renderer.Get());
> >>
> >> auto widget = new QVTKOpenGLWidget();
> >> widget->SetRenderWindow(window.Get());
> >> widget->show();
> >>
> >> return app.exec();
> >> } else {
> >> // Render with "plain" render window / interactor
> >> vtkNew<vtkRenderWindow> window;
> >> window->AddRenderer(renderer.Get());
> >>
> >> vtkNew<vtkRenderWindowInteractor> interactor;
> >> interactor->SetRenderWindow(window.Get());
> >> interactor->Start();
> >>
> >> return 0;
> >> }
> >> }
> >>
> >>
> >> CMakeLists.txt:
> >>
> >> cmake_minimum_required(VERSION 3.1)
> >>
> >> project(TestCase)
> >>
> >> find_package(VTK 8.0 COMPONENTS
> >> vtkCommonCore
> >> vtkCommonDataModel
> >> vtkCommonExecutionModel
> >> vtkCommonMath
> >> vtkFiltersSources
> >> vtkGUISupportQt
> >> vtkInteractionStyle
> >> vtkRenderingCore
> >> vtkRenderingOpenGL2
> >> vtkRenderingVolume
> >> vtkRenderingVolumeOpenGL2
> >> REQUIRED
> >> )
> >>
> >> find_package(Qt5Widgets REQUIRED)
> >>
> >> add_executable(TestCase main.cpp)
> >>
> >> target_link_libraries(TestCase PUBLIC
> >> vtkCommonCore
> >> vtkCommonDataModel
> >> vtkCommonExecutionModel
> >> vtkCommonMath
> >> vtkFiltersSources
> >> vtkGUISupportQt
> >> vtkInteractionStyle
> >> vtkRenderingCore
> >> vtkRenderingOpenGL2
> >> vtkRenderingVolume
> >> vtkRenderingVolumeOpenGL2
> >> Qt5::Widgets
> >> )
> >>
> >> target_include_directories(TestCase PUBLIC
> >> ${VTK_INCLUDE_DIRS}
> >> )
> >>
> >> target_compile_definitions(TestCase PUBLIC
> >> ${VTK_DEFINITIONS}
> >> )
> >>
> >> set_target_properties(TestCase PROPERTIES
> >> CXX_STANDARD 14
> >> CXX_STANDARD_REQUIRED ON
> >> )
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> > --
> >
> > Sankhesh Jhaveri
> >
> > Sr. Research & Development Engineer | Kitware | (518) 881-4417
>
--
Sankhesh Jhaveri *Sr. Research & Development Engineer* | Kitware
<http://www.kitware.com/> | (518) 881-4417
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