[vtk-developers] Volume won't show on Win7/Intel HD4600 with QVTKOpenGLWidget in 8.0.0.rc1
Elvis Stansvik
elvis.stansvik at orexplore.com
Wed May 24 16:49:13 EDT 2017
2017-05-24 22:20 GMT+02:00 Sankhesh Jhaveri <sankhesh.jhaveri at kitware.com>:
> Hi Elvis,
>
> Unfortunately, I wasn’t able to reproduce this issue. :(
>
> I don’t have a Windows machine with an Intel graphics card but tried
> ParaView on a couple of Windows machines as well as a Mac (with an Intel
> HD5600). Worked fine.
Alright. Call for help then: Anyone else have a Windows 7 machine with
Intel graphics? Would be great if someone could reproduce.
I could put up my build of the test case as a self-contained .zip, to
make it easy to test.
>
> At this point, I am inclined to think that the graphics drivers on your
> Windows machine may need updating.
Hm, but it works fine if I don't use QVTKOpenGLWidget, and just use a
plain vtkRenderWindow + vtkRenderWindowInteractor. Wouldn't that
suggest that the drivers are capable enough, and that the problem is
somehow in QVTKOpenGLWidget (or QOpenGLWidget)?
Elvis
>
>
> On Wed, May 24, 2017 at 12:16 PM Sankhesh Jhaveri
> <sankhesh.jhaveri at kitware.com> wrote:
>>
>> 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 | (518) 881-4417
>
> --
>
> Sankhesh Jhaveri
>
> Sr. Research & Development Engineer | Kitware | (518) 881-4417
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