[vtk-developers] Volume won't show on Win7/Intel HD4600 with QVTKOpenGLWidget in 8.0.0.rc1

Wed May 24 17:02:31 EDT 2017

2017-05-24 22:49 GMT+02:00 Elvis Stansvik <elvis.stansvik at orexplore.com>:
> 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 se 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.

Forgot to say: Thanks a lot for trying to reproduce Sankhesh.

I've now put up the compiled self-contained test case here:

    http://dose.se/~estan/voltestcase-inst.zip (18 MB)

If anyone with Windows (preferably Windows 7 if possible) + Intel
graphics could try running this test case with "TestCase 1" and see if
the volume shows up, that would be great.

(Running the test case with argc > 2 will make it use
QVTKOpenGLWidget, and is where I'm having trouble).

Elvis

>
> 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