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A weird bug? Why is there no spatial depth in my 3D scene?

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qt3dqt 5.7
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  • F Finn

    @kshegunov No! The images I am showing just the result of swapping the order of instantiation of the entities. To rephrase my problem: there is no depth in the scene. Furthermore, the spheres do not intersect each other if I understood you correctly. The small one has a radius of 2, the large has a radius of 5, and their centers have a distance of 10 => they do not intersect.

    What I am actually trying to do is plotting large molecules in ball-and-stick representation and the lastly created atoms are always in the foreground of the scene.

    As I tried to explain above: there is a different outcome if I create the sphere in a different order.
    So if I write

    Qt3DCore::QEntity* redBigSphere = new Qt3DCore::QEntity(root);
    Qt3DCore::QEntity* smallGreenSphere = new Qt3DCore::QEntity(root);
    

    instead of

    Qt3DCore::QEntity* smallGreenSphere = new Qt3DCore::QEntity(root);
    Qt3DCore::QEntity* redBigSphere = new Qt3DCore::QEntity(root);
    

    the scene looks differently. In both cases manual rotation of the scene makes this problem more obvious.

    Please, try to compile my example and see for yourself. If you do so, please rotate the scene by 180°. I am going crazy over this. It must be either something extremely dumb what I am doing wrong or I need to understand something more advanced of what I am not aware. I tried to figure this out the last two days but without success. I also tried to compile the example from http://doc.qt.io/qt-5/qt3d-deferred-renderer-cpp-example.html example but somehow some files (e.g. the main.cpp) seem to be missing. I am really trying hard. Help is really greatly appreciated.

    kshegunovK Offline
    kshegunovK Offline
    kshegunov
    Moderators
    wrote on last edited by kshegunov
    #6

    Swapping the order of instantiation did not change what I saw. One is still in front of the other, because relative to the angle you've set it is in front. If I move the camera it's clearly visible that it's a side look to the scene, and as the angle (compared to the axis connecting both spheres) increases it's obvious they're separated by a distance. Your example code works fine for me.

    Read and abide by the Qt Code of Conduct

    F 1 Reply Last reply
    1
    • kshegunovK kshegunov

      Swapping the order of instantiation did not change what I saw. One is still in front of the other, because relative to the angle you've set it is in front. If I move the camera it's clearly visible that it's a side look to the scene, and as the angle (compared to the axis connecting both spheres) increases it's obvious they're separated by a distance. Your example code works fine for me.

      F Offline
      F Offline
      Finn
      wrote on last edited by Finn
      #7

      @kshegunov It did not change what you saw? What you described is exactly what I want. Why is it not working in my case?
      Thank you so much for trying it out!
      Really, what is wrong with my Qt3D ??

      kshegunovK 1 Reply Last reply
      1
      • F Finn

        @kshegunov It did not change what you saw? What you described is exactly what I want. Why is it not working in my case?
        Thank you so much for trying it out!
        Really, what is wrong with my Qt3D ??

        kshegunovK Offline
        kshegunovK Offline
        kshegunov
        Moderators
        wrote on last edited by kshegunov
        #8

        @Finn said in A Qt3D beginners question: Why is there no depth in my 3D scene?:

        It did not change what you saw?

        Nope, not a bit.

        Really, what is wrong with my Qt3D ??

        Probably nothing. If I had to hazard a guess you had object files left over from another build while testing. Try a full rebuild between the instantiation swaps and I'm sure you'd be convinced there's no problem.

        Read and abide by the Qt Code of Conduct

        F 1 Reply Last reply
        1
        • kshegunovK kshegunov

          @Finn said in A Qt3D beginners question: Why is there no depth in my 3D scene?:

          It did not change what you saw?

          Nope, not a bit.

          Really, what is wrong with my Qt3D ??

          Probably nothing. If I had to hazard a guess you had object files left over from another build while testing. Try a full rebuild between the instantiation swaps and I'm sure you'd be convinced there's no problem.

          F Offline
          F Offline
          Finn
          wrote on last edited by
          #9

          @kshegunov I can really exclude this. I reproduced this very often before I made the efforts to post this. Also now I am reproducing it. Furthermore, if I rotate the orbit view by ~180° around the z-axis manually with the mouse, it still does not change the fact that the lastly instantiated sphere is still in front. Therefore, it is not possible that I am just confusing the sphere positions here. While doing the rotation around the z-axis, the smallGreenSphere changes its size as it should do because it is not in the ViewCenter but, as already said, the spatial depth is wrong. The lastly created QEntity is always in the foreground and the other objects are behind it.
          Of course, I experience this also with the ball-and-stick molecules which I originally want to visualize. This applies also to QCylinders and whatsoever.

          Maybe I found a weird bug here?

          kshegunovK 1 Reply Last reply
          1
          • m.sueM Offline
            m.sueM Offline
            m.sue
            wrote on last edited by
            #10

            Hi,
            I cannot reproduce this problem, either.
            I remember, though, I had similar issues using QPhongAlphaMaterial when I tested Qt3D. For the time being(?), we stay with QOpenGLWindow, as it has no known bugs and most important to us produces no 13% CPU load (in release version) with just two cubes to show.
            -Michael.

            1 Reply Last reply
            0
            • F Finn

              @kshegunov I can really exclude this. I reproduced this very often before I made the efforts to post this. Also now I am reproducing it. Furthermore, if I rotate the orbit view by ~180° around the z-axis manually with the mouse, it still does not change the fact that the lastly instantiated sphere is still in front. Therefore, it is not possible that I am just confusing the sphere positions here. While doing the rotation around the z-axis, the smallGreenSphere changes its size as it should do because it is not in the ViewCenter but, as already said, the spatial depth is wrong. The lastly created QEntity is always in the foreground and the other objects are behind it.
              Of course, I experience this also with the ball-and-stick molecules which I originally want to visualize. This applies also to QCylinders and whatsoever.

              Maybe I found a weird bug here?

              kshegunovK Offline
              kshegunovK Offline
              kshegunov
              Moderators
              wrote on last edited by
              #11

              @Finn said in A weird bug? Why is there no spatial depth in my 3D scene?:

              Maybe I found a weird bug here?

              It is possible.You can take a peek here to see if something's known.
              What's your OS and how did you install Qt3D?

              Read and abide by the Qt Code of Conduct

              F 1 Reply Last reply
              0
              • kshegunovK kshegunov

                @Finn said in A weird bug? Why is there no spatial depth in my 3D scene?:

                Maybe I found a weird bug here?

                It is possible.You can take a peek here to see if something's known.
                What's your OS and how did you install Qt3D?

                F Offline
                F Offline
                Finn
                wrote on last edited by Finn
                #12

                @kshegunov My OS is ubuntu 16.04 LTS and I got Qt 5.7 via the qt-unified-x64-2.03-1-online.run executable. In the terminal, I went into my Qt directory
                /home/<username>/Qt/5.7/Src where I just entered

                ./configure
                make
                sudo make install
                

                When wanted to compile a Qt3D example, I got some linking errors saying something about missing Qt3D libraries (which I cannot recall anymore). I could solve this by entering the following which I found in some forum:

                sudo apt-get install libfontconfig1-dev libfreetype6-dev libx11-dev libxext-dev libxfixes-dev libxi-dev libxrender-dev libxcb1-dev libx11-xcb-dev libxcb-glx0-dev libxcb-keysyms1-dev libxcb-image0-dev libxcb-shm0-dev libxcb-icccm4-dev libxcb-sync0-dev libxcb-xfixes0-dev libxcb-shape0-dev libxcb-randr0-dev libxcb-render-util0-dev libxcb-xinerama0-de
                

                Maybe this is the origin of my problems?
                Should I consider reinstalling Qt completely and what would be the cleanest way to do it? Thanks a lot for your help.

                kshegunovK 1 Reply Last reply
                0
                • F Finn

                  @kshegunov My OS is ubuntu 16.04 LTS and I got Qt 5.7 via the qt-unified-x64-2.03-1-online.run executable. In the terminal, I went into my Qt directory
                  /home/<username>/Qt/5.7/Src where I just entered

                  ./configure
                  make
                  sudo make install
                  

                  When wanted to compile a Qt3D example, I got some linking errors saying something about missing Qt3D libraries (which I cannot recall anymore). I could solve this by entering the following which I found in some forum:

                  sudo apt-get install libfontconfig1-dev libfreetype6-dev libx11-dev libxext-dev libxfixes-dev libxi-dev libxrender-dev libxcb1-dev libx11-xcb-dev libxcb-glx0-dev libxcb-keysyms1-dev libxcb-image0-dev libxcb-shm0-dev libxcb-icccm4-dev libxcb-sync0-dev libxcb-xfixes0-dev libxcb-shape0-dev libxcb-randr0-dev libxcb-render-util0-dev libxcb-xinerama0-de
                  

                  Maybe this is the origin of my problems?
                  Should I consider reinstalling Qt completely and what would be the cleanest way to do it? Thanks a lot for your help.

                  kshegunovK Offline
                  kshegunovK Offline
                  kshegunov
                  Moderators
                  wrote on last edited by
                  #13

                  @Finn said in A weird bug? Why is there no spatial depth in my 3D scene?:

                  Maybe this is the origin of my problems?

                  It's certainly possble.

                  sudo make install
                  

                  Why do that? Your distro already provides a Qt release so my suspicion is there are some files (partially) overwritten. What I suggest is to reinstall you distro's Qt (by means of the package manager), then to configure the Qt you downloaded with a prefix (don't forget to make clean before doing the configure, or even to delete the whole folder and recreate it through the Qt installer), e.g.:

                  ./configure -prefix /opt/Qt-5.7
                  

                  make and then it's safe to make install, because the files will go to /opt/Qt-5.7.
                  Then you can configure a kit in creator (assuming this is what you use) that will use this version of Qt (in /opt/Qt-5.7).

                  Read and abide by the Qt Code of Conduct

                  F 1 Reply Last reply
                  1
                  • kshegunovK kshegunov

                    @Finn said in A weird bug? Why is there no spatial depth in my 3D scene?:

                    Maybe this is the origin of my problems?

                    It's certainly possble.

                    sudo make install
                    

                    Why do that? Your distro already provides a Qt release so my suspicion is there are some files (partially) overwritten. What I suggest is to reinstall you distro's Qt (by means of the package manager), then to configure the Qt you downloaded with a prefix (don't forget to make clean before doing the configure, or even to delete the whole folder and recreate it through the Qt installer), e.g.:

                    ./configure -prefix /opt/Qt-5.7
                    

                    make and then it's safe to make install, because the files will go to /opt/Qt-5.7.
                    Then you can configure a kit in creator (assuming this is what you use) that will use this version of Qt (in /opt/Qt-5.7).

                    F Offline
                    F Offline
                    Finn
                    wrote on last edited by
                    #14

                    @kshegunov No, I completely reinstalled everything to the folder /opt/Qt-5.7 by following your instructions and those in the tutorial (https://wiki.qt.io/Install_Qt_5_on_Ubuntu). Before, I deleted everything but the result is the same. So far I used CLion2016 and now I also tried the QtCreator - still the same outcome.

                    I also added some axes (x=red, y=green, z=blue), which are instantiated after the spheres.

                    view 1
                    view 2

                    Other ideas?

                    main.cpp

                    #include <QGuiApplication>
                    #include <Qt3DCore>
                    #include <Qt3DRender>
                    #include <Qt3DExtras>
                    
                    Qt3DCore::QEntity* createTestScene() {
                    
                      Qt3DCore::QEntity* root = new Qt3DCore::QEntity;
                      Qt3DCore::QEntity* smallGreenSphere = new Qt3DCore::QEntity(root);
                      Qt3DCore::QEntity* bigRedSphere = new Qt3DCore::QEntity(root);
                    
                    
                      Qt3DExtras::QSphereMesh* bigMesh = new Qt3DExtras::QSphereMesh;
                      bigMesh->setRadius(5);
                      bigMesh->setRings(100);
                      bigMesh->setSlices(20);
                    
                      Qt3DExtras::QSphereMesh* smallMesh = new Qt3DExtras::QSphereMesh;
                      smallMesh->setRadius(2);
                      smallMesh->setRings(100);
                      smallMesh->setSlices(20);
                    
                      Qt3DExtras::QPhongMaterial* redMaterial = new Qt3DExtras::QPhongMaterial;
                      redMaterial->setSpecular(Qt::white);
                      redMaterial->setShininess(10);
                      redMaterial->setAmbient(Qt::red);
                    
                      Qt3DExtras::QPhongMaterial* greenMaterial = new Qt3DExtras::QPhongMaterial;
                      greenMaterial->setSpecular(Qt::white);
                      greenMaterial->setShininess(10);
                      greenMaterial->setAmbient(Qt::green);
                    
                    
                      Qt3DCore::QTransform* transform =  new Qt3DCore::QTransform;
                      transform->setTranslation(QVector3D(0,0,10));
                    
                      bigRedSphere->addComponent(redMaterial);
                      bigRedSphere->addComponent(bigMesh);
                    
                      smallGreenSphere->addComponent(greenMaterial);
                      smallGreenSphere->addComponent(smallMesh);
                      smallGreenSphere->addComponent(transform);
                    
                      Qt3DCore::QEntity* xaxis = new Qt3DCore::QEntity(root);
                      Qt3DCore::QEntity* yaxis = new Qt3DCore::QEntity(root);
                      Qt3DCore::QEntity* zaxis = new Qt3DCore::QEntity(root);
                    
                      Qt3DExtras::QCylinderMesh* cylinderMesh = new Qt3DExtras::QCylinderMesh;
                      cylinderMesh->setRadius(0.2);
                      cylinderMesh->setLength(20);
                      cylinderMesh->setRings(100);
                      cylinderMesh->setSlices(20);
                    
                      Qt3DExtras::QPhongMaterial* blueMaterial = new Qt3DExtras::QPhongMaterial;
                      blueMaterial->setSpecular(Qt::white);
                      blueMaterial->setShininess(10);
                      blueMaterial->setAmbient(Qt::blue);
                    
                      double pi = 3.14159265359;
                      Qt3DCore::QTransform* xTransform = new Qt3DCore::QTransform();
                      xTransform->setTranslation(QVector3D(10,0,0));
                      xTransform->setRotation(QQuaternion::fromAxisAndAngle(QVector3D(0,0,1),90));
                      Qt3DCore::QTransform* yTransform = new Qt3DCore::QTransform();
                      yTransform->setTranslation(QVector3D(0,10,0));
                      Qt3DCore::QTransform* zTransform = new Qt3DCore::QTransform();
                      zTransform->setTranslation(QVector3D(0,0,10));
                      zTransform->setRotation(QQuaternion::fromAxisAndAngle(QVector3D(1,0,0),90));
                    
                    
                      xaxis->addComponent(cylinderMesh);
                      xaxis->addComponent(redMaterial);
                      xaxis->addComponent(xTransform);
                      yaxis->addComponent(cylinderMesh);
                      yaxis->addComponent(greenMaterial);
                      yaxis->addComponent(yTransform);
                      zaxis->addComponent(cylinderMesh);
                      zaxis->addComponent(blueMaterial);
                      zaxis->addComponent(zTransform);
                    
                      return root;
                    }
                    
                    
                    int main(int argc, char* argv[]) {
                    
                      QGuiApplication app(argc, argv);
                      Qt3DExtras::Qt3DWindow view;
                      Qt3DCore::QEntity* scene = createTestScene();
                    
                      // camera
                      Qt3DRender::QCamera *camera = view.camera();
                      camera->lens()->setPerspectiveProjection(45, 16./9., 0.1,1000.);
                      camera->setPosition(QVector3D(45,15,45));
                      camera->setViewCenter(QVector3D(0, 0, 0));
                    
                      // manipulator
                      Qt3DExtras::QOrbitCameraController* manipulator = new Qt3DExtras::QOrbitCameraController(scene);
                      manipulator->setLinearSpeed(50);
                      manipulator->setLookSpeed(180);
                      manipulator->setCamera(camera);
                    
                      view.setRootEntity(scene);
                    
                      view.show();
                    
                      return app.exec();
                    }
                    
                    

                    CMakeLists.txt

                    cmake_minimum_required(VERSION 3.2)
                    
                    project(QtCreatorTest)
                    
                    find_package(Qt5 REQUIRED COMPONENTS
                            Core
                            Gui
                            Widgets
                            3DCore
                            3DExtras
                            3DRender
                            3DInput
                            )
                    
                    add_executable("${PROJECT_NAME}_main" main.cpp)
                    
                    target_link_libraries("${PROJECT_NAME}_main"
                            Qt5::Core
                            Qt5::Gui
                            Qt5::Widgets
                            Qt5::3DCore
                            Qt5::3DExtras
                            Qt5::3DRender
                            Qt5::3DInput
                            )
                    
                    
                    kshegunovK 1 Reply Last reply
                    1
                    • F Finn

                      @kshegunov No, I completely reinstalled everything to the folder /opt/Qt-5.7 by following your instructions and those in the tutorial (https://wiki.qt.io/Install_Qt_5_on_Ubuntu). Before, I deleted everything but the result is the same. So far I used CLion2016 and now I also tried the QtCreator - still the same outcome.

                      I also added some axes (x=red, y=green, z=blue), which are instantiated after the spheres.

                      view 1
                      view 2

                      Other ideas?

                      main.cpp

                      #include <QGuiApplication>
                      #include <Qt3DCore>
                      #include <Qt3DRender>
                      #include <Qt3DExtras>
                      
                      Qt3DCore::QEntity* createTestScene() {
                      
                        Qt3DCore::QEntity* root = new Qt3DCore::QEntity;
                        Qt3DCore::QEntity* smallGreenSphere = new Qt3DCore::QEntity(root);
                        Qt3DCore::QEntity* bigRedSphere = new Qt3DCore::QEntity(root);
                      
                      
                        Qt3DExtras::QSphereMesh* bigMesh = new Qt3DExtras::QSphereMesh;
                        bigMesh->setRadius(5);
                        bigMesh->setRings(100);
                        bigMesh->setSlices(20);
                      
                        Qt3DExtras::QSphereMesh* smallMesh = new Qt3DExtras::QSphereMesh;
                        smallMesh->setRadius(2);
                        smallMesh->setRings(100);
                        smallMesh->setSlices(20);
                      
                        Qt3DExtras::QPhongMaterial* redMaterial = new Qt3DExtras::QPhongMaterial;
                        redMaterial->setSpecular(Qt::white);
                        redMaterial->setShininess(10);
                        redMaterial->setAmbient(Qt::red);
                      
                        Qt3DExtras::QPhongMaterial* greenMaterial = new Qt3DExtras::QPhongMaterial;
                        greenMaterial->setSpecular(Qt::white);
                        greenMaterial->setShininess(10);
                        greenMaterial->setAmbient(Qt::green);
                      
                      
                        Qt3DCore::QTransform* transform =  new Qt3DCore::QTransform;
                        transform->setTranslation(QVector3D(0,0,10));
                      
                        bigRedSphere->addComponent(redMaterial);
                        bigRedSphere->addComponent(bigMesh);
                      
                        smallGreenSphere->addComponent(greenMaterial);
                        smallGreenSphere->addComponent(smallMesh);
                        smallGreenSphere->addComponent(transform);
                      
                        Qt3DCore::QEntity* xaxis = new Qt3DCore::QEntity(root);
                        Qt3DCore::QEntity* yaxis = new Qt3DCore::QEntity(root);
                        Qt3DCore::QEntity* zaxis = new Qt3DCore::QEntity(root);
                      
                        Qt3DExtras::QCylinderMesh* cylinderMesh = new Qt3DExtras::QCylinderMesh;
                        cylinderMesh->setRadius(0.2);
                        cylinderMesh->setLength(20);
                        cylinderMesh->setRings(100);
                        cylinderMesh->setSlices(20);
                      
                        Qt3DExtras::QPhongMaterial* blueMaterial = new Qt3DExtras::QPhongMaterial;
                        blueMaterial->setSpecular(Qt::white);
                        blueMaterial->setShininess(10);
                        blueMaterial->setAmbient(Qt::blue);
                      
                        double pi = 3.14159265359;
                        Qt3DCore::QTransform* xTransform = new Qt3DCore::QTransform();
                        xTransform->setTranslation(QVector3D(10,0,0));
                        xTransform->setRotation(QQuaternion::fromAxisAndAngle(QVector3D(0,0,1),90));
                        Qt3DCore::QTransform* yTransform = new Qt3DCore::QTransform();
                        yTransform->setTranslation(QVector3D(0,10,0));
                        Qt3DCore::QTransform* zTransform = new Qt3DCore::QTransform();
                        zTransform->setTranslation(QVector3D(0,0,10));
                        zTransform->setRotation(QQuaternion::fromAxisAndAngle(QVector3D(1,0,0),90));
                      
                      
                        xaxis->addComponent(cylinderMesh);
                        xaxis->addComponent(redMaterial);
                        xaxis->addComponent(xTransform);
                        yaxis->addComponent(cylinderMesh);
                        yaxis->addComponent(greenMaterial);
                        yaxis->addComponent(yTransform);
                        zaxis->addComponent(cylinderMesh);
                        zaxis->addComponent(blueMaterial);
                        zaxis->addComponent(zTransform);
                      
                        return root;
                      }
                      
                      
                      int main(int argc, char* argv[]) {
                      
                        QGuiApplication app(argc, argv);
                        Qt3DExtras::Qt3DWindow view;
                        Qt3DCore::QEntity* scene = createTestScene();
                      
                        // camera
                        Qt3DRender::QCamera *camera = view.camera();
                        camera->lens()->setPerspectiveProjection(45, 16./9., 0.1,1000.);
                        camera->setPosition(QVector3D(45,15,45));
                        camera->setViewCenter(QVector3D(0, 0, 0));
                      
                        // manipulator
                        Qt3DExtras::QOrbitCameraController* manipulator = new Qt3DExtras::QOrbitCameraController(scene);
                        manipulator->setLinearSpeed(50);
                        manipulator->setLookSpeed(180);
                        manipulator->setCamera(camera);
                      
                        view.setRootEntity(scene);
                      
                        view.show();
                      
                        return app.exec();
                      }
                      
                      

                      CMakeLists.txt

                      cmake_minimum_required(VERSION 3.2)
                      
                      project(QtCreatorTest)
                      
                      find_package(Qt5 REQUIRED COMPONENTS
                              Core
                              Gui
                              Widgets
                              3DCore
                              3DExtras
                              3DRender
                              3DInput
                              )
                      
                      add_executable("${PROJECT_NAME}_main" main.cpp)
                      
                      target_link_libraries("${PROJECT_NAME}_main"
                              Qt5::Core
                              Qt5::Gui
                              Qt5::Widgets
                              Qt5::3DCore
                              Qt5::3DExtras
                              Qt5::3DRender
                              Qt5::3DInput
                              )
                      
                      
                      kshegunovK Offline
                      kshegunovK Offline
                      kshegunov
                      Moderators
                      wrote on last edited by kshegunov
                      #15

                      @Finn
                      This is really strange. I ran your code and it works perfectly fine for me (I use qmake with a kit for Qt 5.7 though). Here's what I see:

                      And my project file is absolutely standard:

                      QT       += core gui 3dcore 3drender 3dextras
                      
                      TARGET = balls-test
                      TEMPLATE = app
                      
                      SOURCES += main.cpp
                      

                      [Edit: Fixed broken link]

                      Read and abide by the Qt Code of Conduct

                      F 1 Reply Last reply
                      1
                      • kshegunovK kshegunov

                        @Finn
                        This is really strange. I ran your code and it works perfectly fine for me (I use qmake with a kit for Qt 5.7 though). Here's what I see:

                        And my project file is absolutely standard:

                        QT       += core gui 3dcore 3drender 3dextras
                        
                        TARGET = balls-test
                        TEMPLATE = app
                        
                        SOURCES += main.cpp
                        

                        [Edit: Fixed broken link]

                        F Offline
                        F Offline
                        Finn
                        wrote on last edited by
                        #16

                        @kshegunov I tried using qmake for building but again the same outcome.

                        kshegunovK 1 Reply Last reply
                        0
                        • F Finn

                          @kshegunov I tried using qmake for building but again the same outcome.

                          kshegunovK Offline
                          kshegunovK Offline
                          kshegunov
                          Moderators
                          wrote on last edited by
                          #17

                          Honestly, I'd be surprised if there was a difference between using cmake and qmake. And to be completely frank I don't know what might be the cause of the problem. My current best advice is to either bring the question to the mailing list, where hopefully one of the developers of Qt3D will pick it up (but after you check there's no open bugs on this), or try and wait for some other suggestion from other of our members here.

                          Kind regards.

                          Read and abide by the Qt Code of Conduct

                          F 1 Reply Last reply
                          1
                          • kshegunovK kshegunov

                            Honestly, I'd be surprised if there was a difference between using cmake and qmake. And to be completely frank I don't know what might be the cause of the problem. My current best advice is to either bring the question to the mailing list, where hopefully one of the developers of Qt3D will pick it up (but after you check there's no open bugs on this), or try and wait for some other suggestion from other of our members here.

                            Kind regards.

                            F Offline
                            F Offline
                            Finn
                            wrote on last edited by Finn
                            #18

                            I tried it on my private MacBook Pro with MacOS Sierra 10.12.1 and installed Qt5 via brew install qt5. The result is still the same. What on earth can be the reason that it is working for you guys and not for me? Do I need some other libraries or build options?

                            1 Reply Last reply
                            0
                            • ? Offline
                              ? Offline
                              A Former User
                              wrote on last edited by
                              #19

                              Sorry, as a noobie, I can't offer any insight, but I ran the code, and I'm getting the same as Finn. I'm on Qt 5.7 on Win 10.

                              alt text

                              Could it be CPU or GPU related? I'm on a 6coreAMD machine.

                              F 1 Reply Last reply
                              1
                              • ? A Former User

                                Sorry, as a noobie, I can't offer any insight, but I ran the code, and I'm getting the same as Finn. I'm on Qt 5.7 on Win 10.

                                alt text

                                Could it be CPU or GPU related? I'm on a 6coreAMD machine.

                                F Offline
                                F Offline
                                Finn
                                wrote on last edited by
                                #20

                                @Ian-Bray Thank you for your reply, this was very helpful! I would suggest that someone more experienced than me should report this as a bug.

                                kshegunovK 1 Reply Last reply
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                                • F Finn

                                  @Ian-Bray Thank you for your reply, this was very helpful! I would suggest that someone more experienced than me should report this as a bug.

                                  kshegunovK Offline
                                  kshegunovK Offline
                                  kshegunov
                                  Moderators
                                  wrote on last edited by kshegunov
                                  #21

                                  @Finn said in A weird bug? Why is there no spatial depth in my 3D scene?:

                                  this was very helpfu

                                  Indeed, it was.

                                  I would suggest that someone more experienced than me should report this as a bug.

                                  There's nothing to it, you just describe the problem and attach the screenshots and the code from upstairs as a minimal reproducible example (preferably with a simple project file). As for the problem itself it may be helpful if we can squeeze some more information out. I may be running a newer (or older) version of Qt compared to you. Can you both state the full version (with patch number). I'm running Qt 5.7.2 built from git some time ago on a Linux 4.8.11 kernel.

                                  Read and abide by the Qt Code of Conduct

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                                  • kshegunovK kshegunov

                                    @Finn said in A weird bug? Why is there no spatial depth in my 3D scene?:

                                    this was very helpfu

                                    Indeed, it was.

                                    I would suggest that someone more experienced than me should report this as a bug.

                                    There's nothing to it, you just describe the problem and attach the screenshots and the code from upstairs as a minimal reproducible example (preferably with a simple project file). As for the problem itself it may be helpful if we can squeeze some more information out. I may be running a newer (or older) version of Qt compared to you. Can you both state the full version (with patch number). I'm running Qt 5.7.2 built from git some time ago on a Linux 4.8.11 kernel.

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                                    A Former User
                                    wrote on last edited by
                                    #22

                                    @kshegunov

                                    I'm using qt-opensource-windows-x86-mingw530-5.7.0 on Win 10, if I get a chance I'll try it on Linux later.

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                                      A Former User
                                      wrote on last edited by
                                      #23

                                      Sorry, this isn't going to be helpful. Just to report that both slabs of code crashed on Qt 5.7.1 GCC 64 on latest Mint.
                                      Possibly due to lack of RAM. Not sure.

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                                      • ? A Former User

                                        Sorry, this isn't going to be helpful. Just to report that both slabs of code crashed on Qt 5.7.1 GCC 64 on latest Mint.
                                        Possibly due to lack of RAM. Not sure.

                                        F Offline
                                        F Offline
                                        Finn
                                        wrote on last edited by
                                        #24

                                        @Ian-Bray With Qt 5.7.1 the example works now perfectly fine for me.

                                        kshegunovK ? 2 Replies Last reply
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                                        • F Finn

                                          @Ian-Bray With Qt 5.7.1 the example works now perfectly fine for me.

                                          kshegunovK Offline
                                          kshegunovK Offline
                                          kshegunov
                                          Moderators
                                          wrote on last edited by
                                          #25

                                          Then probably it's a bug that was fixed with the patch version in the meantime. Cheers!

                                          Read and abide by the Qt Code of Conduct

                                          ? 1 Reply Last reply
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