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[SOLVED]OpenGL as underlay with qml

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  • mrjjM Offline
    mrjjM Offline
    mrjj
    Lifetime Qt Champion
    wrote on last edited by
    #3

    Hi, what you mean not access ?
    I can see a std::vector and even expand it to see all elements.

    However, I had to do the following
    Tools -> Options -> Debugger -> GDB tab
    Uncheck the option (Load system GDB pretty printers)

    For it to work.

    No idea if its related to what you ask but better to ask than to assume its not :)

    sajis997S 1 Reply Last reply
    0
    • mrjjM mrjj

      Hi, what you mean not access ?
      I can see a std::vector and even expand it to see all elements.

      However, I had to do the following
      Tools -> Options -> Debugger -> GDB tab
      Uncheck the option (Load system GDB pretty printers)

      For it to work.

      No idea if its related to what you ask but better to ask than to assume its not :)

      sajis997S Offline
      sajis997S Offline
      sajis997
      wrote on last edited by
      #4

      @mrjj

      Thanks for the hint , it did solve part of the issue, I do can see the value of the 3rd party library members (glm) and am still working on what may have causing the crash without any hint. I have tried with gdb backtrace command , but it shows only ?? and as mentioned before the application crashes at

      glDrawArrays(GL_LINE_STRIP,0,mShowPoints);
      

      Any further hint over this ?

      Thanks

      1 Reply Last reply
      0
      • mrjjM Offline
        mrjjM Offline
        mrjj
        Lifetime Qt Champion
        wrote on last edited by
        #5

        @sajis997 said:
        have you output value of mShowPoints ?
        Any chance it get bigger than the list ?

        also did you check that
        sizeof(glm::vec3) * mVertices.size()
        yields the expected size?

        1 Reply Last reply
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        • sajis997S Offline
          sajis997S Offline
          sajis997
          wrote on last edited by
          #6

          Hi

          I am sorry. I would like to ask, did you manage all the element values of std::vectorglm::vec3 mVertices ? I still cannot , even after I made the necessary changes as you suggested. It shows "not accessible".

          Thanks

          mrjjM 1 Reply Last reply
          0
          • sajis997S sajis997

            Hi

            I am sorry. I would like to ask, did you manage all the element values of std::vectorglm::vec3 mVertices ? I still cannot , even after I made the necessary changes as you suggested. It shows "not accessible".

            Thanks

            mrjjM Offline
            mrjjM Offline
            mrjj
            Lifetime Qt Champion
            wrote on last edited by
            #7

            @sajis997
            Hi well I did not try with that type (glm::vec3) but
            for my own std::vector with all types I can see inside. even expand the inner struct/class.
            Are you on windows or linux/mac?

            sajis997S 1 Reply Last reply
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            • mrjjM mrjj

              @sajis997
              Hi well I did not try with that type (glm::vec3) but
              for my own std::vector with all types I can see inside. even expand the inner struct/class.
              Are you on windows or linux/mac?

              sajis997S Offline
              sajis997S Offline
              sajis997
              wrote on last edited by
              #8

              @mrjj

              I am at Ubuntu Linux with Qt 5.4.1 on it.

              mrjjM 1 Reply Last reply
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              • sajis997S sajis997

                @mrjj

                I am at Ubuntu Linux with Qt 5.4.1 on it.

                mrjjM Offline
                mrjjM Offline
                mrjj
                Lifetime Qt Champion
                wrote on last edited by
                #9

                @sajis997
                Strange it was exactly on ubuntu I had that
                problem also and the after the option It did show.

                if you make another list say with <int>, it is still not willing to show it ?

                sajis997S 1 Reply Last reply
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                • mrjjM mrjj

                  @sajis997
                  Strange it was exactly on ubuntu I had that
                  problem also and the after the option It did show.

                  if you make another list say with <int>, it is still not willing to show it ?

                  sajis997S Offline
                  sajis997S Offline
                  sajis997
                  wrote on last edited by
                  #10

                  @mrjj

                  I checked with the vector :

                  std::vector<GLushort> mIndices;
                  

                  And I do see all the values inside the vector for type GLushort , but not for type glm::vec3 type. The latter shows "not accessible".
                  In that case I cannot be sure if the vector is getting populated with the value I am looking for which may have caused the crash at the point mentioned in my last post.

                  Thanks

                  1 Reply Last reply
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                  • mrjjM Offline
                    mrjjM Offline
                    mrjj
                    Lifetime Qt Champion
                    wrote on last edited by
                    #11

                    @sajis997 said:

                    glm::vec3

                    Ok. Maybe the namespace confuses it.
                    If you press F2 and see definition and then copy it to you program to say
                    vec3Test
                    and make a list with that, will it see it then ?
                    Also you could try to switch to clang code model and see if that helps. (in options)

                    1 Reply Last reply
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                    • sajis997S Offline
                      sajis997S Offline
                      sajis997
                      wrote on last edited by
                      #12

                      I checked the value of size of the vector mVertices and the value of the variable mShowPoints and both of them are showing the same value in the debugger. The application still crashes at

                      glDrawArrays(GL_LINE_STRIP,0,mShowPoints);
                      

                      Any more hint to look into ?

                      1 Reply Last reply
                      0

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