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QtWS25 Last Chance

Beginning in Qt with OpenGL

Scheduled Pinned Locked Moved Game Development
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  • C Offline
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    Chuck Gao
    wrote on last edited by
    #4

    Do you build for desktop or symbian device ? Can you send your code to me, i can try it on my computer for you. Email: chuckgao.cg@gmail.com

    Chuck

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      Dinesh Balu
      wrote on last edited by
      #5

      Sure,... Thank you Chuck.Gao

      :)

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      • C Offline
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        Chuck Gao
        wrote on last edited by
        #6

        [quote author="Dinesh Balu" date="1306132718"]Sure,... Thank you Chuck.Gao[/quote]

        The code have some wrong syntax. right one is modified

        1. GamePlay::InitializeGL() --> GamePlay::initializeGL() in both header and source file
        2. glViewPort --> glViewport
        3. draw() --> GamePlay::draw()

        I can build it on both Desktop(also simulator) and Symbian device, but it'll crash some where.

        Chuck

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          Dinesh Balu
          wrote on last edited by
          #7

          k, I have change it as you said... but still the same errors are there...

          did you get the output?

          :)

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          • C Offline
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            Chuck Gao
            wrote on last edited by
            #8

            no, it's OK for me. Maybe there have some problem with your environment or SDK, i'm not sure. You can paste the log on this thread, i think someone can resolve your problem

            Chuck

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              Dinesh Balu
              wrote on last edited by
              #9

              how to get the log? I couldn't copy the error, it's disabled...!
              There is no log file in the debug directory..

              Is it would work if I re-install the SDK

              :)

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                ZapB
                wrote on last edited by
                #10

                Have you added #include <gl.h> yourself? If so there is no need, QGLWidget takes care of all that for you. I seem to think there can be issues if OpenGL headers and Windows headers are #include'd in the wrong order.

                Nokia Certified Qt Specialist
                Interested in hearing about Qt related work

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                  Dinesh Balu
                  wrote on last edited by
                  #11

                  No, I didn't add them... now I'm re-installing the Qt SDK...

                  :)

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                    Chuck Gao
                    wrote on last edited by
                    #12

                    [quote author="Dinesh Balu" date="1306142398"]No, I didn't add them... now I'm re-installing the Qt SDK...[/quote]

                    Good luck :-)

                    Chuck

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                      Dinesh Balu
                      wrote on last edited by
                      #13

                      Um.... Let's see... what if it's still not working :(

                      :)

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                        Dinesh Balu
                        wrote on last edited by
                        #14

                        I have re-installed the SDK... Now the errors are gone ,.. and application is running successfully.. except I'm not getting the exact output....

                        @Chuck.Gao : what was the output you got with the project?

                        The Project type is Qt Mobile Application , doesn't it support OpenGL and should I go for OpenGL ES...

                        :)

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                          Chuck Gao
                          wrote on last edited by
                          #15

                          The mobile use OpenGL ES, but not OpenGL.
                          Output for what ? Sorry, i can't see anything until the application crash.

                          Chuck

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                            Dinesh Balu
                            wrote on last edited by
                            #16

                            [quote author="Chuck.Gao" date="1306134308"]no, it's OK for me. Maybe there have some problem with your environment or SDK, i'm not sure. You can paste the log on this thread, i think someone can resolve your problem[/quote]

                            You said that you got my app running on your sdk... right?
                            did you get any output in that?

                            I have drawn a triangle in that app...

                            how to use OpenGL ES with QT

                            :)

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                              Chuck Gao
                              wrote on last edited by
                              #17

                              I can build it on both Desktop(also simulator) and Symbian device, but it’ll crash some where.
                              Qt will use OpenGL ES automatically if you build Symbian based application.

                              Chuck

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                              • D Offline
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                                Dinesh Balu
                                wrote on last edited by
                                #18

                                [quote author="Chuck.Gao" date="1306221357"]I can build it on both Desktop(also simulator) and Symbian device, but it’ll crash some where.
                                [/quote]

                                You mean the application that I sent you will crash somewhere,...

                                [quote author="Chuck.Gao" date="1306221357"]Qt will use OpenGL ES automatically if you build Symbian based application.
                                [/quote]

                                Then why is it not working.... I got the simulator window opened but the triangle is not drawn on the screen...

                                :)

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                                  ZapB
                                  wrote on last edited by
                                  #19

                                  That's for you to debug. It's your app. Run it in the debugger and see why it crashes.

                                  Nokia Certified Qt Specialist
                                  Interested in hearing about Qt related work

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                                    Dinesh Balu
                                    wrote on last edited by
                                    #20

                                    When I started debugging...
                                    A Warning is shown..
                                    It says..

                                    bq. The preferred debugger engine for debugging binaries of type 'x86-windows-msvc2008-pe-32bit' is not available.
                                    The debugger engine 'Gdb engine' will be used as a fallback.
                                    Details:There is no CDB binary available for binaries in format 'x86-windows-msvc2008-pe-32bit'

                                    What does that mean?

                                    :)

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                                      ZapB
                                      wrote on last edited by
                                      #21

                                      Which build are you trying to debug? Desktop/simulator/symbian? I would try getting it working on the desktop first.

                                      Nokia Certified Qt Specialist
                                      Interested in hearing about Qt related work

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                                        Dinesh Balu
                                        wrote on last edited by
                                        #22

                                        [quote author="ZapB" date="1306222858"]Which build are you trying to debug? Desktop/simulator/symbian? I would try getting it working on the desktop first.[/quote]

                                        That was Qt Simulator -> N900 simulator

                                        I tried that with desktop simulator,... It says Debugging starts..
                                        It does nothing...

                                        No window appears... no output...

                                        This is a Qt Mobile application...

                                        :)

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                                          ZapB
                                          wrote on last edited by
                                          #23

                                          Can you try building your app for the desktop target (not the desktop mobile simulator) and debugging that. You should have all the tools needed to debug that.

                                          Nokia Certified Qt Specialist
                                          Interested in hearing about Qt related work

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