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Forum Update on Monday, May 27th 2025

OpenGL Multithread

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  • U Offline
    U Offline
    umerlaton
    wrote on 26 Mar 2012, 00:35 last edited by
    #1

    Hi everyone,
    i am using opengl to render video frames from opencv.For example, I want to displays several webcams in several opengl widgets .This works fine when having only one instance of a QGLWidget rendering one camera but when running several instances of this widget it seems that they are all sharing the same texture and i get flickering image with the cameras image superposed.I also try this with video file(USING DIRECTSHOW->OPENCV for image proccesing->QGLWIDGET to render).
    I believe it has to be something with multithread opengl but I still cant figure it out. I would appreciate if anyone can help me with this.

    Thanks

    [Edit: Removed the all upper-case SHOUTING! from the title to make it less Exciting! -mlong]

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    • U Offline
      U Offline
      umerlaton
      wrote on 30 Mar 2012, 14:40 last edited by
      #2

      :D SOLVED. my mistake was that i wasnt setting my opengl context properly ,I used wglMakecurrent or this-->makecurrent() function

      If anyone got any question about this,Ill be glad to help :)

      Umer.

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      • K Offline
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        koahnig
        wrote on 30 Mar 2012, 14:57 last edited by
        #3

        Thanks for sharing your solution.

        Please mark your post in the title line with [Solved]. Others may find easier this it as something solved.

        Vote the answer(s) that helped you to solve your issue(s)

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        26 Mar 2012, 00:35

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