Screen flickering: OpenGL glReadPixels call randomly causes SwapBuffers

Discussion in 'Windows Virtual Machine' started by JanneH, Nov 18, 2009.

  1. JanneH

    JanneH Bit poster

    Messages:
    1
    We are doing OpenGL development on Parallels Desktop 5 with Windows 7 installed. When our application makes glReadPixels OpenGL API call, it causes ocassinally OpenGL to swap back buffer to front buffer. This is against OpenGL specification and causes screen flashing and flickering in OpenGL applications.


    Formerly we were doing same developement on Parallels Desktop 4 which did not have any issues. glReadPixels behaved correctly in previous versions of Parallels Desktop. Please correct this issue as soon as possible!

    Has anybody else faced this issue or screen flickering issue in OpenGL applications while running Windows 7 on Parallels Desktop 5?
     
  2. serv

    serv Forum Maven

    Messages:
    817
    Janne,

    would be nice if you provided us some test program to demostrate the effect.
     

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