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  1. Qt for Python
  2. PYSIDE-989

PySide2 : QOpenGLFunction

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      The attached sample code tries to achieve Scene Graph - OpenGL under QML (https://doc.qt.io/qt-5/qtquick-scenegraph-openglunderqml-example.html) in Python and QML. However, the implementation fails due to QOpneGLFunction's misbehavior.  The problem seems to arise from QAbstractOpenGLFunctions class implementation. 

      For example, the following code fails

       

      class TestRender(QObject,QOpenGLFunctions):
    def __init__( self ):
        super().__init__()
        self.profile = QOpenGLVersionProfile()
        self.gl = None
        self.viewportSize = QSize()
        self.t = 0.0
        self.program = None
        self.window = None
        self.initialize()

    def setT( self, t ):
        self.t = t

    ....

    def initialize( self ):
        if self.program == None:
            initializeOpenGLFunctions()   #ERROR: The application hangs.

      also 

          def paint( self ):
        if self.program == None:
            self.initialize()

        ... 
        glDisable(GL_DEPTH_TEST)       #ERROR: The application hangs.

       

        1. pyside989.png
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        2. pyside989.zip
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        3. PySide-989-Sample.zip
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            kleint Friedemann Kleint
            nagrohn Nahomi Gröhn (Inactive)
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              Created:
              Updated:
              Resolved:

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