text: from ..Qt import QtCore, QtGui, QtOpenGL
  from OpenGL.GL import *
  app = QtGui.QApplication([])
  
  class GLTest(QtOpenGL.QGLWidget):
      def __init__(self):
          QtOpenGL.QGLWidget.__init__(self)
          self.makeCurrent()
          print("GL version:" + glGetString(GL_VERSION))
          print("MAX_TEXTURE_SIZE: %d" % glGetIntegerv(GL_MAX_TEXTURE_SIZE))
          print("MAX_3D_TEXTURE_SIZE: %d" % glGetIntegerv(GL_MAX_3D_TEXTURE_SIZE))
          print("Extensions: " + glGetString(GL_EXTENSIONS))
  
  GLTest()
  
  
  