[PyQt] glGetFloatv crashes application

[Jonatan Magnusson]

Den 2017-02-06 kl. 22:42, skrev Phil Thompson:

> I would describe the OpenGL support as very immature. Can you send me a short, complete example that demonstrates the problem?

Sure!


import sys
from PyQt5.QtWidgets import QWidget, QOpenGLWidget, QApplication, 
QHBoxLayout
from PyQt5.QtCore import QSize

class GLView(QOpenGLWidget):
     def minimumSizeHint(self):
         return QSize(50, 50)

     def sizeHint(self):
         return QSize(400, 400)

     def initializeGL(self):
         self.gl = self.context().versionFunctions()
         self.gl.initializeOpenGLFunctions()

     def paintGL(self):
         self.gl.glLoadIdentity()
         self.gl.glTranslatef(1, 2, 3)
         print("before")
         m = self.gl.glGetFloatv(self.gl.GL_MODELVIEW_MATRIX)
         print("after")
         print(str(m))

     def resizeGL(self, width, height):
         self.gl.glViewport(0, 0, width, height)

class TestWindow(QWidget):
     def __init__(self):
         super(TestWindow, self).__init__()
         layout = QHBoxLayout()
         layout.addWidget(GLView())
         self.setLayout(layout)

app = QApplication(sys.argv)
window = TestWindow()
window.show()
sys.exit(app.exec_())


Regards,
Jonatan