Question

以下简单代码仅输出None两次，原因可能是什么？我可以看到黑色窗口，但由于无法访问GL功能，因此无法绘制任何内容。

from PyQt5.QtGui import QOpenGLWindow
from PyQt5.QtWidgets import QApplication
import sys


class MainWindow(QOpenGLWindow):
    def paintGL(self):
        print self.context().versionFunctions()

if __name__ == '__main__':
    app = QApplication(sys.argv)
    window = MainWindow()
    window.show()
    sys.exit(app.exec_())

Answer 1

我在这里找到了一个很好的例子：https://github.com/pbouda/stuff/blob/master/opengl/pyqt/chocolux.py

问题在于错误的GL配置文件：尽管我的视频卡有4.4，但PyQt仅支持2.0和2.1。这是可悲的，说实话......

1.0 failed: No module named _QOpenGLFunctions_1_0
1.1 failed: No module named _QOpenGLFunctions_1_1
1.2 failed: No module named _QOpenGLFunctions_1_2
1.3 failed: No module named _QOpenGLFunctions_1_3
1.4 failed: No module named _QOpenGLFunctions_1_4
1.5 failed: No module named _QOpenGLFunctions_1_5
2.0 is ok
2.1 is ok
3.0 failed: No module named _QOpenGLFunctions_3_0
3.1 failed: No module named _QOpenGLFunctions_3_1

我用以下代码得到了这个：

def paintGL(self):
        for i in xrange(0, 5):
            for j in xrange(0, 1000):
                version = QtGui.QOpenGLVersionProfile()
                version.setVersion(i, j)
                try:
                    if self.context().versionFunctions(version) is not None: print '{}.{} is ok'.format(i, j)
                except Exception as e:
                    print '{}.{} failed: {}'.format(i, j, e)

Pyqt 5.4.1 - 如何使用QOpenGLWindow？

1 个答案: