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QPainter::end() and OpenGL States

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M2Senior

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Monday, October 31st 2011, 4:32am

QPainter::end() and OpenGL States

What does QPainter::end() explicitly do to the OpenGL state when called?

What are the OpenGL commands that are issued to the corresponding QGLWidget when QPainter::end() is called.

I am debugging a possible GL state corruption in my rendering pipeline affecting texture mapping.
Calling QPainter::end() prior to the affected drawing routine fixes the problem:

void MyQGLWidget::paintGL()
{
...

QPainter myPainter(this);
myPainter.end();

OnDrawOGLGeometry();

...
}

I'd like to know what QPainter::end() does explicitly to the OpenGL state.

Thanks.

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