Re: [osg-users] Invalid Operation after applying attribute Viewport

Hi Bruno, try apitrace .. cross-platform very handy for debugging https://github.com/apitrace/apitrace On Mon, Sep 12, 2016 at 6:02 PM, Bruno Oliveira < bruno.manata.olive...@gmail.com> wrote: > Hello, I am getting the following error in an OSG viewer, with a > osgViewer::GraphisWindowEmbedded

[osg-users] Invalid Operation after applying attribute Viewport

Hello, I am getting the following error in an OSG viewer, with a osgViewer::GraphisWindowEmbedded into a QOpenGLWidget: detected OpenGL error 'invalid operation' after applying attribute Viewport 0x7f93fbe97170 I get this error every time I call QOpenGLWidget::update(). This happens only