Ok, now I am having a new problem.
I am now transitioning to QT 5.5 and Visual Studio 2015 Update 1 from QT 5.4
and VS 2010 ( using OSG 3.4.0)
I rebuilt OSG for Visual Studio 2015 Update 1
I built QT5.5 for Visual Studio 2015 Update 1
The OSG examples all work fine, except OSGViewerQT
When osgViewerQT starts up
> osg130-osgd.dll!osg::State::initializeExtensionProcs() Line 959 C++
osg130-osgd.dll!osg::GraphicsContext::makeCurrent() Line 620 C++
osg130-osgQtd.dll!osgQt::GraphicsWindowQt::realizeImplementation() Line
777 C++
osg130-osgd.dll!osg::GraphicsContext::realize() Line 511 C++
osg130-osgViewerd.dll!osgViewer::CompositeViewer::realize() Line 612
C++
osg130-osgViewerd.dll!osgViewer::ViewerBase::frame(double
simulationTime) Line 681 C++
osgviewerQtd.exe!ViewerWidget::paintEvent(QPaintEvent * event) Line 85
C++
const char* vendor = (const char*) glGetString( GL_VENDOR );
returns NULL, so of course nothing will work from now on.
Digging through the code, I found that in QGLContext::makeCurrent
> Qt5OpenGLd.dll!QGLContext::makeCurrent() Line 3578 C++
Qt5OpenGLd.dll!QGLWidget::makeCurrent() Line 4071 C++
osg130-osgQtd.dll!osgQt::GraphicsWindowQt::makeCurrentImplementation()
Line 840 C++
osg130-osgd.dll!osg::GraphicsContext::makeCurrent() Line 611 C++
osg130-osgQtd.dll!osgQt::GraphicsWindowQt::realizeImplementation() Line
777 C++
osg130-osgd.dll!osg::GraphicsContext::realize() Line 511 C++
const char *renderer = reinterpret_cast<const char
*>(d->guiGlContext->functions()->glGetString(GL_RENDERER));
returns a valid string...
Any ideas on this one? It looks like we do not have a valid GL context when OSG
needs it.
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Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=65981#65981
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