Now that pyside can successfully launch my window, my program
immediately crashes in the paint function getting a QPainter from my
QGLWidget-derived widget.
void PanelGL::paintGL()
{
QPainter painter;
painter.begin(this); // crash here
...
}
According to the stack trace below, calling begin() spawns a
glCreateShader call, which is crashing my machine. Now that I'm
starting my app from pyside, do I need to do anything differently in
my C++ code to handle certain OpenGL workflows?
#0 0x00007fffebdb311e in glCreateShader () from /usr/lib64/libGL.so
#1 0x00000037ba268262 in ?? () from /usr/lib64/libQtOpenGL.so.4
#2 0x00000037ba268a28 in
QGLShader::QGLShader(QFlags<QGLShader::ShaderTypeBit>, QGLContext
const*, QObject*) ()
from /usr/lib64/libQtOpenGL.so.4
#3 0x00000037ba27f199 in
QGLEngineSharedShaders::QGLEngineSharedShaders(QGLContext const*) ()
from /usr/lib64/libQtOpenGL.so.4
#4 0x00000037ba27fcd8 in
QGLEngineSharedShaders::shadersForContext(QGLContext const*) ()
from /usr/lib64/libQtOpenGL.so.4
#5 0x00000037ba27fdac in
QGLEngineShaderManager::QGLEngineShaderManager(QGLContext*) ()
from /usr/lib64/libQtOpenGL.so.4
#6 0x00000037ba282fb8 in QGL2PaintEngineEx::begin(QPaintDevice*) ()
from /usr/lib64/libQtOpenGL.so.4
#7 0x00000037b97152e0 in QPainter::begin(QPaintDevice*) () from
/usr/lib64/libQtGui.so.4
#8 0x00007fffef9c402d in PanelGL::paintGL (this=0x1006030) at panelgl.cpp:117
#9 0x00000037ba22da60 in QGLWidget::glDraw() () from
/usr/lib64/libQtOpenGL.so.4
#10 0x00000037ba22d3f9 in QGLWidget::paintEvent(QPaintEvent*) () from
/usr/lib64/libQtOpenGL.so.4
#11 0x00000037b9619fdc in QWidget::event(QEvent*) () from
/usr/lib64/libQtGui.so.4
#12 0x00000037ba22f988 in QGLWidget::event(QEvent*) () from
/usr/lib64/libQtOpenGL.so.4
#13 0x00000037b95c9994 in QApplicationPrivate::notify_helper(QObject*,
QEvent*) () from /usr/lib64/libQtGui.so.4
#14 0x00000037b95ce813 in QApplication::notify(QObject*, QEvent*) ()
from /usr/lib64/libQtGui.so.4
#15 0x00007ffff024b5b6 in ?? () from
/usr/lib64/python2.7/site-packages/PySide/QtGui.so
#16 0x00000037b8f7903c in QCoreApplication::notifyInternal(QObject*,
QEvent*) () from /usr/lib64/libQtCore.so.4
#17 0x00000037b9615c80 in QWidgetPrivate::drawWidget(QPaintDevice*,
QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*)
() from /usr/lib64/libQtGui.so.4
#18 0x00000037b97dc867 in QWidgetPrivate::repaint_sys(QRegion const&)
() from /usr/lib64/libQtGui.so.4
#19 0x00000037b960c3e4 in QWidgetPrivate::syncBackingStore() () from
/usr/lib64/libQtGui.so.4
#20 0x00000037b961a4fc in QWidget::event(QEvent*) () from
/usr/lib64/libQtGui.so.4
#21 0x00000037ba22f988 in QGLWidget::event(QEvent*) () from
/usr/lib64/libQtOpenGL.so.4
#22 0x00000037b95c9994 in QApplicationPrivate::notify_helper(QObject*,
QEvent*) () from /usr/lib64/libQtGui.so.4
#23 0x00000037b95ce813 in QApplication::notify(QObject*, QEvent*) ()
from /usr/lib64/libQtGui.so.4
#24 0x00007ffff024b5b6 in ?? () from
/usr/lib64/python2.7/site-packages/PySide/QtGui.so
#25 0x00000037b8f7903c in QCoreApplication::notifyInternal(QObject*,
QEvent*) () from /usr/lib64/libQtCore.so.4
#26 0x00000037b8f7caca in
QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*)
()
from /usr/lib64/libQtCore.so.4
#27 0x00000037b8fa7923 in ?? () from /usr/lib64/libQtCore.so.4
#28 0x0000003039444a7d in g_main_context_dispatch () from
/lib64/libglib-2.0.so.0
#29 0x0000003039445278 in ?? () from /lib64/libglib-2.0.so.0
#30 0x000000303944544c in g_main_context_iteration () from
/lib64/libglib-2.0.so.0
#31 0x00000037b8fa7d4f in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
()
from /usr/lib64/libQtCore.so.4
#32 0x00000037b966c61e in ?? () from /usr/lib64/libQtGui.so.4
#33 0x00000037b8f78172 in
QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /usr/lib64/libQtCore.so.4
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