diff options
Diffstat (limited to 'src/gui')
| -rw-r--r-- | src/gui/kernel/qopenglcontext.cpp | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/src/gui/kernel/qopenglcontext.cpp b/src/gui/kernel/qopenglcontext.cpp index 3fccd6ba9a..90e9235353 100644 --- a/src/gui/kernel/qopenglcontext.cpp +++ b/src/gui/kernel/qopenglcontext.cpp @@ -590,10 +590,10 @@ QVariant QOpenGLContext::nativeHandle() const */ bool QOpenGLContext::create() { - if (isValid()) + Q_D(QOpenGLContext); + if (d->platformGLContext) destroy(); - Q_D(QOpenGLContext); d->platformGLContext = QGuiApplicationPrivate::platformIntegration()->createPlatformOpenGLContext(this); if (!d->platformGLContext) return false; @@ -676,6 +676,15 @@ QOpenGLContext::~QOpenGLContext() /*! Returns if this context is valid, i.e. has been successfully created. + On some platforms the return value of \c false for a context that was + successfully created previously indicates that the OpenGL context was lost. + + The typical way to handle context loss scenarios in applications is to + check via this function whenever makeCurrent() fails and returns \c false. + If this function then returns \c false, recreate the underlying native + OpenGL context by calling create(), call makeCurrent() again and then + reinitialize all OpenGL resources. + \sa create() */ bool QOpenGLContext::isValid() const |