diff options
Diffstat (limited to 'src/opengl/qglpixelbuffer.cpp')
| -rw-r--r-- | src/opengl/qglpixelbuffer.cpp | 20 |
1 files changed, 14 insertions, 6 deletions
diff --git a/src/opengl/qglpixelbuffer.cpp b/src/opengl/qglpixelbuffer.cpp index 61bce23..ec6ac4c 100644 --- a/src/opengl/qglpixelbuffer.cpp +++ b/src/opengl/qglpixelbuffer.cpp @@ -76,6 +76,14 @@ \endlist + + \section Threading + + As of Qt 4.8, it's possible to render into a QGLPixelBuffer using + a QPainter in a separate thread. Note that OpenGL 2.0 or OpenGL ES + 2.0 is required for this to work. Also, under X11, it's necessary + to set the Qt::AA_X11InitThreads application attribute. + Pbuffers are provided by the OpenGL \c pbuffer extension; call hasOpenGLPbuffer() to find out if the system provides pbuffers. @@ -394,25 +402,25 @@ bool QGLPixelBuffer::isValid() const } #if !defined(QT_OPENGL_ES_1) -Q_GLOBAL_STATIC(QGL2PaintEngineEx, qt_buffer_2_engine) +Q_GLOBAL_STATIC(QGLEngineThreadStorage<QGL2PaintEngineEx>, qt_buffer_2_engine) #endif #ifndef QT_OPENGL_ES_2 -Q_GLOBAL_STATIC(QOpenGLPaintEngine, qt_buffer_engine) +Q_GLOBAL_STATIC(QGLEngineThreadStorage<QOpenGLPaintEngine>, qt_buffer_engine) #endif /*! \reimp */ QPaintEngine *QGLPixelBuffer::paintEngine() const { #if defined(QT_OPENGL_ES_1) - return qt_buffer_engine(); + return qt_buffer_engine()->engine(); #elif defined(QT_OPENGL_ES_2) - return qt_buffer_2_engine(); + return qt_buffer_2_engine()->engine(); #else if (qt_gl_preferGL2Engine()) - return qt_buffer_2_engine(); + return qt_buffer_2_engine()->engine(); else - return qt_buffer_engine(); + return qt_buffer_engine()->engine(); #endif } |