Accelerating lineseries with OpenGL

Added support for QAbstractSeries::useOpenGL property.
When true, the series in question is drawn on a separate
offscreen buffer using OpenGL and then superimposed on
the chart. Currently this property is only supported
for line and scatter series.

Change-Id: I174fec541f9f3c23464270c1fe08f824af16a0fb
Reviewed-by: Titta Heikkala <titta.heikkala@theqtcompany.com>
Reviewed-by: Tomi Korpipää <tomi.korpipaa@theqtcompany.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/examples/charts/audio/xyseriesiodevice.cpp b/examples/charts/audio/xyseriesiodevice.cpp
index ef9789cd..4b7d2f52 100644
--- a/examples/charts/audio/xyseriesiodevice.cpp
+++ b/examples/charts/audio/xyseriesiodevice.cpp
@@ -35,12 +35,12 @@ qint64 XYSeriesIODevice::readData(char * data, qint64 maxSize)
 qint64 XYSeriesIODevice::writeData(const char * data, qint64 maxSize)
 {
     qint64 range = 2000;
-    QList<QPointF> oldPoints = m_series->points();
-    QList<QPointF> points;
+    QVector<QPointF> oldPoints = m_series->pointsVector();
+    QVector<QPointF> points;
     int resolution = 4;
 
     if (oldPoints.count() < range) {
-        points = m_series->points();
+        points = m_series->pointsVector();
     } else {
         for (int i = maxSize/resolution; i < oldPoints.count(); i++)
             points.append(QPointF(i - maxSize/resolution, oldPoints.at(i).y()));