X-Git-Url: http://git.code-monkey.de/?p=pulseview.git;a=blobdiff_plain;f=pv%2Fviews%2Ftrace%2Fanalogsignal.cpp;fp=pv%2Fviews%2Ftrace%2Fanalogsignal.cpp;h=3430ab3cf48eb6996ca0cd52901c1d9c884aa4cb;hp=60ba2ca9831b0cd94fc95ea85d93156d771ffe06;hb=8a07bc241694c10678968309bc8ee4e6076df3a3;hpb=f0b992572e7e06a1f62ede8f1bf8d9b0ad8896bc

diff --git a/pv/views/trace/analogsignal.cpp b/pv/views/trace/analogsignal.cpp
index 60ba2ca..3430ab3 100644
--- a/pv/views/trace/analogsignal.cpp
+++ b/pv/views/trace/analogsignal.cpp
@@ -444,7 +444,9 @@ void AnalogSignal::paint_trace(QPainter &p,
 	}
 	delete[] sample_block;
 
-	p.drawPolyline(points, points_count);
+	// QPainter::drawPolyline() is slow, let's paint the lines ourselves
+	for (int64_t i = 1; i < points_count; i++)
+		p.drawLine(points[i - 1], points[i]);
 
 	if (show_sampling_points) {
 		if (paint_thr_dots) {