set default waveform renderer to RGB (non-GL) for macOS

1 files changed, 5 insertions, 2 deletions

diff --git a/src/waveform/waveformwidgetfactory.cpp b/src/waveform/waveformwidgetfactory.cpp
index 355f08ad60..6c26009b56 100644
--- a/src/waveform/waveformwidgetfactory.cpp
+++ b/src/waveform/waveformwidgetfactory.cpp
@@ -734,7 +734,9 @@ void WaveformWidgetFactory::swap() {
 }
 
 WaveformWidgetType::Type WaveformWidgetFactory::autoChooseWidgetType() const {
-    //default selection
+    // OpenGL waveform performance is bad on macOS with QGLWidget and Qt 5.
+    // TODO: remove this #ifndef when upgrading to QOpenGLWidget
+#ifndef __APPLE__
     if (m_openGlAvailable) {
         if (m_openGLShaderAvailable) {
             return WaveformWidgetType::GLSLRGBWaveform;
@@ -742,7 +744,8 @@ WaveformWidgetType::Type WaveformWidgetFactory::autoChooseWidgetType() const {
             return WaveformWidgetType::GLRGBWaveform;
         }
     }
-    return WaveformWidgetType::SoftwareWaveform;
+#endif
+    return WaveformWidgetType::RGBWaveform;
 }
 
 void WaveformWidgetFactory::evaluateWidgets() {