1 files changed, 9 insertions, 1 deletions
diff --git a/src/plugins/platforms/cocoa/qcocoaglcontext.mm b/src/plugins/platforms/cocoa/qcocoaglcontext.mm
index 7a12969972..628357eb39 100644
--- a/src/plugins/platforms/cocoa/qcocoaglcontext.mm
+++ b/src/plugins/platforms/cocoa/qcocoaglcontext.mm
@@ -312,8 +312,16 @@ void QCocoaGLContext::updateSurfaceFormat()
         m_format.setSamples(samples);
 
     int doubleBuffered = -1;
+    int tripleBuffered = -1;
     [pixelFormat getValues:&doubleBuffered forAttribute:NSOpenGLPFADoubleBuffer forVirtualScreen:0];
-    m_format.setSwapBehavior(doubleBuffered == 1 ? QSurfaceFormat::DoubleBuffer : QSurfaceFormat::SingleBuffer);
+    [pixelFormat getValues:&tripleBuffered forAttribute:NSOpenGLPFATripleBuffer forVirtualScreen:0];
+
+    if (tripleBuffered == 1)
+        m_format.setSwapBehavior(QSurfaceFormat::TripleBuffer);
+    else if (doubleBuffered == 1)
+        m_format.setSwapBehavior(QSurfaceFormat::DoubleBuffer);
+    else
+        m_format.setSwapBehavior(QSurfaceFormat::SingleBuffer);
 
     int steroBuffers = -1;
     [pixelFormat getValues:&steroBuffers forAttribute:NSOpenGLPFAStereo forVirtualScreen:0];