3 files changed, 27 insertions, 2 deletions
diff --git a/src/plugins/platforms/cocoa/qcocoaglcontext.mm b/src/plugins/platforms/cocoa/qcocoaglcontext.mm
index 75ac348802..5ed81a7f1b 100644
--- a/src/plugins/platforms/cocoa/qcocoaglcontext.mm
+++ b/src/plugins/platforms/cocoa/qcocoaglcontext.mm
@@ -218,6 +218,9 @@ void QCocoaGLContext::windowWasHidden()
 
 void QCocoaGLContext::swapBuffers(QPlatformSurface *surface)
 {
+    if (surface->surface()->surfaceClass() == QSurface::Offscreen)
+        return; // Nothing to do
+
     QWindow *window = static_cast<QCocoaWindow *>(surface)->window();
     setActiveWindow(window);
 
@@ -229,11 +232,13 @@ bool QCocoaGLContext::makeCurrent(QPlatformSurface *surface)
     Q_ASSERT(surface->surface()->supportsOpenGL());
 
     QMacAutoReleasePool pool;
+    [m_context makeCurrentContext];
+
+    if (surface->surface()->surfaceClass() == QSurface::Offscreen)
+        return true;
 
     QWindow *window = static_cast<QCocoaWindow *>(surface)->window();
     setActiveWindow(window);
-
-    [m_context makeCurrentContext];
     update();
     return true;
 }
diff --git a/src/plugins/platforms/cocoa/qcocoaintegration.h b/src/plugins/platforms/cocoa/qcocoaintegration.h
index 8745b6a4e3..dc7c5916a3 100644
--- a/src/plugins/platforms/cocoa/qcocoaintegration.h
+++ b/src/plugins/platforms/cocoa/qcocoaintegration.h
@@ -77,6 +77,7 @@ public:
     bool hasCapability(QPlatformIntegration::Capability cap) const Q_DECL_OVERRIDE;
     QPlatformWindow *createPlatformWindow(QWindow *window) const Q_DECL_OVERRIDE;
     QPlatformWindow *createForeignWindow(QWindow *window, WId nativeHandle) const Q_DECL_OVERRIDE;
+    QPlatformOffscreenSurface *createPlatformOffscreenSurface(QOffscreenSurface *surface) const override;
 #ifndef QT_NO_OPENGL
     QPlatformOpenGLContext *createPlatformOpenGLContext(QOpenGLContext *context) const Q_DECL_OVERRIDE;
 #endif
diff --git a/src/plugins/platforms/cocoa/qcocoaintegration.mm b/src/plugins/platforms/cocoa/qcocoaintegration.mm
index 61eeeaf436..dd17848109 100644
--- a/src/plugins/platforms/cocoa/qcocoaintegration.mm
+++ b/src/plugins/platforms/cocoa/qcocoaintegration.mm
@@ -56,6 +56,7 @@
 #include <qpa/qplatforminputcontextfactory_p.h>
 #include <qpa/qplatformaccessibility.h>
 #include <qpa/qplatforminputcontextfactory_p.h>
+#include <qpa/qplatformoffscreensurface.h>
 #include <QtCore/qcoreapplication.h>
 
 #include <QtGui/private/qcoregraphics_p.h>
@@ -331,6 +332,24 @@ QPlatformWindow *QCocoaIntegration::createForeignWindow(QWindow *window, WId nat
     return new QCocoaWindow(window, nativeHandle);
 }
 
+class QCocoaOffscreenSurface : public QPlatformOffscreenSurface
+{
+public:
+    QCocoaOffscreenSurface(QOffscreenSurface *offscreenSurface) : QPlatformOffscreenSurface(offscreenSurface) {}
+
+    QSurfaceFormat format() const override
+    {
+        Q_ASSERT(offscreenSurface());
+        return offscreenSurface()->requestedFormat();
+    }
+    bool isValid() const override { return true; }
+};
+
+QPlatformOffscreenSurface *QCocoaIntegration::createPlatformOffscreenSurface(QOffscreenSurface *surface) const
+{
+    return new QCocoaOffscreenSurface(surface);
+}
+
 #ifndef QT_NO_OPENGL
 QPlatformOpenGLContext *QCocoaIntegration::createPlatformOpenGLContext(QOpenGLContext *context) const
 {