Added a new render job stage: NoStage

NoStage allows scheduling jobs for immediate execution on the
renderer thread.

[ChangeLog][QtQuick][QQuickWindow] Added a render job stage: NoStage

Task-number: QTBUG-44953
Change-Id: I918c79f1d095bc27d911a88d81376d146a04313c
Reviewed-by: Gunnar Sletta <gunnar@sletta.org>
Reviewed-by: Venugopal Shivashankar <venugopal.shivashankar@digia.com>
Reviewed-by: Pasi Keränen <pasi.keranen@digia.com>

1 files changed, 16 insertions, 0 deletions

diff --git a/src/quick/scenegraph/qsgrenderloop.cpp b/src/quick/scenegraph/qsgrenderloop.cpp
index ce3bf7d61d..fd6dc76dc3 100644
--- a/src/quick/scenegraph/qsgrenderloop.cpp
+++ b/src/quick/scenegraph/qsgrenderloop.cpp
@@ -99,6 +99,22 @@ void QSGRenderLoop::cleanup()
     s_instance = 0;
 }
 
+/*!
+ * Non-threaded render loops immediately run the job if there is a context.
+ */
+void QSGRenderLoop::postJob(QQuickWindow *window, QRunnable *job)
+{
+    Q_ASSERT(window);
+    Q_ASSERT(job);
+
+    if (window->openglContext()) {
+        window->openglContext()->makeCurrent(window);
+        job->run();
+    }
+
+    delete job;
+}
+
 class QSGGuiThreadRenderLoop : public QSGRenderLoop
 {
     Q_OBJECT