Merge remote-tracking branch 'origin/5.3' into 5.4

Change-Id: I2e06c2fcd8aa9d5d090f0568be75272ec82f7b20

2 files changed, 13 insertions, 4 deletions

diff --git a/src/qml/jit/qv4assembler_p.h b/src/qml/jit/qv4assembler_p.h
index 32f709c5d2..5e868c3b11 100644
--- a/src/qml/jit/qv4assembler_p.h
+++ b/src/qml/jit/qv4assembler_p.h
@@ -225,11 +225,10 @@ public:
             return frameSize;
         }
 
+        /// \return the stack frame size in number of Value items.
         int calculateJSStackFrameSize() const
         {
-            const int locals = (localCount + sizeof(QV4::CallData)/sizeof(QV4::Value) - 1 + maxOutgoingArgumentCount) + 1;
-            int frameSize = locals * sizeof(QV4::Value);
-            return frameSize;
+            return (localCount + sizeof(QV4::CallData)/sizeof(QV4::Value) - 1 + maxOutgoingArgumentCount) + 1;
         }
 
         Address stackSlotPointer(int idx) const
diff --git a/src/quick/items/context2d/qquickcontext2d.cpp b/src/quick/items/context2d/qquickcontext2d.cpp
index 1a0d6287aa..a3644c313b 100644
--- a/src/quick/items/context2d/qquickcontext2d.cpp
+++ b/src/quick/items/context2d/qquickcontext2d.cpp
@@ -70,6 +70,9 @@
 #include <private/qv4objectproto_p.h>
 #include <private/qv4scopedvalue_p.h>
 
+#include <private/qguiapplication_p.h>
+#include <qpa/qplatformintegration.h>
+
 #include <QtCore/QRunnable>
 
 #if defined(Q_OS_QNX) || defined(Q_OS_ANDROID)
@@ -2119,7 +2122,7 @@ QV4::ReturnedValue QQuickJSContext2DPrototype::method_fillRect(QV4::CallContext
 }
 
 /*!
-  \qmlmethod object QtQuick::Context2D::fillRect(real x, real y, real w, real h)
+  \qmlmethod object QtQuick::Context2D::strokeRect(real x, real y, real w, real h)
    Stroke the specified rectangle's path using the strokeStyle, lineWidth, lineJoin,
    and (if appropriate) miterLimit attributes.
 
@@ -4109,6 +4112,13 @@ void QQuickContext2D::init(QQuickCanvasItem *canvasItem, const QVariantMap &args
     }
 #endif
 
+    // Disable threaded background rendering if the platform has issues with it
+    if (m_renderTarget == QQuickCanvasItem::FramebufferObject
+            && m_renderStrategy == QQuickCanvasItem::Threaded
+            && !QGuiApplicationPrivate::platformIntegration()->hasCapability(QPlatformIntegration::ThreadedOpenGL)) {
+        m_renderTarget = QQuickCanvasItem::Image;
+    }
+
     switch (m_renderTarget) {
     case QQuickCanvasItem::Image:
         m_texture = new QQuickContext2DImageTexture;