fix_sg.diff

commit eb3965c6d4ec916b897da4e4c5e6b80ba77bd5cf
Author: Konstantin Tokarev <annulen@yandex.ru>
Date:   Thu Jun 16 12:58:34 2016 +0300

    Restored compatibility with QSGRenderNode API from Qt < 5.8.
    
    Change-Id: If41869580556fbe9b79fa9c3b162cefb23c74d25

diff --git a/Source/WebKit2/UIProcess/qt/QtWebPageSGNode.cpp b/Source/WebKit2/UIProcess/qt/QtWebPageSGNode.cpp
index d6a694a..fea2ad4 100644
--- a/Source/WebKit2/UIProcess/qt/QtWebPageSGNode.cpp
+++ b/Source/WebKit2/UIProcess/qt/QtWebPageSGNode.cpp
@@ -24,11 +24,16 @@
 #include <QtGui/QPolygonF>
 #include <QtQuick/QQuickItem>
 #include <QtQuick/QQuickWindow>
-#include <QtQuick/QSGRenderNode>
 #include <QtQuick/QSGSimpleRectNode>
 #include <WebCore/CoordinatedGraphicsScene.h>
 #include <WebCore/TransformationMatrix.h>
 
+#if QT_VERSION >= QT_VERSION_CHECK(5, 8, 0)
+#include <QtQuick/QSGRenderNode>
+#else
+#include <QtQuick/private/qsgrendernode_p.h>
+#endif
+
 using namespace WebCore;
 
 namespace WebKit {
@@ -41,12 +46,33 @@ public:
         coordinatedGraphicsScene()->setActive(true);
     }
 
+#if QT_VERSION >= QT_VERSION_CHECK(5, 8, 0)
+
     StateFlags changedStates() const Q_DECL_OVERRIDE
     {
         return StateFlags(StencilState) | ColorState | BlendState;
     }
 
-    void render(const RenderState *state) Q_DECL_OVERRIDE
+    void render(const RenderState* state) Q_DECL_OVERRIDE
+    {
+        renderInternal(state->projectionMatrix());
+    }
+
+#else
+
+    StateFlags changedStates() Q_DECL_OVERRIDE
+    {
+        return StateFlags(StencilState) | ColorState | BlendState;
+    }
+
+    void render(const RenderState& state) Q_DECL_OVERRIDE
+    {
+        renderInternal(state.projectionMatrix);
+    }
+
+#endif // QT_VERSION >= QT_VERSION_CHECK(5, 8, 0)
+
+    void renderInternal(const QMatrix4x4* projection)
     {
         TransformationMatrix renderMatrix;
         if (pageNode()->devicePixelRatio() != 1.0) {
@@ -58,14 +84,16 @@ public:
 
         // When rendering to an intermediate surface, Qt will
         // mirror the projection matrix to fit on the destination coordinate system.
-        const QMatrix4x4* projection = state->projectionMatrix();
         bool mirrored = projection && (*projection)(0, 0) * (*projection)(1, 1) - (*projection)(0, 1) * (*projection)(1, 0) > 0;
 
         // FIXME: Support non-rectangular clippings.
         coordinatedGraphicsScene()->paintToCurrentGLContext(renderMatrix, inheritedOpacity(), clipRect(), mirrored ? TextureMapper::PaintingMirrored : 0);
     }
 
-    void releaseResources() Q_DECL_OVERRIDE
+    void releaseResources()
+#if QT_VERSION >= QT_VERSION_CHECK(5, 8, 0)
+        Q_DECL_OVERRIDE
+#endif
     {
         coordinatedGraphicsScene()->purgeGLResources();
     }