3 files changed, 36 insertions, 1 deletions
diff --git a/src/quick/scenegraph/qsgadaptationlayer_p.h b/src/quick/scenegraph/qsgadaptationlayer_p.h
index 1253711a94..fde3fa06b2 100644
--- a/src/quick/scenegraph/qsgadaptationlayer_p.h
+++ b/src/quick/scenegraph/qsgadaptationlayer_p.h
@@ -195,6 +195,8 @@ public:
     virtual void setFormat(GLenum format) = 0;
     virtual void setHasMipmaps(bool mipmap) = 0;
     virtual void setDevicePixelRatio(qreal ratio) = 0;
+    virtual void setMirrorHorizontal(bool mirror) = 0;
+    virtual void setMirrorVertical(bool mirror) = 0;
     Q_SLOT virtual void markDirtyTexture() = 0;
     Q_SLOT virtual void invalidated() = 0;
 
diff --git a/src/quick/scenegraph/qsgdefaultlayer.cpp b/src/quick/scenegraph/qsgdefaultlayer.cpp
index cca0712ece..fa69f911dd 100644
--- a/src/quick/scenegraph/qsgdefaultlayer.cpp
+++ b/src/quick/scenegraph/qsgdefaultlayer.cpp
@@ -97,6 +97,8 @@ QSGDefaultLayer::QSGDefaultLayer(QSGRenderContext *context)
     , m_multisamplingChecked(false)
     , m_multisampling(false)
     , m_grab(false)
+    , m_mirrorHorizontal(false)
+    , m_mirrorVertical(true)
 {
 }
 
@@ -259,6 +261,16 @@ void QSGDefaultLayer::setRecursive(bool recursive)
     m_recursive = recursive;
 }
 
+void QSGDefaultLayer::setMirrorHorizontal(bool mirror)
+{
+    m_mirrorHorizontal = mirror;
+}
+
+void QSGDefaultLayer::setMirrorVertical(bool mirror)
+{
+    m_mirrorVertical = mirror;
+}
+
 void QSGDefaultLayer::markDirtyTexture()
 {
     m_dirtyTexture = true;
@@ -365,7 +377,10 @@ void QSGDefaultLayer::grab()
 
     m_renderer->setDeviceRect(m_size);
     m_renderer->setViewportRect(m_size);
-    QRectF mirrored(m_rect.left(), m_rect.bottom(), m_rect.width(), -m_rect.height());
+    QRectF mirrored(m_mirrorHorizontal ? m_rect.right() : m_rect.left(),
+                    m_mirrorVertical ? m_rect.bottom() : m_rect.top(),
+                    m_mirrorHorizontal ? -m_rect.width() : m_rect.width(),
+                    m_mirrorVertical ? -m_rect.height() : m_rect.height());
     m_renderer->setProjectionMatrixToRect(mirrored);
     m_renderer->setClearColor(Qt::transparent);
 
@@ -428,3 +443,11 @@ QImage QSGDefaultLayer::toImage() const
 
     return QImage();
 }
+
+QRectF QSGDefaultLayer::normalizedTextureSubRect() const
+{
+    return QRectF(m_mirrorHorizontal ? 1 : 0,
+                  m_mirrorVertical ? 0 : 1,
+                  m_mirrorHorizontal ? -1 : 1,
+                  m_mirrorVertical ? 1 : -1);
+}
diff --git a/src/quick/scenegraph/qsgdefaultlayer_p.h b/src/quick/scenegraph/qsgdefaultlayer_p.h
index 0ba7109ef6..7baaed5f67 100644
--- a/src/quick/scenegraph/qsgdefaultlayer_p.h
+++ b/src/quick/scenegraph/qsgdefaultlayer_p.h
@@ -78,10 +78,18 @@ public:
 
     void setDevicePixelRatio(qreal ratio) Q_DECL_OVERRIDE { m_device_pixel_ratio = ratio; }
 
+    bool mirrorHorizontal() const { return bool(m_mirrorHorizontal); }
+    void setMirrorHorizontal(bool mirror) Q_DECL_OVERRIDE;
+
+    bool mirrorVertical() const { return bool(m_mirrorVertical); }
+    void setMirrorVertical(bool mirror) Q_DECL_OVERRIDE;
+
     void scheduleUpdate() Q_DECL_OVERRIDE;
 
     QImage toImage() const Q_DECL_OVERRIDE;
 
+    QRectF normalizedTextureSubRect() const Q_DECL_OVERRIDE;
+
 public Q_SLOTS:
     void markDirtyTexture() Q_DECL_OVERRIDE;
     void invalidated() Q_DECL_OVERRIDE;
@@ -115,6 +123,8 @@ private:
     uint m_multisamplingChecked : 1;
     uint m_multisampling : 1;
     uint m_grab : 1;
+    uint m_mirrorHorizontal : 1;
+    uint m_mirrorVertical : 1;
 };
 
 #endif // QSGDEFAULTLAYER_P_H