1 files changed, 5 insertions, 4 deletions
diff --git a/src/plugins/platforms/wasm/qwasmbackingstore.cpp b/src/plugins/platforms/wasm/qwasmbackingstore.cpp
index a3c1ae8a502..c14d1f59e4e 100644
--- a/src/plugins/platforms/wasm/qwasmbackingstore.cpp
+++ b/src/plugins/platforms/wasm/qwasmbackingstore.cpp
@@ -39,11 +39,12 @@ QPaintDevice *QWasmBackingStore::paintDevice()
 void QWasmBackingStore::flush(QWindow *window, const QRegion &region, const QPoint &offset)
 {
     Q_UNUSED(window);
-    Q_UNUSED(region);
-    Q_UNUSED(offset);
-
     m_dirty |= region;
-    m_compositor->handleBackingStoreFlush(window);
+
+    QRect updateRect = region.boundingRect();
+    updateRect.translate(offset);
+
+    m_compositor->handleBackingStoreFlush(this->window(), updateRect);
 }
 
 void QWasmBackingStore::updateTexture(QWasmWindow *window)