- dirtyRect.topLeft.x = rect->GetX();
- dirtyRect.topLeft.y = rect->GetY();
- dirtyRect.extent.x = rect->GetWidth();
- dirtyRect.extent.y = rect->GetHeight();
+ dirtyRect.topLeft.x = rect->GetX() - 1;
+ dirtyRect.topLeft.y = rect->GetY() - 1;
+ dirtyRect.extent.x = rect->GetWidth() + 1;
+ dirtyRect.extent.y = rect->GetHeight() + 1;