Update gfxD3D11Device.cpp

Engine/source/gfx/D3D11/gfxD3D11Device.cpp

@@ -238,7 +238,7 @@ DXGI_SWAP_CHAIN_DESC GFXD3D11Device::setupPresentParams(const GFXVideoMode &mode
 
    if (mode.fullScreen)
    {
-      d3dpp.BufferDesc.Scaling = DXGI_MODE_SCALING_UNSPECIFIED;
+      d3dpp.BufferDesc.Scaling = DXGI_MODE_SCALING_CENTERED;
       d3dpp.BufferDesc.ScanlineOrdering = DXGI_MODE_SCANLINE_ORDER_UNSPECIFIED;
       d3dpp.Flags = DXGI_SWAP_CHAIN_FLAG_ALLOW_MODE_SWITCH;
    }
@@ -1865,4 +1865,4 @@ void GFXD3D11Device::setDebugMarker(ColorI color, const char *name)
       MultiByteToWideChar(CP_ACP, 0, name, -1, eventName, 260);
       mUserAnnotation->SetMarker(eventName);
    }
-}
+}