Update W3DTerrainVisual initialization

Author: Chapter5780

Core/GameEngineDevice/Source/W3DDevice/GameClient/W3DTerrainVisual.cpp

@@ -611,8 +611,8 @@ Bool W3DTerrainVisual::load( AsciiString filename )
 																				 m_clientHeightMap,
 																				 it);
 #else
-	m_terrainRenderObject->initHeightData( m_logicHeightMap->getDrawWidth(),
-																				 m_logicHeightMap->getDrawHeight(),
+	m_terrainRenderObject->initHeightData( m_logicHeightMap->getXExtent(),
+																				 m_logicHeightMap->getYExtent(),
 																				 m_logicHeightMap,
 																				 it);
 #endif