Unreal Engine 4.9 发布，此版本包括几百个 Unreal Engine 4 更新，129 个改进提交。 此版本主要改进了对移动设备的支持，尝试性支持 DirectX 12。 主要改进： Enhanced Support for Mobile Devices New: Dynamic Character Shadows for Mobile New: Dynamic Point Lights for Mobile New: Decals on Mobile New: Major VR Updates New: VR Motion Controller Support New: Experimental DirectX 12 Support New: Full Scene Particle Collision with Mesh Distance Fields New: Hierarchical LOD Fast Preview and Clustering New: "Arch Vis" Character Controls New: Widget Depth Ordering New: Area Shadows (for stationary lights) New: Ambient Occlusion Material Mask New: Mesh Distance Field Materials New: Improved Distance Field Ambient Occlusion New: Content Browser Advanced Search 更多改进内容请看发行说明。 Unreal Engine 4.9 发布，改进移动设备支持下载地址
