UE4直接设置FOV导致看不到部分物体解决

官方文档：https://docs.unrealengine.com/en-us/Engine/Rendering/VisibilityCulling

View Frustum

View Frustum culling uses the visible screen area of the camera’s field of view (FOV) to cull objects not within this space. The view frustum is a pyramidal shape that includes a near and far clipping plane which defines the closest and farthest any object should be visible within this space. All other objects are removed to save processing time.

 

UE4里FOV变化值比较大并且马上设置，可能直接设置FOV后导致看不到部分物体，原因：1、View Frustum（视锥体）检测物体 Bounds是否在视锥体里来是否剔除物体的，如果FOV变化值比较大并且马上设置，可能检测代码跳过当前帧没有重新刷新物体渲染状态，所以没有看到。2、引擎Visibility and Occlusion Culling功能优化剔除了该物体，可以增大物体 Bounds，但是性能消耗大。

解决：应该添加一个过渡动画值改变FOV或增大物体 Bounds