反射平面

这一类型的探头物体适用于平整的平面。基本来说它们就是用翻转的相机捕捉整个场景。

使用平面反射传给渲染带来负担,因为视图中有多少反射平面,就要渲染多少次场景。

除非启用屏幕空间反射,反射平面仅作用于粗糙度接近0的高光表面。

如果启用屏幕空间反射,反射平面将充当缓冲。这将加速追踪过程,并从视图空间补全丢失数据。这也使得中等粗糙度与法线受干扰(比如法线贴图)的表面的反射更加准确。

Note

平面反射内部不支持次表面散射、屏幕空间反射和体积度量。

放置

If Backface Culling is not enabled, snapping the Reflection Plane to the planar surface will effectively capture the underside of the surface.

You can manually move the Reflection Plane above the surface enough for it to not appear in the capture. Alternatively you can put a floor object inside a collection and use this collection as a Visibility Collection (inverted) inside the Reflection Plane's probe settings.

参考

面板:物体数据 ‣ 探头
距离

A probe object only influences the lighting of nearby surfaces. This influence zone is defined by the Distance parameter and object scaling. The influence distance varies is a bit, depending on the probe type.

对于反射平面而言,影响距离就是其与平面的距离。只有与反射平面法向一致的表面才能接收到捕捉的反射。

衰减
影响距离的百分比,探头的影响沿其线性衰减。同时也定义了着色法向须与接收反射的平面的一致程度。
裁减偏移
定义当捕捉屏幕时平面须与裁切的靠近程度。调高该值可以解决反射接触问题。
可见性集合

In some cases, it is useful to limit which objects appear in the light probe's captured lighting. For instance, an object that is too close to a capture point might be better excluded. This is what the visibility collection does. Only objects that are in this collection will be visible when this probe will capture the scene.

另有一个选项可以反转该行为, 并有效地隐藏此集合中的物体。

Note

This is only a filtering option. That means that if an object is not visible at render time it won't be visible during the probe render.

视图显示

参考

面板:物体数据 ‣ 视图显示
箭头大小
指示反射平面法向的箭头大小
显示数据
在3D视图中,全反射平面显示捕捉到的反射图像。