The Advanced 3D rendering plug-in is used to render compositions containing intersecting 3D layers. To render shadows, the plug-in uses shadow maps, which are images rendered from the point of view of each light source. Normally, a shadow’s resolution is computed automatically based on the composition resolution and the layers’ quality settings. If normal resolution doesn’t create the quality you want, or renders too slowly, you can adjust the shadow map resolution. For example, if shadows are blurry and the Shadow Diffusion material option is set to 0, increase the shadow map resolution. Or, if shadows render too slowly, decrease the shadow map resolution.

When a shadow-casting layer intersects another layer, sometimes there is a small gap behind the intersection that is supposed to be shadowed. To decrease the size of the gap, increase the shadow map resolution.