物体

可见性

参考

面板: 物体 ‣ 可见性

射线可见性

物体可以通过设定对特定的的射线不可见。例如，这可以用于使发射网格对于相机光线不可见。例如，可见性是继承的; 如果某些光线类型隐藏了父对象，则这些子对象也将被隐藏。

就性能而言，使用这些选项比使用达到相同效果的着色器节点设置更有效。对于特定光线不可见的对象将在光线发射的时候被跳过，从而导致较少的光线投射和着色器执行。

相机: 使物体在相机光线中可见。

漫射色采样: 使物体在漫射光线中可见。

光泽: 使物体在光泽光线中可见。

传递采样: 使物体在透射光线中可见。

体积散射: 使物体在透射光线中可见。

阴影: 使物体能够投射阴影。

剔除对象

In order to activate these options the respectively camera cull options have to be enabled in the scene simplify panel.

使用相机剔除: 忽略并以这种方式使对象对摄影机截面体外部的光线不可见。

使用距离剔除: 将剔除离相机超过特定距离的任何对象。当与相机剔除结合使用时，这可用于避免剔除位于相机视野之外但仍在反射中可见的附近对象。它对于剔除距离相机远的小对象也很有用。

动态模糊

参考

面板: 对象 ‣ 运动模糊

Each object has its own motion blur settings along with the Scene Level Motion Blur. These settings can be found in the Object Properties tab of the Properties.

步数(阶梯): 控制塑性运动模糊的准确性，更多步数可提供更多内存使用。实际时间步长数为 \(2^{steps -1}\)。

塑性: 为变形网格(例如动画角色，包括头发)启用运动模糊。

Warning

随着时间推移更改网格拓扑的对象修改器设置无法正确渲染塑性运动模糊。应禁用此类对象的塑性模糊。

着色

参考

面板: 属性s ‣ 物体属性 ‣ 着色方式

Shadow Terminator

Geometry Offset

Offset rays from the surface to reduce shadow terminator artifacts on low-poly geometry. Higher values affect more triangles, a value of one affecting all triangles and zero having no affect. The default value only affects triangles at grazing angles to light and should eliminate most artifacts.

Unlike the Shading Offset, this option has little affect on the lighting making it the preferable method to handle shadow terminator artifacts.

Shading Offset

将阴影终结（明暗交界线）推向亮面来隐藏下图所示低多边形的伪像。

../../../_images/render_cycles_object-settings_object-data_shading-terminator1.jpg — Shadow Terminator Artifacts.

../../../_images/render_cycles_object-settings_object-data_shading-terminator2.jpg — Result of using an offset of 0.15.

Note

This property artificially alters the scene's lighting and is not energy conserving and consequently not physically accurate (see Geometry Offset instead).

快速GI近似

AO Distance: Override for the world's AO Distance, if the value is zero the world's distance is used.

焦散

Mark objects as caustic casters or receivers. This is used in conjunction with a Light or World Shader with Shadow Caustics enabled to selectively speed up caustic rendering of objects in your scene.

Note

The rendering technique used to speed up the rendering of caustics is based on MNEE. There are a number of limitations with this technique and it's implementation in Cycles:

Only refractive caustics in the shadows of objects work. Caustics from reflections or caustics that fall outside shadows are not rendered with this technique.
MNEE Caustics are an approximation of caustics and will produce physically inaccurate results in many situations. Examples include incorrect brightnesses and the incorrect representation of caustics caused by rough or curved surfaces.
In complex materials with multiple refractive BSDFs, MNEE will only generate caustics for one of the BSDFs.
Filter Glossy settings are ignored when using MNEE for refractive caustics.
MNEE Caustic rays can pass through up to 6 Caustic Caster surfaces between a Caustic Reciever and a Shadow Caustic light before the ray is terminated and caustics are ignored.
The Ambient Occlusion and Bevel nodes will not produce a valid result on objects that are a Caustic caster or Caustic receiver while the scene contains a active Caustic caster, Caustic receiver, and Shadow Caustic Light.
MNEE Caustics only work if the caustic caster has smooth normals.
Volumetric materials are not considered when calculating MNEE caustics.
Bump and normal maps are ignored when calculating caustics.
The Metal GPU rendering backend is not supported.

Cast Shadow Caustics: Mark an object as a caustic caster.

Receive Shadow Caustics: Mark an object as a caustic receiver.

../../../_images/render_cycles_object-settings_caustics-example1.png — Rendering caustics inside an eye without MNEE at 32 samples per pixel.

../../../_images/render_cycles_object-settings_caustics-example2.png — Rendering caustics inside an eye using MNEE at 32 samples per pixel.

Light Group

Light Group

Select the Light Group to add the current Object or Light too.

Add Light Group: If the name input into the Light Group field does not align with an existing Light Group, then pressing this button will create a Light Group with that name and assign the selected Object or Light to it.