Instances 实例

Introduction

引言

Instances are lightweight copies of an object that do not contain any geometry data, but rather maintain a link to the original object. Because each instance only stores a limited amount of data – such as a transform matrix and sometimes material assignment information – they have several advantages over regular copies:

实例是对象的轻量级副本，不包含任何几何数据，而是维护到原始对象的链接。由于每个实例只存储有限数量的数据 -- 例如转换矩阵，有时还存储材料分配信息 -- 它们比常规副本有几个优点:

• Instances use much less disk space for scene files. 实例对场景文件使用的磁盘空间要少得多
• Edits to the original are automatically applied to all of its instances, making editing many identical objects much simpler. 对原始文件的编辑会自动应用到它的所有实例中，这使得编辑许多相同的对象变得更加简单
• Instances use very little memory when rendering using Redshift and can significantly improve performance. 使用红移渲染时，实例使用的内存很少，可以显著提高性能

A scene with 1300 instances of a high resolution Buddha model (approximately 880,000 triangles per instance). Over a billion instanced triangles.

一个有1300个高分辨率佛像模型实例的场景(每个实例大约880,000个三角形)。超过10亿个实例三角形。

Limitations

局限性

Redshift does not currently support instancing of lights or volume containers. If such objects are instanced in your scene, only the first instance will contribute to the rendering with Redshift.

红移目前不支持光源或卷容器的实例化。如果这样的物体在你的场景中被实例化，只有第一个实例将有助于红移渲染。

How To Use

如何使用