Light Group AOVs 灯光组多通道

Introduction

引言

For even more control in post you can make use of Light Group AOVs. The light group functionality allows you to output per-light AOVs for most of Redshift's Integrated beauty AOVs. With separate passes for each light you can do things like increase or decrease the exposure of individual lights and change their color temperatures without having to re-render. Light groups can contain a single light or multiple lights for added flexibility and organization, allowing you to group together lights that fill similar roles.

为了更多的控制后，你可以使用光组的 aov。光组功能允许您输出每光的 aov 为大多数红移的综合美的 aov。通过单独的通行证为每个光你可以做的事情，如增加或减少单独的灯光曝光和改变他们的颜色温度而不必重新渲染。灯光组可以包含一盏灯或多盏灯，以增加灵活性和组织性，允许您将相似角色的灯光组合在一起。

Before you can start outputting light group AOVs first you have to create light groups and assign your lights to them. For more information please see here.

在你开始输出光组 aov 之前，你必须先创建光组，并将你的灯光分配给它们。欲了解更多信息，请点击这里。

Compatible Light Group AOVs

兼容光组 AOVs

• Beauty 美丽
• Diffuse Lighting 漫射照明
• Reflection 反思
• Specular Lighting 镜面照明
• Refraction 折射
• GI 胃肠道
• SSS
• Emission 排放

Incompatible Light Group AOVs

不兼容光组 AOVs

• All RAW AOVs 所有 RAW 视频
• Utility AOVs 公用事业公司的 aov
• Caustics 焦散
• Custom 习俗
• Puzzle Mattes 拼图 Mattes
• Shadows 阴影

Creating Light Groups

创建灯光组

Setting Up Light Group AOVs

建立轻型集团的 aov

Light Group AOV Options

轻组 AOV 选项

 

Global AOV

环球视野

Select the Global AOV mode for Light Group AOVs. In most cases the Remainder mode is preferable.

选择全局 AOV 模式为轻组 AOVs。在大多数情况下，剩余模式是可取的。

• All - This mode outputs an AOV with the combined result of all the Light Groups in the scene, just like a normal version of the AOV without any Light Group separation. 所有-这个模式输出一个 AOV 与场景中的所有光组的结合结果，就像没有任何光组分离的 AOV 的正常版本
• Remainder - This mode outputs an AOV with any remaining information not covered by the light groups selected.from the Light Group list. This AOV contains light groups and lights that are not selected as well as any point-based effects that are incompatible with light groups. This remainder AOV will be output with the suffix "other."

All Light Groups

所有光组

When toggled on this lets you quickly output a Light Group AOV for every Light Group in your scene without having to manually specify each one in the Light Group List.

当打开这个选项时，你可以快速输出场景中每个光组的光组 AOV，而不必手动在光组列表中指定每个光组。

Light Group List

灯组名单

This is where you select or list the light groups that you want to output for this AOV.

这是您选择或列出光组，您想输出的这个 AOV。

Light Groups in Detail

细节中的光组

Example scene

例子场景

There are 4 total lights set up in the following Light Groups:

下列灯组共设有四盏灯:

• Light Group: key_light 组: key Light
  • A single key area light with volume contribution. 一个单一的关键区域光与体积贡献
• Light Group: disc_spot_lights 光源组: 圆盘聚光灯
  • A disc shaped area light with volume contribution. 具有体积贡献的圆盘形区域光
  • A caustic casting spot light with 一种苛性铸造的聚光灯no 没有 volume contribution. 体积贡献
• Light Group: dome_light 灯组: 穹顶灯
  • One Redshift dome light with volume contribution. 一个红移圆顶光与体积贡献

Below are the resulting Light Group AOVs for their respective shading elements using both ray-traced effects and point-based effects for comparison when applicable. For the ray-traced examples everything is rendered with ray-traced effects (brute force GI, ray-traced SSS) with the exception of photon caustics. For the point-based examples the GI is rendered with Iraddiance Cache and Irradiance Point Cloud and the SSS is point-based and still contains the photon caustics.

下面是由此产生的光组各自的 AOVs 阴影元素使用两个光线追踪效果和点为基础的效果进行比较，如果适用。对于射线追踪的例子，除了光子焦散外，所有的东西都用射线追踪效果(蛮力 GI，射线追踪 SSS)来渲染。对于基于点的例子，用 Iraddiance Cache 和 Irradiance Point Cloud 渲染 GI，而 SSS 是基于点的，仍然包含光子焦散线。

Beauty

美丽

Note that in the point-based example all non-ray-traced effects show up exclusively in the Other or All AOVs. So you have no way of separating the global illumination, sub-surface scattering and caustic contribution on a per-light basis, instead they are all lumped together.

请注意，在基于点的示例中，所有非射线跟踪效果只显示在“他者”或“所有 aov”中。因此，你没有办法将全局光源、亚表面散射和腐蚀性贡献按光分开，而是将它们集中在一起。

For the ray-traced example only the photon caustics show up in the "other" AOV here even though they are being cast by the spot light. Since caustics are not ray-traced they cannot be output with their appropriate light group and thus end up in the Other or All passes.

对于射线追踪的例子，只有光子焦散现象出现在这里的“其他”AOV 中，即使它们是由聚光灯投射的。因为焦散线不是光线追踪的，所以它们不能用适当的光组输出，因此最终在大它者或全部通道中。

Diffuse Lighting

漫射照明

Global Illumination

全局光源

Reflection

反思

Note that in this case the light seen in the Other AOV is the photon caustics seen in the reflections. 注意，在这种情况下，在其他 AOV 中看到的光是在反射中看到的光子焦散线

Specular Lighting

镜面照明

Refraction

折射

Note that in this case  the light seen in the Other AOV are the photon caustics seen through the refractions. 请注意，在这种情况下，在其他 AOV 中看到的光是通过折射看到的光子焦散

Sub Surface Scattering

亚表面散射

Volume Lighting

音量照明

Emission

排放

Note that if a light is visible in your scene it is output in the Emission AOVs as demonstrated above.

注意，如果一个光在你的场景中是可见的，那么它就会像上面演示的那样在发射 aov 中输出。

Light Groups in Practice

实务中的轻小组

Compositing Light Group AOVs

合成光组 AOVs

Light Group AOVs can be composited easily just like any other non-raw AOV, by adding the result together in your preferred compositing package. For some examples on AOV compositing please see here.

轻组 AOV 可以很容易地合成就像任何其他非原始的 AOV，通过添加结果一起在您的首选合成包。有关 AOV 合成的一些例子，请看这里。