全球照明

• Video Tutorial: Global Illumination.视频教程：全局照明。

The computation of indirect lighting is a very expensive task for the processing unit, so it is usually performed once at the development stage (lighting is baked) and the results are used later for static lighting at run time.间接照明的计算对于处理单元来说是非常昂贵的任务，因此通常在开发阶段执行一次（烘烤照明），然后将结果用于运行时的静态照明。

Baking of lighting is the way of precomputing and storing data that describes how light rays bounce around static geometry causing indirect lighting. Adding indirect lighting to modelling helps significantly improve the realistic look of the scene.“光烘焙”是一种预先计算和存储数据的方式，该数据描述光线如何在静态几何体周围反弹并导致间接照明。在建模中添加间接照明有助于显着改善场景的逼真的外观。

The Bake Lighting window provides the interface to light baking settings in UnigineEditor.Bake Lighting窗口提供了在UnigineEditor内部进行光烘焙的接口。

The following approaches are available:可以使用以下方法：

• Lightmapping.灯光映射。
• Voxel-based GI.基于体素的GI 。
• Using Environment Probes.使用Environment Probes。

注意

Lighting from all types of Light Sources is baked, however, note that both direct and indirect (bounced) light is baked from emissive objects, while light sources provide only indirect light for baking and are to be kept enabled to provide direct light and specular highlights.烘焙所有类型的光源的照明，但是请注意，直接和间接（反射）光都是从发光物体烘焙的，而光源仅提供用于烘焙的间接光，并且应保持启用状态以提供直接光和镜面高光 。

Omni, Projected, and World light sources have the Mode parameter that defines their contribution to the light baking process and determines if shadows are to be baked.Omni, Projected和World light源具有Mode参数，该参数定义它们对光烘焙过程的作用，并确定是否要烘焙阴影。

The following modes are available:Use the Lighting Mode parameter to define how a surface contributes to lighting. The following modes are available:可以使用以下模式：

• Dynamic. The light source provides direct realtime lighting only. It is considered disabled while light baking is being calculated, that is why the scene remains unlit when the light is turned off after light baking. No shadows are baked.

  Dynamic light source enabled. No GI is baked.Dynamic light source enabled. No GI is baked.	Dynamic light source disabled.Dynamic light source disabled.

  Dynamic light source enabled. No GI is baked.Dynamic light source disabled.

  The Dynamic mode excludes the surface from use in static lighting and is suitable for dynamic shadows. Use this option for dynamic objects.

  

  The Advanced mode enables manual adjustment of all lighting-related settings:
  • Shadow Mode;
  • Cast Global Illumination;
  • Bake to Environment Probes;
  • Lightmaps Parameters.
  Dynamic. 光源仅提供直接的实时照明。 在计算光烘焙时，它被认为是禁用的，这就是为什么在光烘焙后关闭光源时场景保持不亮的原因。 没有阴影被烘烤。

  Dynamic light source enabled. No GI is baked.启用动态光源。没有GI被烘烤。	Dynamic light source disabled.动态光源已禁用。

• Static. The light source contributes to light baking and remains enabled all the time providing direct realtime lighting while the indirect light is being baked. When lighting is baked, such light sources are not to be moved and modified. Changing them can make lighting inconsistent and require re-baking. Shadows for Omni, Proj, and World lights are baked.

  Static light source enabled.Static light source enabled.	Static light source disabled. Indirect light is baked into a Voxel Probe.Static light source disabled. Indirect light is baked into a Voxel Probe.

  Static light source enabled.Static light source disabled. Indirect light is baked into a Voxel Probe.

  The Static mode is optimized for use in static global illumination, reflections and shadows.

  

  Surfaces in the Static lighting mode block and reflect light when baking lighting to Voxel Probes and lightmaps, visible for static reflections provided by Environment Probes and cast cached shadows, lightmapping is available for them. This option is best suitable for immovable objects of static environment.

  Static. 光源有助于光的烘烤，并始终保持启用状态，从而在烘烤间接光时提供直接的实时照明。 烘烤照明时，请勿移动此类光源。 否则，此选项可能会导致眼睛记录的物理准确性不足。Omni, Proj和World灯的阴影已烘烤。

  Static light source enabled.启用了静态光源。	Static light source disabled. Indirect light is baked into a Voxel Probe.静态光源已禁用。间接光被烘烤。