光照贴图过程将预先计算场景中表面的亮度,并将结果存储在称为“光照贴图”的纹理中供以后使用。
光照贴图可以包含直射光和间接光。该光照纹理可与颜色(反照率)和浮雕(法线)之类的对象表面信息材质相关联的着色器一起使用。
The data baked into lightmaps cannot change at runtime. Real-time lights can be overlaid and used additively on top of a lightmapped scene, but cannot interactively change the lightmaps themselves.
通过这种方法,我们可在游戏中移动我们的光照,通过降低实时光计算量潜在提高性能,适应性能较低的硬件,如移动平台。
Unity 提供以下光照贴图程序来生成光照贴图:
如需了解有关设置光照贴图的建议,请参阅光照贴图:入门。
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