https://i.ytimg.com/vi/vze2wnl6duY/hqdefault.jpg
sometimes we can not use high poly models, so we can bake a normal map from high poly models to give more details in our low poly models
source
https://i.ytimg.com/vi/vze2wnl6duY/hqdefault.jpg
sometimes we can not use high poly models, so we can bake a normal map from high poly models to give more details in our low poly models
source