当前位置：网站首页>SDF accelerate trace

SDF accelerate trace

2022-04-22 21:03:00 【DBBH】

threejs Communication group 511163089 Insert picture description here
sdf full name signed distance field
sdf What information does it represent , Is the current point inside or outside the surface , The stored value is divided into two parts , Positive and negative determine internal and external , The value is the distance
If you have sdf Information , You can do this
You are now ray It's red dot , The distance to the red dot , You can step directly to the edge of the big circle where the red dot is located , Then this new point gets his distance , It's another big step , So for light , The acceleration is still quite obvious