Standard distance-based fog often creates a "thick air" effect that lacks natural grounding. (Height Fog) solves this by using the world-space Y (or Z) coordinate to modulate density. This allows artists to fill valleys with dense mist while keeping peaks clear, a technique vital for open-world games and cinematic environments. 2. Technical Implementation Advanced fog systems typically use one of two methods:
Popular assets like the Advanced Vertical Fog Shader in the Unity Asset Store or Unreal's Exponential Height Fog provide several "Advanced" features: Download File Advanced Vertical Fog Height Fog ...
Using smoothstep(LowerHeight, UpperHeight, currentY) to create an inverse lerp that defines where the fog begins and ends. 3. Core Features of "Advanced" Fog Assets Standard distance-based fog often creates a "thick air"