Fog Volume Settings

intermediate concepts

Volumetric Fog Volume Settings

Each Volumetric Fog volume is configured through a Fog Profile. Below is a complete reference of all profile parameters.

Right-click in the Hierarchy and select Effects > Volumetric Fog & Mist 2 > Fog Volume.
Click New Fog Profile or assign an existing profile.
Position and scale the volume using the Transform component.

Creating a Volumetric Fog volume

Parameter	Description	Default
Raymarch Quality	Number of samples used by the shader. Lower values improve performance.	Medium
Raymarch Near Distance Quality	Extra samples near the camera. A value of 8 covers ~9 m with boosted density that fades to normal. Higher values push this zone farther.	8
Raymarch Min Step	Minimum step size between samples. Increasing improves performance but reduces accuracy.	0.1
Dithering	Reduces banding artifacts when fog renders in front of solid surfaces.	1
Jittering	Reduces banding artifacts on fog edges.	0.5

Parameter	Description	Default
Noise Texture	3D noise texture for fog shape. Custom textures can be found in demo folders or generated via the Noise Generator tool.	Built-in
Noise Strength	How strongly noise affects fog shape.	1
Noise Scale / Final Multiplier	Size and final amplitude of the noise pattern.	1 / 1
Use Detail Noise	Combines primary noise with additional 3D detail noise for more compelling fog.	Off
Detail Noise Texture	Custom 3D detail texture (red channel only). Additional textures in the demo folder.	Built-in
Scale Noise With Height	Automatically adapts the noise frequency to the fog volume's height. At 0, noise scale is fixed regardless of volume size. At 1, noise fully scales with the volume's Y dimension - useful for maintaining consistent cloud appearance across different world scales.	0
Constant Density	When enabled, disables noise entirely for a smooth, uniform fog. Saves performance.	Off

Parameter	Description	Default
Density	Overall fog density. Low values produce subtle mist; high values produce thick fog.	1
Shape	Box or Sphere shape for the fog volume.	Box
Border	Smooth fog volume edges to avoid hard cutoffs.	0.1
Distance	Distance from camera at which fog starts rendering.	0
Distance Fall Off	Gradient length for the distance start/end transition.	0
Max Distance	Maximum distance for fog rendering. Reduce for better performance.	—
Max Distance FallOff	Smooth fade at the maximum distance boundary.	0

Parameter	Description	Default
Albedo	Base color and transparency of the fog.	White (semi-transparent)
Brightness	Overall brightness multiplier.	1
Deep Obscurance	Darkens fog at the center of the volume for added depth perception.	0
Distance Near Color / Far Color	Tints fog based on distance to camera. Active only when Distance > 0.	White / White
Depth Gradient	Color gradient based on distance to camera (requires a gradient texture).	Off
Height Gradient	Color gradient based on vertical position. Symmetrical above and below volume center.	Off

Parameter	Description	Default
Light Diffusion Power / Intensity	Controls directional light scattering through the fog (god rays).	—
Specular Color / Threshold / Intensity	Simulated light reflections on the fog surface.	—
Receive Shadows	Enables shadow reception from the directional light.	Off
Shadow Intensity	Controls the darkness of received shadows.	0.5
Shadow Max Distance	Maximum distance for shadow computation. Reduce for performance.	—
Use Day Night Cycle	Syncs fog intensity/color with Sun and Moon (assigned in Volumetric Fog Manager).	Off

Parameter	Description	Default
Turbulence	Animation speed of the fog noise over time.	0
Wind Direction	Direction vector for fog movement.	(1, 0, 0)

Created automatically when you add the first fog volume. The manager exposes global settings:

Parameter	Description
Main Camera	Camera used for fog rendering. Auto-detected if not set.
Sun	Directional light used as the primary light source.
Moon	Optional secondary directional light for day/night cycle.
Downscaling	Reduces fog rendering resolution. Values of 1.25–2.0 improve performance.
Blur	Post-process blur to smooth noise artifacts.
Flip Depth Texture	Workaround for inverted depth bugs in certain URP versions.
Shader Options	Advanced shader settings (blue noise, orthographic camera, max iterations, etc.).

Parameter	Description
Render Queue	Controls rendering order relative to other transparent objects.
Rendering Layer Mask	Controls which lights affect this fog volume (requires Rendering Layers in URP).
Update Mode	When Visible — updates only when the camera can see the volume. When Camera Inside Area — updates while camera is within a boundary.

Was this page helpful? |