Atmosphere

Overview

Add a colored scattering glow around a world with a separate atmosphere shell.

Shader menu · Atmosphere

Visual example

Terrestrial 01 at density_multiplier 999. See the matched density comparison.

Where to find it

Paths are relative to Assets/FORGE3D/Planets HDRP.

Find the materials under Atmosphere/. On Prefabs/Planet_Terrestrial_01.prefab, select the Atmosphere_Terrestrial_01 child and its Atmosphere/Atmosphere_Terrestrial_01.mat material.

Main settings

Group	Inspector setting and property ID	What it changes
Atmosphere	Ray _Ray, Mie _Mie, Ambient _Ambient	Color the broad limb, the glow toward the light and the material’s ambient contribution.
Emission	light_intensity _light_intensity, density_multiplier _density_multiplier	Set overall glow gain and the density that shapes scattering and attenuation.
Atmosphere	Planet Radius _PlanetRadius, Atmosphere Radius _AtmosphereRadius, Global Scale _GlobalScale	Keep these values matched to the authored body and shell.

Advanced settings

Group	Inspector setting and property ID	What it changes
Atmosphere	g _g, mie_height_scale _mie_height_scale	Shape how concentrated the glow is toward the light and how high that part of the glow extends. Start with the preset.
Quality	Steps I _StepsI, Steps L _StepsL	Set the sample counts along the viewing path and toward the light. Compare limb quality and frame cost before raising them.
Lighting	Use Point Light _UsePointLight	Leave off for a Directional Light. See the single-point shot for a positional setup.

Practical example

Keep the stock radii and opaque body. Set a fixed Exposure, then change Ray for the broad rim and light_intensity for brightness. Rotate the Directional Light to move the glow around the limb.

Related topics

Atmosphere workflow · Lighting and exposure · Shader Reference