Advanced Lighting Map
Also included in the Starter Content is the Advanced_Lighting map, which is set up to enable artists to quickly and easily see their creations in an ideal lighting setup.
Once you have opened the Advanced_Lighting map, you can begin placing assets onto the SM_AssetPlatform stage. The bulk of the setup, however, is done by the BP_LightStage Blueprint.
This Blueprint behaves like a Directional Light, skybox sphere, HDRI background, atmosphere, height fog, Sky Light, and lightshafts all together. It allows artists to have one location for most
of their lighting settings. Rotating the BP_LightStage Actor in the level defines the sun direction and HDRI rotation. The atmosphere will also respond to the Actor's rotation.
There are a number of properties you can set on the BP_LightStage, either as defaults for the Blueprint or on the placed instance in the level.
Adjusts a global multiplier on all brightness values.
If you want to use an HDRI with a directional light, you may want to paint out the sun in your HDRI before importing and then line up the sun rotation with the one in the HDRI. Shooting reference objects will help you match the direct vs. indirect light ratio.
Use Sun Light
Enables the Directional Light, which is movable by default.
Stationary Light for Sun
Makes the Directional Light stationary.
Override Sun Color
By default, the sun gets its color from the angle to match atmospheric scattering. When this option is set to true, this behavior is disabled and Tint is used instead.
Disable Sun Disk
Causes the Directional Light to not put a sun disk in the atmosphere.
Sets how far out the dynamic shadow will draw.
Enables atmospheric scattering. Most settings on the BP_LightStage for the atmosphere correspond to the same ones on an Atmospheric Fog Actor.
Enables exponential height fog.
Sets the height of the fog, so you do not have to move the Actor.
Light Shaft Bloom and Light Shaft Occlusion
Toggling these enables or disables postprocess light shafts from the sun direction.
To use the Advanced Lighting assets in an existing project, you can Migrate the Advanced_Lighting map, and all associated assets will also be migrated.