Emissive / Self Illumination

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Emissive/Self Illumination

Emissive elements are crucial when working with large scale scene and there is a need for fast and realistic looking lighting.

The color can be changed freely and even a custom texture or video can be added.

Set any color to emissive slot under material editor, if objects are on static mode they will produce light.

Self illuminated materials can also be controlled globally from Multipliers settings.

Emissive: Sets materials emissivity / self Illumination

color: Shows the set color or average color of set texture.

value: Overall intensity

UV: Information about materials UV channel which associates a map with an object's mapping coordinates. Different UV channels can have different U and V tiling values, different U and V offsets

texture or video: Place for texture or video-file. RENDERLights is able to use live video as texture: Type c@pture to use it.

An example how emissive material affects scene. Left; Red box´s emissive value is 0%/black. Middle; Emissive value is same as diffuse color (red). Right:

Emissivity with texture. See also real-time reflection in metal sphere.

Self-illuminated materials

Self illuminated materials unlike any other virtual program, are light emitters, they can glow to produce various effects like neon lights or simply to lit entire scenes.

Self illuminated object are considered as indirect illumination, therefore they don't cast direct shadows, but they can do a fairly decent work to cast shades.

To create self illuminated materials, change the value of the emissive slot in the materials properties.

Self illuminated materials create nice overall lighting, a good practice is to subdivide a bit the mesh of the model or to use lightmap baking to capture a better

sense of the overall lighting. especially on Interior models, this will help to create a most effective radiosity effect.

Subdivided model, can create a better distribution of light, but also increases you model size considerably, use it carefully. To subdive a model you should use tools

available within your cad or 3d program, RENDERlights does not offer yet such a feature.