light_decay

Class

Shader

Output

float

Synopsis

 

This filter can be added to all Arnold Lights. This is where you will specify the attenuation ranges. All lights in Arnold use a physically-based falloff by default, but the light_decay filter can be used to adjust the falloff for artistic purposes.

 

use_near_atten

The Near Attenuation value sets the distance at which the light intensity "fades in". It works like a reverse decay. The light does not shine from the source to the Start range of the Near Attenuation then increases brightness until the End range of Near Attenuation.

use_far_atten

The Far Attenuation value sets the distance at which the light "fades out". It works like a normal decay, but you can specify the start and end distance. The light diminishes from the Far Start range to the Far End range using a smooth ramp between.

near_start

The distance at which the light begins to fade in. ie, 0 = light source. 

near_end

The distance at which the light reaches its full value. 

far_start
The distance at which the light begins to fade out.


far_end
The distance at which the light has faded out to 0. 


name

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