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.
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10
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20
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30
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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.
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10
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20
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30
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near_start
The distance at which the light begins to fade in. ie, 0 = light source.
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2
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4
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8
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near_end
The distance at which the light reaches its full value.
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5
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10
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20
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far_start
The distance at which the light begins to fade out.
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5
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10
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20
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far_end
The distance at which the light has faded out to 0.
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5
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10
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20
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name
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