---
title: "VRayAColorOp"
canonical: "https://documentation.chaos.com/space/VC4D/116856655/VRayAColorOp"
format: markdown
---
This page provides information about the V-Ray A Color Operation Texture.


## **Overview**

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## **Inputs**

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## **Outputs**

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> Macro (anchor)



## **Bias and Gain Equations**

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<span style="color: #272727">The exact equations for the Christophe Schlick and Kenneth Perlin definitions are:</span>



## **References**

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<span style="color: #272727">[*] Kenneth Perlin and Eric M Hoffert. Hypertexture. SIGGRAPH, 1989.</span>  
<span style="color: #272727">[*] Christophe Schlick. Fast alternatives to Perlin’s bias and gain functions. Graphics Gems, 4, 1994</span>