---
name: "Clutter::Cogl::Color"
section: "3pm"
platform: "linux"
package: "libclutter-perl"
version: "1.002-1"
release: "Debian 6.0 (Squeeze)"
platforms: ["linux"]
url: "https://new.carta.tech/Clutter::Cogl::Color"
---

# Clutter::Cogl::Color(3pm)

COGL Color representation

## NAME

Clutter::Cogl::Color - COGL Color representation

## DESCRIPTION

Colors in COGL are described as arrays of four values, one for each channel of the RGBA representation.

The values can either be expressed as a byte value, going from 0 to 255, or as normalized floating point values, between 0 and 1.

## METHODS

### (red, green, blue, alpha) = Clutter::Cogl::Color-\>premultiply ($color)

- •

  `$color` (array of R, G, B, A values)

Converts a non-premultiplied color to a pre-multiplied color. For example, semi-transparent red is (1.0, 0, 0, 0.5) when non-premultiplied and (0.5, 0, 0, 0.5) when premultiplied.

## SEE ALSO

Clutter

## COPYRIGHT

Copyright (C) 2006, 2007, 2008  OpenedHand Ltd

Copyright (C) 2009  Intel Corporation

This module is free software; you can redistribute it and/or modify it under the terms of either:

- •

  the GNU Lesser General Public Library version 2.1; or

- •

  the Artistic License, version 2.0.

See Clutter for the full copyright notice.