Number range for color in GLSL

Posted by kotoko on Stack Overflow See other posts from Stack Overflow or by kotoko
Published on 2012-06-11T10:30:23Z Indexed on 2012/06/11 10:40 UTC
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colors

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glsl

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fragment-shader

I'm figuring out how to set a colour in a Fragment Shader.

This statement gl_FragColor = (0.1,0.6,1,1); gives me white regardless of what I enter in the first 3 values.

I was expecting to either give it values between 0 and 255 or 0 and 1 but neither seems to work.
I can change how bright it is with values from 0 to 1 in the fourth value, but nothing for colour.

Can anybody tell me if:

gl_FragColor is the right variable to set.
What is the range of values for the first three values.
What am I currently making the Shader do.

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