LYGIA Shader Library

brightnessMatrix (lygia/color/brightnessMatrix)

Generate a matrix to change a the brightness of any color

Use:

brightnessMatrix(<float> amount)

Check it on Github


#ifndef FNC_BRIGHTNESSMATRIX
#define FNC_BRIGHTNESSMATRIX
mat4 brightnessMatrix(in float a) {
    return mat4(  1., 0., 0., 0.,
                  0., 1., 0., 0.,
                  0., 0., 1., 0.,
                  a, a, a, 1. );
}
#endif

Use:

brightnessMatrix(<float> amount)

Check it on Github


#ifndef FNC_BRIGHTNESSMATRIX
#define FNC_BRIGHTNESSMATRIX
float4x4 brightnessMatrix(in float amount) {
    return float4x4(  1., 0., 0., amount,
                      0., 1., 0., amount,
                      0., 0., 1., amount,
                      0., 0., 0., 1. );
}
#endif

Examples

Licenses

LYGIA is dual-licensed under the Prosperity License and the Patron License for sponsors and contributors.

Sponsors and contributors are automatically added to the Patron License and they can ignore the any non-commercial rule of the Prosperity Licensed software (please take a look to the exception).

It's also possible to get a permanent comercial license hook to a single and specific version of LYGIA.

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