lygia/v1.2.0/color/brightnessMatrix)generate a matrix to change a the brightness of any color
Use:
brightnessMatrix(<float> amount)
#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)
#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
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