LYGIA Shader Library

Use:

brightnessContrast(<float|vec3|vec4> color, <float> brightness, <float> amcontrastount)

Check it on Github

#ifndef FNC_BRIGHTNESSCONTRAST
#define FNC_BRIGHTNESSCONTRAST
float brightnessContrast( float v, float b, float c ) { return ( v - 0.5 ) * c + 0.5 + b; }
vec3 brightnessContrast( vec3 v, float b, float c ) { return ( v - 0.5 ) * c + 0.5 + b; }
vec4 brightnessContrast( vec4 v, float b, float c ) { return vec4(( v.rgb - 0.5 ) * c + 0.5 + b, v.a); }
#endif

Use:

brightnessContrast(<float|float3|float4> color, <float> brightness, <float> amcontrastount)

Check it on Github

#ifndef FNC_BRIGHTNESSCONTRAST
#define FNC_BRIGHTNESSCONTRAST
float brightnessContrast( float value, float brightness, float contrast ) {
    return ( value - 0.5 ) * contrast + 0.5 + brightness;
}

float3 brightnessContrast( float3 color, float brightness, float contrast ) {
    return ( color - 0.5 ) * contrast + 0.5 + brightness;
}

float4 brightnessContrast( float4 color, float brightness, float contrast ) {
    return float4(brightnessContrast(color.rgb, brightness, contrast), color.a);
}
#endif