LYGIA Shader Library

Use:

blendAdd(<float|vec3> base, <float|vec3> blend [, <float> opacity])

Check it on Github

#ifndef FNC_BLENDADD
#define FNC_BLENDADD
float blendAdd(in float base, in float blend) { return min(base + blend, 1.); }
vec3  blendAdd(in vec3 base, in vec3 blend) { return min(base + blend, vec3(1.)); }
vec3  blendAdd(in vec3 base, in vec3 blend, float opacity) { return (blendAdd(base, blend) * opacity + base * (1. - opacity)); }
#endif

Use:

blendAdd(<float|float3> base, <float|float3> blend [, <float> opacity])

Check it on Github

#ifndef FNC_BLENDADD
#define FNC_BLENDADD
float blendAdd(in float base, in float blend) {
    return min(base + blend, 1.);
}

float3 blendAdd(in float3 base, in float3 blend) {
    return min(base + blend, float3(1., 1., 1.));
}

float3 blendAdd(in float3 base, in float3 blend, float opacity) {
    return (blendAdd(base, blend) * opacity + base * (1. - opacity));
}
#endif

Use:

blendAdd(<float|float3> base, <float|float3> blend [, <float> opacity])

Check it on Github

#ifndef FNC_BLENDADD
#define FNC_BLENDADD
float blendAdd(float base, float blend) { return min(base + blend, 1.); }
float3  blendAdd(float3 base, float3 blend) { return min(base + blend, float3(1.)); }
float3  blendAdd(float3 base, float3 blend, float opacity) { return (blendAdd(base, blend) * opacity + base * (1. - opacity)); }
#endif