LYGIA Shader Library

glow (lygia/color/blend/glow)

Photoshop Glow blend mode mplementations sourced from this article on https://mouaif.wordpress.com/2009/01/05/photoshop-math-with-glsl-shaders/

Dependencies:

Use:

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

Check it on Github



#ifndef FNC_BLENDGLOW
#define FNC_BLENDGLOW
float blendGlow(in float base, in float blend) {
    return blendReflect(blend, base);
}

vec3 blendGlow(in vec3 base, in vec3 blend) {
    return blendReflect(blend, base);
}

vec3 blendGlow(in vec3 base, in vec3 blend, in float opacity) {
    return (blendGlow(base, blend) * opacity + base * (1. - opacity));
}
#endif

Dependencies:

Use:

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

Check it on Github



#ifndef FNC_BLENDGLOW
#define FNC_BLENDGLOW
float blendGlow(in float base, in float blend) {
    return blendReflect(blend, base);
}

float3 blendGlow(in float3 base, in float3 blend) {
    return blendReflect(blend, base);
}

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

Dependencies:

Use:

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

Check it on Github



#ifndef FNC_BLENDGLOW
#define FNC_BLENDGLOW
float blendGlow(float base, float blend) {
    return blendReflect(blend, base);
}

float3 blendGlow(float3 base, float3 blend) {
    return blendReflect(blend, base);
}

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

License

MIT License (MIT) Copyright (c) 2015 Jamie Owen

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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