LYGIA Shader Library

Dependencies:

• lygia/v1.1.6/lighting/fresnel.glsl
• lygia/v1.1.6/lighting/fakeCube.glsl
• lygia/v1.1.6/lighting/sphericalHarmonics.glsl

Use:

<vec3> fresnel(const <vec3> f0, <float> LoH)

<vec3> fresnel(<vec3> _R, <vec3> _f0, <float> _NoV)

Check it on Github

#ifndef FNC_FRESNEL_REFLECTION
#define FNC_FRESNEL_REFLECTION

vec3 fresnelReflection(const in vec3 R, const in vec3 f0, const in float NoV) {
    vec3 frsnl = fresnel(f0, NoV);

    vec3 reflectColor = vec3(0.0);
    #if defined(FRESNEL_REFLECTION_FNC)
    reflection = FRESNEL_REFLECTION_FNC(R);

    #elif defined(ENVMAP_FNC) 
    reflectColor = ENVMAP_FNC(R, 0.001, 0.001);

    #elif defined(SCENE_SH_ARRAY)
    reflectColor = sphericalHarmonics(R);

    #elif defined(SCENE_CUBEMAP)
    reflectColor = SAMPLE_CUBE_FNC( SCENE_CUBEMAP, R, ENVMAP_MAX_MIP_LEVEL ).rgb;

    #else
    reflectColor = fakeCube(R);
    #endif

    return reflectColor * frsnl;
}

vec3 fresnelReflection(const in vec3 R, const in float f0, const in float NoV) {
    #if defined(TARGET_MOBILE) || defined(PLATFORM_RPI)
    float frsnl = fresnel(f0, NoV);

    vec3 reflectColor = vec3(0.0);
    #if defined(FRESNEL_REFLECTION_FNC)
    reflection = FRESNEL_REFLECTION_FNC(R);

    #elif defined(ENVMAP_FNC) 
    reflectColor = ENVMAP_FNC(R, 0.001, 0.001);

    #elif defined(SCENE_CUBEMAP)
    reflectColor = SAMPLE_CUBE_FNC( SCENE_CUBEMAP, R, ENVMAP_MAX_MIP_LEVEL ).rgb;

    #elif defined(SCENE_SH_ARRAY)
    reflectColor = sphericalHarmonics(R);

    #else
    reflectColor = fakeCube(R);
    #endif

    return reflectColor * frsnl;

    #else
    return fresnelReflection(R, vec3(f0, f0, f0), NoV);
    #endif
}

#ifdef STR_MATERIAL
vec3 fresnelReflection(const in Material _M) {
    return fresnelReflection(_M.R, _M.f0, _M.NoV);
}
#endif

#endif

Dependencies:

• lygia/v1.1.6/lighting/fresnel.glsl
• lygia/v1.1.6/lighting/fakeCube.glsl
• lygia/v1.1.6/lighting/sphericalHarmonics.glsl
• lygia/v1.1.6/lighting/envMap.glsl

Use:

<float3> fresnel(const <float3> f0, <float> LoH)

<float3> fresnel(<float3> _R, <float3> _f0, <float> _NoV)

Check it on Github

#ifndef FNC_FRESNEL_REFLECTION
#define FNC_FRESNEL_REFLECTION

float3 fresnelReflection(float3 R, float3 f0, float NoV) {
    float3 frsnl = fresnel(f0, NoV);

    float3 reflectColor = float3(0.0, 0.0, 0.0);

    #if defined(FRESNEL_REFLECTION_FNC)
    reflection = FRESNEL_REFLECTION_FNC(R);

    #elif defined(ENVMAP_FNC) 
    reflectColor = ENVMAP_FNC(R, 0.001, 0.001);

    #elif defined(SCENE_CUBEMAP)
    reflectColor = SAMPLE_CUBE_FNC( SCENE_CUBEMAP, R, ENVMAP_MAX_MIP_LEVEL).rgb;

    #elif defined(SCENE_SH_ARRAY)
    reflectColor = sphericalHarmonics(R);

    #else
    reflectColor = fakeCube(R);
    #endif

    return reflectColor * frsnl;
}

#endif