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    glsl-specular-gaussian

    1.0.0 • Public • Published

    glsl-specular-gaussian

    Computes specular power from a Gaussian microfacet distribution

    Example

    #pragma glslify: gaussSpec require(glsl-specular-gaussian) 
     
    uniform vec3 eyePosition;
    uniform vec3 lightPosition;
     
    uniform float shininess;
     
    varying vec3 surfacePosition;
    varying vec3 surfaceNormal;
     
    void main() {
      vec3 eyeDirection = normalize(eyePosition - surfacePosition);
      vec3 lightDirection = normalize(lightPosition - surfacePosition);
      vec3 normal = normalize(surfaceNormal);
     
      float power = gaussSpec(lightDirection, viewDirection, normal, shininess);
     
      gl_FragColor = vec4(power,power,power,1.0);
    }

    Usage

    Install with npm:

    npm install glsl-specular-gaussian
    

    Then use with glslify.

    API

    #pragma glslify: gaussSpec require(glsl-specular-gaussian) 
    float gaussSpec(vec3 lightDir, vec3 eyeDir, vec3 normal, float shininess)

    Computes the specular power in the Gaussian model

    • lightDir is a unit length vec3 pointing from the surface point toward the light
    • eyeDir is a unit length vec3 pointing from the surface point toward the camera
    • normal is the surface normal at the sample point
    • shininess is the size of the specular hight light. Smaller values give a sharper spot, while larger values give a more spread out highlight

    Returns A float representing the specular power

    License

    (c) 2014 Mikola Lysenko. MIT License

    Install

    npm i glsl-specular-gaussian

    DownloadsWeekly Downloads

    19

    Version

    1.0.0

    License

    MIT

    Last publish

    Collaborators

    • dy
    • archmoj
    • hughsk
    • mikolalysenko
    • substack
    • mattdesl
    • chrisdickinson
    • yoshuawuyts
    • mikkoh
    • rezaali
    • tatumcreative
    • wwwtyro
    • thibauts
    • bpostlethwaite
    • dfcreative
    • erkaman
    • gre
    • rreusser
    • vorg