@animech-public/playcanvas

Version:

PlayCanvas WebGL game engine

15 lines (11 loc) • 559 B

JavaScript

var lightSpecularPhongPS = /* glsl */`
float calcLightSpecular(float gloss, vec3 reflDir, vec3 lightDirNorm) {
    float specPow = gloss;

    // Hack: On Mac OS X, calling pow with zero for the exponent generates hideous artifacts so bias up a little
    return pow(max(dot(reflDir, -lightDirNorm), 0.0), specPow + 0.0001);
}

float getLightSpecular(vec3 h, vec3 reflDir, vec3 worldNormal, vec3 viewDir, vec3 lightDirNorm, float gloss, mat3 tbn) {
    return calcLightSpecular(gloss, reflDir, lightDirNorm);
}
`;

export { lightSpecularPhongPS as default };