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inspired by pinterest idea.

https://nemutas.github.io/text-ring/

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Memo

Blinn-Phong modelを使った光沢表現

WebGL: adding specular light without the help of THREE.JS

text-ring/src/webgl/shaders/torusFrag.glsl

Lines 10 to 21 in c7e7dd7

float specular(vec3 light, float shininess, float diffuseness) {
vec3 lightVector = normalize(-light);
vec3 halfVector = normalize(vEye + lightVector);
float NdotL = dot(vNormal, lightVector);
float NdotH = dot(vNormal, halfVector);
float kDiffuse = max(0.0, NdotL);
float NdotH2 = NdotH * NdotH;
float kSpecular = pow(NdotH2, shininess);
return kSpecular + kDiffuse * diffuseness;
}

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