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Added WIP Phong implementation

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This commit is contained in:
arvid schröder 2022-11-28 20:24:29 +01:00
parent 9dcbefe5a5
commit 4e3843a2fc
1 changed files with 16 additions and 5 deletions
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13
shader/phongshader.cpp
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@ -10,7 +10,18 @@ PhongShader::PhongShader(Color const &diffuseColor, float diffuseCoefficient, Co
Color PhongShader::shade(Scene const &scene, Ray const &ray) const { Color PhongShader::shade(Scene const &scene, Ray const &ray) const {
Color fragmentColor; Color fragmentColor;
// IMPLEMENT ME
for (auto &light: scene.lights()) {
auto illum = light->illuminate(scene, ray);
auto omegaI = normalized(illum.direction);
auto omegaR = 2 * dotProduct(omegaI, ray.normal) * ray.normal - omegaI;
auto cosPsi = dotProduct(ray.direction, omegaR);
auto colorI = diffuseCoefficient * diffuseColor / PI +
(specularCoefficient * specularColor * std::pow(cosPsi, shininessExponent));
fragmentColor += illum.color * colorI;
}
return fragmentColor; return fragmentColor;
} }