材质

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#version 330 core
struct Material {
    vec3 ambient;
    vec3 diffuse;
    vec3 specular;
    float shininess;
}; 

uniform Material material;
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void main()
{    
    // 环境光
    vec3 ambient = lightColor * material.ambient;

    // 漫反射 
    vec3 norm = normalize(Normal);
    vec3 lightDir = normalize(lightPos - FragPos);
    float diff = max(dot(norm, lightDir), 0.0);
    vec3 diffuse = lightColor * (diff * material.diffuse);

    // 镜面光
    vec3 viewDir = normalize(viewPos - FragPos);
    vec3 reflectDir = reflect(-lightDir, norm);  
    float spec = pow(max(dot(viewDir, reflectDir), 0.0), material.shininess);
    vec3 specular = lightColor * (spec * material.specular);  

    vec3 result = ambient + diffuse + specular;
    FragColor = vec4(result, 1.0);
}

code

https://gist.github.com/Flandre923/e7f5b2f673d37c8bb0cb5f9b9e12876a

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