#version 460

struct material_type {
    vec3 ambient;
    vec3 diffuse;
};

struct light_property {
    vec3 direction;
};

uniform material_type material;
uniform light_property light;

in vec3 frag_normal;

layout (location = 0) out vec4 frag_color;

void main() {
    float diffuse_weight = max(-dot(frag_normal, light.direction), 0.0);
    vec3 color = material.ambient + diffuse_weight * material.diffuse;
    frag_color = vec4(color, 1.0);
}