// Copyright 2022 Simon Boyé
#version 450

layout(location = 1) in vec3 in_normal;
layout(location = 2) in vec3 in_color;
layout(location = 3) in vec3 in_edge_dist;

layout(location = 0) out vec4 out_color;

void main() {
    vec3 edge_dist = vec3(0.75) - in_edge_dist;
    float edge = clamp(
        max(edge_dist[0], max(edge_dist[1], edge_dist[2])),
        0.0, 1.0
    );

    vec3 edge_color = vec3(1.0);
    vec3 light_dir = normalize(vec3(-0.2, -0.1, -1.0));

    vec3 color = in_color;

    // vec3 normal = normalize(in_normal);
    // color *= clamp(
    //     dot(normal, light_dir),
    //     0.0, 1.0
    // );

    out_color = vec4(mix(color, edge_color, edge), 1.0);
}