#version 330 core

in vec2 UV;
in vec3 normal;

out vec3 color;

uniform sampler2D textureSampler;

void main() {
    color = texture(textureSampler, UV).rgb * (0.3 + 0.7 * max(dot(normal, vec3(1, 1, 1)), 0.0));

    // Doom 3 lighting
    // color = texture(textureSampler, UV).rgb * max(dot(normal, vec3(1, 1, 1)), 0.0);
}