#version 460
layout(location = 0) in vec4 v_color;
layout(location = 1) in vec2 v_uv;
layout(location = 2) in vec3 v_normal_vs;

layout(location = 0) out vec4 out_color;

layout(set = 2, binding = 0) uniform sampler2D atlas;

void main() {
    vec3 light_dir = normalize(vec3(0.5, 1.0, 0.8));

    float ambient  = 0.2;
    float diffuse  = max(dot(v_normal_vs, light_dir), 0.0);
    float lighting = ambient + (1.0 - ambient) * diffuse;

    vec2 uv = vec2(v_uv.x, 1.0-v_uv.y);
    out_color = texture(atlas, uv);// + v_color;
    //out_color = v_color * vec4(v_normal_vs,1.0);
    //out_color = vec4(v_color.rgb * lighting, v_color.a);
    //out_color = vec4(1.0);
    //out_color = vec4(viz(v_normal_vs), 1.0);
    //out_color = vec4(lighting);
}