#version 330

// Input vertex attributes (from vertex shader)
in vec2 fragTexCoord;
in vec4 fragColor;

// in vec3 worldPosition;
in vec3 worldNormal;

// Input uniform values
uniform sampler2D texture0;
uniform vec4 colDiffuse;

// Output fragment color
out vec4 finalColor;

uniform vec3 ambient;
uniform vec3 lightDir;
uniform vec3 lightColor;


// NOTE: Add your custom variables here

void main()
{
    // Texel color fetching from texture sampler
    vec4 texelColor = texture(texture0, fragTexCoord);

    // final color is the color from the texture 
    //    times the tint color (colDiffuse)
    //    times the fragment color (interpolated vertex color)

    float NDotL = dot(lightDir, -worldNormal);
    float toon = 0.5 * smoothstep(0.5, 0.51, NDotL) + 0.5;
    vec3 light = mix(vec3(ambient), lightColor, toon);

    finalColor = texelColor*colDiffuse*fragColor * vec4(light, 1);
}