#version 430 core

out vec4 fragColor;

float linearizeDepth(float depth, float near, float far) {
    return (-2.0 * near * far) / ((far - near) * depth - (far + near));
}

void main()
{
    float linearDepth = linearizeDepth(gl_FragCoord.z, 0.05, 20.0);

    fragColor = vec4(1- linearDepth / 20.0, 1- linearDepth / 20.0, 1- linearDepth / 20.0, 1.0);
}