#version 410

uniform sampler2D texture1;
in vec2 uvV;

out vec4 fragColor;

void main (void)
{
    vec4 p = texture(texture1, uvV);
    // Z^2 + C.
    
    vec2 C = uvV;
    vec2 Z = p.xy;
    
    // x is real part, y is imaginary part.
    vec2 Z2 = vec2(Z.x * Z.x - Z.y * Z.y, 2.0 * Z.x * Z.y) + C;

    fragColor = vec4(p.xy + vec2(0.5, 0.5), 0.0, 1.0);
}