funcs_hologram

float random(float x){
    return fract(sin(x * 12.9898 + 78.233) * 43758.5453);
}
float random2_1 (vec2 uv) {
    return fract(sin(dot(uv.xy + vec2(sin(TIME), cos(TIME)),
                      vec2(12.9898,78.233))) * 43758.5453123);
}
float fresnel(float amount, vec3 normal, vec3 view){
    return pow((1.0 - clamp(dot(normalize(normal), normalize(view)), 0.0, 1.0 )), amount);
}