shader_type canvas_item;

// Snippets of code drawn from https://gist.github.com/Bleuje/1e497df4505ca24c39ab3930a95700b3

uniform sampler2D sim_texture;

float gn(in vec2 coordinate, in float seed){
    return fract(tan(distance(coordinate*(seed+0.118446744073709551614), vec2(0.118446744073709551614, 0.314159265358979323846264)))*0.141421356237309504880169);
}

void fragment() {
	vec3 orig = texture(sim_texture, UV).rgb;
	float agent = orig.r;
	float trail = orig.g;
	
	COLOR = vec4(agent, trail, orig.b, 1.0);
}