shader_type canvas_item;

uniform sampler2D grade_icon;

void fragment() {
	vec4 final_color = COLOR;
	
	vec4 texture_color_waves1 = texture(grade_icon, UV*(1.0+sin(FRAGCOORD.x*0.013+TIME+FRAGCOORD.y*0.05)));
	final_color.rgb = mix(
		final_color.rgb,
		final_color.rgb * 0.97,
		texture_color_waves1.a
	);
	
	vec4 texture_color_waves2 = texture(grade_icon, vec2(UV.x*1.2-0.1, float(int(FRAGCOORD.y+TIME*23.0)%60)/50.0));
	final_color.rgb = mix(
		final_color.rgb,
		final_color.rgb * 0.95,
		texture_color_waves2.a 
	);
	
	int step_size_x = 7;
	int step_size_y = 9;
	vec4 texture_color_waves3 = texture(grade_icon, vec2(
		float(int(FRAGCOORD.x-TIME*3.0)%step_size_x)/float(step_size_x-1),
		1.0-float(int(FRAGCOORD.y-TIME)%step_size_y)/float(step_size_y-1)
	));
	final_color.rgb = mix(
		final_color.rgb,
		final_color.rgb * 0.91,
		texture_color_waves3.a 
	);
	
	// Stretched
	vec4 texture_color_base = texture(grade_icon, UV);
	final_color.rgb = mix(
		final_color.rgb,
		final_color.rgb * 0.85,
		texture_color_base.a
	);
	
	
	COLOR = final_color;
	
}