shader_type canvas_item;
render_mode unshaded;
uniform float strength : hint_range(0.0, 1.0) = 0.0;
void fragment() {
	vec2 p = (UV - vec2(0.5)) * 2.0;
	float edge = smoothstep(0.28, 1.12, length(p));
	COLOR = vec4(0.65, 0.015, 0.025, edge * strength * 0.62);
}