shader_type canvas_item;

uniform sampler2D noise : repeat_enable;

uniform sampler2D noise2 : repeat_enable;

uniform float l = 100.;

void fragment() {

vec2 uv = UV;

float ll = l * 0.005;

float y = sin(uv.x*7.*ll - TIME * 3.71) * .34 + 1.

+ sin(uv.x*7.*ll - TIME * 1.24) * .70

+ sin(uv.x*7.*ll - TIME * 3.11) * .35

;

y *= .5;

y = mix(y, .5, uv.x);

y = mix(y, .5, 1.-uv.x);

float alpha = COLOR.a;

COLOR.a = smoothstep(.02, .0, abs(uv.y - y)) * .5;

COLOR *= texture(noise, UV + vec2(TIME*.17, 0.)) * texture(noise2, UV + vec2(.12*TIME, .1*floor(TIME*7.4)));

COLOR.a += smoothstep(.07, .0, abs(uv.y - y)) * .4;

COLOR.a += smoothstep(.15, .0, abs(uv.y - y)) * .2;

COLOR.a += smoothstep(.2, .0, abs(uv.y - y)) * .1;

COLOR.a += smoothstep(.4, .0, abs(uv.y - y)) * .1 * abs(sin(TIME));

COLOR.a *= smoothstep(.0, .1, uv.x);

COLOR.a *= smoothstep(.0, .2, 1.-uv.x);

COLOR.a *= alpha;

}