animate anaglyph - https://pastebin.com/raw/f2cjp2LA

glitch#2.shader

shader_type canvas_item; 

uniform float AMPLITUDE = .1; 
uniform float SPEED = 5.0;

vec4 rgbShift( in vec2 p , in vec4 shift, in sampler2D tex) { 
	vec2 rs = vec2(shift.x,-shift.y); 
	vec2 gs = vec2(shift.y,-shift.z); 
	vec2 bs = vec2(shift.z,-shift.x);

	float r = texture(tex, p+rs).x;
	float g = texture(tex, p+gs).y;
	float b = texture(tex, p+bs).z;
	
	return vec4(r,g,b,1.0);
}

float rand(in vec2 n) { 
	return fract(sin(dot(n, vec2(12.9898, 4.1414))) * 43758.5453); 
}

vec4 rgbnoise(in vec2 p) { 
	return vec4( vec3( rand(p+183.234), rand(p+32.28), rand(p+161.837) ) * rand(p), 1);
}

vec4 vec4pow( in vec4 v, in float p ) {
	return vec4(pow(v.x,p),pow(v.y,p),pow(v.z,p),v.w); }

void fragment() { 
	vec4 c = vec4(0.0,0.0,0.0,1.0);
	vec4 shift = vec4pow(rgbnoise(vec2(SPEED*TIME,2.0*SPEED*TIME/25.0 )),8.0)* vec4(AMPLITUDE,AMPLITUDE,AMPLITUDE,1.0);
	
	c += rgbShift(SCREEN_UV, shift, SCREEN_TEXTURE);
	c.a = texture(SCREEN_TEXTURE, SCREEN_UV).a;
	
	COLOR = c;
}