Pretty Hip

Add it to a color rect

My attempt at converting https://www.shadertoy.com/view/XsBfRW

Please enjoy

Shader code

shader_type canvas_item;

uniform vec4 fore_color : hint_color = vec4(0.5, 0.75, 1.0, 1.0);
uniform vec4 back_color : hint_color = vec4(1.0, 1.0, 1.0, 1.0);

void fragment()
{
	float aspect = (1.0 / TEXTURE_PIXEL_SIZE).y/(1.0 / TEXTURE_PIXEL_SIZE).x;
	float value;
	vec2 uv = UV.xy / (1.0 / TEXTURE_PIXEL_SIZE).x;
	uv -= vec2(0.5, 0.5*aspect);
	float rot = radians(45.0); // radians(45.0*sin(iTime));
	vec2 part1 = vec2(cos(rot), -sin(rot));
	vec2 part2 = vec2(sin(rot), cos(rot));
	mat2 m = mat2(part1, part2);
	uv = m * uv;
	uv += vec2(0.5, 0.5*aspect);
	uv.y+=0.5*(1.0-aspect);
	vec2 pos = 10.0*uv;
	vec2 rep = fract(pos);
	float dist = 2.0*min(min(rep.x, 1.0-rep.x), min(rep.y, 1.0-rep.y));
	float squareDist = length((floor(pos)+vec2(0.5)) - vec2(5.0) );
	float edge = sin(TIME-squareDist*0.5)*0.5+0.5;
	edge = (TIME-squareDist*0.5)*0.5;
	edge = 2.0*fract(edge*0.5);
	value = fract (dist*2.0);
	value = mix(value, 1.0-value, step(1.0, edge));
	edge = pow(abs(1.0-edge), 2.0);
	value = smoothstep( edge-0.05, edge, 0.95*value);
	value += squareDist*.1;
	COLOR = mix(back_color, fore_color, value);
	//COLOR.a = 0.25*clamp(value, 0.0, 1.0);
}