From b9f3d8911c1786eefa697ab31793183033089e23 Mon Sep 17 00:00:00 2001
From: polyfloyd <floyd@polyfloyd.net>
Date: Sat, 19 May 2018 15:07:14 +0200
Subject: [PATCH] Add ether.glsl

---
 ether.glsl | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)
 create mode 100644 ether.glsl

diff --git a/ether.glsl b/ether.glsl
new file mode 100644
index 0000000..2241edb
--- /dev/null
+++ b/ether.glsl
@@ -0,0 +1,30 @@
+//Ether by nimitz (twitter: @stormoid)
+
+#define t iTime
+mat2 m(float a){float c=cos(a), s=sin(a);return mat2(c,-s,s,c);}
+float map(vec3 p){
+	p.xz*= m(t*0.4);p.xy*= m(t*0.3);
+	vec3 q = p*2.+t;
+	return length(p+vec3(sin(t*0.7)))*log(length(p)+1.) + sin(q.x+sin(q.z+sin(q.y)))*0.5 - 1.;
+}
+
+void mainImage( out vec4 fragColor, in vec2 fragCoord ){
+//	vec2 p = fragCoord.xy/iResolution.y - vec2(.9,.5);
+	vec2 p = (fragCoord.xy / max(iResolution.y, iResolution.x));
+	p *= 1.3;
+	p -= vec2(.9, 0);
+
+	vec3 cl = vec3(0.);
+	float d = 2.5;
+	for(int i=0; i<=5; i++)	{
+		vec3 p = vec3(0,0,5.) + normalize(vec3(p, -1.))*d;
+		float rz = map(p);
+		float f =  clamp((rz - map(p+.1))*0.5, -.1, 1. );
+		vec3 l = vec3(0.1,0.3,.4) + vec3(5., 2.5, 3.)*f;
+		cl = cl*l + (1.-smoothstep(0., 2.5, rz))*.7*l;
+		d += min(rz, 1.);
+	}
+	fragColor = vec4(cl, 1.);
+}
+
+// https://www.shadertoy.com/view/MsjSW3