add LICENSE, shaders, Cargo.lock, and AUR package

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

shaders/light_line.frag

@@ -0,0 +1,63 @@
+// Lightning
+// By: Brandon Fogerty
+// bfogerty at gmail dot com 
+// xdpixel.com
+
+
+#ifdef GL_ES
+precision mediump float;
+#endif
+
+uniform float time;
+uniform vec2 mouse;
+uniform vec2 resolution;
+
+
+float Hash( vec2 p)
+{
+     vec3 p2 = vec3(p.xy,2.0);
+    return fract(sin(dot(p2,vec3(27.1,20.7, 2.4)))*0.5453123);
+}
+
+float noise(in vec2 p)
+{
+    vec2 i = floor(p);
+     vec2 f = fract(p);
+     f *= f * (3.0-2.0*f);
+    return mix(mix(Hash(i + vec2(0.,0.)), Hash(i + vec2(1.,0.)),f.x),
+               mix(Hash(i + vec2(0.,1.)), Hash(i + vec2(1.,1.)),f.x),
+               f.y);
+}
+
+float fbm(vec2 p)
+{
+     float v = 0.0;
+     v += noise(p*1.0) * .5;
+     v += noise(p*2.)  * .25;
+     v += noise(p*4.)  * .15;
+     return v;
+}
+
+void main( void ) 
+{
+
+	vec2 uv = ( gl_FragCoord.xy / resolution.xy ) * 2.0 - 1.0;
+
+	vec2 center = vec2(0.0, 0.0);
+	float angle = time * 0.4;
+	
+	//uv.x = cos(angle) * (uv.x - center.x) - sin(angle) * (uv.y - center.y) + center.x;
+	//uv.y = sin(angle) * (uv.x - center.y) + cos(angle) * (uv.y - center.y) + center.y;
+	
+	vec3 finalColor = vec3( 0.0 );
+	for( int i=0; i < 3; ++i )
+	{
+		float t = abs( 1.4 / (sin(uv.y + fbm( uv + time * 0.04 )) * 100.0) );
+		
+		finalColor +=  t * vec3( 2.9, 1.5, .25 );
+		finalColor = vec3(t);
+	}
+	
+	gl_FragColor = vec4( finalColor, 1.0 );
+
+}