upd_res_frag

algo.glsl

@@ -1,34 +1,34 @@
 vec2 hash2( vec2 p )
 {
-	p = vec2( dot(p,vec2(63.31,127.63)), dot(p,vec2(395.467,213.799)) );
-	return -1.0 + 2.0*fract(sin(p)*43141.59265);
+    p = vec2( dot(p,vec2(63.31,127.63)), dot(p,vec2(395.467,213.799)) );
+    return -1.0 + 2.0*fract(sin(p)*43141.59265);
 }
 
-void mainImage( out vec4 fragColor, in vec2 fragCoord )
+void main(void)
 {
-    float invzoom = 100.;
-    vec2 uv = invzoom*((fragCoord-0.5*iResolution.xy)/iResolution.x);
-    float bounds = smoothstep(9.,10.,length(uv*vec2(0.7,0.5)));
+    float invzoom = 64.;
+    vec2 uv = invzoom*((gl_FragCoord.xy-0.5*resolution.xy)/resolution.x);
+    float bounds = smoothstep(9.,10.,length(uv*vec2(0.74,0.55)));
 
     float a=0.;
-    vec2 h = vec2(floor(7.*iTime), 0.);
+    vec2 h = vec2(floor(7.*time), 0.);
     for(int i=0; i<50; i++){
         float s=sign(h.x);
         h = hash2(h)*vec2(15.,20.);
-    	a += s*atan(uv.x-h.x, uv.y-h.y);
+        a += s*atan(uv.x-h.x, uv.y-h.y);
     }
 
     uv += 20.*abs(hash2(h));
 
     a+=atan(uv.y, uv.x);
 
     float w = 0.8;
-    float p=(1.-bounds)*w;
+    float p=(1.-bounds)*w; 
     float s = min(0.3,p);
-    float l = length(uv)+0.319*a;
+    float l = length(uv)+0.319*a; 
 
     float m = mod(l,2.);
     float v = (1.-smoothstep(2.-s,2.,m))*smoothstep(p,p+s,m);
 
-	fragColor = vec4(v,v,v,1.);
-}
+    glFragColor = vec4(v,v,v,1.);
+}