30 lines
875 B
GLSL
30 lines
875 B
GLSL
//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
|