cmd line:
	slr -i jgwtf.fx -o jgwtf.png -x -s 1097

Draws frame 1097 @ 60fps for the specific visual









The shader file:


#define PI 3.14159265358979
#define beat 592.
#define chaos_factor 1.22
#define zoom_factor 1.

uniform float iTime;
uniform vec2 iResolution;

vec2 rotate(vec2 uv, float r)
{
    return uv.x * vec2(cos(r), -sin(r)) + uv.y * vec2(sin(r), cos(r));
}

float hash12(vec2 p)
{
    vec3 p3 = fract(vec3(p.xyx) * .1031);
    p3 += dot(p3, p3.yzx + 33.33);
    return fract((p3.x + p3.y) * p3.z);
}

vec2 polar(vec2 uv, vec2 center)
{
    vec2 diff = uv - center;
    return vec2(distance(uv, center), atan(diff.y, diff.x));
}

float randomwave(vec2 uv, vec2 rf)
{
    float rfac = hash12(rf);
    float rbeat = mod(beat + iTime * 0.5, 300.);
    uv.y += rbeat * 0.0314159 * chaos_factor;
    return sin(uv.x * sin(uv.y * pow(rfac * 2., 2.)) * 30. * rfac) * sin(uv.y * sin(uv.x * sin(rbeat * 0.31415 * chaos_factor) * rfac) + rbeat) * 1.;
}

float trisin(float v)
{
    return abs(1. - abs(1. - mod(v, PI) / (PI * .5))) * 2. - 1.;
}
float sqsin(float v)
{
    return smoothstep(-0.5,0.5, sin(v));
}

float randomwave2(vec2 uv, vec2 rf)
{
    float rbeat = beat + iTime * 0.5 - 100.;
    float rfac = hash12(rf);
    uv.y += rbeat * 0.0314159 * chaos_factor;
    return trisin(uv.x * trisin(uv.y * pow(rfac * 2., 2.)) * 30. * rfac) * trisin(uv.y * sqsin(uv.x * sin(rbeat * 0.31415 * chaos_factor) * rfac) + rbeat) * 1.;
}
float wackbg2(vec2 uv)
{
    vec2 puv = polar(uv * zoom_factor, vec2(1.5));
    puv.x *= 0.5;
    
    float rw = randomwave2(puv, vec2(0));
    for(int i = 0; i < 8; i++)
    {
        rw += randomwave2(puv, vec2(i) * 100.);
    }
    return smoothstep(0.5, 0.501,rw);
}

void main()
{
    vec2 uv = vec2(gl_TexCoord[0].x, (1. - gl_TexCoord[0].y) * iResolution.y / iResolution.x);
    float discolor = 0.2;
    float dsc = smoothstep(0.4,0.401,randomwave(uv * 1.5 + sin(beat + iTime * 0.1), vec2(300.))) * discolor + discolor * 2.;
    vec3 bgcol = mix(vec3(.1), vec3(uv.x,0.2,1.-uv.x), dsc);
    vec3 fgcol = mix(vec3(.95), vec3(1.-uv.x,0.95,uv.x), dsc);
    float wack = wackbg2(uv);

    // Output to screen
    gl_FragColor = vec4(mix(bgcol, fgcol, wack),1.0);
}