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https://github.com/CookieCollective/Live-Coding-Sources.git
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152 lines
3.1 KiB
GLSL
152 lines
3.1 KiB
GLSL
#version 410 core
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uniform float fGlobalTime; // in seconds
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uniform vec2 v2Resolution; // viewport resolution (in pixels)
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uniform sampler1D texFFT; // towards 0.0 is bass / lower freq, towards 1.0 is higher / treble freq
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uniform sampler1D texFFTSmoothed; // this one has longer falloff and less harsh transients
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uniform sampler1D texFFTIntegrated; // this is continually increasing
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uniform sampler2D texChecker;
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uniform sampler2D texNoise;
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uniform sampler2D texTex1;
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uniform sampler2D texTex2;
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uniform sampler2D texTex3;
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uniform sampler2D texTex4;
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layout(location = 0) out vec4 out_color; // out_color must be written in order to see anything
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#define time fGlobalTime
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float sph(vec3 p, float r){
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return length(p)-r;
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}
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float cyl(vec2 p, float r){
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return length(p)-r;
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}
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vec3 rep(vec3 p, float s) {
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return (fract(p/s-0.5)-0.5)*s;
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}
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mat2 rot(float a) {
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float ca=cos(a);
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float sa=sin(a);
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return mat2(ca,sa,-sa,ca);
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}
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float smin(float a,float b, float h) {
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float k=clamp((a-b)/h*0.5+0.5,0,1);
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return mix(a,b, k) - k * (1-k)*h;
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}
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float rnd(float t){
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return fract(sin(t*423.23)*4568.232);
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}
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float curve(float t, float d) {
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float g = t/d;
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return mix( rnd(floor(g)), rnd(floor(g)+1), pow(smoothstep(0,1, fract(g)), 10));
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}
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float map(vec3 p) {
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vec3 rp = rep(p, 0.1);
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vec3 rp2 = rep(p, 0.12);
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float f = texture(texNoise, p.xz * 0.1).x;
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float v = clamp(length(p.xz)*0.5, 0, 1) * 1.5;
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float m = -p.y + 0.1 + f*2 + v;
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float o = -p.y + 2.1;
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float c = cyl(rp.xz, 0.02);
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float c2 = cyl(rp2.xz, 0.02);
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float m2 = -p.y + 0.1 + f*2 + v;
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c = smin(m+.2 - f*2, c, -0.2);
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c = smin(m+.2 - f*2+0.1, c2, -0.2);
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return min(c,min(m, o));
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}
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vec3 norm(vec3 p) {
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float base = map(p);
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vec2 off = vec2(0.01,0);
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return normalize( vec3( base-map(p-off.xyy), base-map(p-off.yxy), base-map(p-off.yyx) ));
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}
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vec3 cam(vec3 p) {
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float t = time;
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p.xz *= rot(t);
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p.yz *= rot(sin(t + curve(time+5,1.2)*0.5) * 0.1);
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return p;
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}
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void main(void)
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{
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vec2 uv = vec2(gl_FragCoord.x / v2Resolution.x, gl_FragCoord.y / v2Resolution.y);
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uv -= 0.5;
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uv /= vec2(v2Resolution.y / v2Resolution.x, 1);
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uv.x += (curve(time+5, 0.7)-0.5) * 0.4;
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uv.y += (curve(time+5, 0.8)-0.5) * 0.3;
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vec3 ro = vec3(0,1,-5);
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vec3 rd = normalize(vec3(-uv, 0.1 + curve(time, 0.2) * 2));
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ro = cam(ro);
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rd = cam(rd);
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vec3 p = ro;
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float dd = 0;
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for(int i=0; i<100; ++i) {
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float d = map(p);
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if(d<0.001) {
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break;
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}
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if(dd>100) {
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dd=100;
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break;
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}
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p+=rd*d*0.5;
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dd+=d*0.5;
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}
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vec3 n = norm(p);
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vec3 l = normalize(vec3(-1));
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vec3 h = normalize(l-rd);
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float lum = max(0, dot(n,l));
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float amb = -n.y*0.5+0.5;
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vec3 col = vec3(0);
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col += vec3(1,0.9,0.5) * lum * 0.5;
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col += vec3(0.2,0.2,1.0) * amb * 0.2;
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col += vec3(0.9,0.9,1.0) * lum * pow(max(0, dot(n,h)),30);;
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col *= 5/dd;
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col += vec3(1,0.5,0.2) * 0.1 * exp(dd*0.2);
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float t2 = time + curve(time+85, 0.8) + + curve(time+45, 1.3);
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col.xy *= rot(t2);
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col.zy *= rot(t2*0.7);
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col.xz *= rot(t2*1.2);
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col = abs(col);
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col *= min(1,pow(1-length(uv*0.9),2) * 10);
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out_color = vec4(col, 1);
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} |