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https://github.com/CookieCollective/Live-Coding-Sources.git
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112 lines
2.9 KiB
GLSL
112 lines
2.9 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 sdist(p,r) (length(p)-r)
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#define time fGlobalTime
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#define repeat(p,r) (mod(p,r)-r/2.)
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mat2 rot (float a) {
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float c = cos(a), s = sin(a);
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return mat2(c,-s,s,c);
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}
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void amod (inout vec2 p, float c) {
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float an = (3.14159*2.)/c;
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float a = atan(p.y,p.x)+an/2.;
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a = mod(a, an)-an/2.;
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p = vec2(cos(a),sin(a))*length(p);
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}
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float smin ( float a, float b, float t) {
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float h = clamp(.5+.5*(b-a)/t,0.,1.);
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return mix(b,a,h)-t*h*(1.-h);
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}
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float map (vec3 pos) {
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float scene = 10.;
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vec3 p = pos;
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const float count = 3.;
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for (float i = count; i >= 0.; --i) {
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float r = i / count;
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r = r * r;
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p.xz *= rot(p.y * .4 / r);
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amod(p.xz, 5.);
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p.x -= .5 * r - sin(time * 2. + p.y * 2. + r * 3.14529) * .1 * r;
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vec3 pp = p;
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scene = min(scene, sdist(p.xz, .01));
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}
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p = pos;
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p.xz = vec2(atan(p.x,p.z),length(p.xz));
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p.y += sin(atan(p.z,p.x)/3.14159/2.)*.2;
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p.y = repeat(p.y+time, .6);
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float wave = 1. - .1*sin(time * 2. + pos.y * 4.);
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p.z -= wave;
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scene = min(scene, sdist(p.zy, .01));
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p = pos;
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p.xz *= rot(p.y);
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amod(p.xz, 8.);
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p.x -= wave;
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scene = smin(scene, sdist(p.xz, .01), .1);
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p = pos;
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p.xz *= rot(-p.y);
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amod(p.xz, 8.);
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p.x -= wave;
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scene = smin(scene, sdist(p.xz, .01), .1);
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float dd = length(pos);
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p.y += atan(pos.z,pos.x) * .5;
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scene = smin(scene, sdist(p.yz, .01 - dd * .03), .1);
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p.x -= .5;
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p.x = repeat(p.x, .8);
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scene = smin(scene, sdist(p.xy, .02), .2);
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return scene;
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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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vec3 eye = vec3(0,1,-3);
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eye.xz *= rot(time);
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eye.z += sin(time);
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vec3 target = vec3(0);
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vec3 front = normalize(target - eye);
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vec3 right = normalize(cross(vec3(0,1,0),front));
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vec3 up = normalize(cross(front, right));
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vec3 ray = normalize(front + uv.x * right + uv.y * up);
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vec3 color = vec3(uv,0);
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float shade = 0.;
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vec3 pos = eye;
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const float count = 70.;
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for (float i = count; i >= 0.; --i) {
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float dist = map(pos);
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if (dist < .0001) {
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shade = i / count;
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break;
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}
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dist *= .5;
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pos += ray * dist;
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}
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float t = shade * 40. + time;
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color = vec3(.75)+vec3(.25)*cos(vec3(.1,.2,.3)*t);
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color *= shade;
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out_color = vec4(color, 1);
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} |