WIP shadertoy integration?
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Ava Gaiety W
parent
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commit
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2 changed files with 160 additions and 1 deletions
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@ -34,9 +34,151 @@
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<link rel="icon" type="image/png" sizes="32x32" href="/img/site/favicons/favicon-32x32.png">
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<link rel="icon" type="image/png" sizes="16x16" href="/img/site/favicons/favicon-16x16.png">
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<link rel="manifest" href="/img/site/favicons/site.webmanifest">
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<script src="https://xemantic.github.io/shader-web-background/dist/shader-web-background.min.js"></script>
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<script type="x-shader/x-fragment" id="Image">
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precision highp float;
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uniform vec2 iResolution;
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uniform float iTime;
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uniform sampler2D iChannel0;
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// ... other needed uniforms
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// -- Paste your Shadertoy code here:
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#define NUM_LAYERS 10.
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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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float Star(vec2 uv, float flare) {
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float col = 0.;
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float d = length(uv);
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float m = .02/d;
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float rays = max(0., 1. - abs(uv.x * uv.y * 1000.));
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m += rays * flare;
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uv *= Rot(3.1415/4.);
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rays = max(0., 1. - abs(uv.x * uv.y * 1000.));
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m += rays * .3 * flare;
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m *= smoothstep(1., .2, d);
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return m;
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}
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float Hash21(vec2 p) {
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p = fract(p * vec2(123.34, 456.21));
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p += dot(p, p+45.32);
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return fract(p.x*p.y);
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}
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vec3 StarLayer(vec2 uv) {
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vec3 col = vec3(0.);
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vec2 gv = fract(uv) - 0.5;
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vec2 id = floor(uv);
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for(int y = -1; y <= 1; y++ ) {
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for(int x = -1; x <= 1; x++) {
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vec2 offs = vec2(x, y);
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float n = Hash21(id + offs);
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float size = fract(n*345.32);
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vec2 p = vec2(n, fract(n*34.));
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float star = Star(gv - offs - p + .5, smoothstep(.8, 1., size) * .6);
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vec3 hueShift = fract(n*2345.2 + dot(uv /420.,texture2D(iChannel0, vec2(0.25, 0.)).rg))*vec3(.2, .3, .9)*123.2;
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vec3 color = sin(hueShift) * .5 + .5;
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color = color * vec3(1., .25, 1.+size);
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star *= sin(iTime*3.+n*6.2831)*.4+1.;
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col += star * size * color;
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}
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}
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return col;
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}
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vec2 N(float angle) {
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return vec2(sin(angle), cos(angle));
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}
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void mainImage( out vec4 fragColor, in vec2 fragCoord )
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{
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vec2 uv = (fragCoord - 0.5*iResolution.xy)/iResolution.y;
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vec2 M = (fragCoord - iResolution.xy*.5)/iResolution.y;
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float t = iTime * .01;
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uv.x = abs(uv.x);
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uv.y += tan((5./6.) * 3.1415) * .5;
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vec2 n = N((5./6.) * 3.1415);
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float d = dot(uv - vec2(.5, 0.), n);
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uv -= n * max(0., d) * 2.;
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// col += smoothstep(.01, .0, abs(d));
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n = N((2./3.) * 3.1415);
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float scale = 1.;
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uv.x += 1.5 / 1.25;
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for(int i=0; i<5; i++) {
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scale *= 1.25;
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uv *= 1.25;
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uv.x -= 1.5;
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uv.x = abs(uv.x);
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uv.x -= 0.5;
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uv -= n * min(0., dot(uv, n)) * 2.;
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}
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uv += M * 4.;
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uv *= Rot(t);
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vec3 col = vec3(0.);
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float layers = 10.;
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for(float i=0.; i < 1.; i+=1./NUM_LAYERS) {
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float depth = fract(i+t);
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float scale = mix(20., .5, depth);
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float fade = depth * smoothstep(1., .9, depth);
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col += StarLayer(uv * scale + i * 453.2) * fade;
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}
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fragColor = vec4(col,1.0);
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}
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// -- End of Shadertoy code
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void main() {
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mainImage(gl_FragColor, gl_FragCoord.xy);
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}
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</script>
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<script>
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shaderWebBackground.shade({
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shaders: {
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Image: {
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uniforms: {
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iResolution: (gl, loc, ctx) => gl.uniform2f(loc, ctx.width, ctx.height),
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iTime: (gl, loc) => gl.uniform1f(loc, performance.now() / 5000),
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iChannel0: (gl, loc, ctx) => ctx.texture(loc, ctx.buffers.BufferA),
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}
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}
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}
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});
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</script>
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</head>
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<body class="bg-crust bg-[length:20rem] bg-[url('/img/site/stars-light.gif')] dark:bg-[url('/img/site/stars-dark.gif')]">
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<body class="bg-crust bg-[length:20rem]">
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<div class="flex gap-y-12 flex-col sm:flex-row">
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<header class="flex gap-2 justify-between flex-col xs:flex-row sm:flex-col sm:justify-start">
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<img
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17
styles.css
17
styles.css
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@ -52,6 +52,23 @@
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}
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}
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body:before {
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background: url('/img/site/stars-light.gif');
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content: '';
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position: fixed;
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opacity: 0.85;
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top: 0;
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right: 0;
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bottom: 0;
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left: 0;
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z-index: -1;
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}
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@media (prefers-color-scheme: dark) {
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body:before {
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background: url('/img/site/stars-dark.gif');
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}
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}
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.hljs-comment {
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font-style: italic;
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}
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