ditch shadertoy, laggy
This commit is contained in:
Ava Gaiety W
parent
970f90ed8e
commit
cb9a4158cc
4 changed files with 1 additions and 359 deletions
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@ -34,152 +34,9 @@
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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="/shader-web-background.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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// https://www.shadertoy.com/view/ftt3R7
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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]">
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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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<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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@ -12,7 +12,6 @@
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"build": "npx @11ty/eleventy",
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"postbuild": "run-s postbuild:*",
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"postbuild:highlighttheme": "cp ./node_modules/@catppuccin/highlightjs/css/catppuccin-variables.rgb.css ./_site",
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"postbuild:shader": "cp ./vendor/shader-web-background.js ./_site",
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"postbuild:styles": "npx tailwindcss -i styles.css -o _site/styles.css --env production",
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"optimize": "rm -rf _site/_jampack && jampack _site",
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"test": "echo \"Error: no test specified\" && exit 1",
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17
styles.css
17
styles.css
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@ -52,23 +52,6 @@
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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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197
vendor/shader-web-background.js
vendored
197
vendor/shader-web-background.js
vendored
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@ -1,197 +0,0 @@
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// -- https://xemantic.github.io/shader-web-background/
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const shaderWebBackground = {}; (() => {
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'use strict'; const t = (a, b) => {
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b.initHalfFloatRGBATexture(b.width, b.height); a.texParameteri(a.TEXTURE_2D,
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a.TEXTURE_MIN_FILTER, a.LINEAR); a.texParameteri(a.TEXTURE_2D, a.TEXTURE_MAG_FILTER,
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a.LINEAR); a.texParameteri(a.TEXTURE_2D, a.TEXTURE_WRAP_S, a.CLAMP_TO_EDGE); a.texParameteri(a.TEXTURE_2D,
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a.TEXTURE_WRAP_T, a.CLAMP_TO_EDGE)
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}, x = (a, b) => {
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console.warn("shader-web-background cannot shade, adding fallback CSS classes");
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document.documentElement.classList.add("shader-web-background-fallback"); b.classList.add("shader-web-background-fallback");
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if (a instanceof shaderWebBackground.GlError) console.warn("Not sufficient WebGL support:",
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a); else throw a;
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};
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function y(a, b) { if (!a) throw new shaderWebBackground.ConfigError(b); }
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function z(a) {
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y(a instanceof HTMLCanvasElement, "config.canvas must be instance of canvas");
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return a
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}
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function A() {
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const a = document.createElement("canvas"), b = a.style; a.id = "shader-web-background"; b.width =
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"100vw"; b.height = "100vh"; b.position = "fixed"; b.top = "0"; b.left = "0"; b.zIndex = -9999; return a
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}
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function B(a, b, c) {
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y(a instanceof HTMLScriptElement && a.type === b, 'Shader source element of id "' +
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c + '" should be of type: <script type="' + (b + '" id="' + c + '">'))
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}
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function D(a) {
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const b = document.getElementById(a); y(b, 'Missing shader source: <script type="x-shader/x-fragment" id="' +
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(a + '">')); B(b, "x-shader/x-fragment", a); return b.text
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}
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function E(a) {
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a += "Vertex"; const b = document.getElementById(a); return b ? (B(b, "x-shader/x-vertex",
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a), b.text) : "attribute vec2 V;void main(){gl_Position=vec4(V,0,1);}"
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}
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function F(a, b) { "loading" !== document.readyState ? b() : window.addEventListener(a, b) }
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class G {
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constructor(a, b, c, d) {
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this.g = c; const l = a.gl; this.h = () => {
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for (const f of d) f.u(l,
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f.location, b)
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}; this.i = () => {
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var f = c.v, h = a.gl; h.bindBuffer(h.ARRAY_BUFFER, a.j); h.enableVertexAttribArray(f);
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h.vertexAttribPointer(f, 2, h.FLOAT, !1, 0, 0); h.drawArrays(h.TRIANGLE_STRIP, 0, 4); h.disableVertexAttribArray(f);
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h.bindBuffer(h.ARRAY_BUFFER, null); f = a.gl; for (h = 0; h < a.g; h++)f.activeTexture(f.TEXTURE0 +
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h), f.bindTexture(f.TEXTURE_2D, null); a.g = 0
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}
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}
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}
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function H(a) {
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var b = { antialias: !1, depth: !1, alpha: !1 }; try { return new I(a, b) } catch (c) {
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throw new shaderWebBackground.GlError(c.message);
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}
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}
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function J(a, b, c, d, l, f) {
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function h(e, m, n) {
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try {
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{
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var k = p; const q = k.gl, P = K(k, e, q.VERTEX_SHADER, m),
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Q = K(k, e, q.FRAGMENT_SHADER, n), v = q.createProgram(); q.attachShader(v, P); q.attachShader(v,
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Q); q.linkProgram(v); var r = v
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} return r
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} catch (q) {
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throw new shaderWebBackground.ConfigError(q.message);
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}
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} const p = H(a), w = [], g = {
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gl: p.gl, canvas: a, width: 0, height: 0, cssPixelRatio: 0, cssWidth: 0,
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cssHeight: 0, isOverShader: (e, m) => {
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const n = a.getBoundingClientRect(); return e >= n.left &&
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e <= n.right && m >= n.top && m <= n.bottom
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}, toShaderX: e => (e - a.getBoundingClientRect().left) *
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g.cssPixelRatio + .5, toShaderY: e => a.height - (e - a.getBoundingClientRect().top) * g.cssPixelRatio -
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.5, s: () => g.cssWidth !== a.clientWidth || g.cssHeight !== a.clientHeight ? (g.resize(), !0) :
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!1, resize: () => {
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const e = window.devicePixelRatio || 1, m = a.clientWidth, n = a.clientHeight,
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k = Math.floor(m * e), r = Math.floor(n * e); a.width = k; a.height = r; g.width = k; g.height = r; g.cssPixelRatio =
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e; g.cssWidth = m; g.cssHeight = n; p.gl.viewport(0, 0, p.canvas.width, p.canvas.height); for (const q of w) q.g.l(k,
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r)
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}, texture: (e, m) => {
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{
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var n = p; const k = n.gl; m = m instanceof L ? m.g : m; k.activeTexture(k.TEXTURE0 +
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n.g); k.bindTexture(k.TEXTURE_2D, m); k.uniform1i(e, n.g++)
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}
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}, buffers: {}, initHalfFloatRGBATexture: (e,
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m) => { p.h.g(e, m) }
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}, R = Object.keys(b).length - 1; let S = 0; for (const e in b) {
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if (S++ < R) {
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const k =
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b[e].texture || t; g.buffers[e] = M(p, () => { k(p.gl, g) })
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} const m = N(p, h(e, E(e), D(e)), g.buffers[e]),
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n = b[e].uniforms || {}; var u = Object.keys(n); for (const k of m.m) y(n[k.name], 'No configuration for uniform "' +
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k.name + '" defined in shader "' + e + '"'), u = u.filter(r => r !== k.name); 0 !== u.length && console.warn('Extra uniforms configured for shader "' +
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e + '", which are not present in the shader code - might have been removed by GLSL compiler if not used: ' +
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u.join(", ")); u = m.m.map(k => ({ location: k.location, u: n[k.name] })); w.push(new G(p, g,
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m, u))
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} const C = () => {
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g.s() && d && d(g.width, g.height, g); l && l(g); for (const e of w) e.g.i(e.h,
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e.i); f && f(g); requestAnimationFrame(C)
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}; F("load", () => {
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g.resize(); c && c(g); d && d(g.width,
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g.height, g); requestAnimationFrame(C)
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}); return g
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}
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shaderWebBackground.Error = class extends Error { constructor(a) { super(a); this.name = "shaderWebBackground.Error" } };
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shaderWebBackground.ConfigError = class extends shaderWebBackground.Error {
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constructor(a) {
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super(a);
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this.name = "shaderWebBackground.ConfigError"
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}
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};
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shaderWebBackground.GlError = class extends shaderWebBackground.Error {
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constructor(a) {
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super(a); this.name =
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"shaderWebBackground.GlError"
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}
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};
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shaderWebBackground.shade = function(a) {
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y(a, "Missing config argument"); const b = a.canvas ?
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z(a.canvas) : A(); y(a.shaders, "No shaders specified in config"); try {
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const c = J(b, a.shaders,
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a.onInit, a.onResize, a.onBeforeFrame, a.onAfterFrame); a.canvas || F("DOMContentLoaded",
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() => { document.body.appendChild(b) }); return c
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} catch (c) { (a.onError || x)(c, b) }
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}; const O = [-1, 1, 1, 1, -1, -1, 1, -1];
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function T(a, b) { return a.j(a.gl.getExtension(b), b + " extension is not supported") }
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class U { constructor(a, b) { this.gl = a; this.j = b } g() { } }
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class V extends U {
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constructor(a, b) {
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super(a, b); this.h = T(this, "OES_texture_half_float");
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T(this, "OES_texture_half_float_linear")
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} g(a, b) {
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const c = this.gl; c.texImage2D(c.TEXTURE_2D,
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0, c.RGBA, a, b, 0, c.RGBA, this.h.HALF_FLOAT_OES, null)
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}
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}
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class W extends U {
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constructor(a, b) { super(a, b); T(this, "EXT_color_buffer_float"); this.gl.getExtension("OES_texture_float_linear") } g(a,
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b) {
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const c = this.gl; c.texImage2D(c.TEXTURE_2D, 0, c.RGBA16F, a, b, 0, c.RGBA, c.HALF_FLOAT,
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null)
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}
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}
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function X(a) {
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a = a.split(/\r?\n/); const b = a.length.toString().length; var c = []; a.forEach((d,
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l) => {
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l = (l + 1).toString(); l = l.length >= b ? l : " ".repeat(b - l.length) + l; c.push(l + ": " + d +
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"\n")
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}); return c.join("")
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} function M(a, b) { return new L(a.gl, () => { b(a.gl) }) }
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function N(a, b, c) {
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const d = a.gl; a = []; const l = d.getProgramParameter(b, d.ACTIVE_UNIFORMS);
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for (let f = 0; f < l; f++) {
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const h = d.getActiveUniform(b, f); a.push({
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name: h.name, location: d.getUniformLocation(b,
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h.name)
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})
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} return {
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v: d.getAttribLocation(b, "V"), m: a, l: c ? (f, h) => c.l(f, h) : () => { }, i: (f,
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h) => { d.useProgram(b); f(); c ? (f = c.g, c.g = c.h, c.h = f, c.i(h)) : h() }
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}
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}
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function K(a, b, c, d) {
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a = a.gl; c = a.createShader(c); a.shaderSource(c, d); a.compileShader(c);
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if (!a.getShaderParameter(c, a.COMPILE_STATUS)) {
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const l = String(a.getShaderInfoLog(c));
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a.deleteShader(c); b = "Cannot compile shader - " + b + ": " + l; console.log(b); console.log(X(d));
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throw Error(b);
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} return c
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}
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class I {
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constructor(a, b) {
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this.canvas = a; const c = (l, f) => { if (!l) throw Error(f); return l };
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let d = a.getContext("webgl2", b); if (d) this.h = new W(d, c); else if (d = a.getContext("webgl",
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b)) this.h = new V(d, c); c(d, "webgl context not supported on supplied canvas element: " +
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a); this.gl = d; a = d.createBuffer(); d.bindBuffer(d.ARRAY_BUFFER, a); d.bufferData(d.ARRAY_BUFFER,
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new Float32Array(O), d.STATIC_DRAW); d.bindBuffer(d.ARRAY_BUFFER, null); this.j = a; this.buffers =
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{}; this.g = 0
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}
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}
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function Y(a) {
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const b = a.gl, c = b.createTexture(); b.bindTexture(b.TEXTURE_2D, c); a.o(b);
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b.bindTexture(b.TEXTURE_2D, null); return c
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}
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class L {
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constructor(a, b) {
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||||
this.j = a.createFramebuffer(); this.gl = a; this.o = b; this.g = this.h =
|
||||
null
|
||||
} l() {
|
||||
this.h && this.gl.deleteTexture(this.h); this.g && this.gl.deleteTexture(this.g);
|
||||
this.h = Y(this); this.g = Y(this)
|
||||
} i(a) {
|
||||
const b = this.gl; b.bindFramebuffer(b.FRAMEBUFFER,
|
||||
this.j); b.framebufferTexture2D(b.FRAMEBUFFER, b.COLOR_ATTACHMENT0, b.TEXTURE_2D, this.g,
|
||||
0); a(); b.framebufferTexture2D(b.FRAMEBUFFER, b.COLOR_ATTACHMENT0, b.TEXTURE_2D, null,
|
||||
0); b.bindFramebuffer(b.FRAMEBUFFER, null)
|
||||
}
|
||||
};
|
||||
})()
|
||||
Loading…
Add table
Reference in a new issue