880 lines
27 KiB
JavaScript
880 lines
27 KiB
JavaScript
const pauseBtn = document.getElementById("pause-btn");
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const resetBtn = document.getElementById("reset-btn");
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const statsEl = document.getElementById("stats");
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const globalFpsEl = document.getElementById("global-fps");
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const shaderCountEl = document.getElementById("shader-count");
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const searchInput = document.getElementById("search-input");
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const gridEl = document.getElementById("preview-grid");
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const detailViewEl = document.getElementById("detail-view");
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const detailTitleEl = document.getElementById("detail-title");
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const detailFpsEl = document.getElementById("detail-fps");
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const detailCanvas = document.getElementById("detail-canvas");
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const backBtn = document.getElementById("back-btn");
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const API_BASE = "/api/shaders";
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/** Grid previews: limit fill-rate so many cards can stay near 60fps (detail view uses full quality). */
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const PREVIEW_MAX_PIXEL_RATIO = 1.25;
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const PREVIEW_MAX_BUFFER_LONG_SIDE = 520;
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const DETAIL_MAX_PIXEL_RATIO = 2;
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const DETAIL_MAX_BUFFER_LONG_SIDE = 2560;
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const GL_CONTEXT_OPTS = {
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alpha: false,
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antialias: false,
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depth: false,
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stencil: false,
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powerPreference: "high-performance",
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desynchronized: true,
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};
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/** Browsers cap concurrent WebGL contexts (~8); keep grid below so detail view + pool stay safe. */
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const MAX_GRID_WEBGL_CONTEXTS = 7;
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const WEBGL_TEARDOWN_DEBOUNCE_MS = 450;
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let gridGlTouchCounter = 0;
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const vertexShaderSource = `#version 300 es
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precision highp float;
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layout(location = 0) in vec2 aPosition;
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void main() { gl_Position = vec4(aPosition, 0.0, 1.0); }`;
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function toPortableGlsl(code) {
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if (!code) return "";
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let s = String(code);
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const start = s.indexOf("void mainImage");
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if (start >= 0) {
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s = s.slice(0, s.length);
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}
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s = s
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.replace(/float2/g, "vec2")
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.replace(/float3/g, "vec3")
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.replace(/float4/g, "vec4")
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.replace(/int2/g, "ivec2")
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.replace(/int3/g, "ivec3")
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.replace(/int4/g, "ivec4")
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.replace(/precise::tanh/g, "tanh")
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.replace(/ANGLE_userUniforms\._uiResolution/g, "iResolution")
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.replace(/ANGLE_userUniforms\._uiTime/g, "iTime")
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.replace(/ANGLE_userUniforms\._uiMouse/g, "iMouse")
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.replace(/ANGLE_texture\([^)]*\)/g, "vec4(0.0)")
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.replace(/ANGLE_texelFetch\([^)]*\)/g, "vec4(0.0)")
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.replace(/ANGLE_mod\(/g, "mod(")
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.replace(/\[\[[^\]]+\]\]/g, "")
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.replace(/template\s*[^\n]*\n/g, "")
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.replace(/ANGLE_out\(([^)]+)\)/g, "$1")
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.replace(/ANGLE_swizzle_ref\(([^)]+)\)/g, "$1")
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.replace(/ANGLE_elem_ref\(([^)]+)\)/g, "$1")
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.replace(/(\d+\.\d+|\d+)f\b/g, "$1");
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// Keep only helper functions + mainImage block, drop struct/template leftovers.
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const mi = s.indexOf("void mainImage");
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if (mi >= 0) {
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const head = s.slice(0, mi);
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const helpers = head
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.split("\n\n")
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.filter((blk) => /(void|float|vec[234]|mat[234])\s+[A-Za-z_][A-Za-z0-9_]*\s*\(/.test(blk))
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.join("\n\n");
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const mainPart = s.slice(mi);
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return `${helpers}\n\n${mainPart}`;
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}
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return s;
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}
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function fallbackShader(name) {
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const h = (name || "shader")
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.split("")
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.reduce((a, c) => (a * 33 + c.charCodeAt(0)) >>> 0, 5381);
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const k1 = ((h % 97) / 97).toFixed(3);
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const k2 = (((h >> 5) % 89) / 89).toFixed(3);
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return `void mainImage(out vec4 fragColor, in vec2 fragCoord) {
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vec2 uv = (fragCoord - 0.5 * iResolution.xy) / iResolution.y;
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float t = iTime;
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float v = sin(uv.x * (8.0 + ${k1} * 8.0) + t * (1.4 + ${k2} * 1.2))
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+ cos(uv.y * (10.0 + ${k2} * 6.0) - t * (1.1 + ${k1}));
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vec3 col = 0.5 + 0.5 * cos(vec3(0.2, 1.2, 2.2) + v + t);
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fragColor = vec4(col, 1.0);
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}`;
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}
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function buildFragmentShader(userCode) {
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return `#version 300 es
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precision highp float;
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out vec4 outColor;
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uniform vec3 iResolution;
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uniform float iTime;
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uniform float iTimeDelta;
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uniform int iFrame;
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uniform vec4 iMouse;
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uniform vec4 iDate;
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uniform sampler2D iChannel0;
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uniform sampler2D iChannel1;
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uniform sampler2D iChannel2;
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uniform sampler2D iChannel3;
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${userCode}
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void main() { mainImage(outColor, gl_FragCoord.xy); }`;
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}
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function setIDateUniform(gl, loc) {
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if (loc == null) return;
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const d = new Date();
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gl.uniform4f(
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loc,
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d.getFullYear(),
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d.getMonth() + 1,
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d.getDate(),
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d.getHours() * 3600 + d.getMinutes() * 60 + d.getSeconds() + d.getMilliseconds() * 0.001
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);
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}
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function createQuad(gl) {
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const quad = new Float32Array([-1, -1, 1, -1, -1, 1, -1, 1, 1, -1, 1, 1]);
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const vao = gl.createVertexArray();
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const vbo = gl.createBuffer();
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gl.bindVertexArray(vao);
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gl.bindBuffer(gl.ARRAY_BUFFER, vbo);
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gl.bufferData(gl.ARRAY_BUFFER, quad, gl.STATIC_DRAW);
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gl.enableVertexAttribArray(0);
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gl.vertexAttribPointer(0, 2, gl.FLOAT, false, 0, 0);
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gl.bindVertexArray(null);
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return { vao, vbo };
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}
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function compileProgram(gl, fragmentShaderSource) {
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function compile(type, label, source) {
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if (gl.isContextLost?.()) {
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throw new Error(`${label}: WebGL context lost`);
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}
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const shader = gl.createShader(type);
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gl.shaderSource(shader, source);
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gl.compileShader(shader);
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if (!gl.getShaderParameter(shader, gl.COMPILE_STATUS)) {
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let info = (gl.getShaderInfoLog(shader) || "").trim();
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if (!info) {
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const err = gl.getError();
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info =
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err && err !== gl.NO_ERROR
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? `WebGL getError 0x${err.toString(16)} (driver returned no compile log)`
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: "No compile log (often: shader too complex, loop/unroll limits, or driver bug). Try a simpler shader.";
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}
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gl.deleteShader(shader);
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throw new Error(`${label} shader:\n${info}`);
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}
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return shader;
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}
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const vs = compile(gl.VERTEX_SHADER, "Vertex", vertexShaderSource);
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const fs = compile(gl.FRAGMENT_SHADER, "Fragment", fragmentShaderSource);
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const program = gl.createProgram();
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gl.attachShader(program, vs);
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gl.attachShader(program, fs);
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gl.linkProgram(program);
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gl.deleteShader(vs);
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gl.deleteShader(fs);
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if (!gl.getProgramParameter(program, gl.LINK_STATUS)) {
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let info = (gl.getProgramInfoLog(program) || "").trim();
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if (!info) {
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const err = gl.getError();
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info =
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err && err !== gl.NO_ERROR
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? `WebGL getError 0x${err.toString(16)} (no link log)`
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: "No link log (vertex/fragment interface mismatch or resource limits).";
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}
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gl.deleteProgram(program);
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throw new Error(`Program link:\n${info}`);
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}
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return program;
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}
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function createTexture(gl, width, height, data) {
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const tex = gl.createTexture();
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gl.bindTexture(gl.TEXTURE_2D, tex);
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gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
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gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
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gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.REPEAT);
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gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.REPEAT);
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gl.pixelStorei(gl.UNPACK_ALIGNMENT, 1);
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gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, width, height, 0, gl.RGBA, gl.UNSIGNED_BYTE, data);
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gl.bindTexture(gl.TEXTURE_2D, null);
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return tex;
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}
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function createDefaultChannelTextures(gl, noiseSize = 256) {
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// iChannel0: audio-like lookup texture (matches many shadertoy audio assumptions)
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const w0 = 512;
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const h0 = 2;
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const d0 = new Uint8Array(w0 * h0 * 4);
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for (let x = 0; x < w0; x++) {
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const t = x / (w0 - 1);
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const fft = Math.floor(255 * Math.pow(1.0 - t, 1.8));
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const wave = Math.floor(128 + 127 * Math.sin(t * Math.PI * 10.0));
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// row0: fft, row1: waveform
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const i0 = (x + 0 * w0) * 4;
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const i1 = (x + 1 * w0) * 4;
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d0[i0] = fft; d0[i0 + 1] = fft; d0[i0 + 2] = fft; d0[i0 + 3] = 255;
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d0[i1] = wave; d0[i1 + 1] = wave; d0[i1 + 2] = wave; d0[i1 + 3] = 255;
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}
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// iChannel1/2/3: tiling noise/grain-like textures (smaller in grid previews).
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const size = noiseSize;
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const makeNoise = (scaleA, scaleB) => {
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const d = new Uint8Array(size * size * 4);
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for (let y = 0; y < size; y++) {
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for (let x = 0; x < size; x++) {
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const i = (y * size + x) * 4;
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const n = Math.floor(
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127 +
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127 *
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Math.sin((x * scaleA + y * scaleB) * 0.11) *
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Math.cos((x * scaleB - y * scaleA) * 0.07)
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);
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d[i] = n;
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d[i + 1] = (n * 37) & 255;
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d[i + 2] = (n * 73) & 255;
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d[i + 3] = 255;
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}
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}
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return d;
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};
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return [
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createTexture(gl, w0, h0, d0),
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createTexture(gl, size, size, makeNoise(1.0, 0.7)),
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createTexture(gl, size, size, makeNoise(0.8, 1.3)),
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createTexture(gl, size, size, makeNoise(1.7, 0.4)),
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];
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}
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function bindChannelTextures(gl, channelUniformLocs, channelTextures) {
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for (let i = 0; i < 4; i++) {
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if (channelUniformLocs[i] == null) continue;
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gl.activeTexture(gl.TEXTURE0 + i);
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gl.bindTexture(gl.TEXTURE_2D, channelTextures[i]);
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gl.uniform1i(channelUniformLocs[i], i);
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}
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gl.activeTexture(gl.TEXTURE0);
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}
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function computePreviewBufferSize(cssW, cssH) {
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const dpr = Math.min(window.devicePixelRatio || 1, PREVIEW_MAX_PIXEL_RATIO);
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let w = Math.max(1, Math.floor(cssW * dpr));
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let h = Math.max(1, Math.floor(cssH * dpr));
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const long = Math.max(w, h);
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if (long > PREVIEW_MAX_BUFFER_LONG_SIDE) {
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const s = PREVIEW_MAX_BUFFER_LONG_SIDE / long;
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w = Math.max(1, Math.floor(w * s));
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h = Math.max(1, Math.floor(h * s));
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}
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return { w, h };
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}
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function computeDetailBufferSize(cssW, cssH) {
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const dpr = Math.min(window.devicePixelRatio || 1, DETAIL_MAX_PIXEL_RATIO);
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let w = Math.max(1, Math.floor(cssW * dpr));
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let h = Math.max(1, Math.floor(cssH * dpr));
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const long = Math.max(w, h);
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if (long > DETAIL_MAX_BUFFER_LONG_SIDE) {
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const s = DETAIL_MAX_BUFFER_LONG_SIDE / long;
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w = Math.max(1, Math.floor(w * s));
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h = Math.max(1, Math.floor(h * s));
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}
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return { w, h };
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}
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function countGridWebGLContexts() {
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let n = 0;
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for (const p of previews) {
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if (p.gl) n += 1;
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}
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return n;
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}
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function tearDownPreviewWebGL(state) {
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if (state._tearDownTimer) {
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clearTimeout(state._tearDownTimer);
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state._tearDownTimer = null;
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}
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state._staticRendered = false;
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state._staticDirty = true;
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if (!state.gl) return;
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const gl = state.gl;
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try {
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if (state.program) gl.deleteProgram(state.program);
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if (state.vao) gl.deleteVertexArray(state.vao);
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if (state.vbo) gl.deleteBuffer(state.vbo);
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if (state.channelTextures) state.channelTextures.forEach((t) => gl.deleteTexture(t));
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} catch (_) {
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/* context may already be lost */
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}
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const ext = gl.getExtension("WEBGL_lose_context");
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if (ext) ext.loseContext();
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state.gl = null;
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state.program = null;
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state.vao = null;
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state.vbo = null;
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state.channelTextures = null;
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state.channelUniforms = null;
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state.uniforms = null;
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}
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/** Only evict GPU for cards that are not visible / filtered out — avoids thrash when many cards are on-screen. */
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function evictOffscreenGridWebGLContext() {
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const off = previews.filter((p) => p.gl && (!p.visible || p.card.style.display === "none"));
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if (!off.length) return false;
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off.sort((a, b) => (a._glTouchSeq || 0) - (b._glTouchSeq || 0));
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tearDownPreviewWebGL(off[0]);
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return true;
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}
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function ensurePreviewWebGL(state) {
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if (state.gl || state.compileFailed) return;
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const errorEl = state.card.querySelector(".error");
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while (countGridWebGLContexts() >= MAX_GRID_WEBGL_CONTEXTS) {
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if (!evictOffscreenGridWebGLContext()) break;
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}
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if (countGridWebGLContexts() >= MAX_GRID_WEBGL_CONTEXTS) {
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return;
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}
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const gl = state.canvas.getContext("webgl2", GL_CONTEXT_OPTS);
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if (!gl) {
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errorEl.textContent = "当前浏览器不支持 WebGL2";
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state.compileFailed = true;
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return;
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}
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let program;
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let codeForRender = state.code;
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try {
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program = compileProgram(gl, buildFragmentShader(codeForRender));
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errorEl.textContent = "";
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} catch (_err1) {
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try {
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codeForRender = toPortableGlsl(state.code);
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program = compileProgram(gl, buildFragmentShader(codeForRender));
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errorEl.textContent = "";
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} catch (_err2) {
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codeForRender = fallbackShader(state.name);
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try {
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program = compileProgram(gl, buildFragmentShader(codeForRender));
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errorEl.textContent = "";
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} catch (err3) {
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errorEl.textContent = `编译失败:\n${String(err3.message || err3)}`;
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state.compileFailed = true;
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const ext = gl.getExtension("WEBGL_lose_context");
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if (ext) ext.loseContext();
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return;
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}
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}
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}
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state.codeForRender = codeForRender;
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const { vao, vbo } = createQuad(gl);
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const channelTextures = createDefaultChannelTextures(gl, 128);
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const channelUniforms = [
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gl.getUniformLocation(program, "iChannel0"),
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gl.getUniformLocation(program, "iChannel1"),
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gl.getUniformLocation(program, "iChannel2"),
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gl.getUniformLocation(program, "iChannel3"),
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];
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const uniforms = {
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iResolution: gl.getUniformLocation(program, "iResolution"),
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iTime: gl.getUniformLocation(program, "iTime"),
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iTimeDelta: gl.getUniformLocation(program, "iTimeDelta"),
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iFrame: gl.getUniformLocation(program, "iFrame"),
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iMouse: gl.getUniformLocation(program, "iMouse"),
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iDate: gl.getUniformLocation(program, "iDate"),
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};
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state.gl = gl;
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state.program = program;
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state.vao = vao;
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state.vbo = vbo;
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state.channelTextures = channelTextures;
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state.channelUniforms = channelUniforms;
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state.uniforms = uniforms;
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state._glTouchSeq = ++gridGlTouchCounter;
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state._staticDirty = true;
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}
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const previews = [];
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/** Driven by scheduleRender(); only runs while detail / hover / pending static thumbs need a frame. */
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let renderRafId = 0;
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function scheduleRender() {
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if (renderRafId) return;
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renderRafId = requestAnimationFrame((ts) => {
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renderRafId = 0;
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renderAll(ts);
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});
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}
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function shouldKeepAnimatingGrid() {
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for (const p of previews) {
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if (p.card.style.display === "none") continue;
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if (!p.visible) continue;
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if (p.isPointerOver) return true;
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}
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return false;
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}
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function needsStaticThumbnailPass() {
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for (const p of previews) {
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if (p.card.style.display === "none") continue;
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if (!p.visible) continue;
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if (p.isPointerOver) continue;
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if (p.compileFailed) continue;
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if (p._staticRendered && !p._staticDirty) continue;
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if (!p.gl && countGridWebGLContexts() >= MAX_GRID_WEBGL_CONTEXTS) continue;
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return true;
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}
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return false;
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}
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function shouldScheduleNextFrame() {
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if (detailRuntime) return true;
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if (shouldKeepAnimatingGrid()) return true;
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if (needsStaticThumbnailPass()) return true;
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return false;
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}
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let paused = false;
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let elapsed = 0;
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let frame = 0;
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let lastTs = performance.now();
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let fpsCounter = 0;
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let fps = 0;
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let lastSec = 0;
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let detailFpsCounter = 0;
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let detailFps = 0;
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let detailLastSec = 0;
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let detailRuntime = null;
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let searchKeyword = "";
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let lastSignature = "";
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function createPreviewCard(shader) {
|
|
const { id, name, author = "unknown", views = 0, likes = 0, code } = shader;
|
|
const card = document.createElement("article");
|
|
card.className = "card";
|
|
card.dataset.search = `${name} ${author}`.toLowerCase();
|
|
card.innerHTML = `
|
|
<div class="card-head">
|
|
<strong>${name}</strong>
|
|
<div style="display:flex; gap:6px;">
|
|
<button type="button" class="pause-local-btn">暂停</button>
|
|
</div>
|
|
</div>
|
|
<canvas></canvas>
|
|
<div class="card-meta">
|
|
<span>by ${author}</span>
|
|
<span>views ${views} | likes ${likes}</span>
|
|
</div>
|
|
<div class="card-head error"></div>
|
|
`;
|
|
|
|
const canvas = card.querySelector("canvas");
|
|
const errorEl = card.querySelector(".error");
|
|
const pauseLocalBtn = card.querySelector(".pause-local-btn");
|
|
|
|
const state = {
|
|
id,
|
|
name,
|
|
code,
|
|
codeForRender: code,
|
|
compileFailed: false,
|
|
card,
|
|
canvas,
|
|
gl: null,
|
|
program: null,
|
|
vao: null,
|
|
vbo: null,
|
|
channelTextures: null,
|
|
channelUniforms: null,
|
|
uniforms: null,
|
|
mouse: { x: 0, y: 0, downX: 0, downY: 0, down: false },
|
|
isPlaying: true,
|
|
localTime: 0,
|
|
localFrame: 0,
|
|
lastTick: performance.now(),
|
|
visible: false,
|
|
_layoutW: 0,
|
|
_layoutH: 0,
|
|
_glTouchSeq: 0,
|
|
_tearDownTimer: null,
|
|
isPointerOver: false,
|
|
_staticRendered: false,
|
|
_staticDirty: true,
|
|
};
|
|
|
|
card.addEventListener("mouseenter", () => {
|
|
state.isPointerOver = true;
|
|
state.lastTick = performance.now();
|
|
scheduleRender();
|
|
});
|
|
card.addEventListener("mouseleave", () => {
|
|
state.isPointerOver = false;
|
|
state.localTime = 0;
|
|
state.localFrame = 0;
|
|
state._staticDirty = true;
|
|
state._staticRendered = false;
|
|
scheduleRender();
|
|
});
|
|
|
|
canvas.addEventListener("mousemove", (event) => {
|
|
const rect = canvas.getBoundingClientRect();
|
|
const bw = canvas.width || Math.max(1, state._layoutW || rect.width);
|
|
const bh = canvas.height || Math.max(1, state._layoutH || rect.height);
|
|
state.mouse.x = ((event.clientX - rect.left) / rect.width) * bw;
|
|
state.mouse.y = ((rect.bottom - event.clientY) / rect.height) * bh;
|
|
});
|
|
canvas.addEventListener("mousedown", () => {
|
|
state.mouse.down = true;
|
|
state.mouse.downX = state.mouse.x;
|
|
state.mouse.downY = state.mouse.y;
|
|
});
|
|
window.addEventListener("mouseup", () => {
|
|
state.mouse.down = false;
|
|
});
|
|
|
|
pauseLocalBtn.addEventListener("click", (event) => {
|
|
event.stopPropagation();
|
|
state.isPlaying = !state.isPlaying;
|
|
state.lastTick = performance.now();
|
|
pauseLocalBtn.textContent = state.isPlaying ? "暂停" : "继续";
|
|
scheduleRender();
|
|
});
|
|
canvas.addEventListener("click", () => openDetail(state));
|
|
|
|
gridEl.appendChild(card);
|
|
|
|
const ro = new ResizeObserver((entries) => {
|
|
for (const entry of entries) {
|
|
if (entry.target !== canvas) continue;
|
|
const cr = entry.contentRect;
|
|
state._layoutW = cr.width;
|
|
state._layoutH = cr.height;
|
|
state._staticDirty = true;
|
|
scheduleRender();
|
|
}
|
|
});
|
|
ro.observe(canvas);
|
|
state._resizeObserver = ro;
|
|
|
|
const io = new IntersectionObserver(
|
|
(entries) => {
|
|
for (const e of entries) {
|
|
if (e.target !== canvas) continue;
|
|
state.visible = e.isIntersecting;
|
|
if (e.isIntersecting) {
|
|
if (state._tearDownTimer) {
|
|
clearTimeout(state._tearDownTimer);
|
|
state._tearDownTimer = null;
|
|
}
|
|
state._staticDirty = true;
|
|
state._staticRendered = false;
|
|
ensurePreviewWebGL(state);
|
|
scheduleRender();
|
|
} else {
|
|
if (state._tearDownTimer) clearTimeout(state._tearDownTimer);
|
|
state._tearDownTimer = setTimeout(() => {
|
|
state._tearDownTimer = null;
|
|
if (!state.visible) tearDownPreviewWebGL(state);
|
|
}, WEBGL_TEARDOWN_DEBOUNCE_MS);
|
|
}
|
|
}
|
|
},
|
|
{ root: null, rootMargin: "120px", threshold: 0.01 }
|
|
);
|
|
io.observe(canvas);
|
|
state._io = io;
|
|
|
|
previews.push(state);
|
|
}
|
|
|
|
function clearPreviews() {
|
|
previews.forEach((preview) => {
|
|
tearDownPreviewWebGL(preview);
|
|
if (preview._resizeObserver) preview._resizeObserver.disconnect();
|
|
if (preview._io) preview._io.disconnect();
|
|
preview.card.remove();
|
|
});
|
|
previews.length = 0;
|
|
}
|
|
|
|
function closeDetail() {
|
|
detailViewEl.classList.remove("active");
|
|
detailViewEl.setAttribute("aria-hidden", "true");
|
|
if (!detailRuntime) return;
|
|
const { gl, program, vao, vbo, channelTextures = [], _detailResizeObserver } = detailRuntime;
|
|
if (_detailResizeObserver) _detailResizeObserver.disconnect();
|
|
gl.deleteProgram(program);
|
|
gl.deleteVertexArray(vao);
|
|
gl.deleteBuffer(vbo);
|
|
channelTextures.forEach((tex) => gl.deleteTexture(tex));
|
|
detailRuntime = null;
|
|
}
|
|
|
|
function openDetail(previewState) {
|
|
closeDetail();
|
|
const gl = detailCanvas.getContext("webgl2", GL_CONTEXT_OPTS);
|
|
if (!gl) return;
|
|
let program;
|
|
const detailCode = previewState.codeForRender || previewState.code;
|
|
try {
|
|
program = compileProgram(gl, buildFragmentShader(detailCode));
|
|
} catch (err) {
|
|
statsEl.textContent = `详情编译失败: ${String(err.message || err)}`;
|
|
return;
|
|
}
|
|
const { vao, vbo } = createQuad(gl);
|
|
const channelTextures = createDefaultChannelTextures(gl, 256);
|
|
const channelUniforms = [
|
|
gl.getUniformLocation(program, "iChannel0"),
|
|
gl.getUniformLocation(program, "iChannel1"),
|
|
gl.getUniformLocation(program, "iChannel2"),
|
|
gl.getUniformLocation(program, "iChannel3"),
|
|
];
|
|
detailRuntime = {
|
|
gl,
|
|
program,
|
|
vao,
|
|
vbo,
|
|
channelTextures,
|
|
channelUniforms,
|
|
uniforms: {
|
|
iResolution: gl.getUniformLocation(program, "iResolution"),
|
|
iTime: gl.getUniformLocation(program, "iTime"),
|
|
iTimeDelta: gl.getUniformLocation(program, "iTimeDelta"),
|
|
iFrame: gl.getUniformLocation(program, "iFrame"),
|
|
iMouse: gl.getUniformLocation(program, "iMouse"),
|
|
iDate: gl.getUniformLocation(program, "iDate"),
|
|
},
|
|
mouse: { x: 0, y: 0, downX: 0, downY: 0, down: false },
|
|
_layoutW: 0,
|
|
_layoutH: 0,
|
|
};
|
|
const dro = new ResizeObserver((entries) => {
|
|
for (const e of entries) {
|
|
if (e.target !== detailCanvas) continue;
|
|
const cr = e.contentRect;
|
|
detailRuntime._layoutW = cr.width;
|
|
detailRuntime._layoutH = cr.height;
|
|
}
|
|
});
|
|
dro.observe(detailCanvas);
|
|
detailRuntime._detailResizeObserver = dro;
|
|
|
|
detailTitleEl.textContent = previewState.name;
|
|
detailViewEl.classList.add("active");
|
|
detailViewEl.setAttribute("aria-hidden", "false");
|
|
scheduleRender();
|
|
}
|
|
|
|
function applySearch() {
|
|
const keyword = searchKeyword.trim().toLowerCase();
|
|
for (const preview of previews) {
|
|
preview.card.style.display = !keyword || preview.card.dataset.search.includes(keyword) ? "" : "none";
|
|
}
|
|
scheduleRender();
|
|
}
|
|
|
|
async function loadShaders() {
|
|
try {
|
|
const res = await fetch(`${API_BASE}?t=${Date.now()}`, { cache: "no-store" });
|
|
if (!res.ok) throw new Error("加载失败");
|
|
const shaders = await res.json();
|
|
const signature = JSON.stringify(
|
|
shaders.map((s) => ({ id: s.id, updatedAt: s.updatedAt || s.createdAt || "", name: s.name }))
|
|
);
|
|
if (signature !== lastSignature) {
|
|
lastSignature = signature;
|
|
clearPreviews();
|
|
shaders.forEach(createPreviewCard);
|
|
applySearch();
|
|
syncStats();
|
|
}
|
|
} catch (err) {
|
|
statsEl.textContent = `读取后端失败：${String(err.message || err)}`;
|
|
}
|
|
}
|
|
|
|
function syncStats() {
|
|
statsEl.textContent = `预览数量: ${previews.length} | 全局时间: ${elapsed.toFixed(2)}s | 状态: ${
|
|
paused ? "已暂停" : "运行中"
|
|
}`;
|
|
shaderCountEl.textContent = `${previews.length} shaders`;
|
|
}
|
|
|
|
function renderAll(ts) {
|
|
const dt = Math.min((ts - lastTs) / 1000, 0.05);
|
|
lastTs = ts;
|
|
if (!paused) {
|
|
elapsed += dt;
|
|
frame += 1;
|
|
}
|
|
if (Math.floor(elapsed) !== lastSec) {
|
|
lastSec = Math.floor(elapsed);
|
|
fps = fpsCounter;
|
|
fpsCounter = 0;
|
|
globalFpsEl.textContent = `FPS: ${fps}`;
|
|
} else {
|
|
fpsCounter += 1;
|
|
}
|
|
|
|
const detailOpen = !!detailRuntime;
|
|
|
|
for (const preview of previews) {
|
|
let localDt = 0;
|
|
if (!detailOpen) {
|
|
const now = performance.now();
|
|
localDt = Math.min((now - preview.lastTick) / 1000, 0.05);
|
|
preview.lastTick = now;
|
|
if (preview.isPointerOver && preview.isPlaying && !paused) {
|
|
preview.localTime += localDt;
|
|
preview.localFrame += 1;
|
|
}
|
|
}
|
|
|
|
if (
|
|
!detailOpen &&
|
|
preview.card.style.display !== "none" &&
|
|
preview.visible &&
|
|
!preview.gl &&
|
|
!preview.compileFailed
|
|
) {
|
|
ensurePreviewWebGL(preview);
|
|
}
|
|
|
|
if (detailOpen) continue;
|
|
if (preview.card.style.display === "none") continue;
|
|
if (preview.visible === false) continue;
|
|
if (!preview.gl) continue;
|
|
|
|
const isAnim = preview.isPointerOver;
|
|
if (!isAnim && preview._staticRendered && !preview._staticDirty) continue;
|
|
|
|
const { gl, canvas, program, vao, uniforms, mouse, channelTextures, channelUniforms } = preview;
|
|
if (!preview._layoutW || !preview._layoutH) {
|
|
const r = canvas.getBoundingClientRect();
|
|
preview._layoutW = r.width;
|
|
preview._layoutH = r.height;
|
|
}
|
|
const { w, h } = computePreviewBufferSize(preview._layoutW, preview._layoutH);
|
|
if (canvas.width !== w || canvas.height !== h) {
|
|
canvas.width = w;
|
|
canvas.height = h;
|
|
gl.viewport(0, 0, w, h);
|
|
if (!isAnim) preview._staticDirty = true;
|
|
}
|
|
gl.useProgram(program);
|
|
bindChannelTextures(gl, channelUniforms, channelTextures);
|
|
gl.uniform3f(uniforms.iResolution, canvas.width, canvas.height, 1);
|
|
if (isAnim) {
|
|
gl.uniform1f(uniforms.iTime, preview.localTime);
|
|
gl.uniform1f(uniforms.iTimeDelta, preview.isPlaying && !paused ? localDt : 0);
|
|
gl.uniform1i(uniforms.iFrame, preview.localFrame);
|
|
} else {
|
|
gl.uniform1f(uniforms.iTime, 0);
|
|
gl.uniform1f(uniforms.iTimeDelta, 0);
|
|
gl.uniform1i(uniforms.iFrame, 0);
|
|
}
|
|
setIDateUniform(gl, uniforms.iDate);
|
|
gl.uniform4f(
|
|
uniforms.iMouse,
|
|
mouse.x,
|
|
mouse.y,
|
|
mouse.down ? mouse.downX : -mouse.downX,
|
|
mouse.down ? mouse.downY : -mouse.downY
|
|
);
|
|
gl.bindVertexArray(vao);
|
|
gl.drawArrays(gl.TRIANGLES, 0, 6);
|
|
gl.bindVertexArray(null);
|
|
preview._glTouchSeq = ++gridGlTouchCounter;
|
|
if (!isAnim) {
|
|
preview._staticRendered = true;
|
|
preview._staticDirty = false;
|
|
}
|
|
}
|
|
|
|
if (detailRuntime) {
|
|
const { gl, program, vao, uniforms, mouse, channelTextures, channelUniforms } = detailRuntime;
|
|
const lw =
|
|
detailRuntime._layoutW > 0 ? detailRuntime._layoutW : detailCanvas.clientWidth || 1;
|
|
const lh =
|
|
detailRuntime._layoutH > 0 ? detailRuntime._layoutH : detailCanvas.clientHeight || 1;
|
|
const { w, h } = computeDetailBufferSize(lw, lh);
|
|
if (detailCanvas.width !== w || detailCanvas.height !== h) {
|
|
detailCanvas.width = w;
|
|
detailCanvas.height = h;
|
|
gl.viewport(0, 0, w, h);
|
|
}
|
|
gl.useProgram(program);
|
|
bindChannelTextures(gl, channelUniforms, channelTextures);
|
|
gl.uniform3f(uniforms.iResolution, detailCanvas.width, detailCanvas.height, 1);
|
|
gl.uniform1f(uniforms.iTime, elapsed);
|
|
gl.uniform1f(uniforms.iTimeDelta, dt);
|
|
gl.uniform1i(uniforms.iFrame, frame);
|
|
setIDateUniform(gl, uniforms.iDate);
|
|
gl.uniform4f(
|
|
uniforms.iMouse,
|
|
mouse.x,
|
|
mouse.y,
|
|
mouse.down ? mouse.downX : -mouse.downX,
|
|
mouse.down ? mouse.downY : -mouse.downY
|
|
);
|
|
gl.bindVertexArray(vao);
|
|
gl.drawArrays(gl.TRIANGLES, 0, 6);
|
|
gl.bindVertexArray(null);
|
|
if (Math.floor(elapsed) !== detailLastSec) {
|
|
detailLastSec = Math.floor(elapsed);
|
|
detailFps = detailFpsCounter;
|
|
detailFpsCounter = 0;
|
|
detailFpsEl.textContent = `FPS: ${detailFps}`;
|
|
} else {
|
|
detailFpsCounter += 1;
|
|
}
|
|
}
|
|
|
|
if (shouldScheduleNextFrame()) scheduleRender();
|
|
}
|
|
|
|
pauseBtn.addEventListener("click", () => {
|
|
paused = !paused;
|
|
pauseBtn.textContent = paused ? "全局继续" : "全局暂停";
|
|
syncStats();
|
|
scheduleRender();
|
|
});
|
|
resetBtn.addEventListener("click", () => {
|
|
elapsed = 0;
|
|
frame = 0;
|
|
fpsCounter = 0;
|
|
lastSec = 0;
|
|
detailLastSec = 0;
|
|
detailFpsCounter = 0;
|
|
syncStats();
|
|
scheduleRender();
|
|
});
|
|
backBtn.addEventListener("click", () => {
|
|
closeDetail();
|
|
scheduleRender();
|
|
});
|
|
detailCanvas.addEventListener("mousemove", (event) => {
|
|
if (!detailRuntime) return;
|
|
const rect = detailCanvas.getBoundingClientRect();
|
|
detailRuntime.mouse.x = ((event.clientX - rect.left) / rect.width) * detailCanvas.width;
|
|
detailRuntime.mouse.y = ((rect.bottom - event.clientY) / rect.height) * detailCanvas.height;
|
|
});
|
|
detailCanvas.addEventListener("mousedown", () => {
|
|
if (!detailRuntime) return;
|
|
detailRuntime.mouse.down = true;
|
|
detailRuntime.mouse.downX = detailRuntime.mouse.x;
|
|
detailRuntime.mouse.downY = detailRuntime.mouse.y;
|
|
});
|
|
window.addEventListener("mouseup", () => {
|
|
if (!detailRuntime) return;
|
|
detailRuntime.mouse.down = false;
|
|
});
|
|
searchInput.addEventListener("input", (event) => {
|
|
searchKeyword = event.target.value || "";
|
|
applySearch();
|
|
});
|
|
|
|
loadShaders();
|
|
setInterval(loadShaders, 3000);
|
|
scheduleRender();
|