1404 lines
54 KiB
JavaScript
1404 lines
54 KiB
JavaScript
(() => {
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const year = document.querySelector("#year");
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if (year) year.textContent = String(new Date().getFullYear());
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const navigation = document.querySelector("#site-navigation");
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function setMetaContent(selector, content) {
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const element = document.querySelector(selector);
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if (element && content) element.setAttribute("content", content);
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}
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function applySiteMetadata(config) {
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const site = config && config.site;
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if (!site || typeof site.name !== "string" || typeof site.url !== "string") return;
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const homepageTitle = document.querySelector('meta[property="og:title"]');
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if (!homepageTitle) return;
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const name = site.name.trim();
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const description = typeof site.description === "string" ? site.description.trim() : "";
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let siteUrl;
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try {
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siteUrl = new URL(site.url.trim());
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if (siteUrl.protocol !== "https:" && siteUrl.protocol !== "http:") return;
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} catch (error) {
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return;
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}
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if (!name || !siteUrl) return;
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siteUrl.pathname = siteUrl.pathname.replace(/\/+$/, "") + "/";
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siteUrl.search = "";
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siteUrl.hash = "";
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const canonicalUrl = siteUrl.href;
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const imageUrl = new URL("assets/images/avatar.jpg", canonicalUrl).href;
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document.title = name;
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setMetaContent('meta[name="description"]', description);
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setMetaContent('meta[property="og:site_name"]', name);
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homepageTitle.setAttribute("content", name);
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setMetaContent('meta[property="og:description"]', description);
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setMetaContent('meta[property="og:url"]', canonicalUrl);
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setMetaContent('meta[property="og:image"]', imageUrl);
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const canonical = document.querySelector('link[rel="canonical"]');
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if (canonical) canonical.setAttribute("href", canonicalUrl);
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}
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function renderConfiguredLinks(config) {
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if (!navigation || !config || !Array.isArray(config.links)) return;
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const fragment = document.createDocumentFragment();
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config.links.forEach((item) => {
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if (!item || typeof item.name !== "string" || typeof item.url !== "string") return;
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const name = item.name.trim();
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const url = item.url.trim();
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if (!name || !/^https?:\/\//i.test(url)) return;
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const link = document.createElement("a");
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link.className = "destination";
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link.href = url;
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link.target = "_blank";
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link.rel = "noopener noreferrer";
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link.title = "在新标签页打开";
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link.setAttribute("aria-label", `${name}（新标签页打开）`);
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const label = document.createElement("span");
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label.className = "destination-label";
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label.textContent = name;
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const icon = document.createElement("span");
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icon.className = "external-icon";
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icon.setAttribute("aria-hidden", "true");
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icon.textContent = "↗";
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link.append(label, icon);
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fragment.append(link);
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});
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navigation.replaceChildren(fragment);
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}
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if (navigation && window.XMLHttpRequest) {
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try {
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const request = new XMLHttpRequest();
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request.open("GET", "assets/js/site-config.json", true);
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request.responseType = "json";
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request.timeout = 3000;
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request.onload = function() {
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if (request.status >= 200 && request.status < 300) {
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applySiteMetadata(request.response);
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renderConfiguredLinks(request.response);
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}
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};
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request.send();
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} catch (error) {
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// Keep the links embedded in the HTML when local-file or network access fails.
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}
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}
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const shaderSources = {
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"sakura_point_vsh": "uniform mat4 uProjection;\nuniform mat4 uModelview;\nuniform vec3 uResolution;\nuniform vec3 uOffset;\nuniform vec3 uDOF; //x:focus distance, y:focus radius, z:max radius\nuniform vec3 uFade; //x:start distance, y:half distance, z:near fade start\n\n\nattribute vec3 aPosition;\nattribute vec3 aEuler;\nattribute vec2 aMisc; //x:size, y:fade\n\n\nvarying vec3 pposition;\nvarying float psize;\nvarying float palpha;\nvarying float pdist;\n\n\n//varying mat3 rotMat;\nvarying vec3 normX;\nvarying vec3 normY;\nvarying vec3 normZ;\nvarying vec3 normal;\n\n\nvarying float diffuse;\nvarying float specular;\nvarying float rstop;\nvarying float distancefade;\n\n\nvoid main(void) {\n // Projection is based on vertical angle\n vec4 pos = uModelview * vec4(aPosition + uOffset, 1.0);\n gl_Position = uProjection * pos;\n gl_PointSize = aMisc.x * uProjection[1][1] / -pos.z * uResolution.y * 0.5;\n \n pposition = pos.xyz;\n psize = aMisc.x;\n pdist = length(pos.xyz);\n palpha = smoothstep(0.0, 1.0, (pdist - 0.1) / uFade.z);\n \n vec3 elrsn = sin(aEuler);\n vec3 elrcs = cos(aEuler);\n mat3 rotx = mat3(\n 1.0, 0.0, 0.0,\n 0.0, elrcs.x, elrsn.x,\n 0.0, -elrsn.x, elrcs.x\n );\n mat3 roty = mat3(\n elrcs.y, 0.0, -elrsn.y,\n 0.0, 1.0, 0.0,\n elrsn.y, 0.0, elrcs.y\n );\n mat3 rotz = mat3(\n elrcs.z, elrsn.z, 0.0, \n -elrsn.z, elrcs.z, 0.0,\n 0.0, 0.0, 1.0\n );\n mat3 rotmat = rotx * roty * rotz;\n normal = rotmat[2];\n \n mat3 trrotm = mat3(\n rotmat[0][0], rotmat[1][0], rotmat[2][0],\n rotmat[0][1], rotmat[1][1], rotmat[2][1],\n rotmat[0][2], rotmat[1][2], rotmat[2][2]\n );\n normX = trrotm[0];\n normY = trrotm[1];\n normZ = trrotm[2];\n \n const vec3 lit = vec3(0.6917144638660746, 0.6917144638660746, -0.20751433915982237);\n \n float tmpdfs = dot(lit, normal);\n if(tmpdfs < 0.0) {\n normal = -normal;\n tmpdfs = dot(lit, normal);\n }\n diffuse = 0.4 + tmpdfs;\n \n vec3 eyev = normalize(-pos.xyz);\n if(dot(eyev, normal) > 0.0) {\n vec3 hv = normalize(eyev + lit);\n specular = pow(max(dot(hv, normal), 0.0), 20.0);\n }\n else {\n specular = 0.0;\n }\n \n rstop = clamp((abs(pdist - uDOF.x) - uDOF.y) / uDOF.z, 0.0, 1.0);\n rstop = pow(rstop, 0.5);\n //-0.69315 = ln(0.5)\n distancefade = min(1.0, exp((uFade.x - pdist) * 0.69315 / uFade.y));\n}",
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"sakura_point_fsh": "#ifdef GL_ES\n//precision mediump float;\nprecision highp float;\n#endif\n\n\nuniform vec3 uDOF; //x:focus distance, y:focus radius, z:max radius\nuniform vec3 uFade; //x:start distance, y:half distance, z:near fade start\n\n\nconst vec3 fadeCol = vec3(0.08, 0.03, 0.06);\n\n\nvarying vec3 pposition;\nvarying float psize;\nvarying float palpha;\nvarying float pdist;\n\n\n//varying mat3 rotMat;\nvarying vec3 normX;\nvarying vec3 normY;\nvarying vec3 normZ;\nvarying vec3 normal;\n\n\nvarying float diffuse;\nvarying float specular;\nvarying float rstop;\nvarying float distancefade;\n\n\nfloat ellipse(vec2 p, vec2 o, vec2 r) {\n vec2 lp = (p - o) / r;\n return length(lp) - 1.0;\n}\n\n\nvoid main(void) {\n vec3 p = vec3(gl_PointCoord - vec2(0.5, 0.5), 0.0) * 2.0;\n vec3 d = vec3(0.0, 0.0, -1.0);\n float nd = normZ.z; //dot(-normZ, d);\n if(abs(nd) < 0.0001) discard;\n \n float np = dot(normZ, p);\n vec3 tp = p + d * np / nd;\n vec2 coord = vec2(dot(normX, tp), dot(normY, tp));\n \n //angle = 15 degree\n const float flwrsn = 0.258819045102521;\n const float flwrcs = 0.965925826289068;\n mat2 flwrm = mat2(flwrcs, -flwrsn, flwrsn, flwrcs);\n vec2 flwrp = vec2(abs(coord.x), coord.y) * flwrm;\n \n float r;\n if(flwrp.x < 0.0) {\n r = ellipse(flwrp, vec2(0.065, 0.024) * 0.5, vec2(0.36, 0.96) * 0.5);\n }\n else {\n r = ellipse(flwrp, vec2(0.065, 0.024) * 0.5, vec2(0.58, 0.96) * 0.5);\n }\n \n if(r > rstop) discard;\n \n vec3 col = mix(vec3(1.0, 0.8, 0.75), vec3(1.0, 0.9, 0.87), r);\n float grady = mix(0.0, 1.0, pow(coord.y * 0.5 + 0.5, 0.35));\n col *= vec3(1.0, grady, grady);\n col *= mix(0.8, 1.0, pow(abs(coord.x), 0.3));\n col = col * diffuse + specular;\n \n col = mix(fadeCol, col, distancefade);\n \n float alpha = (rstop > 0.001)? (0.5 - r / (rstop * 2.0)) : 1.0;\n alpha = smoothstep(0.0, 1.0, alpha) * palpha;\n \n gl_FragColor = vec4(col * 0.5, alpha);\n}",
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"fx_common_vsh": "uniform vec3 uResolution;\nattribute vec2 aPosition;\n\n\nvarying vec2 texCoord;\nvarying vec2 screenCoord;\n\n\nvoid main(void) {\n gl_Position = vec4(aPosition, 0.0, 1.0);\n texCoord = aPosition.xy * 0.5 + vec2(0.5, 0.5);\n screenCoord = aPosition.xy * vec2(uResolution.z, 1.0);\n}",
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"bg_fsh": "#ifdef GL_ES\n//precision mediump float;\nprecision highp float;\n#endif\n\n\nuniform vec2 uTimes;\n\n\nvarying vec2 texCoord;\nvarying vec2 screenCoord;\n\n\nvoid main(void) {\n vec3 col;\n float c;\n vec2 tmpv = texCoord * vec2(0.8, 1.0) - vec2(0.95, 1.0);\n c = exp(-pow(length(tmpv) * 1.8, 2.0));\n col = mix(vec3(0.02, 0.0, 0.03), vec3(0.96, 0.98, 1.0) * 1.5, c);\n gl_FragColor = vec4(col * 0.5, 1.0);\n}",
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"fx_brightbuf_fsh": "#ifdef GL_ES\n//precision mediump float;\nprecision highp float;\n#endif\nuniform sampler2D uSrc;\nuniform vec2 uDelta;\n\n\nvarying vec2 texCoord;\nvarying vec2 screenCoord;\n\n\nvoid main(void) {\n vec4 col = texture2D(uSrc, texCoord);\n gl_FragColor = vec4(col.rgb * 2.0 - vec3(0.5), 1.0);\n}",
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"fx_dirblur_r4_fsh": "#ifdef GL_ES\n//precision mediump float;\nprecision highp float;\n#endif\nuniform sampler2D uSrc;\nuniform vec2 uDelta;\nuniform vec4 uBlurDir; //dir(x, y), stride(z, w)\n\n\nvarying vec2 texCoord;\nvarying vec2 screenCoord;\n\n\nvoid main(void) {\n vec4 col = texture2D(uSrc, texCoord);\n col = col + texture2D(uSrc, texCoord + uBlurDir.xy * uDelta);\n col = col + texture2D(uSrc, texCoord - uBlurDir.xy * uDelta);\n col = col + texture2D(uSrc, texCoord + (uBlurDir.xy + uBlurDir.zw) * uDelta);\n col = col + texture2D(uSrc, texCoord - (uBlurDir.xy + uBlurDir.zw) * uDelta);\n gl_FragColor = col / 5.0;\n}",
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"fx_common_fsh": "#ifdef GL_ES\n//precision mediump float;\nprecision highp float;\n#endif\nuniform sampler2D uSrc;\nuniform vec2 uDelta;\n\n\nvarying vec2 texCoord;\nvarying vec2 screenCoord;\n\n\nvoid main(void) {\n gl_FragColor = texture2D(uSrc, texCoord);\n}",
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"pp_final_vsh": "uniform vec3 uResolution;\nattribute vec2 aPosition;\nvarying vec2 texCoord;\nvarying vec2 screenCoord;\nvoid main(void) {\n gl_Position = vec4(aPosition, 0.0, 1.0);\n texCoord = aPosition.xy * 0.5 + vec2(0.5, 0.5);\n screenCoord = aPosition.xy * vec2(uResolution.z, 1.0);\n}",
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"pp_final_fsh": "#ifdef GL_ES\n//precision mediump float;\nprecision highp float;\n#endif\nuniform sampler2D uSrc;\nuniform sampler2D uBloom;\nuniform vec2 uDelta;\nvarying vec2 texCoord;\nvarying vec2 screenCoord;\nvoid main(void) {\n vec4 srccol = texture2D(uSrc, texCoord) * 2.0;\n vec4 bloomcol = texture2D(uBloom, texCoord);\n vec4 col;\n col = srccol + bloomcol * (vec4(1.0) + srccol);\n col *= smoothstep(1.0, 0.0, pow(length((texCoord - vec2(0.5)) * 2.0), 1.2) * 0.5);\n col = pow(col, vec4(0.45454545454545)); //(1.0 / 2.2)\n \n gl_FragColor = vec4(col.rgb, 1.0);\n gl_FragColor.a = 1.0;\n}",
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};
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// WebGL ES leaves smoothstep with reversed edges undefined. Keep the
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// original vignette curve while expressing it with a defined operation.
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shaderSources["pp_final_fsh"] = shaderSources["pp_final_fsh"].replace(
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"smoothstep(1.0, 0.0, pow(length((texCoord - vec2(0.5)) * 2.0), 1.2) * 0.5)",
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"1.0 - smoothstep(0.0, 1.0, pow(length((texCoord - vec2(0.5)) * 2.0), 1.2) * 0.5)"
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);
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// Utilities
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var Vector3 = {};
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var Matrix44 = {};
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Vector3.create = function(x, y, z) {
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return {'x':x, 'y':y, 'z':z};
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};
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Vector3.dot = function (v0, v1) {
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return v0.x * v1.x + v0.y * v1.y + v0.z * v1.z;
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};
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Vector3.cross = function (v, v0, v1) {
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v.x = v0.y * v1.z - v0.z * v1.y;
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v.y = v0.z * v1.x - v0.x * v1.z;
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v.z = v0.x * v1.y - v0.y * v1.x;
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};
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Vector3.normalize = function (v) {
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var l = v.x * v.x + v.y * v.y + v.z * v.z;
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if(l > 0.00001) {
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l = 1.0 / Math.sqrt(l);
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v.x *= l;
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v.y *= l;
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v.z *= l;
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}
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};
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Vector3.arrayForm = function(v) {
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if(v.array) {
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v.array[0] = v.x;
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v.array[1] = v.y;
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v.array[2] = v.z;
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}
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else {
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v.array = new Float32Array([v.x, v.y, v.z]);
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}
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return v.array;
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};
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Matrix44.createIdentity = function () {
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return new Float32Array([1.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0, 0.0, 0.0, 0.0, 1.0]);
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};
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Matrix44.loadProjection = function (m, aspect, vdeg, near, far) {
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var h = near * Math.tan(vdeg * Math.PI / 180.0 * 0.5) * 2.0;
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var w = h * aspect;
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m[0] = 2.0 * near / w;
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m[1] = 0.0;
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m[2] = 0.0;
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m[3] = 0.0;
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m[4] = 0.0;
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m[5] = 2.0 * near / h;
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m[6] = 0.0;
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m[7] = 0.0;
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m[8] = 0.0;
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m[9] = 0.0;
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m[10] = -(far + near) / (far - near);
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m[11] = -1.0;
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m[12] = 0.0;
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m[13] = 0.0;
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m[14] = -2.0 * far * near / (far - near);
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m[15] = 0.0;
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};
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Matrix44.loadLookAt = function (m, vpos, vlook, vup) {
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var frontv = Vector3.create(vpos.x - vlook.x, vpos.y - vlook.y, vpos.z - vlook.z);
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Vector3.normalize(frontv);
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var sidev = Vector3.create(1.0, 0.0, 0.0);
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Vector3.cross(sidev, vup, frontv);
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Vector3.normalize(sidev);
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var topv = Vector3.create(1.0, 0.0, 0.0);
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Vector3.cross(topv, frontv, sidev);
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Vector3.normalize(topv);
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m[0] = sidev.x;
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m[1] = topv.x;
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m[2] = frontv.x;
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m[3] = 0.0;
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m[4] = sidev.y;
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m[5] = topv.y;
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m[6] = frontv.y;
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m[7] = 0.0;
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m[8] = sidev.z;
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m[9] = topv.z;
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m[10] = frontv.z;
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m[11] = 0.0;
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m[12] = -(vpos.x * m[0] + vpos.y * m[4] + vpos.z * m[8]);
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m[13] = -(vpos.x * m[1] + vpos.y * m[5] + vpos.z * m[9]);
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m[14] = -(vpos.x * m[2] + vpos.y * m[6] + vpos.z * m[10]);
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m[15] = 1.0;
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};
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//
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var timeInfo = {
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'start':0, 'prev':0, // performance.now() milliseconds
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'delta':0, 'elapsed':0 // Number(sec)
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};
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function currentTime() {
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return (window.performance && window.performance.now) ? window.performance.now() : Date.now();
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}
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//
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var gl;
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var renderSpec = {
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'width':0,
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'height':0,
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'aspect':1,
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'array':new Float32Array(3),
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'halfWidth':0,
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'halfHeight':0,
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'halfArray':new Float32Array(3),
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'pixelRatio':1
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// and some render targets. see setViewport()
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};
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renderSpec.setSize = function(w, h) {
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renderSpec.width = w;
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renderSpec.height = h;
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renderSpec.aspect = renderSpec.width / Math.max(1, renderSpec.height);
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renderSpec.array[0] = renderSpec.width;
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renderSpec.array[1] = renderSpec.height;
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renderSpec.array[2] = renderSpec.aspect;
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renderSpec.halfWidth = Math.max(1, Math.floor(w / 2));
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renderSpec.halfHeight = Math.max(1, Math.floor(h / 2));
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renderSpec.halfArray[0] = renderSpec.halfWidth;
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renderSpec.halfArray[1] = renderSpec.halfHeight;
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renderSpec.halfArray[2] = renderSpec.halfWidth / renderSpec.halfHeight;
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};
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function deleteRenderTarget(rt) {
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if(!rt) return;
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if(rt.frameBuffer) gl.deleteFramebuffer(rt.frameBuffer);
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if(rt.renderBuffer) gl.deleteRenderbuffer(rt.renderBuffer);
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if(rt.texture) gl.deleteTexture(rt.texture);
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rt.frameBuffer = null;
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rt.renderBuffer = null;
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rt.texture = null;
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}
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function createRenderTarget(w, h, withDepth) {
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w = Math.max(1, Math.floor(w));
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h = Math.max(1, Math.floor(h));
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var ret = {
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'width':w,
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'height':h,
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'hasDepth':!!withDepth,
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'sizeArray':new Float32Array([w, h, w / h]),
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'dtxArray':new Float32Array([1.0 / w, 1.0 / h])
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};
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for(var errorIndex = 0; errorIndex < 16; errorIndex++) {
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if(gl.getError() === gl.NO_ERROR) break;
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}
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ret.frameBuffer = gl.createFramebuffer();
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ret.texture = gl.createTexture();
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if(!ret.frameBuffer || !ret.texture) {
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deleteRenderTarget(ret);
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throw new Error("Unable to allocate WebGL render target.");
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}
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try {
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gl.bindTexture(gl.TEXTURE_2D, ret.texture);
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gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, w, h, 0, gl.RGBA, gl.UNSIGNED_BYTE, null);
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gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
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gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
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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_MIN_FILTER, gl.LINEAR);
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gl.bindFramebuffer(gl.FRAMEBUFFER, ret.frameBuffer);
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gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, ret.texture, 0);
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if(ret.hasDepth) {
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ret.renderBuffer = gl.createRenderbuffer();
|
|
if(!ret.renderBuffer) throw new Error("Unable to allocate WebGL depth buffer.");
|
|
gl.bindRenderbuffer(gl.RENDERBUFFER, ret.renderBuffer);
|
|
gl.renderbufferStorage(gl.RENDERBUFFER, gl.DEPTH_COMPONENT16, w, h);
|
|
gl.framebufferRenderbuffer(gl.FRAMEBUFFER, gl.DEPTH_ATTACHMENT, gl.RENDERBUFFER, ret.renderBuffer);
|
|
}
|
|
|
|
var allocationError = gl.getError();
|
|
if(allocationError !== gl.NO_ERROR) {
|
|
throw new Error("WebGL render target allocation failed with error 0x" + allocationError.toString(16) + ".");
|
|
}
|
|
if(gl.checkFramebufferStatus(gl.FRAMEBUFFER) !== gl.FRAMEBUFFER_COMPLETE) {
|
|
throw new Error("Incomplete WebGL framebuffer.");
|
|
}
|
|
|
|
gl.bindTexture(gl.TEXTURE_2D, null);
|
|
gl.bindRenderbuffer(gl.RENDERBUFFER, null);
|
|
gl.bindFramebuffer(gl.FRAMEBUFFER, null);
|
|
return ret;
|
|
} catch(error) {
|
|
unbindRenderTargetState();
|
|
deleteRenderTarget(ret);
|
|
throw error;
|
|
}
|
|
}
|
|
|
|
|
|
function deleteRenderTargetSet(targets) {
|
|
if(!targets) return;
|
|
deleteRenderTarget(targets.mainRT);
|
|
deleteRenderTarget(targets.wHalfRT0);
|
|
deleteRenderTarget(targets.wHalfRT1);
|
|
}
|
|
|
|
|
|
function unbindRenderTargetState() {
|
|
// The previous frame can leave these textures bound while a resize is
|
|
// being committed. Unbind both sampling units before deleting them.
|
|
gl.activeTexture(gl.TEXTURE0);
|
|
gl.bindTexture(gl.TEXTURE_2D, null);
|
|
gl.activeTexture(gl.TEXTURE1);
|
|
gl.bindTexture(gl.TEXTURE_2D, null);
|
|
gl.activeTexture(gl.TEXTURE0);
|
|
gl.bindRenderbuffer(gl.RENDERBUFFER, null);
|
|
gl.bindFramebuffer(gl.FRAMEBUFFER, null);
|
|
}
|
|
|
|
|
|
function estimateRenderTargetSetBytes(width, height) {
|
|
var halfWidth = Math.max(1, Math.floor(width / 2));
|
|
var halfHeight = Math.max(1, Math.floor(height / 2));
|
|
// RGBA8 main color + DEPTH_COMPONENT16 + two RGBA8 half targets, with
|
|
// headroom for driver alignment and internal depth-buffer padding.
|
|
var formatBytes = width * height * 6 + halfWidth * halfHeight * 8;
|
|
return Math.ceil(formatBytes * 1.25);
|
|
}
|
|
|
|
|
|
function createRenderTargetSet(width, height) {
|
|
var halfWidth = Math.max(1, Math.floor(width / 2));
|
|
var halfHeight = Math.max(1, Math.floor(height / 2));
|
|
var targets = {};
|
|
try {
|
|
targets.mainRT = createRenderTarget(width, height, true);
|
|
targets.wHalfRT0 = createRenderTarget(halfWidth, halfHeight, false);
|
|
targets.wHalfRT1 = createRenderTarget(halfWidth, halfHeight, false);
|
|
return targets;
|
|
} catch(error) {
|
|
unbindRenderTargetState();
|
|
deleteRenderTargetSet(targets);
|
|
throw error;
|
|
}
|
|
}
|
|
|
|
|
|
function compileShader(shtype, shsrc) {
|
|
var retsh = gl.createShader(shtype);
|
|
if(!retsh) {
|
|
console.error("Unable to create WebGL shader.");
|
|
return null;
|
|
}
|
|
if(shtype === gl.FRAGMENT_SHADER && gl.getShaderPrecisionFormat) {
|
|
try {
|
|
var highp = gl.getShaderPrecisionFormat(gl.FRAGMENT_SHADER, gl.HIGH_FLOAT);
|
|
if(!highp || highp.precision === 0) {
|
|
shsrc = shsrc.replace(/precision\s+highp\s+float\s*;/g, "precision mediump float;");
|
|
}
|
|
} catch(precisionError) {
|
|
shsrc = shsrc.replace(/precision\s+highp\s+float\s*;/g, "precision mediump float;");
|
|
}
|
|
}
|
|
|
|
gl.shaderSource(retsh, shsrc);
|
|
gl.compileShader(retsh);
|
|
|
|
if(!gl.getShaderParameter(retsh, gl.COMPILE_STATUS)) {
|
|
var errlog = gl.getShaderInfoLog(retsh);
|
|
gl.deleteShader(retsh);
|
|
console.error(errlog);
|
|
return null;
|
|
}
|
|
return retsh;
|
|
}
|
|
|
|
|
|
function createShader(vtxsrc, frgsrc, uniformlist, attrlist) {
|
|
var vsh = compileShader(gl.VERTEX_SHADER, vtxsrc);
|
|
var fsh = compileShader(gl.FRAGMENT_SHADER, frgsrc);
|
|
|
|
if(vsh == null || fsh == null) {
|
|
if(vsh) gl.deleteShader(vsh);
|
|
if(fsh) gl.deleteShader(fsh);
|
|
return null;
|
|
}
|
|
|
|
var prog = gl.createProgram();
|
|
if(!prog) {
|
|
gl.deleteShader(vsh);
|
|
gl.deleteShader(fsh);
|
|
return null;
|
|
}
|
|
gl.attachShader(prog, vsh);
|
|
gl.attachShader(prog, fsh);
|
|
|
|
gl.deleteShader(vsh);
|
|
gl.deleteShader(fsh);
|
|
|
|
gl.linkProgram(prog);
|
|
if (!gl.getProgramParameter(prog, gl.LINK_STATUS)) {
|
|
var errlog = gl.getProgramInfoLog(prog);
|
|
console.error(errlog);
|
|
gl.deleteProgram(prog);
|
|
return null;
|
|
}
|
|
|
|
if(uniformlist) {
|
|
prog.uniforms = {};
|
|
for(var i = 0; i < uniformlist.length; i++) {
|
|
prog.uniforms[uniformlist[i]] = gl.getUniformLocation(prog, uniformlist[i]);
|
|
}
|
|
}
|
|
|
|
if(attrlist) {
|
|
prog.attributes = {};
|
|
for(var i = 0; i < attrlist.length; i++) {
|
|
var attr = attrlist[i];
|
|
prog.attributes[attr] = gl.getAttribLocation(prog, attr);
|
|
}
|
|
}
|
|
|
|
return prog;
|
|
}
|
|
|
|
|
|
function useShader(prog) {
|
|
if(!prog) return false;
|
|
gl.useProgram(prog);
|
|
for(var attr in prog.attributes) {
|
|
if(prog.attributes[attr] >= 0) gl.enableVertexAttribArray(prog.attributes[attr]);
|
|
}
|
|
return true;
|
|
}
|
|
|
|
|
|
function unuseShader(prog) {
|
|
if(!prog) return;
|
|
for(var attr in prog.attributes) {
|
|
if(prog.attributes[attr] >= 0) gl.disableVertexAttribArray(prog.attributes[attr]);
|
|
}
|
|
gl.useProgram(null);
|
|
}
|
|
|
|
|
|
/////
|
|
var projection = {
|
|
'angle':60,
|
|
'nearfar':new Float32Array([0.1, 100.0]),
|
|
'matrix':Matrix44.createIdentity()
|
|
};
|
|
var camera = {
|
|
'position':Vector3.create(0, 0, 100),
|
|
'lookat':Vector3.create(0, 0, 0),
|
|
'up':Vector3.create(0, 1, 0),
|
|
'dof':Vector3.create(10.0, 4.0, 8.0),
|
|
'matrix':Matrix44.createIdentity()
|
|
};
|
|
|
|
|
|
var pointFlower = {};
|
|
var meshFlower = {};
|
|
var sceneStandBy = false;
|
|
|
|
|
|
var BlossomParticle = function () {
|
|
this.velocity = new Array(3);
|
|
this.rotation = new Array(3);
|
|
this.position = new Array(3);
|
|
this.euler = new Array(3);
|
|
this.size = 1.0;
|
|
this.alpha = 1.0;
|
|
this.zkey = 0.0;
|
|
};
|
|
|
|
|
|
BlossomParticle.prototype.setVelocity = function (vx, vy, vz) {
|
|
this.velocity[0] = vx;
|
|
this.velocity[1] = vy;
|
|
this.velocity[2] = vz;
|
|
};
|
|
|
|
|
|
BlossomParticle.prototype.setRotation = function (rx, ry, rz) {
|
|
this.rotation[0] = rx;
|
|
this.rotation[1] = ry;
|
|
this.rotation[2] = rz;
|
|
};
|
|
|
|
|
|
BlossomParticle.prototype.setPosition = function (nx, ny, nz) {
|
|
this.position[0] = nx;
|
|
this.position[1] = ny;
|
|
this.position[2] = nz;
|
|
};
|
|
|
|
|
|
BlossomParticle.prototype.setEulerAngles = function (rx, ry, rz) {
|
|
this.euler[0] = rx;
|
|
this.euler[1] = ry;
|
|
this.euler[2] = rz;
|
|
};
|
|
|
|
|
|
BlossomParticle.prototype.setSize = function (s) {
|
|
this.size = s;
|
|
};
|
|
|
|
|
|
BlossomParticle.prototype.update = function (dt, et) {
|
|
this.position[0] += this.velocity[0] * dt;
|
|
this.position[1] += this.velocity[1] * dt;
|
|
this.position[2] += this.velocity[2] * dt;
|
|
|
|
this.euler[0] += this.rotation[0] * dt;
|
|
this.euler[1] += this.rotation[1] * dt;
|
|
this.euler[2] += this.rotation[2] * dt;
|
|
};
|
|
|
|
|
|
function createPointFlowers() {
|
|
// get point sizes
|
|
var prm = gl.getParameter(gl.ALIASED_POINT_SIZE_RANGE);
|
|
renderSpec.pointSize = {'min':prm[0], 'max':prm[1]};
|
|
|
|
var vtxsrc = shaderSources["sakura_point_vsh"];
|
|
var frgsrc = shaderSources["sakura_point_fsh"];
|
|
|
|
pointFlower.program = createShader(
|
|
vtxsrc, frgsrc,
|
|
['uProjection', 'uModelview', 'uResolution', 'uOffset', 'uDOF', 'uFade'],
|
|
['aPosition', 'aEuler', 'aMisc']
|
|
);
|
|
if(!pointFlower.program) throw new Error("Unable to create Sakura shader program.");
|
|
|
|
useShader(pointFlower.program);
|
|
pointFlower.offset = new Float32Array([0.0, 0.0, 0.0]);
|
|
pointFlower.fader = Vector3.create(0.0, 10.0, 0.0);
|
|
|
|
// paramerters: velocity[3], rotate[3]
|
|
pointFlower.numFlowers = 1600;
|
|
pointFlower.particles = new Array(pointFlower.numFlowers);
|
|
pointFlower.initialized = false;
|
|
// vertex attributes {position[3], euler_xyz[3], size[1]}
|
|
pointFlower.dataArray = new Float32Array(pointFlower.numFlowers * (3 + 3 + 2));
|
|
pointFlower.positionArrayOffset = 0;
|
|
pointFlower.eulerArrayOffset = pointFlower.numFlowers * 3;
|
|
pointFlower.miscArrayOffset = pointFlower.numFlowers * 6;
|
|
|
|
pointFlower.buffer = gl.createBuffer();
|
|
gl.bindBuffer(gl.ARRAY_BUFFER, pointFlower.buffer);
|
|
gl.bufferData(gl.ARRAY_BUFFER, pointFlower.dataArray, gl.DYNAMIC_DRAW);
|
|
gl.bindBuffer(gl.ARRAY_BUFFER, null);
|
|
|
|
unuseShader(pointFlower.program);
|
|
|
|
for(var i = 0; i < pointFlower.numFlowers; i++) {
|
|
pointFlower.particles[i] = new BlossomParticle();
|
|
}
|
|
}
|
|
|
|
|
|
function initPointFlowers() {
|
|
//area
|
|
pointFlower.area = Vector3.create(20.0, 20.0, 20.0);
|
|
pointFlower.area.x = pointFlower.area.y * renderSpec.aspect;
|
|
|
|
pointFlower.fader.x = 10.0; //env fade start
|
|
pointFlower.fader.y = pointFlower.area.z; //env fade half
|
|
pointFlower.fader.z = 0.1; //near fade start
|
|
|
|
// A resize changes the camera envelope, not the simulation. Keep the
|
|
// existing particles so responsive resizes do not visibly restart it.
|
|
if(pointFlower.initialized) return;
|
|
|
|
//particles
|
|
var PI2 = Math.PI * 2.0;
|
|
var tmpv3 = Vector3.create(0, 0, 0);
|
|
var tmpv = 0;
|
|
var symmetryrand = function() {return (Math.random() * 2.0 - 1.0);};
|
|
for(var i = 0; i < pointFlower.numFlowers; i++) {
|
|
var tmpprtcl = pointFlower.particles[i];
|
|
|
|
//velocity
|
|
tmpv3.x = symmetryrand() * 0.3 + 0.8;
|
|
tmpv3.y = symmetryrand() * 0.2 - 1.0;
|
|
tmpv3.z = symmetryrand() * 0.3 + 0.5;
|
|
Vector3.normalize(tmpv3);
|
|
tmpv = 2.0 + Math.random() * 1.0;
|
|
tmpprtcl.setVelocity(tmpv3.x * tmpv, tmpv3.y * tmpv, tmpv3.z * tmpv);
|
|
|
|
//rotation
|
|
tmpprtcl.setRotation(
|
|
symmetryrand() * PI2 * 0.5,
|
|
symmetryrand() * PI2 * 0.5,
|
|
symmetryrand() * PI2 * 0.5
|
|
);
|
|
|
|
//position
|
|
tmpprtcl.setPosition(
|
|
symmetryrand() * pointFlower.area.x,
|
|
symmetryrand() * pointFlower.area.y,
|
|
symmetryrand() * pointFlower.area.z
|
|
);
|
|
|
|
//euler
|
|
tmpprtcl.setEulerAngles(
|
|
Math.random() * Math.PI * 2.0,
|
|
Math.random() * Math.PI * 2.0,
|
|
Math.random() * Math.PI * 2.0
|
|
);
|
|
|
|
//size
|
|
tmpprtcl.setSize(0.9 + Math.random() * 0.1);
|
|
}
|
|
pointFlower.initialized = true;
|
|
}
|
|
|
|
|
|
function repeatParticlePosition(prt, cmp, limit) {
|
|
if(Math.abs(prt.position[cmp]) - prt.size * 0.5 > limit) {
|
|
// Modulo wrapping also handles a resumed tab or a large time step.
|
|
var span = limit * 2.0;
|
|
var wrapped = (prt.position[cmp] + limit) % span;
|
|
if(wrapped < 0.0) wrapped += span;
|
|
prt.position[cmp] = wrapped - limit;
|
|
}
|
|
}
|
|
|
|
function repeatParticleEuler(prt, cmp, PI2) {
|
|
prt.euler[cmp] = prt.euler[cmp] % PI2;
|
|
if(prt.euler[cmp] < 0.0) {
|
|
prt.euler[cmp] += PI2;
|
|
}
|
|
}
|
|
|
|
function compareParticleDepth(p0, p1) {
|
|
return p0.zkey - p1.zkey;
|
|
}
|
|
|
|
function renderPointFlowers() {
|
|
//update
|
|
var PI2 = Math.PI * 2.0;
|
|
|
|
for(var i = 0; i < pointFlower.numFlowers; i++) {
|
|
var prtcl = pointFlower.particles[i];
|
|
prtcl.update(timeInfo.delta, timeInfo.elapsed);
|
|
repeatParticlePosition(prtcl, 0, pointFlower.area.x);
|
|
repeatParticlePosition(prtcl, 1, pointFlower.area.y);
|
|
repeatParticlePosition(prtcl, 2, pointFlower.area.z);
|
|
repeatParticleEuler(prtcl, 0, PI2);
|
|
repeatParticleEuler(prtcl, 1, PI2);
|
|
repeatParticleEuler(prtcl, 2, PI2);
|
|
|
|
prtcl.alpha = 1.0;//(pointFlower.area.z - prtcl.position[2]) * 0.5;
|
|
|
|
prtcl.zkey = (camera.matrix[2] * prtcl.position[0]
|
|
+ camera.matrix[6] * prtcl.position[1]
|
|
+ camera.matrix[10] * prtcl.position[2]
|
|
+ camera.matrix[14]);
|
|
}
|
|
|
|
// sort
|
|
pointFlower.particles.sort(compareParticleDepth);
|
|
|
|
// update data
|
|
var ipos = pointFlower.positionArrayOffset;
|
|
var ieuler = pointFlower.eulerArrayOffset;
|
|
var imisc = pointFlower.miscArrayOffset;
|
|
for(var i = 0; i < pointFlower.numFlowers; i++) {
|
|
var prtcl = pointFlower.particles[i];
|
|
pointFlower.dataArray[ipos] = prtcl.position[0];
|
|
pointFlower.dataArray[ipos + 1] = prtcl.position[1];
|
|
pointFlower.dataArray[ipos + 2] = prtcl.position[2];
|
|
ipos += 3;
|
|
pointFlower.dataArray[ieuler] = prtcl.euler[0];
|
|
pointFlower.dataArray[ieuler + 1] = prtcl.euler[1];
|
|
pointFlower.dataArray[ieuler + 2] = prtcl.euler[2];
|
|
ieuler += 3;
|
|
pointFlower.dataArray[imisc] = prtcl.size;
|
|
pointFlower.dataArray[imisc + 1] = prtcl.alpha;
|
|
imisc += 2;
|
|
}
|
|
|
|
//draw
|
|
gl.enable(gl.BLEND);
|
|
//gl.disable(gl.DEPTH_TEST);
|
|
gl.blendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA);
|
|
|
|
var prog = pointFlower.program;
|
|
useShader(prog);
|
|
|
|
gl.uniformMatrix4fv(prog.uniforms.uProjection, false, projection.matrix);
|
|
gl.uniformMatrix4fv(prog.uniforms.uModelview, false, camera.matrix);
|
|
gl.uniform3fv(prog.uniforms.uResolution, renderSpec.array);
|
|
gl.uniform3fv(prog.uniforms.uDOF, Vector3.arrayForm(camera.dof));
|
|
gl.uniform3fv(prog.uniforms.uFade, Vector3.arrayForm(pointFlower.fader));
|
|
|
|
gl.bindBuffer(gl.ARRAY_BUFFER, pointFlower.buffer);
|
|
gl.bufferData(gl.ARRAY_BUFFER, pointFlower.dataArray, gl.DYNAMIC_DRAW);
|
|
|
|
gl.vertexAttribPointer(prog.attributes.aPosition, 3, gl.FLOAT, false, 0, pointFlower.positionArrayOffset * Float32Array.BYTES_PER_ELEMENT);
|
|
gl.vertexAttribPointer(prog.attributes.aEuler, 3, gl.FLOAT, false, 0, pointFlower.eulerArrayOffset * Float32Array.BYTES_PER_ELEMENT);
|
|
gl.vertexAttribPointer(prog.attributes.aMisc, 2, gl.FLOAT, false, 0, pointFlower.miscArrayOffset * Float32Array.BYTES_PER_ELEMENT);
|
|
|
|
// doubler
|
|
for(var i = 1; i < 2; i++) {
|
|
var zpos = i * -2.0;
|
|
pointFlower.offset[0] = pointFlower.area.x * -1.0;
|
|
pointFlower.offset[1] = pointFlower.area.y * -1.0;
|
|
pointFlower.offset[2] = pointFlower.area.z * zpos;
|
|
gl.uniform3fv(prog.uniforms.uOffset, pointFlower.offset);
|
|
gl.drawArrays(gl.POINTS, 0, pointFlower.numFlowers);
|
|
|
|
pointFlower.offset[0] = pointFlower.area.x * -1.0;
|
|
pointFlower.offset[1] = pointFlower.area.y * 1.0;
|
|
pointFlower.offset[2] = pointFlower.area.z * zpos;
|
|
gl.uniform3fv(prog.uniforms.uOffset, pointFlower.offset);
|
|
gl.drawArrays(gl.POINTS, 0, pointFlower.numFlowers);
|
|
|
|
pointFlower.offset[0] = pointFlower.area.x * 1.0;
|
|
pointFlower.offset[1] = pointFlower.area.y * -1.0;
|
|
pointFlower.offset[2] = pointFlower.area.z * zpos;
|
|
gl.uniform3fv(prog.uniforms.uOffset, pointFlower.offset);
|
|
gl.drawArrays(gl.POINTS, 0, pointFlower.numFlowers);
|
|
|
|
pointFlower.offset[0] = pointFlower.area.x * 1.0;
|
|
pointFlower.offset[1] = pointFlower.area.y * 1.0;
|
|
pointFlower.offset[2] = pointFlower.area.z * zpos;
|
|
gl.uniform3fv(prog.uniforms.uOffset, pointFlower.offset);
|
|
gl.drawArrays(gl.POINTS, 0, pointFlower.numFlowers);
|
|
}
|
|
|
|
//main
|
|
pointFlower.offset[0] = 0.0;
|
|
pointFlower.offset[1] = 0.0;
|
|
pointFlower.offset[2] = 0.0;
|
|
gl.uniform3fv(prog.uniforms.uOffset, pointFlower.offset);
|
|
gl.drawArrays(gl.POINTS, 0, pointFlower.numFlowers);
|
|
|
|
gl.bindBuffer(gl.ARRAY_BUFFER, null);
|
|
unuseShader(prog);
|
|
|
|
gl.enable(gl.DEPTH_TEST);
|
|
gl.disable(gl.BLEND);
|
|
}
|
|
|
|
|
|
// effects
|
|
//common util
|
|
function createEffectProgram(vtxsrc, frgsrc, exunifs, exattrs) {
|
|
var ret = {};
|
|
var unifs = ['uResolution', 'uSrc', 'uDelta'];
|
|
if(exunifs) {
|
|
unifs = unifs.concat(exunifs);
|
|
}
|
|
var attrs = ['aPosition'];
|
|
if(exattrs) {
|
|
attrs = attrs.concat(exattrs);
|
|
}
|
|
|
|
ret.program = createShader(vtxsrc, frgsrc, unifs, attrs);
|
|
if(!ret.program) throw new Error("Unable to create post-process shader program.");
|
|
useShader(ret.program);
|
|
|
|
ret.dataArray = new Float32Array([
|
|
-1.0, -1.0,
|
|
1.0, -1.0,
|
|
-1.0, 1.0,
|
|
1.0, 1.0
|
|
]);
|
|
ret.buffer = gl.createBuffer();
|
|
gl.bindBuffer(gl.ARRAY_BUFFER, ret.buffer);
|
|
gl.bufferData(gl.ARRAY_BUFFER, ret.dataArray, gl.STATIC_DRAW);
|
|
|
|
gl.bindBuffer(gl.ARRAY_BUFFER, null);
|
|
unuseShader(ret.program);
|
|
|
|
return ret;
|
|
}
|
|
|
|
|
|
// basic usage
|
|
// useEffect(prog, srctex({'texture':texid, 'dtxArray':(f32)[dtx, dty]})); //basic initialize
|
|
// gl.uniform**(...); //additional uniforms
|
|
// drawEffect()
|
|
// unuseEffect(prog)
|
|
// TEXTURE0 makes src
|
|
function useEffect(fxobj, srctex) {
|
|
var prog = fxobj.program;
|
|
useShader(prog);
|
|
gl.uniform3fv(prog.uniforms.uResolution, renderSpec.array);
|
|
|
|
if(srctex != null) {
|
|
gl.uniform2fv(prog.uniforms.uDelta, srctex.dtxArray);
|
|
gl.uniform1i(prog.uniforms.uSrc, 0);
|
|
|
|
gl.activeTexture(gl.TEXTURE0);
|
|
gl.bindTexture(gl.TEXTURE_2D, srctex.texture);
|
|
}
|
|
}
|
|
function drawEffect(fxobj) {
|
|
gl.bindBuffer(gl.ARRAY_BUFFER, fxobj.buffer);
|
|
gl.vertexAttribPointer(fxobj.program.attributes.aPosition, 2, gl.FLOAT, false, 0, 0);
|
|
gl.drawArrays(gl.TRIANGLE_STRIP, 0, 4);
|
|
}
|
|
function unuseEffect(fxobj) {
|
|
unuseShader(fxobj.program);
|
|
}
|
|
|
|
|
|
var effectLib = {};
|
|
function createEffectLib() {
|
|
|
|
var vtxsrc, frgsrc;
|
|
//common
|
|
var cmnvtxsrc = shaderSources["fx_common_vsh"];
|
|
|
|
//background
|
|
frgsrc = shaderSources["bg_fsh"];
|
|
effectLib.sceneBg = createEffectProgram(cmnvtxsrc, frgsrc, ['uTimes'], null);
|
|
|
|
// make brightpixels buffer
|
|
frgsrc = shaderSources["fx_brightbuf_fsh"];
|
|
effectLib.mkBrightBuf = createEffectProgram(cmnvtxsrc, frgsrc, null, null);
|
|
|
|
// direction blur
|
|
frgsrc = shaderSources["fx_dirblur_r4_fsh"];
|
|
effectLib.dirBlur = createEffectProgram(cmnvtxsrc, frgsrc, ['uBlurDir'], null);
|
|
|
|
//final composite
|
|
vtxsrc = shaderSources["pp_final_vsh"];
|
|
frgsrc = shaderSources["pp_final_fsh"];
|
|
effectLib.finalComp = createEffectProgram(vtxsrc, frgsrc, ['uBloom'], null);
|
|
}
|
|
|
|
|
|
// background
|
|
function createBackground() {
|
|
//console.log("create background");
|
|
}
|
|
function initBackground() {
|
|
//console.log("init background");
|
|
}
|
|
function renderBackground() {
|
|
gl.disable(gl.DEPTH_TEST);
|
|
|
|
useEffect(effectLib.sceneBg, null);
|
|
gl.uniform2f(effectLib.sceneBg.program.uniforms.uTimes, timeInfo.elapsed, timeInfo.delta);
|
|
drawEffect(effectLib.sceneBg);
|
|
unuseEffect(effectLib.sceneBg);
|
|
|
|
gl.enable(gl.DEPTH_TEST);
|
|
}
|
|
|
|
|
|
// post process
|
|
var postProcess = {};
|
|
function createPostProcess() {
|
|
//console.log("create post process");
|
|
}
|
|
function initPostProcess() {
|
|
//console.log("init post process");
|
|
}
|
|
|
|
|
|
function bindRenderTarget(rt, isclear) {
|
|
gl.bindFramebuffer(gl.FRAMEBUFFER, rt.frameBuffer);
|
|
gl.viewport(0, 0, rt.width, rt.height);
|
|
if(isclear) {
|
|
gl.clearColor(0, 0, 0, 0);
|
|
gl.clear(gl.COLOR_BUFFER_BIT | (rt.hasDepth ? gl.DEPTH_BUFFER_BIT : 0));
|
|
}
|
|
}
|
|
|
|
function renderPostProcess() {
|
|
gl.disable(gl.DEPTH_TEST);
|
|
|
|
//make bright buff
|
|
bindRenderTarget(renderSpec.wHalfRT0, true);
|
|
useEffect(effectLib.mkBrightBuf, renderSpec.mainRT);
|
|
drawEffect(effectLib.mkBrightBuf);
|
|
unuseEffect(effectLib.mkBrightBuf);
|
|
|
|
// make bloom
|
|
for(var i = 0; i < 2; i++) {
|
|
var p = 1.5 + 1 * i;
|
|
var s = 2.0 + 1 * i;
|
|
bindRenderTarget(renderSpec.wHalfRT1, true);
|
|
useEffect(effectLib.dirBlur, renderSpec.wHalfRT0);
|
|
gl.uniform4f(effectLib.dirBlur.program.uniforms.uBlurDir, p, 0.0, s, 0.0);
|
|
drawEffect(effectLib.dirBlur);
|
|
unuseEffect(effectLib.dirBlur);
|
|
|
|
bindRenderTarget(renderSpec.wHalfRT0, true);
|
|
useEffect(effectLib.dirBlur, renderSpec.wHalfRT1);
|
|
gl.uniform4f(effectLib.dirBlur.program.uniforms.uBlurDir, 0.0, p, 0.0, s);
|
|
drawEffect(effectLib.dirBlur);
|
|
unuseEffect(effectLib.dirBlur);
|
|
}
|
|
|
|
//display
|
|
gl.bindFramebuffer(gl.FRAMEBUFFER, null);
|
|
gl.viewport(0, 0, renderSpec.width, renderSpec.height);
|
|
gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
|
|
|
|
useEffect(effectLib.finalComp, renderSpec.mainRT);
|
|
gl.uniform1i(effectLib.finalComp.program.uniforms.uBloom, 1);
|
|
gl.activeTexture(gl.TEXTURE1);
|
|
gl.bindTexture(gl.TEXTURE_2D, renderSpec.wHalfRT0.texture);
|
|
drawEffect(effectLib.finalComp);
|
|
unuseEffect(effectLib.finalComp);
|
|
|
|
gl.enable(gl.DEPTH_TEST);
|
|
}
|
|
|
|
|
|
/////
|
|
var SceneEnv = {};
|
|
function createScene() {
|
|
createEffectLib();
|
|
createBackground();
|
|
createPointFlowers();
|
|
createPostProcess();
|
|
sceneStandBy = true;
|
|
}
|
|
|
|
|
|
function initScene() {
|
|
initBackground();
|
|
initPointFlowers();
|
|
initPostProcess();
|
|
|
|
//camera.position.z = 17.320508;
|
|
camera.position.z = pointFlower.area.z + projection.nearfar[0];
|
|
projection.angle = Math.atan2(pointFlower.area.y, camera.position.z + pointFlower.area.z) * 180.0 / Math.PI * 2.0;
|
|
Matrix44.loadProjection(projection.matrix, renderSpec.aspect, projection.angle, projection.nearfar[0], projection.nearfar[1]);
|
|
}
|
|
|
|
|
|
function renderScene() {
|
|
//draw
|
|
Matrix44.loadLookAt(camera.matrix, camera.position, camera.lookat, camera.up);
|
|
|
|
gl.enable(gl.DEPTH_TEST);
|
|
|
|
//gl.bindFramebuffer(gl.FRAMEBUFFER, null);
|
|
gl.bindFramebuffer(gl.FRAMEBUFFER, renderSpec.mainRT.frameBuffer);
|
|
gl.viewport(0, 0, renderSpec.mainRT.width, renderSpec.mainRT.height);
|
|
gl.clearColor(0.005, 0, 0.05, 0);
|
|
gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
|
|
|
|
renderBackground();
|
|
renderPointFlowers();
|
|
renderPostProcess();
|
|
}
|
|
|
|
|
|
/////
|
|
var sakuraCanvas = null;
|
|
var resizeTimer = null;
|
|
var resizeRequestVersion = 0;
|
|
var resizeDebounceMs = 140;
|
|
var normalRenderPixelBudget = 10000000;
|
|
var constrainedRenderPixelBudget = 6000000;
|
|
var transactionalPeakByteLimit = 128 * 1024 * 1024;
|
|
var constrainedPeakByteLimit = 96 * 1024 * 1024;
|
|
var minimumFallbackPixelRatio = 0.5;
|
|
|
|
function hasCompleteRenderTargetSet() {
|
|
return !!(renderSpec.mainRT && renderSpec.wHalfRT0 && renderSpec.wHalfRT1);
|
|
}
|
|
|
|
function getRenderPixelBudget() {
|
|
var deviceMemory = Number(navigator.deviceMemory);
|
|
if(isFinite(deviceMemory) && deviceMemory > 0 && deviceMemory <= 4) {
|
|
return constrainedRenderPixelBudget;
|
|
}
|
|
return normalRenderPixelBudget;
|
|
}
|
|
|
|
function getRenderDimensionLimit() {
|
|
if(!gl || !gl.getParameter) return Infinity;
|
|
var maxTextureSize = gl.getParameter(gl.MAX_TEXTURE_SIZE) || Infinity;
|
|
var maxRenderbufferSize = gl.getParameter(gl.MAX_RENDERBUFFER_SIZE) || Infinity;
|
|
return Math.min(maxTextureSize, maxRenderbufferSize);
|
|
}
|
|
|
|
function createCanvasSize(cssWidth, cssHeight, pixelRatio, requestedPixelRatio) {
|
|
var width = Math.max(1, Math.round(cssWidth * pixelRatio));
|
|
var height = Math.max(1, Math.round(cssHeight * pixelRatio));
|
|
return {
|
|
'cssWidth':cssWidth,
|
|
'cssHeight':cssHeight,
|
|
'width':width,
|
|
'height':height,
|
|
'pixels':width * height,
|
|
'pixelRatio':pixelRatio,
|
|
'requestedPixelRatio':requestedPixelRatio
|
|
};
|
|
}
|
|
|
|
function measureCanvasSize() {
|
|
var d = document.documentElement;
|
|
var cssWidth = Math.max(1, window.innerWidth || d.clientWidth || 1);
|
|
var cssHeight = Math.max(1, window.innerHeight || d.clientHeight || 1);
|
|
var requestedPixelRatio = Math.min(Math.max(window.devicePixelRatio || 1, 1), 2);
|
|
var budgetRatio = Math.sqrt(getRenderPixelBudget() / (cssWidth * cssHeight));
|
|
var dimensionLimit = getRenderDimensionLimit();
|
|
var dimensionRatio = Math.min(dimensionLimit / cssWidth, dimensionLimit / cssHeight);
|
|
var pixelRatio = Math.min(requestedPixelRatio, budgetRatio, dimensionRatio);
|
|
|
|
if(!isFinite(pixelRatio) || pixelRatio <= 0) pixelRatio = 0.25;
|
|
return createCanvasSize(cssWidth, cssHeight, pixelRatio, requestedPixelRatio);
|
|
}
|
|
|
|
function getResizeCandidates(canvasSize) {
|
|
var ratios = [];
|
|
var floorRatio = canvasSize.pixelRatio < minimumFallbackPixelRatio ?
|
|
canvasSize.pixelRatio * 0.5 : minimumFallbackPixelRatio;
|
|
var factors = [1.0, 0.8, 0.6, 0.5];
|
|
|
|
for(var i = 0; i < factors.length; i++) {
|
|
var ratio = Math.max(floorRatio, canvasSize.pixelRatio * factors[i]);
|
|
var duplicate = false;
|
|
for(var j = 0; j < ratios.length; j++) {
|
|
if(Math.abs(ratios[j] - ratio) < 0.0001) {
|
|
duplicate = true;
|
|
break;
|
|
}
|
|
}
|
|
if(!duplicate) ratios.push(ratio);
|
|
}
|
|
|
|
return ratios.map(function(ratio) {
|
|
return createCanvasSize(canvasSize.cssWidth, canvasSize.cssHeight, ratio, canvasSize.requestedPixelRatio);
|
|
});
|
|
}
|
|
|
|
function shouldReleaseBeforeAllocate(previousTargets, width, height) {
|
|
if(!previousTargets || !previousTargets.mainRT) return false;
|
|
var deviceMemory = Number(navigator.deviceMemory);
|
|
var peakLimit = isFinite(deviceMemory) && deviceMemory > 0 && deviceMemory <= 4 ?
|
|
constrainedPeakByteLimit : transactionalPeakByteLimit;
|
|
var oldBytes = estimateRenderTargetSetBytes(previousTargets.mainRT.width, previousTargets.mainRT.height);
|
|
var nextBytes = estimateRenderTargetSetBytes(width, height);
|
|
return oldBytes + nextBytes > peakLimit;
|
|
}
|
|
|
|
function commitCanvasSize(canvas, canvasSize) {
|
|
if(canvas.width !== canvasSize.width) canvas.width = canvasSize.width;
|
|
if(canvas.height !== canvasSize.height) canvas.height = canvasSize.height;
|
|
}
|
|
|
|
function onResize() {
|
|
if(!sakuraCanvas || contextLost) return;
|
|
if(resizeTimer !== null) window.clearTimeout(resizeTimer);
|
|
var requestVersion = ++resizeRequestVersion;
|
|
resizeTimer = window.setTimeout(function() {
|
|
resizeTimer = null;
|
|
window.requestAnimationFrame(function() {
|
|
if(contextLost || requestVersion !== resizeRequestVersion) return;
|
|
var canvasSize = measureCanvasSize();
|
|
if(hasCompleteRenderTargetSet() && renderSpec.width === canvasSize.width && renderSpec.height === canvasSize.height) {
|
|
renderSpec.pixelRatio = canvasSize.pixelRatio;
|
|
return;
|
|
}
|
|
try {
|
|
setViewports(canvasSize);
|
|
if(sceneStandBy) initScene();
|
|
if(prefersReducedMotion && sceneStandBy) render();
|
|
else if(animating) scheduleAnimationFrame();
|
|
} catch(error) {
|
|
// The canvas backing size was not changed, so its last
|
|
// composited frame remains visible while a later retry is
|
|
// requested by another resize or context restoration.
|
|
console.error("Unable to resize Sakura render targets.", error);
|
|
if(prefersReducedMotion && sceneStandBy && hasCompleteRenderTargetSet()) render();
|
|
}
|
|
});
|
|
}, resizeDebounceMs);
|
|
}
|
|
|
|
|
|
function setViewports(canvasSize) {
|
|
var width = Math.max(1, canvasSize.width);
|
|
var height = Math.max(1, canvasSize.height);
|
|
if(hasCompleteRenderTargetSet() && renderSpec.width === width && renderSpec.height === height) {
|
|
renderSpec.pixelRatio = canvasSize.pixelRatio;
|
|
gl.viewport(0, 0, width, height);
|
|
return false;
|
|
}
|
|
|
|
var previousTargets = {
|
|
'mainRT':renderSpec.mainRT,
|
|
'wHalfRT0':renderSpec.wHalfRT0,
|
|
'wHalfRT1':renderSpec.wHalfRT1
|
|
};
|
|
var releaseBeforeAllocate = shouldReleaseBeforeAllocate(previousTargets, width, height);
|
|
|
|
if(releaseBeforeAllocate) {
|
|
// This path deliberately trades allocation rollback for a bounded
|
|
// peak. The default framebuffer is kept at its old size until the
|
|
// replacement set is ready, so the last composited frame remains on
|
|
// screen during the short resize transaction.
|
|
gl.finish();
|
|
unbindRenderTargetState();
|
|
deleteRenderTargetSet(previousTargets);
|
|
renderSpec.mainRT = null;
|
|
renderSpec.wHalfRT0 = null;
|
|
renderSpec.wHalfRT1 = null;
|
|
}
|
|
|
|
var nextTargets = null;
|
|
var lastError = null;
|
|
var candidates = getResizeCandidates(canvasSize);
|
|
for(var i = 0; i < candidates.length; i++) {
|
|
try {
|
|
nextTargets = createRenderTargetSet(candidates[i].width, candidates[i].height);
|
|
canvasSize = candidates[i];
|
|
break;
|
|
} catch(error) {
|
|
lastError = error;
|
|
if(gl.isContextLost && gl.isContextLost()) throw error;
|
|
}
|
|
}
|
|
if(!nextTargets) {
|
|
if(!releaseBeforeAllocate) {
|
|
unbindRenderTargetState();
|
|
}
|
|
throw lastError || new Error("Unable to allocate Sakura render targets.");
|
|
}
|
|
|
|
commitCanvasSize(sakuraCanvas, canvasSize);
|
|
renderSpec.mainRT = nextTargets.mainRT;
|
|
renderSpec.wHalfRT0 = nextTargets.wHalfRT0;
|
|
renderSpec.wHalfRT1 = nextTargets.wHalfRT1;
|
|
renderSpec.setSize(canvasSize.width, canvasSize.height);
|
|
renderSpec.pixelRatio = canvasSize.pixelRatio;
|
|
gl.clearColor(0.2, 0.2, 0.5, 1.0);
|
|
gl.viewport(0, 0, renderSpec.width, renderSpec.height);
|
|
if(!releaseBeforeAllocate) {
|
|
unbindRenderTargetState();
|
|
deleteRenderTargetSet(previousTargets);
|
|
}
|
|
return true;
|
|
}
|
|
|
|
|
|
function render() {
|
|
if(!hasCompleteRenderTargetSet() || contextLost) return false;
|
|
renderScene();
|
|
return true;
|
|
}
|
|
|
|
|
|
var animating = true;
|
|
var contextLost = false;
|
|
var sakuraInitialized = false;
|
|
var pageVisible = !document.hidden;
|
|
var framePending = false;
|
|
var frameRequestId = null;
|
|
var frameRequestGeneration = 0;
|
|
var maximumFrameRate = 120;
|
|
var minimumFrameInterval = 1000.0 / maximumFrameRate;
|
|
var frameIntervalTolerance = 0.01;
|
|
var frameAccumulator = 0;
|
|
var previousAnimationFrameTime = 0;
|
|
var reducedMotionQuery = window.matchMedia ? window.matchMedia('(prefers-reduced-motion: reduce)') : null;
|
|
var prefersReducedMotion = !!(reducedMotionQuery && reducedMotionQuery.matches);
|
|
|
|
function resetFrameLimiter(now) {
|
|
previousAnimationFrameTime = now;
|
|
frameAccumulator = 0;
|
|
timeInfo.prev = now;
|
|
timeInfo.delta = 0;
|
|
}
|
|
|
|
function shouldRenderFrame(now) {
|
|
var animationFrameDelta = Math.min(Math.max(now - previousAnimationFrameTime, 0), 250);
|
|
previousAnimationFrameTime = now;
|
|
frameAccumulator += animationFrameDelta;
|
|
if(frameAccumulator + frameIntervalTolerance < minimumFrameInterval) return false;
|
|
|
|
// Preserve fractional time so 144/165 Hz displays converge to 120 FPS
|
|
// instead of falling to a coarse refresh-rate divisor.
|
|
frameAccumulator -= minimumFrameInterval;
|
|
if(frameAccumulator < 0) frameAccumulator = 0;
|
|
if(frameAccumulator >= minimumFrameInterval) frameAccumulator %= minimumFrameInterval;
|
|
if(minimumFrameInterval - frameAccumulator < frameIntervalTolerance) frameAccumulator = 0;
|
|
return true;
|
|
}
|
|
|
|
function cancelScheduledAnimationFrame() {
|
|
frameRequestGeneration++;
|
|
if(frameRequestId !== null && window.cancelAnimationFrame) {
|
|
window.cancelAnimationFrame(frameRequestId);
|
|
}
|
|
frameRequestId = null;
|
|
framePending = false;
|
|
}
|
|
|
|
function scheduleAnimationFrame() {
|
|
if(framePending || !animating || !pageVisible || contextLost || prefersReducedMotion || !hasCompleteRenderTargetSet()) return;
|
|
framePending = true;
|
|
var requestGeneration = frameRequestGeneration;
|
|
frameRequestId = window.requestAnimationFrame(function(timestamp) {
|
|
if(requestGeneration !== frameRequestGeneration) return;
|
|
framePending = false;
|
|
frameRequestId = null;
|
|
animate(timestamp);
|
|
});
|
|
}
|
|
|
|
function readPageVisibility() {
|
|
if(typeof document.hidden === "boolean") return !document.hidden;
|
|
return document.visibilityState !== "hidden";
|
|
}
|
|
|
|
function synchronizeAnimationState(reducedMotionOverride) {
|
|
pageVisible = readPageVisibility();
|
|
if(typeof reducedMotionOverride === "boolean") {
|
|
prefersReducedMotion = reducedMotionOverride;
|
|
} else if(reducedMotionQuery) {
|
|
prefersReducedMotion = !!reducedMotionQuery.matches;
|
|
}
|
|
|
|
if(!pageVisible || contextLost || !animating) {
|
|
cancelScheduledAnimationFrame();
|
|
return;
|
|
}
|
|
if(!sceneStandBy || !hasCompleteRenderTargetSet()) return;
|
|
|
|
// A browser can discard a queued frame while a page is hidden or being
|
|
// restored. Replace any pending request so cold starts cannot retain a
|
|
// stale framePending flag. Generation guards isolate the old callback.
|
|
if(framePending) cancelScheduledAnimationFrame();
|
|
resetFrameLimiter(currentTime());
|
|
if(prefersReducedMotion) {
|
|
timeInfo.delta = 0;
|
|
render();
|
|
} else {
|
|
scheduleAnimationFrame();
|
|
}
|
|
}
|
|
|
|
function onReducedMotionChange(event) {
|
|
var nextPreference = !!event.matches;
|
|
if(nextPreference === prefersReducedMotion) return;
|
|
synchronizeAnimationState(nextPreference);
|
|
}
|
|
|
|
function onPageHide() {
|
|
pageVisible = false;
|
|
cancelScheduledAnimationFrame();
|
|
}
|
|
|
|
function toggleAnimation(elm) {
|
|
animating = !animating;
|
|
if(animating) {
|
|
synchronizeAnimationState();
|
|
} else {
|
|
cancelScheduledAnimationFrame();
|
|
}
|
|
if(elm) {
|
|
elm.innerHTML = animating? "Stop":"Start";
|
|
}
|
|
}
|
|
|
|
|
|
function stepAnimation() {
|
|
if(!animating && pageVisible && !contextLost) animate(currentTime(), true);
|
|
}
|
|
|
|
|
|
function animate(timestamp, singleStep) {
|
|
if(contextLost || !pageVisible || (prefersReducedMotion && !singleStep) || (!animating && !singleStep)) return;
|
|
var now = typeof timestamp === "number" ? timestamp : currentTime();
|
|
if(!timeInfo.start) timeInfo.start = now;
|
|
if(!singleStep && !shouldRenderFrame(now)) {
|
|
scheduleAnimationFrame();
|
|
return;
|
|
}
|
|
timeInfo.elapsed = (now - timeInfo.start) / 1000.0;
|
|
timeInfo.delta = Math.min(Math.max((now - timeInfo.prev) / 1000.0, 0.0), 0.05);
|
|
timeInfo.prev = now;
|
|
render();
|
|
if(animating && !prefersReducedMotion) scheduleAnimationFrame();
|
|
}
|
|
|
|
|
|
function initializeSakura() {
|
|
if(sakuraInitialized) return;
|
|
sakuraCanvas = document.getElementById("sakura");
|
|
if(!sakuraCanvas) return;
|
|
sakuraInitialized = true;
|
|
var initialCanvasSize = null;
|
|
try {
|
|
gl = sakuraCanvas.getContext('webgl', {
|
|
alpha: true,
|
|
antialias: false,
|
|
depth: true,
|
|
powerPreference: 'high-performance'
|
|
}) || sakuraCanvas.getContext('experimental-webgl');
|
|
if(!gl) throw new Error("WebGL is unavailable.");
|
|
initialCanvasSize = measureCanvasSize();
|
|
} catch(e) {
|
|
console.error(e);
|
|
sakuraCanvas.hidden = true;
|
|
return;
|
|
}
|
|
|
|
window.addEventListener('resize', onResize);
|
|
sakuraCanvas.addEventListener('webglcontextlost', function(event) {
|
|
event.preventDefault();
|
|
contextLost = true;
|
|
cancelScheduledAnimationFrame();
|
|
resizeRequestVersion++;
|
|
if(resizeTimer !== null) {
|
|
window.clearTimeout(resizeTimer);
|
|
resizeTimer = null;
|
|
}
|
|
}, false);
|
|
sakuraCanvas.addEventListener('webglcontextrestored', function() {
|
|
contextLost = false;
|
|
sceneStandBy = false;
|
|
pointFlower = {};
|
|
effectLib = {};
|
|
renderSpec.mainRT = null;
|
|
renderSpec.wHalfRT0 = null;
|
|
renderSpec.wHalfRT1 = null;
|
|
try {
|
|
var restoredCanvasSize = measureCanvasSize();
|
|
setViewports(restoredCanvasSize);
|
|
createScene();
|
|
initScene();
|
|
timeInfo.start = currentTime();
|
|
resetFrameLimiter(timeInfo.start);
|
|
synchronizeAnimationState();
|
|
} catch(error) {
|
|
contextLost = true;
|
|
console.error(error);
|
|
sakuraCanvas.hidden = true;
|
|
}
|
|
}, false);
|
|
|
|
try {
|
|
setViewports(initialCanvasSize);
|
|
createScene();
|
|
initScene();
|
|
timeInfo.start = currentTime();
|
|
resetFrameLimiter(timeInfo.start);
|
|
synchronizeAnimationState();
|
|
} catch(error) {
|
|
console.error(error);
|
|
sakuraCanvas.hidden = true;
|
|
}
|
|
}
|
|
|
|
|
|
// Set animation-frame fallbacks for older embedded browsers.
|
|
(function(w) {
|
|
w.requestAnimationFrame = w.requestAnimationFrame || w.webkitRequestAnimationFrame || w.mozRequestAnimationFrame ||
|
|
function(callback) { return w.setTimeout(callback, 1000 / 60); };
|
|
w.cancelAnimationFrame = w.cancelAnimationFrame || w.webkitCancelAnimationFrame || w.mozCancelAnimationFrame ||
|
|
function(requestId) { w.clearTimeout(requestId); };
|
|
})(window);
|
|
|
|
if(reducedMotionQuery) {
|
|
if(reducedMotionQuery.addEventListener) reducedMotionQuery.addEventListener('change', onReducedMotionChange);
|
|
else if(reducedMotionQuery.addListener) reducedMotionQuery.addListener(onReducedMotionChange);
|
|
}
|
|
document.addEventListener('visibilitychange', synchronizeAnimationState);
|
|
window.addEventListener('pagehide', onPageHide);
|
|
window.addEventListener('pageshow', synchronizeAnimationState);
|
|
|
|
if(document.readyState === "loading") {
|
|
document.addEventListener('DOMContentLoaded', initializeSakura, { once:true });
|
|
} else {
|
|
initializeSakura();
|
|
}
|
|
})();
|