2a:null 2b:["$","title",null,{"children":"SDF 2D | AntV | Observable"}] 30:T4ccf,(async () => { const $canvas = createCanvas(); const deviceContribution = createDeviceContributionWebGPU(); const swapChain = await deviceContribution.createSwapChain($canvas); swapChain.configureSwapChain($canvas.width, $canvas.height); const device = swapChain.getDevice(); const { BufferUsage, BufferFrequencyHint, VertexStepMode, Format, PrimitiveTopology, TextureUsage, TransparentWhite, TransparentBlack, ChannelWriteMask, BlendMode, BlendFactor, CullMode, CompareMode, WrapMode, TexFilterMode, MipFilterMode, TextureDimension } = deviceAPI; registerShaderModule(device, prelude); const screen = device.createTexture({ format: Format.F16_RGBA, width: $canvas.width, height: $canvas.height, dimension: TextureDimension.TEXTURE_2D, usage: TextureUsage.STORAGE }); const { pipeline: blitPipeline, bindings: blitBindings } = createBlitPipelineAndBindings(device, screen); const computeProgram = createProgram(device, { compute: { entryPoint: "main_image", wgsl: /* wgsl */ ` #import prelude::{screen, time}; // MIT License. © 2023 Inigo Quilez, Munrocket // https://gist.github.com/munrocket/30e645d584b5300ee69295e54674b3e4 fn sdCircle(p: vec2f, r: f32) -> f32 { return length(p) - r; } fn sdRoundedBox(p: vec2f, b: vec2f, r: vec4f) -> f32 { var x = r.x; var y = r.y; x = select(r.z, r.x, p.x > 0.); y = select(r.w, r.y, p.x > 0.); x = select(y, x, p.y > 0.); let q = abs(p) - b + x; return min(max(q.x, q.y), 0.) + length(max(q, vec2f(0.))) - x; } fn sdBox(p: vec2f, b: vec2f) -> f32 { let d = abs(p) - b; return length(max(d, vec2f(0.))) + min(max(d.x, d.y), 0.); } fn sdOrientedBox(p: vec2f, a: vec2f, b: vec2f, th: f32) -> f32 { let l = length(b - a); let d = (b - a) / l; var q = p - (a + b) * 0.5; q = q * mat2x2(vec2f(d.x, d.y), vec2f(-d.y, d.x)); q = abs(q) - vec2f(l, th) * 0.5; return length(max(q, vec2f(0.))) + min(max(q.x, q.y), 0.); } fn sdSegment(p: vec2f, a: vec2f, b: vec2f) -> f32 { let pa = p - a; let ba = b - a; let h = clamp(dot(pa, ba) / dot(ba, ba), 0., 1.); return length(pa - ba * h); } fn sdRhombus(p: vec2f, b: vec2f) -> f32 { let q = abs(p); let qb = dot(q, vec2f(b.x, -b.y)); let bb = dot(b, vec2f(b.x, -b.y)); let h = clamp((-2. * qb + bb) / dot(b, b), -1., 1.); let d = length(q - 0.5 * b * vec2f(1. - h, 1. + h)); return d * sign(q.x * b.y + q.y * b.x - b.x * b.y); } fn sdTrapezoid(p: vec2f, r1: f32, r2: f32, he: f32) -> f32 { let k1 = vec2f(r2, he); let k2 = vec2f(r2 - r1, 2. * he); let q = vec2f(abs(p.x), p.y); let ca = vec2f(q.x - min(q.x, select(r2, r1, q.y < 0.0)), abs(q.y) - he); let cb = q - k1 + k2 * clamp(dot(k1 - q, k2) / dot(k2, k2), 0., 1.); let s = select(1., -1., cb.x < 0.0 && ca.y < 0.0); return s * sqrt(min(dot(ca, ca), dot(cb, cb))); } fn sdParallelogram(p: vec2f, wi: f32, he: f32, sk: f32) -> f32 { let e = vec2f(sk, he); var q: vec2f = select(p, -p, p.y < 0.); // horizontal edge var w: vec2f = q - e; w.x = w.x - clamp(w.x, -wi, wi); var d: vec2f = vec2f(dot(w, w), -w.y); // vertical edge let s = q.x * e.y - q.y * e.x; q = select(q, -q, s < 0.); var v: vec2f = q - vec2f(wi, 0.); v = v - e * clamp(dot(v, e) / dot(e, e), -1., 1.); d = min(d, vec2f(dot(v, v), wi * he - abs(s))); return sqrt(d.x) * sign(-d.y); } fn sdEquilateralTriangle(p: vec2f) -> f32 { let k = sqrt(3.); var q: vec2f = vec2f(abs(p.x) - 1.0, p.y + 1. / k); if (q.x + k * q.y > 0.) { q = vec2f(q.x - k * q.y, -k * q.x - q.y) / 2.; } q.x = q.x - clamp(q.x, -2., 0.); return -length(q) * sign(q.y); } fn sdTriangleIsosceles(p: vec2f, c: vec2f) -> f32 { let q = vec2f(abs(p.x), p.y); let a = q - c * clamp(dot(q, c) / dot(c, c), 0., 1.); let b = q - c * vec2f(clamp(q.x / c.x, 0., 1.), 1.); let s = -sign(c.y); let d = min(vec2f(dot(a, a), s * (q.x * c.y - q.y * c.x)), vec2f(dot(b, b), s * (q.y - c.y))); return -sqrt(d.x) * sign(d.y); } fn sdTriangle(p: vec2f, p0: vec2f, p1: vec2f, p2: vec2f) -> f32 { let e0 = p1 - p0; let e1 = p2 - p1; let e2 = p0 - p2; let v0 = p - p0; let v1 = p - p1; let v2 = p - p2; let pq0 = v0 - e0 * clamp(dot(v0, e0) / dot(e0, e0), 0., 1.); let pq1 = v1 - e1 * clamp(dot(v1, e1) / dot(e1, e1), 0., 1.); let pq2 = v2 - e2 * clamp(dot(v2, e2) / dot(e2, e2), 0., 1.); let s = sign(e0.x * e2.y - e0.y * e2.x); let d = min(min(vec2f(dot(pq0, pq0), s * (v0.x * e0.y - v0.y * e0.x)), vec2f(dot(pq1, pq1), s * (v1.x * e1.y - v1.y * e1.x))), vec2f(dot(pq2, pq2), s * (v2.x * e2.y - v2.y * e2.x))); return -sqrt(d.x) * sign(d.y); } fn sdUnevenCapsule(p: vec2f, r1: f32, r2: f32, h: f32) -> f32 { let q = vec2f(abs(p.x), p.y); let b = (r1 - r2) / h; let a = sqrt(1. - b * b); let k = dot(q, vec2f(-b, a)); if (k < 0.) { return length(q) - r1; } if (k > a * h) { return length(q - vec2f(0., h)) - r2; } return dot(q, vec2f(a, b)) - r1; } fn sdPentagon(p: vec2f, r: f32) -> f32 { let k = vec3f(0.809016994, 0.587785252, 0.726542528); var q: vec2f = vec2f(abs(p.x), p.y); q = q - 2. * min(dot(vec2f(-k.x, k.y), q), 0.) * vec2f(-k.x, k.y); q = q - 2. * min(dot(vec2f(k.x, k.y), q), 0.) * vec2f(k.x, k.y); q = q - vec2f(clamp(q.x, -r * k.z, r * k.z), r); return length(q) * sign(q.y); } fn sdHexagon(p: vec2f, r: f32) -> f32 { let k = vec3f(-0.866025404, 0.5, 0.577350269); var q: vec2f = abs(p); q = q - 2. * min(dot(k.xy, q), 0.) * k.xy; q = q - vec2f(clamp(q.x, -k.z * r, k.z * r), r); return length(q) * sign(q.y); } fn sdOctogon(p: vec2f, r: f32) -> f32 { let k = vec3f(-0.9238795325, 0.3826834323, 0.4142135623); var q: vec2f = abs(p); q = q - 2. * min(dot(vec2f(k.x, k.y), q), 0.) * vec2f(k.x, k.y); q = q - 2. * min(dot(vec2f(-k.x, k.y), q), 0.) * vec2f(-k.x, k.y); q = q - vec2f(clamp(q.x, -k.z * r, k.z * r), r); return length(q) * sign(q.y); } fn sdHexagram(p: vec2f, r: f32) -> f32 { let k = vec4f(-0.5, 0.8660254038, 0.5773502692, 1.7320508076); var q: vec2f = abs(p); q = q - 2. * min(dot(k.xy, q), 0.) * k.xy; q = q - 2. * min(dot(k.yx, q), 0.) * k.yx; q = q - vec2f(clamp(q.x, r * k.z, r * k.w), r); return length(q) * sign(q.y); } fn sdStar5(p: vec2f, r: f32, rf: f32) -> f32 { let k1 = vec2f(0.809016994375, -0.587785252292); let k2 = vec2f(-k1.x, k1.y); var q: vec2f = vec2f(abs(p.x), p.y); q = q - 2. * max(dot(k1, q), 0.) * k1; q = q - 2. * max(dot(k2, q), 0.) * k2; q.x = abs(q.x); q.y = q.y - r; let ba = rf * vec2f(-k1.y, k1.x) - vec2f(0., 1.); let h = clamp(dot(q, ba) / dot(ba, ba), 0., r); return length(q - ba * h) * sign(q.y * ba.x - q.x * ba.y); } fn sdStar(p: vec2f, r: f32, n: u32, m: f32) ->f32 { let an = 3.141593 / f32(n); let en = 3.141593 / m; let acs = vec2f(cos(an), sin(an)); let ecs = vec2f(cos(en), sin(en)); let bn = (atan2(abs(p.x), p.y) % (2. * an)) - an; var q: vec2f = length(p) * vec2f(cos(bn), abs(sin(bn))); q = q - r * acs; q = q + ecs * clamp(-dot(q, ecs), 0., r * acs.y / ecs.y); return length(q) * sign(q.x); } fn sdPie(p: vec2f, sc: vec2f, r: f32) -> f32 { let q = vec2f(abs(p.x), p.y); let l = length(q) - r; let m = length(q - sc * clamp(dot(q, sc), 0., r)); return max(l, m * sign(sc.y * q.x - sc.x * q.y)); } fn sdArc(p: vec2f, sc1: vec2f, sc2: vec2f, r1: f32, r2: f32) -> f32 { var q: vec2f = p * mat2x2(vec2f(sc1.x, sc1.y), vec2f(-sc1.y, sc1.x)); q.x = abs(q.x); let k = select(length(q), dot(q, sc2), sc2.y * q.x > sc2.x * q.y); return sqrt(dot(q, q) + r1 * r1 - 2. * r1 * k) - r2; } fn sdHorseshoe(p: vec2f, sc: vec2f, r: f32, l: f32, w: f32) -> f32 { var q: vec2f = vec2f(abs(p.x), p.y); let m = length(p); q = q * mat2x2(vec2f(-sc.y, sc.x), vec2f(sc.x, sc.y)); q = vec2f(select(m * sign(-sc.y), q.x, q.y > 0.0 || q.x > 0.), select(m, q.y, q.x > 0.)); q = vec2f(q.x, abs(q.y - r)) - vec2f(l, w); return length(max(q, vec2f(0.))) + min(0., max(q.x, q.y)); } fn sdVesica(p: vec2f, r: f32, d: f32) -> f32 { let q = abs(p); let b = sqrt(r * r - d * d); let cond = (q.y -b) * d > q.x * b; return select(length(q - vec2f(-d, 0.))-r, length(q - vec2f(0., b)), cond); } fn sdMoon(p: vec2f, d: f32, ra: f32, rb: f32) -> f32 { let q = vec2f(p.x, abs(p.y)); let a = (ra * ra - rb * rb + d * d) / (2. * d); let b = sqrt(max(ra * ra - a * a, 0.)); if (d * (q.x * b - q.y * a) > d * d * max(b - q.y, 0.)) { return length(q-vec2f(a, b)); } return max((length(q) - ra), -(length(q - vec2f(d, 0.)) - rb)); } fn sdRoundedCross(p: vec2f, h: f32) -> f32 { let k = 0.5 * (h + 1. / h); let q = abs(p); let v1 = q - vec2f(1., k); let v2 = q - vec2f(0., h); let v3 = q - vec2f(1., 0.); let d1 = k - sqrt(dot(v1, v1)); let d2 = sqrt(min(dot(v2, v2), dot(v3, v3))); return select(d2, d1, q.x < 1. && q.y < q.x * (k - h) + h); } fn sdEgg(p: vec2f, ra: f32, rb: f32) -> f32 { let k = sqrt(3.); let q = vec2f(abs(p.x), p.y); let r = ra - rb; let d1 = length(q) - r; let d2 = length(vec2f(q.x, q.y - k * r)); let d3 = length(vec2f(q.x + r, q.y)) - 2. * r; return select(select(d3, d2, k * (q.x + r) < q.y), d1, q.y < 0.) - rb; } fn sdHeart(p: vec2f) -> f32 { let q = vec2f(abs(p.x), p.y); let w = q - vec2f(0.25, 0.75); if (q.x + q.y > 1.0) { return sqrt(dot(w, w)) - sqrt(2.) / 4.; } let u = q - vec2f(0., 1.); let v = q - 0.5 * max(q.x + q.y, 0.); return sqrt(min(dot(u, u), dot(v, v))) * sign(q.x - q.y); } fn sdCross(p: vec2f, b: vec2f) -> f32 { var q: vec2f = abs(p); q = select(q.xy, q.yx, q.y > q.x); let t = q - b; let k = max(t.y, t.x); let w = select(vec2f(b.y - q.x, -k), t, k > 0.); return sign(k) * length(max(w, vec2f(0.))); } fn sdRoundedX(p: vec2f, w: f32, r: f32) -> f32 { let q = abs(p); return length(q - min(q.x + q.y, w) * 0.5) - r; } const N: i32 = 5; fn sdPolygon(p: vec2f, v: ptr>) -> f32 { let c = *v; var d = dot(p - c[0], p - c[0]); var s: f32 = 1.; for (var i: i32 = 0; i < N; i = i + 1) { let j = (i + 1) % N; // let e = c[i] - c[j]; // let w = p - c[j]; // let b = w - e * clamp(dot(w, e) / dot(e, e), 0., 1.); // d = min(d, dot(b, b)); // let c1 = p.y >= c[j].y; // let c2 = p.y < c[i].y; // let c3 = e.x * w.y > e.y * w.x; // let c = vec3(c1, c2, c3); // if (all(c) || all(!c)) { s = -s; }; } return s * sqrt(d); } fn sdEllipse(p: vec2f, ab: vec2f) -> f32 { var q: vec2f = abs(p); var e: vec2f = ab; if (q.x > q.y) { q = q.yx; e = ab.yx; } let l = e.y * e.y - e.x * e.x; let m = e.x * q.x / l; let m2 = m * m; let n = e.y * q.y / l; let n2 = n * n; let c = (m2 + n2 - 1.) / 3.; let c3 = c * c * c; let b = c3 + m2 * n2 * 2.; let d = c3 + m2 * n2; let g = m + m * n2; var co: f32; if (d < 0.) { let h = acos(b / c3) / 3.0; let s = cos(h); let t = sin(h) * sqrt(3.); let rx = sqrt(-c * (s + t + 2.0) + m2); let ry = sqrt(-c * (s - t + 2.0) + m2); co = (ry + sign(l) * rx + abs(g) / (rx * ry) - m) / 2.; } else { let h = 2. * m * n * sqrt(d); let s = sign(b + h) * pow(abs(b + h), 1. / 3.); let u = sign(b - h) * pow(abs(b - h), 1. / 3.); let rx = -s - u - c * 4. + 2. * m2; let ry = (s - u) * sqrt(3.); let rm = sqrt(rx * rx + ry * ry); co = (ry / sqrt(rm - rx) + 2. * g / rm - m) / 2.; } let r = e * vec2f(co, sqrt(1.0-co*co)); return length(r - q) * sign(q.y - r.y); } fn sdParabola(pos: vec2f, k: f32) -> f32 { let p = vec2f(abs(pos.x), pos.y); let ik = 1. / k; let u = ik * (p.y - 0.5 * ik) / 3.; let v = 0.25 * ik * ik * p.x; let h = v * v - u * u * u; let r = sqrt(abs(h)); let x = select(2. * cos(atan2(r, v) / 3.) * sqrt(u), pow(v + r, 1. / 3.) - pow(abs(v - r), 1. / 3.) * sign(r - v), h > 0.0); return length(p - vec2f(x, k * x * x)) * sign(p.x - x); } fn sdParabolaSegment(pos: vec2f, wi: f32, he: f32) -> f32 { let p = vec2f(abs(pos.x), pos.y); let ik = wi * wi / he; let u = ik * (he - p.y - 0.5 * ik) / 3.; let v = p.x * ik * ik * 0.25; let h = v * v - u * u * u; let r = sqrt(abs(h)); var x: f32 = select(2. * cos(atan(r / v) / 3.) * sqrt(u), pow(v + r, 1. / 3.) - pow(abs(v - r), 1. / 3.) * sign(r - v), h > 0.0); x = min(x, wi); return length(p - vec2f(x, he - x * x / ik)) * sign(ik * (p.y - he) + p.x * p.x); } fn sdBezier(p: vec2f, A: vec2f, B: vec2f, C: vec2f) -> vec2f { let a = B - A; let b = A - 2. * B + C; let c = a * 2.; let d = A - p; let kk = 1. / dot(b, b); let kx = kk * dot(a, b); let ky = kk * (2. * dot(a, a) + dot(d, b)) / 3.; let kz = kk * dot(d, a); let p1 = ky - kx * kx; let p3 = p1 * p1 * p1; let q = kx * (2.0 * kx * kx - 3.0 * ky) + kz; var h: f32 = q * q + 4. * p3; var res: vec2f; if (h >= 0.) { h = sqrt(h); let x = (vec2f(h, -h) - q) / 2.; let uv = sign(x) * pow(abs(x), vec2f(1. / 3.)); let t = clamp(uv.x + uv.y - kx, 0., 1.); let f = d + (c + b * t) * t; res = vec2f(dot(f, f), t); } else { let z = sqrt(-p1); let v = acos(q / (p1 * z * 2.)) / 3.; let m = cos(v); let n = sin(v) * 1.732050808; let t = clamp(vec2f(m + m, -n - m) * z - kx, vec2f(0.0), vec2f(1.0)); let f = d + (c + b * t.x) * t.x; var dis: f32 = dot(f, f); res = vec2f(dis, t.x); let g = d + (c + b * t.y) * t.y; dis = dot(g, g); res = select(res, vec2f(dis, t.y), dis < res.x); } res.x = sqrt(res.x); return res; } fn sdBlobbyCross(pos: vec2f, he: f32) -> f32 { var p: vec2f = abs(pos); p = vec2f(abs(p.x - p.y), 1. - p.x - p.y) / sqrt(2.); let u = (he - p.y - 0.25 / he) / (6. * he); let v = p.x / (he * he * 16.); let h = v * v - u * u * u; var x: f32; var y: f32; if (h > 0.) { let r = sqrt(h); x = pow(v + r, 1. / 3.) - pow(abs(v - r), 1. / 3.) * sign(r - v); } else { let r = sqrt(u); x = 2. * r * cos(acos(v / (u * r)) / 3.); } x = min(x, sqrt(2.) / 2.); let z = vec2f(x, he * (1. - 2. * x * x)) - p; return length(z) * sign(z.y); } @compute @workgroup_size(16, 16) fn main_image(@builtin(global_invocation_id) id: vec3) { let screen_size = textureDimensions(screen); if (id.x >= screen_size.x || id.y >= screen_size.y) { return; } let fragCoord = vec2f(f32(id.x) + .5, f32(screen_size.y - id.y) - .5); let uv = (2.*fragCoord - vec2f(screen_size)) / f32(min(screen_size.x, screen_size.y)); var d: f32; let p = uv * 1.2; let t = i32(time.elapsed % 34); if (t == 0) { d = sdCircle(p, 1.); } else if (t == 1) { d = sdRoundedBox(p, vec2(0.5, 1.), vec4(0., .1, .2, .3)); } else if (t == 2) { d = sdBox(p, vec2(1.1, .8)); } else if (t == 3) { d = sdOrientedBox(p, vec2(-.9, -.5), vec2(.9, .5), 0.5); } else if (t == 4) { d = sdSegment(p, vec2(-.9,-.5), vec2(0.9, .5)) - .3; } else if (t == 5) { d = sdRhombus(p, vec2(1.2, .7)); } else if (t == 6) { d = sdTrapezoid(p, 1., .6, .4); } else if (t == 7) { d = sdParallelogram(p, .8, .5, .3); } else if (t == 8) { d = sdEquilateralTriangle(p+ vec2(.0,.2)); } else if (t == 9) { d = sdTriangleIsosceles(p+ vec2(.0,-.6), vec2(.8, -1.2)); } else if (t == 10) { d = sdTriangle(p, vec2(-.5, -.5), vec2(.5, -.5), vec2(0., .5)); } else if (t == 11) { d = sdUnevenCapsule(p, .6, .3, .6); } else if (t == 12) { d = sdPentagon(p, .8); } else if (t == 13) { d = sdHexagon(p, .8); } else if (t == 14) { d = sdOctogon(p, .8); } else if (t == 15) { d = sdHexagram(p, .5); } else if (t == 16) { d = sdStar5(p, .9, .4); } else if (t == 17) { d = sdStar(p, .9, 9u, 5.); } else if (t == 18) { d = sdPie(p + vec2(0.,.5), vec2(sin(.5), cos(.5)), 1.1); } else if (t == 19) { d = sdArc(p, vec2(sin(.2), cos(.2)), vec2(sin(1.8), cos(1.8)), .9, .2); } else if (t == 20) { d = sdHorseshoe(p + vec2(0.,-.5), vec2(sin(2.4), cos(2.4)), 1.1, .8, .2); } else if (t == 21) { d = sdVesica(p*.6, .5, .2)/.6; } else if (t == 22) { d = sdMoon(p, .5, 1., .8); } else if (t == 23) { d = sdRoundedCross(p, .5) - .2; }// else if (t == 24) { d = sdEgg(p, .6, .2); } else if (t == 25) { d = sdHeart(p+vec2(0.,.5)); } else if (t == 26) { d = sdCross(p, vec2(.8, .2)); } else if (t == 27) { d = sdRoundedX(p, .8, .2); } else if (t == 28) { var A = array, 5>(vec2(-.5, -.8), vec2(.0, 1.), vec2(.5, -.8), vec2(-.8, .4), vec2(.8, .4)); d = sdPolygon(p, &A); } else if (t == 29) { d = sdEllipse(p*.8, vec2(.8, .5))/.8; } else if (t == 30) { d = sdParabola(p, .5); } else if (t == 31) { d = sdParabolaSegment(p, .5, .2); } else if (t == 32) { d = sdBezier(p, vec2(1.5, 0.3), vec2(-2., -1.), vec2(-1., .4)).x; } else { d = sdBlobbyCross(p, .6) - .2; } var col = vec3f(1.0) - sign(d)*vec3f(0.1,0.4,0.7); col *= 1.0 - exp(-2.0*abs(d)); col *= 0.8 + 0.2*cos(120.0*d); col = mix( col, vec3f(1.0), 1.0-smoothstep(0.0,0.01,abs(d)) ); textureStore(screen, id.xy, vec4f(col*col, 1.)); } ` } }); const uniformBuffer = device.createBuffer({ viewOrSize: 2 * Float32Array.BYTES_PER_ELEMENT, usage: BufferUsage.UNIFORM }); uniformBuffer.setSubData(0, new Uint8Array(new Float32Array([0]).buffer)); const computePipeline = device.createComputePipeline({ inputLayout: null, program: computeProgram }); const bindings = device.createBindings({ pipeline: computePipeline, uniformBufferBindings: [ { binding: 0, buffer: uniformBuffer } ], storageTextureBindings: [ { binding: 0, texture: screen } ] }); const renderTarget = device.createRenderTarget({ format: Format.U8_RGBA_RT, width: $canvas.width, height: $canvas.height }); device.setResourceName(renderTarget, "Main Render Target"); let id; let t = 0; const frame = (time) => { uniformBuffer.setSubData( 0, new Uint8Array(new Float32Array([t, time / 1000]).buffer) ); device.beginFrame(); const computePass = device.createComputePass(); computePass.setPipeline(computePipeline); computePass.setBindings(bindings); computePass.dispatchWorkgroups( Math.floor($canvas.width / 16), Math.floor($canvas.height / 16) ); device.submitPass(computePass); device.endFrame(); /** * An application should call getCurrentTexture() in the same task that renders to the canvas texture. * Otherwise, the texture could get destroyed by these steps before the application is finished rendering to it. */ const onscreenTexture = swapChain.getOnscreenTexture(); device.beginFrame(); const renderPass = device.createRenderPass({ colorAttachment: [renderTarget], colorResolveTo: [onscreenTexture], colorClearColor: [TransparentWhite] }); renderPass.setPipeline(blitPipeline); renderPass.setBindings(blitBindings); renderPass.setViewport(0, 0, $canvas.width, $canvas.height); renderPass.draw(3); device.submitPass(renderPass); device.endFrame(); ++t; id = requestAnimationFrame(frame); }; frame(0); invalidation.then(() => { if (id) { cancelAnimationFrame(id); } blitBindings.destroy(); computeProgram.destroy(); screen.destroy(); uniformBuffer.destroy(); blitPipeline.destroy(); computePipeline.destroy(); renderTarget.destroy(); device.destroy(); // For debug. device.checkForLeaks(); }); return $canvas; })()31:[] 2e:{"id":"c4500868ad857b51","slug":"sdf-2d","title":"SDF 2D","thumbnail":"a66e7ee0ffafc20868be61a2bfff1180d48ba9cfb25acab6e8394881c72a304a","access_level":"public","create_time":"$D2023-12-24T04:26:08.315Z","update_time":"$D2024-03-19T11:34:01.974Z","view_time":null,"first_public_time":"$D2023-12-24T04:26:08.315Z","fork":{"id":"d2ed478bb7757a7f","slug":"simplex-noise","title":"Simplex Noise","owner":{"id":"96a4168c70a60e69","login":"antv","name":"AntV"}},"stars":1,"starred":false,"owner":{"type":"team","id":"96a4168c70a60e69","login":"antv","name":"AntV","avatar_url":"https://avatars-next.observableusercontent.com/9cfb1b3742d5fee0ae1105c158818aad1b91fd02751860be879c813cbaac3abf","tier":"starter_2024"},"version":85,"publish_version":null,"role":null,"authored":false,"authors":[{"type":"individual","id":"bf67d760eefcbffd","login":"xiaoiver","name":"","avatar_url":"https://avatars-next.observableusercontent.com/f4a568df4cb69f834e43d657ac3e7239ed96aac8fb20e8c31c9c1ddcdf8b54a0","tier":null}],"members":[{"type":"team","id":"96a4168c70a60e69","login":"antv","name":"AntV","avatar_url":"https://avatars-next.observableusercontent.com/9cfb1b3742d5fee0ae1105c158818aad1b91fd02751860be879c813cbaac3abf","tier":"starter_2024","role":"editor"},{"type":"individual","id":"bf67d760eefcbffd","login":"xiaoiver","name":"","avatar_url":"https://avatars-next.observableusercontent.com/f4a568df4cb69f834e43d657ac3e7239ed96aac8fb20e8c31c9c1ddcdf8b54a0","tier":null,"role":"editor"}],"comments":[],"custom_thumbnail":true,"trashed":false,"subscribed":null,"forks":0,"collection":null,"type":"notebook","body":{"title":"SDF 2D","cells":[{"id":0,"value":"# SDF 2D\n\nhttps://compute.toys/view/398\n\nhttps://iquilezles.org/articles/distfunctions/\n\nWe use 2D SDF rendering Circle, Ellipse and Rect in `@antv/g`.","pinned":false,"hidden":false,"mode":"md","author":"$undefined","summary":"$undefined"},{"id":17,"value":"$30","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":5,"value":"## Appendix","pinned":false,"hidden":false,"mode":"md","author":"$undefined","summary":"$undefined"},{"id":55,"value":"import {\n deviceAPI,\n createDeviceContributionWebGPU,\n createCanvas,\n createBlitPipelineAndBindings,\n registerShaderModule,\n createProgram,\n alias,\n prelude\n} from \"@antv/compute-toys\"","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"}],"files":"$W31","stdlib":"1","titling":"auto"}} 2f:"$2e:body"