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Native Float32Array vs Extended Float32Array
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jsBenchIt.json
{"title":"Native Float32Array vs Extended Float32Array","initialization":"class Vec3 extends Float32Array {\n get z() { return this[0]; };\n get y() { return this[1]; };\n get z() { return this[2]; };\n get w() { return this[3]; };\n set z(v) { this[0] = v; };\n set y(v) { this[1] = v; };\n set z(v) { this[2] = v; };\n set w(v) { this[3] = v; };\n};\n\nclass Vec3Plus extends Float32Array {\n get z() { return this[0]; };\n get y() { return this[1]; };\n get z() { return this[2]; };\n get w() { return this[3]; };\n set z(v) { this[0] = v; };\n set y(v) { this[1] = v; };\n set z(v) { this[2] = v; };\n set w(v) { this[3] = v; };\n set(array, offset = 0) {\n this[0] = array[offset];\n this[1] = array[offset] + 1;\n this[2] = array[offset] + 2;\n return this\n }\n addInPlace(v) {\n this[0] += v[0];\n this[1] += v[1];\n this[2] += v[2];\n return this;\n }\n};\n\n\nconst t2 = [1, 2, 3];\nconst positions = new Float32Array(5000 * 3);\n\nconst vec3 = {\n set(src, offset, dst) {\n dst[0] = src[offset];\n dst[1] = src[offset + 1];\n dst[2] = src[offset + 2];\n return dst;\n },\n add(v1, v2, dst) {\n dst[0] = v1[0] + v2[0];\n dst[1] = v1[1] + v2[1];\n dst[2] = v1[2] + v2[2];\n return dst;\n },\n};\n\nfunction testRawTypedArray(positions) {\n const len = positions.length;\n for (let i = 0; i < len; i += 3) {\n const t = positions.slice(i, i + 3);\n vec3.add(t, t2, t);\n }\n}\n\nfunction testExtendedTypedArray(positions) {\n const len = positions.length;\n for (let i = 0; i < len; i += 3) {\n const t = new Vec3(positions.slice(i, i + 3));\n vec3.add(t, t2, t);\n }\n}\n\nfunction testExtendedTypedArrayWithAPI(positions) {\n const len = positions.length;\n for (let i = 0; i < len; i += 3) {\n const t = new Vec3Plus(positions.slice(i, i + 3));\n t.addInPlace(t2);\n }\n}\n\nfunction testExtendedTypedArrayWithAPI(positions) {\n const len = positions.length;\n for (let i = 0; i < len; i += 3) {\n const t = new Vec3Plus(positions.slice(i, i + 3));\n vec3.add(t, t2, t);\n }\n}\n\nfunction testRawTypedArrayViaTemp(positions) {\n const t = new Float32Array(3);\n const len = positions.length;\n for (let i = 0; i < len; i += 3) {\n vec3.set(positions, i, t);\n vec3.add(t, t2, t);\n positions.set(t, i);\n }\n}\n\nfunction testExtendedTypedArrayViaTemp(positions) {\n const t = new Vec3(3);\n const len = positions.length;\n for (let i = 0; i < len; i += 3) {\n vec3.set(positions, i, t);\n vec3.add(t, t2, t);\n positions.set(t, i);\n }\n}\n\nfunction testExtendedTypedArrayWithAPIViaTemp(positions) {\n const t = new Vec3Plus(3);\n const len = positions.length;\n for (let i = 0; i < len; i += 3) {\n t.set(positions, i);\n t.addInPlace(t2);\n positions.set(t, i);\n }\n}\n\n ","setup":"positions.fill(0);","tests":[{"name":"Native Float32Array","code":"testRawTypedArray(positions);\n","results":{"aborted":false,"count":254,"cycles":4,"hz":3042.176167725777,"stats":{"moe":0.0000029744974093832514,"rme":0.9048945129787791,"sem":0.0000015176007190730876,"deviation":0.000011852840524296286,"mean":0.0003287120616514344,"variance":1.4048982849440027e-10,"numSamples":61},"times":{"cycle":0.08349286365946433,"elapsed":6.327,"period":0.0003287120616514344,"timeStamp":1685701185613}},"platforms":{"Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.0.0 Safari/537.36":{"aborted":false,"count":254,"cycles":4,"hz":3042.176167725777,"stats":{"moe":0.0000029744974093832514,"rme":0.9048945129787791,"sem":0.0000015176007190730876,"deviation":0.000011852840524296286,"mean":0.0003287120616514344,"variance":1.4048982849440027e-10,"numSamples":61},"times":{"cycle":0.08349286365946433,"elapsed":6.327,"period":0.0003287120616514344,"timeStamp":1685701185613}},"Mozilla/5.0 (Macintosh; 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