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756541939a
Add a CLI under frontend/performance/benches/render_wasm that builds the renderer, runs seeded scenes (rects, plus, paths, masks) in headless Chromium and saves per-case timings. - build, run: prepare or reuse builds; measure cases with warmups, repetitions, deadlines - ab: build and compare Cargo feature configurations - compare, merge: median changes with bootstrap CIs between saved runs, guarded by scene, build and settings checks - purge: delete managed builds, runs or comparisons - GPU runs through `run-devenv --gpu` Lint, format and pnpm scripts now cover performance/ and its tests. AI-assisted-by: gpt-6.1-sol, deepseek-flash, muse-spark, glm-5.3, gpt6-astra, claude-5.5-sonnet, claude-haiku-5.5
74 lines
2.5 KiB
Clojure
74 lines
2.5 KiB
Clojure
;; This Source Code Form is subject to the terms of the Mozilla Public
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;; License, v. 2.0. If a copy of the MPL was not distributed with this
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;; file, You can obtain one at http://mozilla.org/MPL/2.0/.
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;;
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;; Copyright (c) KALEIDOS SUBSIDIARY SL
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(ns benches.render-wasm.random
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"Seeded numbers for reproducible scene construction and report resampling.
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A seed is an integer from 0 through 4294967295. Each call to `create` owns a
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separate Mulberry32 state. Calling the returned function advances that state
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and returns a number in [0,1). Equal seeds and equal numbers of calls produce
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equal sequences, including seed zero."
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(:require
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[app.common.types.color :as clr]
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[app.common.uuid :as uuid]))
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(defn seed?
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"Returns true for integers from 0 through 4294967295, inclusive."
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[value]
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(and (integer? value) (<= 0 value 4294967295)))
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(defn create
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"Returns a function that draws seeded numbers from [0, 1) using Mulberry32.
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Each function owns its state. A seed outside the uint32 range throws
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::invalid-seed; uint32 means an integer from 0 through 4294967295."
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[seed]
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(when-not (seed? seed)
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(throw (ex-info "random seed must be an integer in [0, 2^32)"
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{:type ::invalid-seed :seed seed})))
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(let [state (volatile! (bit-or seed 0))]
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(fn []
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(let [s (bit-or (+ @state 0x6d2b79f5) 0)
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_ (vreset! state s)
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v (js/Math.imul (bit-xor s (unsigned-bit-shift-right s 15))
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(bit-or s 1))
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v (bit-xor v (+ v (js/Math.imul (bit-xor v (unsigned-bit-shift-right v 7))
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(bit-or v 61))))
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v (bit-xor v (unsigned-bit-shift-right v 14))]
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(/ (unsigned-bit-shift-right v 0) 4294967296)))))
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(defn round3
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"Rounds to 3 decimal places"
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[value]
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(/ (js/Math.round (* 1000 value)) 1000))
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(defn rng-float
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"Draws a float in `[min, max)` from the random source."
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[rng min max]
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(+ min (* (rng) (- max min))))
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(defn rng-int
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"Draws an integer in `[min, max)` from the random source."
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[rng min max]
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(js/Math.floor (rng-float rng min max)))
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(defn rng-uuid
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"Draws a deterministic uuid from two 32-bit values of the random source."
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[rng]
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(uuid/custom (rng-int rng 0 4294967296)
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(rng-int rng 0 4294967296)))
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(defn rng-hex-color
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"Draws a hex color from three RGB channels in [0,256)."
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[rng]
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(clr/rgb->hex [(rng-int rng 0 256) (rng-int rng 0 256) (rng-int rng 0 256)]))
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(defn rng-opacity
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"Draws opacity in [0.1,0.999], rounded to three decimal places."
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[rng]
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(min 0.999 (round3 (rng-float rng 0.1 1))))
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