61 lines
2 KiB
TypeScript
61 lines
2 KiB
TypeScript
import type { Framebuffer } from "../engine/render/Framebuffer"
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import type { RenderConfig } from "../engine/render/RenderConfig"
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import { renderBand, type Scene } from "./renderScene"
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/** One-time setup: shared framebuffer + control/param buffers, the (cloned)
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* scene, this worker's row band, and its index into the per-worker times array. */
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type Init = {
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colorSAB: SharedArrayBuffer
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depthSAB: SharedArrayBuffer
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width: number
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height: number
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scene: Scene
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band: [number, number]
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config: RenderConfig
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skyStep: number
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ctrlSAB: SharedArrayBuffer
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camSAB: SharedArrayBuffer
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vpSAB: SharedArrayBuffer
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visSAB: SharedArrayBuffer
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timesSAB: SharedArrayBuffer
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index: number
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}
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const FRAME = 0
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const DONE = 1
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const VIS = 2
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const ctx = globalThis as unknown as {
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addEventListener: (type: "message", handler: (e: { data: Init }) => void) => void
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}
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ctx.addEventListener("message", (e) => {
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const m = e.data
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const fb: Framebuffer = {
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width: m.width,
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height: m.height,
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color: new Uint32Array(m.colorSAB),
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depth: new Float32Array(m.depthSAB),
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}
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const ctrl = new Int32Array(m.ctrlSAB)
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const cam = new Float64Array(m.camSAB)
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const vp = new Float32Array(m.vpSAB)
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const vis = new Int32Array(m.visSAB)
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const times = new Float64Array(m.timesSAB)
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const { scene, band, config, skyStep, index } = m
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// Lock-free frame loop: block until main bumps the frame counter, render this
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// band, record the band time, and signal done. No messages per frame.
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let last = 0
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for (;;) {
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Atomics.wait(ctrl, FRAME, last)
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last = Atomics.load(ctrl, FRAME)
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const t0 = performance.now()
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const camera = { position: { x: cam[0], y: cam[1], z: cam[2] }, yaw: cam[3], pitch: cam[4], fov: cam[5] }
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const count = Atomics.load(ctrl, VIS)
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const visible = [...vis.subarray(0, count)]
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renderBand(fb, scene, camera, vp, visible, config, skyStep, cam[6], band[0], band[1])
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times[index] = performance.now() - t0
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Atomics.add(ctrl, DONE, 1)
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}
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})
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