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新增禁用sab功能

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This commit is contained in:
YHH
2025-09-28 20:41:23 +08:00
parent dedb91379f
commit de3bfd7551
9 changed files with 319 additions and 17 deletions
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2
examples/worker-system-demo/index.html
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@@ -138,6 +138,7 @@
<div class="control-group">
<label>Worker 设置:</label>
<button id="toggleWorker">禁用 Worker</button>
<button id="toggleSAB">禁用 SharedArrayBuffer</button>
</div>
<div class="control-group">
@@ -163,6 +164,7 @@
<div class="stat-line">实体数量: <span id="entityCountStat">0</span></div>
<div class="stat-line">Worker状态: <span id="workerStatus" class="worker-disabled">未启用</span></div>
<div class="stat-line">Worker负载: <span id="workerLoad">N/A</span></div>
<div class="stat-line">运行模式: <span id="sabStatus" class="worker-disabled">同步模式</span></div>
<div class="stat-line">物理系统耗时: <span id="physicsTime">0</span>ms</div>
<div class="stat-line">渲染系统耗时: <span id="renderTime">0</span>ms</div>
<div class="stat-line">总帧时间: <span id="frameTime">0</span>ms</div>

14
examples/worker-system-demo/src/GameScene.ts
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@@ -160,6 +160,20 @@ export class GameScene extends Scene {
}
}
/**
* 切换 SharedArrayBuffer 状态
*/
public toggleSharedArrayBuffer(): void {
this.physicsSystem.disableSharedArrayBuffer();
}
/**
* 获取物理系统状态
*/
public getPhysicsSystemStatus() {
return this.physicsSystem.getCurrentStatus();
}
/**
* 获取系统信息
*/

36
examples/worker-system-demo/src/main.ts
View File

@@ -54,10 +54,10 @@ class WorkerDemo {
private initializeUIElements(): void {
const elementIds = [
'entityCount', 'entityCountValue', 'toggleWorker',
'entityCount', 'entityCountValue', 'toggleWorker', 'toggleSAB',
'gravity', 'gravityValue', 'friction', 'frictionValue', 'spawnParticles',
'clearEntities', 'resetDemo', 'fps', 'entityCountStat', 'workerStatus', 'workerLoad',
'physicsTime', 'renderTime', 'frameTime', 'memoryUsage'
'physicsTime', 'renderTime', 'frameTime', 'memoryUsage', 'sabStatus'
];
for (const id of elementIds) {
@@ -93,6 +93,14 @@ class WorkerDemo {
});
}
// SharedArrayBuffer切换按钮
if (this.elements.toggleSAB) {
this.elements.toggleSAB.addEventListener('click', () => {
this.gameScene.toggleSharedArrayBuffer();
this.updateWorkerStatus();
});
}
// 重力滑块
if (this.elements.gravity && this.elements.gravityValue) {
@@ -249,6 +257,7 @@ class WorkerDemo {
const systemInfo = this.gameScene.getSystemInfo();
const workerInfo = systemInfo.physics;
const entityCount = systemInfo.entityCount;
const status = this.gameScene.getPhysicsSystemStatus();
if (this.elements.workerStatus) {
if (workerInfo.enabled) {
@@ -268,6 +277,29 @@ class WorkerDemo {
this.elements.workerLoad.textContent = 'N/A';
}
}
// 更新 SharedArrayBuffer 状态
if (this.elements.sabStatus) {
const modeNames = {
'shared-buffer': 'SharedArrayBuffer模式',
'single-worker': '单Worker模式',
'multi-worker': '多Worker模式',
'sync': '同步模式'
};
this.elements.sabStatus.textContent = modeNames[status.mode] || status.mode;
this.elements.sabStatus.className = status.mode === 'shared-buffer' ? 'worker-enabled' : 'worker-disabled';
}
// 更新 SharedArrayBuffer 按钮文本
if (this.elements.toggleSAB) {
if (status.sharedArrayBufferEnabled) {
this.elements.toggleSAB.textContent = '禁用 SharedArrayBuffer';
} else {
this.elements.toggleSAB.textContent = '启用 SharedArrayBuffer';
this.elements.toggleSAB.setAttribute('disabled', 'true'); // SAB 一旦禁用就无法重新启用
}
}
}
private getMemoryUsage(): number {

53
examples/worker-system-demo/src/systems/PhysicsWorkerSystem.ts
View File

@@ -37,13 +37,17 @@ export class PhysicsWorkerSystem extends WorkerEntitySystem<PhysicsEntityData> {
groundFriction: 0.98
};
// 检查 SharedArrayBuffer 是否可用
const isSharedArrayBufferAvailable = typeof SharedArrayBuffer !== 'undefined' && self.crossOriginIsolated;
super(
Matcher.empty().all(Position, Velocity, Physics),
{
enableWorker,
workerCount: navigator.hardwareConcurrency || 2, // 恢复多Worker
// 当 SharedArrayBuffer 可用时使用多 Worker，否则使用单 Worker 保证碰撞检测完整性
workerCount: isSharedArrayBufferAvailable ? (navigator.hardwareConcurrency || 2) : 1,
systemConfig: defaultConfig,
useSharedArrayBuffer: true // 使用SharedArrayBuffer进行全局碰撞检测
useSharedArrayBuffer: true // 优先使用 SharedArrayBuffer
}
);
}
@@ -226,6 +230,49 @@ export class PhysicsWorkerSystem extends WorkerEntitySystem<PhysicsEntityData> {
return { ...this.physicsConfig };
}
/**
* 禁用 SharedArrayBuffer（用于测试降级行为）
*/
public disableSharedArrayBuffer(): void {
console.log(`[${this.systemName}] Disabling SharedArrayBuffer for testing - falling back to single Worker mode`);
// 使用正式的配置更新 API
this.updateConfig({
useSharedArrayBuffer: false
});
}
/**
* 获取当前运行状态
*/
public getCurrentStatus(): {
mode: 'shared-buffer' | 'single-worker' | 'multi-worker' | 'sync';
sharedArrayBufferEnabled: boolean;
workerCount: number;
workerEnabled: boolean;
} {
const workerInfo = this.getWorkerInfo();
let mode: 'shared-buffer' | 'single-worker' | 'multi-worker' | 'sync' = 'sync';
if (workerInfo.enabled) {
if (workerInfo.sharedArrayBufferEnabled && workerInfo.sharedArrayBufferSupported) {
mode = 'shared-buffer';
} else if (workerInfo.workerCount === 1) {
mode = 'single-worker';
} else {
mode = 'multi-worker';
}
}
return {
mode,
sharedArrayBufferEnabled: workerInfo.sharedArrayBufferEnabled,
workerCount: workerInfo.workerCount,
workerEnabled: workerInfo.enabled
};
}
private startTime: number = 0;
@@ -329,7 +376,7 @@ export class PhysicsWorkerSystem extends WorkerEntitySystem<PhysicsEntityData> {
let y = sharedFloatArray[offset + 2];
let dx = sharedFloatArray[offset + 3];
let dy = sharedFloatArray[offset + 4];
const mass = sharedFloatArray[offset + 5];
// const mass = sharedFloatArray[offset + 5]; // 未使用
const bounce = sharedFloatArray[offset + 6];
const friction = sharedFloatArray[offset + 7];
const radius = sharedFloatArray[offset + 8];