136 lines
4.3 KiB
Svelte
136 lines
4.3 KiB
Svelte
<script lang="ts">
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import { onMount } from 'svelte';
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import Chart from 'chart.js/auto';
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// 可调整的更新频率（毫秒）
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const UPDATE_INTERVAL = 300;
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const TIME_WINDOW = 1000 * 15;
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let frameCount = 0;
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let lastTime = 0;
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let fps = 0;
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let frameTimes: number[] = [];
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let frameTime = 0;
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let onePercentLow = 0;
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let fpsChart: Chart;
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let frameTimeChart: Chart;
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let lastFrameTime = 0;
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function updateFPS() {
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const currentTime = performance.now();
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const deltaTime = currentTime - lastTime;
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frameTime = currentTime - lastFrameTime;
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// 计算1% Low FPS
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const sortedFrameTimes = frameTimes.sort((a, b) => b - a);
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const onePercentIndex = Math.floor(sortedFrameTimes.length * 0.01);
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onePercentLow = Math.round(1000 / sortedFrameTimes[onePercentIndex]);
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if (frameTimeChart) {
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if ((frameTimeChart.data.labels![0] as number) < Date.now() - 5000) {
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frameTimeChart.data.labels!.shift();
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frameTimeChart.data.datasets[0].data.shift();
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}
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frameTimeChart.data.labels!.push(Date.now());
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frameTimeChart.data.datasets[0].data.push(frameTime);
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}
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if (deltaTime > UPDATE_INTERVAL) {
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fps = Math.round((frameCount * 1000) / deltaTime);
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// 更新图表数据
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if (fpsChart) {
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if ((fpsChart.data.labels![0] as number) < Date.now() - TIME_WINDOW) {
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fpsChart.data.labels!.shift();
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fpsChart.data.datasets[0].data.shift();
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}
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fpsChart.data.labels!.push(Date.now());
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fpsChart.data.datasets[0].data.push(fps);
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fpsChart.update();
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}
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if (frameTimeChart) {
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frameTimeChart.update();
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}
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frameCount = 0;
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lastTime = currentTime;
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}
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frameCount++;
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frameTimes.push(frameTime);
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lastFrameTime = performance.now();
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requestAnimationFrame(updateFPS);
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}
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const createChart = (ctx: CanvasRenderingContext2D, label: string, color: string) => {
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return new Chart(ctx, {
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type: 'line',
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data: {
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labels: [],
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datasets: [
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{
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label: label,
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borderColor: color,
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data: [],
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pointRadius: 0,
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borderWidth: label == 'FPS' ? undefined : 2,
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tension: label == 'FPS' ? 0.1 : 0,
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}
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]
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},
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options: {
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scales: {
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x: {
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display: false
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},
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y: {
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beginAtZero: false,
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ticks: {
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padding: 0
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},
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border: {
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display: false
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}
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}
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},
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plugins: {
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legend: {
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display: false
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}
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},
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interaction: {
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mode: 'x'
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},
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animations: {
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y: {
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duration: 0
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},
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x: {
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duration: label == 'FPS' ? undefined : 0,
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}
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}
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}
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});
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};
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onMount(() => {
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const ctx1 = (document.getElementById('fpsChart')! as HTMLCanvasElement).getContext('2d')!;
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const ctx2 = (document.getElementById('frameTimeChart')! as HTMLCanvasElement).getContext('2d')!;
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fpsChart = createChart(ctx1, 'FPS', '#4CAF50');
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frameTimeChart = createChart(ctx2, 'Frame Time', '#2196F3');
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updateFPS();
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});
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</script>
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<p>
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<span>{fps} fps</span><br />
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<span>Frame Time: {frameTime.toFixed(2)} ms</span><br />
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<span>1% Low: {onePercentLow} fps</span>
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</p>
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<span class="fixed right-2 text-white/50">fps</span>
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<canvas id="fpsChart" width="400" height="100" class="mt-2"></canvas>
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<span class="fixed right-2 text-white/50">frametime</span>
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<canvas id="frameTimeChart" width="400" height="100" class="mt-2"></canvas>
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