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Andras Schmelczer 2026-05-21 20:33:49 +01:00
parent 6bc125be1c
commit ed5a4379db
76 changed files with 1418 additions and 988 deletions
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35
src/game-loop/gpu-profiler.ts
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@ -16,11 +16,6 @@ interface GpuProfilerSample {
totalPassMs: number;
}
interface FleetingGardenPerf {
latest?: GpuProfilerSample;
samples: Array<GpuProfilerSample>;
}
interface ActivePass {
endQueryIndex: number;
name: GpuPassName;
@ -32,33 +27,29 @@ interface ReadbackSlot {
state: 'idle' | 'encoding' | 'mapping';
}
declare global {
interface Window {
__fleetingGardenPerf?: FleetingGardenPerf;
}
}
const MAX_QUERY_COUNT = PASS_NAMES.length * 2;
const QUERY_BYTES = BigUint64Array.BYTES_PER_ELEMENT;
const READBACK_SLOT_COUNT = 4;
const MAX_SAMPLE_COUNT = 600;
export class GpuProfiler {
private readonly querySet: GPUQuerySet;
private readonly resolveBuffer: GPUBuffer;
private readonly readbackSlots: Array<ReadbackSlot>;
private readonly isEnabled: () => boolean;
private activePasses: Array<ActivePass> = [];
private nextQueryIndex = 0;
private frame = 0;
private latestSample: GpuProfilerSample | null = null;
public static create(device: GPUDevice): GpuProfiler | null {
public static create(device: GPUDevice, isEnabled: () => boolean): GpuProfiler | null {
if (!device.features.has('timestamp-query')) {
return null;
}
return new GpuProfiler(device);
return new GpuProfiler(device, isEnabled);
}
private constructor(device: GPUDevice) {
private constructor(device: GPUDevice, isEnabled: () => boolean) {
this.isEnabled = isEnabled;
this.querySet = device.createQuerySet({
type: 'timestamp',
count: MAX_QUERY_COUNT,
@ -85,6 +76,9 @@ export class GpuProfiler {
public timestampWrites(
name: GpuPassName
): (GPUComputePassTimestampWrites & GPURenderPassTimestampWrites) | undefined {
if (!this.isEnabled()) {
return undefined;
}
if (this.nextQueryIndex + 1 >= MAX_QUERY_COUNT) {
return undefined;
}
@ -146,6 +140,10 @@ export class GpuProfiler {
});
}
public get latestTotalPassMs(): number | undefined {
return this.latestSample?.totalPassMs;
}
private publishSample(
frame: number,
passes: Array<ActivePass>,
@ -170,11 +168,6 @@ export class GpuProfiler {
sample.totalPassMs += elapsedMs;
});
const perf = (window.__fleetingGardenPerf ??= { samples: [] });
perf.latest = sample;
perf.samples.push(sample);
if (perf.samples.length > MAX_SAMPLE_COUNT) {
perf.samples.splice(0, perf.samples.length - MAX_SAMPLE_COUNT);
}
this.latestSample = sample;
}
}