@animech-public/playcanvas/build/playcanvas.prf/src/platform/graphics/gpu-profiler.js

PlayCanvas WebGL game engine

import { TRACEID_GPU_TIMINGS } from '../../core/constants.js';
import { Tracing } from '../../core/tracing.js';

class GpuProfiler {
	constructor() {
		this.frameAllocations = [];
		this.pastFrameAllocations = new Map();
		this._enabled = false;
		this._enableRequest = false;
		this._frameTime = 0;
	}
	loseContext() {
		this.pastFrameAllocations.clear();
	}
	set enabled(value) {
		this._enableRequest = value;
	}
	get enabled() {
		return this._enableRequest;
	}
	processEnableRequest() {
		if (this._enableRequest !== this._enabled) {
			this._enabled = this._enableRequest;
			if (!this._enabled) {
				this._frameTime = 0;
			}
		}
	}
	request(renderVersion) {
		this.pastFrameAllocations.set(renderVersion, this.frameAllocations);
		this.frameAllocations = [];
	}
	report(renderVersion, timings) {
		if (timings) {
			const allocations = this.pastFrameAllocations.get(renderVersion);
			if (timings.length > 0) {
				this._frameTime = timings[0];
			}
			if (Tracing.get(TRACEID_GPU_TIMINGS)) {
				for (let i = 0; i < allocations.length; ++i) {
					allocations[i];
				}
			}
		}
		this.pastFrameAllocations.delete(renderVersion);
	}
	getSlot(name) {
		const slot = this.frameAllocations.length;
		this.frameAllocations.push(name);
		return slot;
	}
	get slotCount() {
		return this.frameAllocations.length;
	}
}

export { GpuProfiler };