playcanvas/build/playcanvas/src/platform/graphics/gpu-profiler.js

Open-source WebGL/WebGPU 3D engine for the web

import { TRACEID_GPU_TIMINGS } from "../../core/constants.js";
import { Tracing } from "../../core/tracing.js";
class GpuProfiler {
	frameAllocations = [];
	pastFrameAllocations = /* @__PURE__ */ new Map();
	_enabled = false;
	_enableRequest = false;
	_frameTime = 0;
	_passTimings = /* @__PURE__ */ new Map();
	_nameCache = /* @__PURE__ */ new Map();
	maxCount = 9999;
	loseContext() {
		this.pastFrameAllocations.clear();
	}
	set enabled(value) {
		this._enableRequest = value;
	}
	get enabled() {
		return this._enableRequest;
	}
	get passTimings() {
		return this._passTimings;
	}
	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 = [];
	}
	_parsePassName(name) {
		let parsedName = this._nameCache.get(name);
		if (parsedName === void 0) {
			if (name.startsWith("RenderPass")) {
				parsedName = name.substring(10);
			} else {
				parsedName = name;
			}
			this._nameCache.set(name, parsedName);
		}
		return parsedName;
	}
	report(renderVersion, timings) {
		if (timings) {
			const allocations = this.pastFrameAllocations.get(renderVersion);
			if (!allocations) {
				return;
			}
			if (timings.length > 0) {
				this._frameTime = timings.reduce((sum, t) => sum + t, 0);
			}
			this._passTimings.clear();
			for (let i = 0; i < allocations.length; ++i) {
				const name = allocations[i];
				const timing = timings[i];
				const parsedName = this._parsePassName(name);
				this._passTimings.set(parsedName, (this._passTimings.get(parsedName) || 0) + timing);
			}
			if (Tracing.get(TRACEID_GPU_TIMINGS)) {
				let total = 0;
				for (let i = 0; i < allocations.length; ++i) {
					const name = allocations[i];
					total += timings[i];
				}
			}
		}
		this.pastFrameAllocations.delete(renderVersion);
	}
	getSlot(name) {
		if (this.frameAllocations.length >= this.maxCount) {
			return -1;
		}
		const slot = this.frameAllocations.length;
		this.frameAllocations.push(name);
		return slot;
	}
	get slotCount() {
		return this.frameAllocations.length;
	}
}
export {
	GpuProfiler
};