示例代码

using System;
using System.Text;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Profiling;
/// <summary>
/// GUI stats.
/// 性能统计窗口
/// </summary>
public class GUIStats : MonoBehaviour {

	Rect windowRect = new Rect (50, 20, 250, 250);
	GUIStyle labelStyle;
	GUIStyle fpsStyle;
	GUIStyle memStyle;
	GUIStyle sysStyle;
	string sysinfo = "";

	bool IsShowMem = false;
	bool IsShowScreen = false;
	bool IsShowSysInfo = false;

	void Start () {
		labelStyle = new GUIStyle();
		labelStyle.normal.background = null;
		labelStyle.normal.textColor = new Color(0.0f, 1.0f, 0.0f);
		labelStyle.fontSize = 12;

		fpsStyle = new GUIStyle();
		fpsStyle.normal.background = null;
		fpsStyle.normal.textColor = new Color(1.0f, 0.0f, 0.0f);
		fpsStyle.fontSize = 12;

		memStyle = new GUIStyle();
		memStyle.normal.background = null;
		memStyle.normal.textColor = new Color(1.0f, 0.3f, 0.0f);
		memStyle.fontSize = 12;

		sysStyle = new GUIStyle();
		sysStyle.normal.background = null;
		sysStyle.normal.textColor = new Color(1.0f, 1.0f, 1.0f);
		sysStyle.fontSize = 12;

		StringBuilder sb = new StringBuilder();
		sb.AppendLine("设备信息");
		sb.AppendLine("操作系统名称: " + SystemInfo.operatingSystem);
		sb.AppendLine("处理器名称: " + SystemInfo.processorType);
		sb.AppendLine("处理器数量: " + SystemInfo.processorCount);
		sb.AppendLine("当前系统内存大小: " + SystemInfo.systemMemorySize + "MB");
		sb.AppendLine("当前显存大小: " + SystemInfo.graphicsMemorySize + "MB");
		sb.AppendLine("显卡名字: " + SystemInfo.graphicsDeviceName);
		sb.AppendLine("显卡厂商: " + SystemInfo.graphicsDeviceVendor);
		sb.AppendLine("显卡的标识符代码: " + SystemInfo.graphicsDeviceID);
		sb.AppendLine("显卡厂商的标识符代码: " + SystemInfo.graphicsDeviceVendorID);
		sb.AppendLine("该显卡所支持的图形API版本: " + SystemInfo.graphicsDeviceVersion);
		sb.AppendLine("图形设备着色器性能级别: " + SystemInfo.graphicsShaderLevel);
		//sb.AppendLine("显卡的近似像素填充率: " + SystemInfo.graphicsPixelFillrate);
		sb.AppendLine("是否支持内置阴影: " + SystemInfo.supportsShadows);
		//sb.AppendLine("是否支持渲染纹理: " + SystemInfo.supportsRenderTextures);
		sb.AppendLine("是否支持图像效果: " + SystemInfo.supportsImageEffects);
		sb.AppendLine("设备唯一标识符: " + SystemInfo.deviceUniqueIdentifier);
		sb.AppendLine("用户定义的设备的名称: " + SystemInfo.deviceName);
		sb.AppendLine("设备的模型: " + SystemInfo.deviceModel);
		sysinfo = sb.ToString ();
	}

	void OnGUI () {
		windowRect.width = 150;
		windowRect.height = 25;
		//宽度和高度根据内容自适应
		windowRect = GUILayout.Window (0, windowRect, DrawWindow, "<color=yellow>Statistics</color>", GUILayout.ExpandWidth(true), GUILayout.ExpandHeight (true));
	}

	void DrawWindow (int windowID) 
	{
		GUILayout.BeginVertical ("box", GUILayout.ExpandHeight (true));
		DrawFPS();
		if (IsShowMem)
			DrawMem ();
		if (IsShowScreen)
			DrawScreen ();
		if (IsShowSysInfo)
			DrawSysInfo ();
		DrawBottom ();
		GUILayout.EndVertical();
		GUI.DragWindow();
	}

	private void DrawBottom()
	{
		GUILayout.BeginHorizontal ();
		IsShowMem = GUILayout.Toggle (IsShowMem, "内存信息");
		IsShowScreen = GUILayout.Toggle (IsShowScreen, "屏幕信息");
		IsShowSysInfo = GUILayout.Toggle (IsShowSysInfo, "设备信息");
		GUILayout.EndHorizontal ();
	}

	private void DrawFPS()
	{
		GUILayout.BeginHorizontal ();
		GUILayout.Label ("FPS: " + (int)(1 / Time.deltaTime), fpsStyle);
		if (Profiler.supported) {
			long TotalAllocatedMemory = Profiler.GetTotalAllocatedMemoryLong () / 1024 / 1024; //"MB"
			int systemMemorySize = SystemInfo.systemMemorySize;
			GUILayout.Label ("Mem: " + TotalAllocatedMemory + "/" + systemMemorySize + "MB", fpsStyle);
		}
		GUILayout.EndHorizontal();
	}

	private void DrawMem()
	{
		if (Profiler.supported) {
			long TotalReservedMemory = Profiler.GetTotalReservedMemoryLong () / 1024 / 1024; //"MB"
			long TotalAllocatedMemory = Profiler.GetTotalAllocatedMemoryLong () / 1024 / 1024; //"MB"
			long TotalUnusedReservedMemory = Profiler.GetTotalUnusedReservedMemoryLong () / 1024 / 1024; //"MB"
			long MonoHeapSize = Profiler.GetMonoHeapSizeLong () / 1024 / 1024; //"MB"
			long MonoUsedSize = Profiler.GetMonoUsedSizeLong () / 1024 / 1024; //"MB"
			long TempAllocatorSize = Profiler.GetTempAllocatorSize () / 1024 / 1024; //"MB"

			GUILayout.Label ("TotalReservedMemory: " + TotalReservedMemory + "MB", memStyle);
			GUILayout.Label ("TotalAllocatedMemory: " + TotalAllocatedMemory + "MB", memStyle);
			GUILayout.Label ("TotalUnusedReservedMemory: " + TotalUnusedReservedMemory + "MB", memStyle);
			GUILayout.Label ("MonoHeapSize: " + MonoHeapSize + "MB", memStyle);
			GUILayout.Label ("MonoUsedSize: " + MonoUsedSize + "MB", memStyle);
			GUILayout.Label ("TempAllocatorSize: " + TempAllocatorSize + "MB", memStyle);
		}
	}

	private void DrawScreen()
	{
		Resolution resolution = Screen.currentResolution;
		GUILayout.Label ("Resolution: " + resolution.ToString(), labelStyle);
		GUILayout.Label ("Screen: " + Screen.width + "x" + Screen.height, labelStyle);
		GUILayout.Label ("dpi: " + Screen.dpi, labelStyle);
		GUILayout.Label ("sleepTimeout: " + Screen.sleepTimeout, labelStyle);
	}

	private void DrawSysInfo()
	{
		GUILayout.Box (sysinfo, sysStyle);
	}
}

运行效果