FPS、メモリ使用量等を画面に表示するスクリプト。

ProfileStats.cs

using UnityEngine;
using System.Collections;
using System.Text;
using System.Linq;

[ExecuteInEditMode()]

public class ProfileStats : MonoBehaviour
{
    //------------------------------------------------------------
    // constant
    //------------------------------------------------------------
    public const int    SIZE_KB = 1024;
    public const int    SIZE_MB = 1024 * 1024;
    
    //------------------------------------------------------------
    // Start
    //------------------------------------------------------------
    void Start()
    {
        useGUILayout = false;
    }
    //------------------------------------------------------------
    // OnGUI
    //------------------------------------------------------------
    void OnGUI()
    {
        // profile
        profileStats();
        // draw
        if( m_IsShow ){
            if( Application.isPlaying ){
                drawStats();
            }else{
                if( m_IsShowEditor ){
                    drawStats();
                }
            }
        }
    }
    
    //------------------------------------------------------------
    // profile stats
    //------------------------------------------------------------
    private void    profileStats()
    {
        // check GC
        int collCount = System.GC.CollectionCount( 0 );
        if( m_LastCollectNum != collCount )
        {
            m_LastCollectNum        = collCount;
            m_CollectDeltaTime      = Time.realtimeSinceStartup - m_LastCollectTime;
            m_LastCollectTime       = Time.realtimeSinceStartup;
            m_LastCollectDeltaTime  = Time.deltaTime;
            m_CollectMemSize        = m_UsedMemSize;
        }
        
        // check memory
        m_UsedMemSize = System.GC.GetTotalMemory( false );  // byte
        if( m_UsedMemSize > m_MaxUsedMemSize ){
            m_MaxUsedMemSize = m_UsedMemSize;
        }
    
        // calc alloc rate
        if( (Time.realtimeSinceStartup - m_LastAllocSet) > 0.3f )
        {
            long diff = m_UsedMemSize - m_LastAllocMemSize;
            
            m_LastAllocMemSize  = m_UsedMemSize;
            m_LastAllocSet      = Time.realtimeSinceStartup;
            
            if( diff >= 0 ){
                m_AllocRate = diff;
            }
        }
    }
    //------------------------------------------------------------
    // draw stats
    //------------------------------------------------------------
    private void    drawStats()
    {
        // make string with builder
        StringBuilder text = new StringBuilder();
        
        // FPS
        text.Append( (1f/Time.deltaTime).ToString("0.000") + " FPS" )
            .AppendLine();
        
        // current memory
        text.Append( "Used Mem                      " )
            .Append( ((float)m_UsedMemSize / SIZE_MB).ToString("0.00") + " MB" )
            .AppendLine();
        // max used memory
        text.Append( "Max Used Mem              " )
            .Append( ((float)m_MaxUsedMemSize / SIZE_MB).ToString("0.00") + " MB" )
            .AppendLine();
        // Profiler.usedHeapSize
        text.Append( "Used Prog Heap                " )
            .Append( ((float)Profiler.usedHeapSize / SIZE_MB).ToString("0.00") + " MB" )
            .AppendLine();
        // GetMonoUsedSize (byte)
        text.Append( "Mono Used                 " )
            .Append( ((float)Profiler.GetMonoUsedSize() / SIZE_MB).ToString("0.00") + " MB" )
            .AppendLine();
        // GetMonoHeapSize (byte)
        text.Append( "Mono Heap                 " )
            .Append( ((float)Profiler.GetMonoHeapSize() / SIZE_MB).ToString("0.00") + " MB" )
            .AppendLine();
        // GetTotalAllocatedMemory (byte)
        text.Append( "Total Alloc Mem               " )
            .Append( ((float)Profiler.GetTotalAllocatedMemory() / SIZE_MB).ToString("0.00") + " MB" )
            .AppendLine();
        // SystemInfo.systemMemorySize (mb)
        text.Append( "System Memory         " )
            .Append( SystemInfo.systemMemorySize.ToString() + " MB" )
            .AppendLine();
        
        // sub memory
        if( m_IsShowSubMemory )
        {
            // GetTotalReservedMemory (byte)
            text.Append( "Total Reserved Mem        " )
                .Append( ((float)Profiler.GetTotalReservedMemory() / SIZE_MB).ToString("0.00") + " MB" )
                .AppendLine();
            // GetTotalUnusedReserved (byte)
            text.Append( "Total Unused Res-Mem  " )
                .Append( ((float)Profiler.GetTotalUnusedReservedMemory() / SIZE_MB).ToString("0.00") + " MB" )
                .AppendLine();
            // graphicMemorySize
            text.Append( "Graphic Memory            " )
                .Append( SystemInfo.graphicsMemorySize.ToString() + " MB" )
                .AppendLine();
        }
        // GC
        if( m_IsShowGC )
        {
            // alloc rate
            text.Append( "Allocation rate               " )
                .Append( ((float)m_AllocRate / SIZE_MB).ToString ("0.00") + " MB" )
                .AppendLine();
            // GC frequency
            text.Append( "Collection frequency      " )
                .Append( m_CollectDeltaTime.ToString("0.00") + " s" )
                .AppendLine();
            // time.deltaTime when last GC ?
            text.Append( "Last collect delta            " )
                .Append( m_LastCollectDeltaTime.ToString("0.000") + " s (" )
                .Append( (1f / m_LastCollectDeltaTime).ToString("0.0") + " fps)" )
                .AppendLine();
        }
        
        // draw
        int lineCount = text.ToString().ToList().Where(c => c.Equals('\n')).Count();
        
        GUI.Box( new Rect(5, 5, 310, (int)(m_FontSizeBase * lineCount) + 5), "" );
        GUI.Label( new Rect(10, 5, Screen.width, Screen.height), text.ToString() );
    }
    
    //------------------------------------------------------------
    // member
    //------------------------------------------------------------
    public bool         m_IsShow            = true;
    public bool         m_IsShowSubMemory   = false;
    public bool         m_IsShowGC          = false;
    public bool         m_IsShowEditor      = false;

    public float        m_FontSizeBase      = 15.175f;
    
    private long        m_UsedMemSize;
    private long        m_MaxUsedMemSize;
    
    private long        m_CollectMemSize;
    private float       m_LastCollectTime;
    private float       m_LastCollectNum;
    private float       m_CollectDeltaTime;
    private float       m_LastCollectDeltaTime;
    private long        m_AllocRate;
    private long        m_LastAllocMemSize;
    private float       m_LastAllocSet      = -9999.0f;
}