141 lines
3.1 KiB
C++
141 lines
3.1 KiB
C++
//========= Copyright Valve Corporation, All rights reserved. ============//
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//
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// Purpose:
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//
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// $NoKeywords: $
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//=============================================================================//
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#ifndef ENGINESTATS_H
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#define ENGINESTATS_H
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#ifdef _WIN32
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#pragma once
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#endif
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#include "utlvector.h"
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#include "sysexternal.h"
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#include "filesystem.h" // FileHandle_t define
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enum EngineTimedStatId_t
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{
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ENGINE_STATS_FRAME_TIME,
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ENGINE_STATS_FPS, // this is calculated at EndFrame!
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ENGINE_STATS_FPS_VARIABILITY,
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ENGINE_STATS_NUM_TIMED_STATS,
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};
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class CEngineStats
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{
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public:
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CEngineStats();
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//
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// stats input
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//
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void BeginRun( void );
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// Advances the next frame for the stats...
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void NextFrame();
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void BeginFrame( void );
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// Timed stat gathering
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void BeginTimedStat( EngineTimedStatId_t stat );
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void EndTimedStat( EngineTimedStatId_t stat );
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// Adds to a timed stat...
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void AddToTimedStat( EngineTimedStatId_t stat, float time );
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// Slams a timed stat
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void SetTimedStat( EngineTimedStatId_t stat, float time );
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// returns timed stats
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double TimedStatInFrame( EngineTimedStatId_t stat ) const;
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double TotalTimedStat( EngineTimedStatId_t stat ) const;
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void BeginDrawWorld( void );
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void EndDrawWorld( void );
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void EndFrame( void );
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void EndRun( void );
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void PauseStats( bool bPaused );
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//
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// stats output
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// call these outside of a BeginFrame/EndFrame pair
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//
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double GetRunTime( void );
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void SetFrameTime( float flFrameTime ) { m_flFrameTime = flFrameTime; }
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void SetFPSVariability( float flFPSVariability ) { m_flFPSVariability = flFPSVariability; }
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int FrameCount() const { return m_totalNumFrames; }
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private:
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void ComputeFrameTimeStats( void );
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// How many frames worth of data have we logged?
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int m_totalNumFrames;
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// run timing data
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double m_runStartTime;
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double m_runEndTime;
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struct StatGroupInfo_t
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{
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double m_StatFrameTime[ENGINE_STATS_NUM_TIMED_STATS];
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double m_StatStartTime[ENGINE_STATS_NUM_TIMED_STATS];
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double m_TotalStatTime[ENGINE_STATS_NUM_TIMED_STATS];
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};
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StatGroupInfo_t m_StatGroup;
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bool m_InFrame;
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bool m_bPaused;
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bool m_bInRun;
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float m_flFrameTime;
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float m_flFPSVariability;
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};
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//-----------------------------------------------------------------------------
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// Inlined stat gathering methods
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//-----------------------------------------------------------------------------
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inline void CEngineStats::BeginTimedStat( EngineTimedStatId_t stat )
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{
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if (m_InFrame)
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{
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m_StatGroup.m_StatStartTime[stat] =
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Sys_FloatTime();
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}
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}
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inline void CEngineStats::EndTimedStat( EngineTimedStatId_t stat )
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{
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if (m_InFrame)
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{
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float dt = (float)Sys_FloatTime() - (float)(m_StatGroup.m_StatStartTime[stat]);
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m_StatGroup.m_StatFrameTime[stat] += dt;
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}
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}
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// Adds to a timed stat...
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inline void CEngineStats::AddToTimedStat( EngineTimedStatId_t stat, float dt )
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{
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if (m_InFrame)
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{
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m_StatGroup.m_StatFrameTime[stat] += dt;
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}
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}
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// Slams a timed stat
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inline void CEngineStats::SetTimedStat( EngineTimedStatId_t stat, float time )
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{
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m_StatGroup.m_StatFrameTime[stat] = time;
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}
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extern CEngineStats g_EngineStats;
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#endif // ENGINESTATS_H
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