Modified source engine (2017) developed by valve and leaked in 2020. Not for commercial purporses
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//========= Copyright Valve Corporation, All rights reserved. ============//
//
// Purpose:
//
// $NoKeywords: $
//=============================================================================//
#include <windows.h>
#include "HardwareMatrixState.h"
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include "studio.h"
#include "studiomdl.h"
CHardwareMatrixState::CHardwareMatrixState()
{
m_LRUCounter = 0;
m_NumMatrices = 0;
m_matrixState = NULL;
m_savedMatrixState = NULL;
}
void CHardwareMatrixState::Init( int numHardwareMatrices )
{
m_NumMatrices = numHardwareMatrices;
delete [] m_matrixState;
m_matrixState = new MatrixState_t[m_NumMatrices];
Assert( m_matrixState );
delete [] m_savedMatrixState;
m_savedMatrixState = new MatrixState_t[m_NumMatrices];
Assert( m_savedMatrixState );
m_LRUCounter = 0;
m_AllocatedMatrices = 0;
int i;
for( i = 0; i < m_NumMatrices; i++ )
{
m_matrixState[i].allocated = false;
}
}
bool CHardwareMatrixState::AllocateMatrix( int globalMatrixID )
{
int i;
if( IsMatrixAllocated( globalMatrixID ) )
{
return true;
}
for( i = 0; i < m_NumMatrices; i++ )
{
if( !m_matrixState[i].allocated )
{
m_matrixState[i].globalMatrixID = globalMatrixID;
m_matrixState[i].allocated = true;
m_matrixState[i].lastUsageID = m_LRUCounter++;
++m_AllocatedMatrices;
DumpState();
return true;
}
}
DumpState();
return false;
}
int CHardwareMatrixState::FindLocalLRUIndex( void )
{
int oldestLRUCounter = INT_MAX;
int i;
int oldestID = 0;
for( i = 0; i < m_NumMatrices; i++ )
{
if( !m_matrixState[i].allocated )
{
continue;
}
if( m_matrixState[i].lastUsageID < oldestLRUCounter )
{
oldestLRUCounter = m_matrixState[i].lastUsageID;
oldestID = i;
}
}
Assert( oldestLRUCounter != INT_MAX );
return oldestID;
}
void CHardwareMatrixState::DeallocateLRU( void )
{
int id;
id = FindLocalLRUIndex();
m_matrixState[id].allocated = false;
--m_AllocatedMatrices;
}
void CHardwareMatrixState::DeallocateLRU( int n )
{
int i;
for( i = 0; i < n; i++ )
{
DeallocateLRU();
}
}
bool CHardwareMatrixState::IsMatrixAllocated( int globalMatrixID ) const
{
int i;
for( i = 0; i < m_NumMatrices; i++ )
{
if( m_matrixState[i].globalMatrixID == globalMatrixID &&
m_matrixState[i].allocated )
{
return true;
}
}
return false;
}
void CHardwareMatrixState::DeallocateAll()
{
int i;
DumpState();
for( i = 0; i < m_NumMatrices; i++ )
{
m_matrixState[i].allocated = false;
m_matrixState[i].globalMatrixID = INT_MAX;
m_matrixState[i].lastUsageID = INT_MAX;
}
m_AllocatedMatrices = 0;
DumpState();
}
void CHardwareMatrixState::SaveState( void )
{
int i;
for( i = 0; i < m_NumMatrices; i++ )
{
m_savedMatrixState[i] = m_matrixState[i];
}
}
void CHardwareMatrixState::RestoreState( void )
{
int i;
for( i = 0; i < m_NumMatrices; i++ )
{
m_matrixState[i] = m_savedMatrixState[i];
}
}
int CHardwareMatrixState::AllocatedMatrixCount() const
{
return m_AllocatedMatrices;
}
int CHardwareMatrixState::FreeMatrixCount() const
{
return m_NumMatrices - m_AllocatedMatrices;
}
int CHardwareMatrixState::GetNthBoneGlobalID( int n ) const
{
int i;
int m = 0;
for( i = 0; i < m_NumMatrices; i++ )
{
if( m_matrixState[i].allocated )
{
if( n == m )
{
return m_matrixState[i].globalMatrixID;
}
m++;
}
}
Assert( 0 );
MdlError( "GetNthBoneGlobalID() Failure\n" );
return 0;
}
void CHardwareMatrixState::DumpState( void )
{
int i;
static char buf[256];
//#ifndef _DEBUG
return;
//#endif
OutputDebugString( "DumpState\n:" );
for( i = 0; i < m_NumMatrices; i++ )
{
if( m_matrixState[i].allocated )
{
sprintf( buf, "%d: allocated: %s lastUsageID: %d globalMatrixID: %d\n",
i,
m_matrixState[i].allocated ? "true " : "false",
m_matrixState[i].lastUsageID,
m_matrixState[i].globalMatrixID );
OutputDebugString( buf );
}
}
}
int CHardwareMatrixState::FindHardwareMatrix( int globalMatrixID )
{
int i;
for( i = 0; i < m_NumMatrices; i++ )
{
if( m_matrixState[i].globalMatrixID == globalMatrixID )
{
return i;
}
}
Assert( 0 );
MdlError( "barfing in FindHardwareMatrix\n" );
return 0;
}