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71 lines
1.3 KiB
71 lines
1.3 KiB
//========= 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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#include <stdlib.h>
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#include <stdio.h>
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#include "HardwareVertexCache.h"
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CHardwareVertexCache::CHardwareVertexCache()
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{
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m_Fifo = NULL;
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m_Size = 0;
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Flush();
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}
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void CHardwareVertexCache::Init( int size )
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{
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m_Size = size;
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m_Fifo = new int[size];
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Flush();
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}
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void CHardwareVertexCache::Flush( void )
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{
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m_HeadIndex = 0;
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m_NumEntries = 0;
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}
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bool CHardwareVertexCache::IsPresent( int index )
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{
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int i;
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// printf( "testing if %d is present\n", index );
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for( i = 0; i < m_NumEntries; i++ )
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{
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if( m_Fifo[( m_HeadIndex + i ) % m_Size] == index )
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{
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// printf( "yes!\n" );
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return true;
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}
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}
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// printf( "no!\n" );
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// Print();
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return false;
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}
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void CHardwareVertexCache::Insert( int index )
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{
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// printf( "Inserting: %d\n", index );
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m_Fifo[( m_HeadIndex + m_NumEntries ) % m_Size] = index;
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if( m_NumEntries == m_Size )
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{
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m_HeadIndex = ( m_HeadIndex + 1 ) % m_Size;
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}
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else
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{
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m_NumEntries++;
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}
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// Print();
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}
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void CHardwareVertexCache::Print( void )
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{
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int i;
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for( i = 0; i < m_NumEntries; i++ )
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{
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printf( "fifo entry %d: %d\n", i, ( int )m_Fifo[( m_HeadIndex + i ) % m_Size] );
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}
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}
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