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/**
* @file VertexCache.h
* @brief VertexCache class definition
*
* $LicenseInfo:firstyear=2002&license=viewergpl$
*
* Copyright (c) 2002-2009, Linden Research, Inc.
*
* Second Life Viewer Source Code
* The source code in this file ("Source Code") is provided by Linden Lab
* to you under the terms of the GNU General Public License, version 2.0
* ("GPL"), unless you have obtained a separate licensing agreement
* ("Other License"), formally executed by you and Linden Lab. Terms of
* the GPL can be found in doc/GPL-license.txt in this distribution, or
* online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
*
* There are special exceptions to the terms and conditions of the GPL as
* it is applied to this Source Code. View the full text of the exception
* in the file doc/FLOSS-exception.txt in this software distribution, or
* online at http://secondlifegrid.net/programs/open_source/licensing/flossexception
*
* By copying, modifying or distributing this software, you acknowledge
* that you have read and understood your obligations described above,
* and agree to abide by those obligations.
*
* ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
* WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
* COMPLETENESS OR PERFORMANCE.
* $/LicenseInfo$
*/
#ifndef VERTEX_CACHE_H
#define VERTEX_CACHE_H
class VertexCache
{
public:
VertexCache(int size)
{
numEntries = size;
entries = new int[numEntries];
for(int i = 0; i < numEntries; i++)
entries[i] = -1;
}
VertexCache() { VertexCache(16); }
~VertexCache() { delete[] entries; entries = 0; }
bool InCache(int entry)
{
bool returnVal = false;
for(int i = 0; i < numEntries; i++)
{
if(entries[i] == entry)
{
returnVal = true;
break;
}
}
return returnVal;
}
int AddEntry(int entry)
{
int removed;
removed = entries[numEntries - 1];
//push everything right one
for(int i = numEntries - 2; i >= 0; i--)
{
entries[i + 1] = entries[i];
}
entries[0] = entry;
return removed;
}
void Clear()
{
memset(entries, -1, sizeof(int) * numEntries);
}
void Copy(VertexCache* inVcache)
{
for(int i = 0; i < numEntries; i++)
{
inVcache->Set(i, entries[i]);
}
}
int At(int index) { return entries[index]; }
void Set(int index, int value) { entries[index] = value; }
private:
int *entries;
int numEntries;
};
#endif
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