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/**
* @file VertexCache.h
* @brief VertexCache class definition
*
* $LicenseInfo:firstyear=2002&license=viewerlgpl$
* Second Life Viewer Source Code
* Copyright (C) 2010, Linden Research, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License only.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
* $/LicenseInfo$
*/
#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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