Modified source engine (2017) developed by valve and leaked in 2020. Not for commercial purporses
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#include "VertexCache.h"
VertexCache::VertexCache()
{
VertexCache(16);
}
VertexCache::VertexCache(int size)
{
numEntries = size;
entries = new unsigned short[numEntries];
for(int i = 0; i < numEntries; i++)
entries[i] = -1;
}
VertexCache::~VertexCache()
{
delete[] entries;
}
int VertexCache::At(int index)
{
return entries[index];
}
void VertexCache::Set(int index, int value)
{
entries[index] = value;
}
void VertexCache::Clear()
{
for(int i = 0; i < numEntries; i++)
entries[i] = -1;
}
void VertexCache::Copy(VertexCache* inVcache)
{
for(int i = 0; i < numEntries; i++)
{
inVcache->Set(i, entries[i]);
}
}
bool VertexCache::InCache(int entry)
{
bool returnVal = false;
for(int i = 0; i < numEntries; i++)
{
if(entries[i] == entry)
{
returnVal = true;
break;
}
}
return returnVal;
}
int VertexCache::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;
}