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// Copyright 2024 Intel Corporation
// SPDX-License-Identifier: Apache-2.0
#pragma once
#include <memory>
#include <unordered_map>
namespace ospray {
struct MipMapCache
{
using BufferPtr = std::shared_ptr<devicert::BufferShared<char>>;
// Find appropriate MIP map pyramid for given texture data
inline BufferPtr find(char *rootLevel);
// Manage cache entries
inline void add(char *rootLevel, BufferPtr mipMaps);
inline void remove(char *rootLevel);
private:
// Hash map containing MIP map buffers
std::unordered_map<char *, BufferPtr> map;
};
MipMapCache::BufferPtr MipMapCache::find(char *rootLevel)
{
auto it = map.find(rootLevel);
return it != map.end() ? it->second : BufferPtr();
}
void MipMapCache::add(char *rootLevel, MipMapCache::BufferPtr mipMaps)
{
map.insert(std::make_pair(rootLevel, mipMaps));
}
void MipMapCache::remove(char *rootLevel)
{
map.erase(rootLevel);
}
} // namespace ospray
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