DescriptorIndexAllocator.h

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#pragma once
#include <cstdint>
#include <stack>
#include <vector>
 
namespace EngineCore
{
class DescriptorIndexAllocator
{
public:
    DescriptorIndexAllocator() = delete;
    explicit DescriptorIndexAllocator(int descriptorCount);

    [[nodiscard]] uint32_t allocate();

    void free(uint32_t index);

    [[nodiscard]] const std::vector<uint32_t> &getUsedIndices() const;

    void reset(int newSize);
 
    size_t getCapacity() const;
 
private:
    std::stack<uint32_t> freeIndices;
    std::vector<uint32_t> usedIndices;
    uint32_t capacity;
};
}