Instance.hpp

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#pragma once
 
#include "utils/webgpu.hpp"
 
namespace Graphic::Resource {
class Instance {
  public:
    explicit Instance(wgpu::Instance wgpuInstance_) : wgpuInstance(wgpuInstance_) {}
    ~Instance()
    {
        if (wgpuInstance)
        {
            wgpuInstance.release();
            wgpuInstance = nullptr;
        }
    }
 
    Instance(Instance &other) = delete;
    Instance &operator=(Instance &other) = delete;
 
    // @note While using && ctor, you're destroying the previous Instance and will be invalid
    Instance(Instance &&other) noexcept : wgpuInstance(other.wgpuInstance) { other.wgpuInstance = nullptr; }
 
    // @note While using && assignement, you're destroying the previous Instance and will be invalid
    Instance &operator=(Instance &&other) noexcept
    {
        if (this != &other)
        {
            if (wgpuInstance)
            {
                wgpuInstance.release();
            }
            wgpuInstance = std::move(other.wgpuInstance);
            other.wgpuInstance = nullptr;
        }
        return *this;
    }
 
    wgpu::Instance &operator*(void) { return wgpuInstance; };
    wgpu::Instance *operator->(void) { return &wgpuInstance; };
 
    const wgpu::Instance &operator*(void) const { return wgpuInstance; };
    const wgpu::Instance *operator->(void) const { return &wgpuInstance; };
 
  private:
    // @note We will assume that Instance is not null all the time
    wgpu::Instance wgpuInstance = nullptr;
};
} // namespace Graphic::Resource