GFxResourceID.h

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#pragma once
 
namespace RE
{
    class GFxResourceID
    {
    public:
        struct IDTypeConstants
        {
            enum IDTypeConstant : std::uint32_t
            {
                kIndexMask = 0x0000FFFF,
                kTypeMask = 0x0FFF0000,
                kGenMask = 0x00030000,
 
                kSWF = 0,
                kStatic = 1 << 16,
                kExport = 1 << 17,
 
                kTypeShift = 18,
 
                kInvalidID = (1 << kTypeShift) | kSWF
            };
        };
 
        struct IDTypes
        {
            enum IDType : std::uint32_t
            {
                kNone = IDTypeConstants::kSWF,
                kInternalConstant = (0 << IDTypeConstants::kTypeShift) | IDTypeConstants::kStatic,
                kGradientImage = (1 << IDTypeConstants::kTypeShift) | IDTypeConstants::kStatic,
                kDynFontImage = (2 << IDTypeConstants::kTypeShift) | IDTypeConstants::kStatic,
                kFontImage = (1 << IDTypeConstants::kTypeShift) | IDTypeConstants::kExport
            };
        };
 
        class HashOp
        {
        public:
            UPInt operator()(const GFxResourceID& a_idRef);
        };
 
        GFxResourceID();
        explicit GFxResourceID(std::uint32_t a_resID);
        GFxResourceID(const GFxResourceID& a_rhs);
 
        GFxResourceID& operator=(const GFxResourceID& a_rhs);
        bool           operator==(const GFxResourceID& a_rhs) const;
        bool           operator!=(const GFxResourceID& a_rhs) const;
        bool           operator==(std::uint32_t a_idVal) const;
        bool           operator!=(std::uint32_t a_idVal) const;
 
        [[nodiscard]] std::uint32_t   GetIDValue() const;
        [[nodiscard]] std::uint32_t   GetIDIndex() const;
        [[nodiscard]] IDTypes::IDType GetIDType() const;
        GFxResourceID                 GenerateNextID();
 
    protected:
        // members
        std::uint32_t id;  // 0
    };
    static_assert(sizeof(GFxResourceID) == 0x4);
}