RHIFeatureLevel.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "Containers/EnumAsByte.h"
#include "RHIDefinitions.h"
 
#ifndef USE_STATIC_FEATURE_LEVEL_ENUMS
#define USE_STATIC_FEATURE_LEVEL_ENUMS 0
#endif
 
namespace ERHIFeatureLevel
{
    enum Type : int
    {
        ES2_REMOVED,
 
        ES3_1,
 
        SM4_REMOVED,
 
        SM5,
 
        SM6,
 
        Num
    };
};
 
struct FGenericStaticFeatureLevel
{
    inline FGenericStaticFeatureLevel(const ERHIFeatureLevel::Type InFeatureLevel) : FeatureLevel(InFeatureLevel) {}
    inline FGenericStaticFeatureLevel(const TEnumAsByte<ERHIFeatureLevel::Type> InFeatureLevel) : FeatureLevel(InFeatureLevel) {}
 
    inline operator ERHIFeatureLevel::Type() const
    {
        return FeatureLevel;
    }
 
    inline bool operator == (const ERHIFeatureLevel::Type Other) const
    {
        return Other == FeatureLevel;
    }
 
    inline bool operator != (const ERHIFeatureLevel::Type Other) const
    {
        return Other != FeatureLevel;
    }
 
    inline bool operator <= (const ERHIFeatureLevel::Type Other) const
    {
        return FeatureLevel <= Other;
    }
 
    inline bool operator < (const ERHIFeatureLevel::Type Other) const
    {
        return FeatureLevel < Other;
    }
 
    inline bool operator >= (const ERHIFeatureLevel::Type Other) const
    {
        return FeatureLevel >= Other;
    }
 
    inline bool operator > (const ERHIFeatureLevel::Type Other) const
    {
        return FeatureLevel > Other;
    }
 
private:
    ERHIFeatureLevel::Type FeatureLevel;
};
 
#if USE_STATIC_FEATURE_LEVEL_ENUMS
#include COMPILED_PLATFORM_HEADER(StaticFeatureLevel.inl)
#else
using FStaticFeatureLevel = FGenericStaticFeatureLevel;
#endif
 
// The maximum feature level available on this system
extern RHI_API ERHIFeatureLevel::Type GMaxRHIFeatureLevel;