IOSPlatformDynamicRHI.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
 
//------------------------------------------------------------------------------
// MARK: - iOS/tvOS Platform Dynamic RHI Defines
//
 
 
//------------------------------------------------------------------------------
// NOTE: Unreal Engine uses the same headers for iOS and tvOS; consequenty, we
//       use PLATFORM defines in this _rare_ instance to differentiate shader
//       platform types.
//------------------------------------------------------------------------------
 
 
#if PLATFORM_TVOS
#define SHADER_PLATFORM_METAL_SM5   SP_METAL_SM5_TVOS
#define SHADER_PLATFORM_METAL_ES3_1 SP_METAL_ES3_1_TVOS
#elif WITH_IOS_SIMULATOR
#define SHADER_PLATFORM_METAL_ES3_1 SP_METAL_SIM
#define SHADER_PLATFORM_METAL_SM5   SP_METAL_SM5_IOS
#else
#define SHADER_PLATFORM_METAL_SM5   SP_METAL_SM5_IOS
#define SHADER_PLATFORM_METAL_ES3_1 SP_METAL_ES3_1_IOS
#endif
 
//------------------------------------------------------------------------------
// MARK: - iOS/tvOS Platform Dynamic RHI Routines
//
 
namespace UE
{
namespace FIOSPlatformDynamicRHI
{
 
bool ShouldPreferFeatureLevelES31()
{
    return FParse::Param(FCommandLine::Get(), TEXT("metal"));
}
 
FORCEINLINE bool ShouldSupportMetalMRT()
{
    bool bSupportsMetalMRT = false;
    GConfig->GetBool(TEXT("/Script/IOSRuntimeSettings.IOSRuntimeSettings"), TEXT("bSupportsMetalMRT"), bSupportsMetalMRT, GEngineIni);
    return (bSupportsMetalMRT || FParse::Param(FCommandLine::Get(), TEXT("metalmrt"))) && !ShouldPreferFeatureLevelES31();
}
 
void AddTargetedShaderFormats(TArray<FString>& TargetedShaderFormats)
{
    if (ShouldSupportMetalMRT())
    {
        TargetedShaderFormats.Add(LegacyShaderPlatformToShaderFormat(SHADER_PLATFORM_METAL_SM5).ToString());
    }
    TargetedShaderFormats.Add(LegacyShaderPlatformToShaderFormat(SHADER_PLATFORM_METAL_ES3_1).ToString());
}
 
} // namespace FIOSPlatformDynamicRHI
} // namespace UE
 
namespace FPlatformDynamicRHI = UE::FIOSPlatformDynamicRHI;