D3D12RHI.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
/*=============================================================================
    D3D12RHI.h: Public D3D RHI definitions.
=============================================================================*/
 
#pragma once
 
#include "HAL/Platform.h"
 
// Note: We do not need to worry about these counts exceeding resource binding tiers 1 & 2 due to 2 reasons:
// 1) On PC the actual counts used to build the root signature are derived from the shader and the shader compiler
// profile required for a desired feature level will enforce the proper limits.
// 2) All platforms currently using the global root signature support resource binding tier 3, these counts are well within the limits
// of tier 3.
// More info here: https://learn.microsoft.com/en-us/windows/win32/direct3d12/hardware-support, https://en.wikipedia.org/wiki/Feature_levels_in_Direct3D
#define MAX_SRVS        64 // Cannot be set higher than 64 due to 64b Cache.BoundMask logic
#define MAX_SAMPLERS    32
#define MAX_UAVS        16
#define MAX_CBS         16
 
#if !defined(WITH_PIX_EVENT_RUNTIME)
    #define WITH_PIX_EVENT_RUNTIME 0
#endif
 
#if PLATFORM_WINDOWS
    #define D3D12RHI_PLATFORM_HAS_UNIFIED_MEMORY    0
    #define ENABLE_RESIDENCY_MANAGEMENT             1
    #define PIPELINE_STATE_FILE_LOCATION            FPaths::ProjectSavedDir()
    #define USE_PIX                                 WITH_PIX_EVENT_RUNTIME
    #define D3D12RHI_SUPPORTS_WIN_PIX               USE_PIX
 
    #define FD3D12_TEXTURE_DATA_PITCH_ALIGNMENT     D3D12_TEXTURE_DATA_PITCH_ALIGNMENT
#else
    #include "D3D12RHIPlatformPublic.h"
#endif