//////////////////////////////////////////////////////////////////////////////
//
//  Copyright (C) Microsoft Corporation.  All Rights Reserved.
//
//  File:       d3dx12.h
//  Content:    D3DX12 utility library
//
//////////////////////////////////////////////////////////////////////////////

#ifndef __D3DX12_H__
#define __D3DX12_H__

#include "d3d12.h"

#if defined( __cplusplus )

struct CD3DX12_DEFAULT {};
extern const DECLSPEC_SELECTANY CD3DX12_DEFAULT D3D12_DEFAULT;

//------------------------------------------------------------------------------------------------
inline bool operator==(const D3D12_VIEWPORT& l, const D3D12_VIEWPORT& r)
{
	return l.TopLeftX == r.TopLeftX && l.TopLeftY == r.TopLeftY && l.Width == r.Width &&
		l.Height == r.Height && l.MinDepth == r.MinDepth && l.MaxDepth == r.MaxDepth;
}

//------------------------------------------------------------------------------------------------
inline bool operator!=(const D3D12_VIEWPORT& l, const D3D12_VIEWPORT& r)
{
	return !(l == r);
}

//------------------------------------------------------------------------------------------------
struct CD3DX12_RECT : public D3D12_RECT
{
	CD3DX12_RECT()
	{}
	explicit CD3DX12_RECT(const D3D12_RECT& o) :
		D3D12_RECT(o)
	{}
	explicit CD3DX12_RECT(
		LONG Left,
		LONG Top,
		LONG Right,
		LONG Bottom)
	{
		left = Left;
		top = Top;
		right = Right;
		bottom = Bottom;
	}
	~CD3DX12_RECT() {}
	operator const D3D12_RECT&() const { return *this; }
};

//------------------------------------------------------------------------------------------------
struct CD3DX12_BOX : public D3D12_BOX
{
	CD3DX12_BOX()
	{}
	explicit CD3DX12_BOX(const D3D12_BOX& o) :
		D3D12_BOX(o)
	{}
	explicit CD3DX12_BOX(
		LONG Left,
		LONG Right)
	{
		left = Left;
		top = 0;
		front = 0;
		right = Right;
		bottom = 1;
		back = 1;
	}
	explicit CD3DX12_BOX(
		LONG Left,
		LONG Top,
		LONG Right,
		LONG Bottom)
	{
		left = Left;
		top = Top;
		front = 0;
		right = Right;
		bottom = Bottom;
		back = 1;
	}
	explicit CD3DX12_BOX(
		LONG Left,
		LONG Top,
		LONG Front,
		LONG Right,
		LONG Bottom,
		LONG Back)
	{
		left = Left;
		top = Top;
		front = Front;
		right = Right;
		bottom = Bottom;
		back = Back;
	}
	~CD3DX12_BOX() {}
	operator const D3D12_BOX&() const { return *this; }
};
inline bool operator==(const D3D12_BOX& l, const D3D12_BOX& r)
{
	return l.left == r.left && l.top == r.top && l.front == r.front &&
		l.right == r.right && l.bottom == r.bottom && l.back == r.back;
}
inline bool operator!=(const D3D12_BOX& l, const D3D12_BOX& r)
{
	return !(l == r);
}

//------------------------------------------------------------------------------------------------
struct CD3DX12_DEPTH_STENCIL_DESC : public D3D12_DEPTH_STENCIL_DESC
{
	CD3DX12_DEPTH_STENCIL_DESC()
	{}
	explicit CD3DX12_DEPTH_STENCIL_DESC(const D3D12_DEPTH_STENCIL_DESC& o) :
		D3D12_DEPTH_STENCIL_DESC(o)
	{}
	explicit CD3DX12_DEPTH_STENCIL_DESC(CD3DX12_DEFAULT)
	{
		DepthEnable = TRUE;
		DepthWriteMask = D3D12_DEPTH_WRITE_MASK_ALL;
		DepthFunc = D3D12_COMPARISON_FUNC_LESS;
		StencilEnable = FALSE;
		StencilReadMask = D3D12_DEFAULT_STENCIL_READ_MASK;
		StencilWriteMask = D3D12_DEFAULT_STENCIL_WRITE_MASK;
		const D3D12_DEPTH_STENCILOP_DESC defaultStencilOp =
		{ D3D12_STENCIL_OP_KEEP, D3D12_STENCIL_OP_KEEP, D3D12_STENCIL_OP_KEEP, D3D12_COMPARISON_FUNC_ALWAYS };
		FrontFace = defaultStencilOp;
		BackFace = defaultStencilOp;
	}
	explicit CD3DX12_DEPTH_STENCIL_DESC(
		BOOL depthEnable,
		D3D12_DEPTH_WRITE_MASK depthWriteMask,
		D3D12_COMPARISON_FUNC depthFunc,
		BOOL stencilEnable,
		UINT8 stencilReadMask,
		UINT8 stencilWriteMask,
		D3D12_STENCIL_OP frontStencilFailOp,
		D3D12_STENCIL_OP frontStencilDepthFailOp,
		D3D12_STENCIL_OP frontStencilPassOp,
		D3D12_COMPARISON_FUNC frontStencilFunc,
		D3D12_STENCIL_OP backStencilFailOp,
		D3D12_STENCIL_OP backStencilDepthFailOp,
		D3D12_STENCIL_OP backStencilPassOp,
		D3D12_COMPARISON_FUNC backStencilFunc)
	{
		DepthEnable = depthEnable;
		DepthWriteMask = depthWriteMask;
		DepthFunc = depthFunc;
		StencilEnable = stencilEnable;
		StencilReadMask = stencilReadMask;
		StencilWriteMask = stencilWriteMask;
		FrontFace.StencilFailOp = frontStencilFailOp;
		FrontFace.StencilDepthFailOp = frontStencilDepthFailOp;
		FrontFace.StencilPassOp = frontStencilPassOp;
		FrontFace.StencilFunc = frontStencilFunc;
		BackFace.StencilFailOp = backStencilFailOp;
		BackFace.StencilDepthFailOp = backStencilDepthFailOp;
		BackFace.StencilPassOp = backStencilPassOp;
		BackFace.StencilFunc = backStencilFunc;
	}
	~CD3DX12_DEPTH_STENCIL_DESC() {}
	operator const D3D12_DEPTH_STENCIL_DESC&() const { return *this; }
};

//------------------------------------------------------------------------------------------------
struct CD3DX12_BLEND_DESC : public D3D12_BLEND_DESC
{
	CD3DX12_BLEND_DESC()
	{}
	explicit CD3DX12_BLEND_DESC(const D3D12_BLEND_DESC& o) :
		D3D12_BLEND_DESC(o)
	{}
	explicit CD3DX12_BLEND_DESC(CD3DX12_DEFAULT)
	{
		AlphaToCoverageEnable = FALSE;
		IndependentBlendEnable = FALSE;
		const D3D12_RENDER_TARGET_BLEND_DESC defaultRenderTargetBlendDesc =
		{
			FALSE,FALSE,
			D3D12_BLEND_ONE, D3D12_BLEND_ZERO, D3D12_BLEND_OP_ADD,
			D3D12_BLEND_ONE, D3D12_BLEND_ZERO, D3D12_BLEND_OP_ADD,
			D3D12_LOGIC_OP_NOOP,
			D3D12_COLOR_WRITE_ENABLE_ALL,
		};
		for (UINT i = 0; i < D3D12_SIMULTANEOUS_RENDER_TARGET_COUNT; ++i)
			RenderTarget[i] = defaultRenderTargetBlendDesc;
	}
	~CD3DX12_BLEND_DESC() {}
	operator const D3D12_BLEND_DESC&() const { return *this; }
};

//------------------------------------------------------------------------------------------------
struct CD3DX12_RASTERIZER_DESC : public D3D12_RASTERIZER_DESC
{
	CD3DX12_RASTERIZER_DESC()
	{}
	explicit CD3DX12_RASTERIZER_DESC(const D3D12_RASTERIZER_DESC& o) :
		D3D12_RASTERIZER_DESC(o)
	{}
	explicit CD3DX12_RASTERIZER_DESC(CD3DX12_DEFAULT)
	{
		FillMode = D3D12_FILL_MODE_SOLID;
		CullMode = D3D12_CULL_MODE_BACK;
		FrontCounterClockwise = FALSE;
		DepthBias = D3D12_DEFAULT_DEPTH_BIAS;
		DepthBiasClamp = D3D12_DEFAULT_DEPTH_BIAS_CLAMP;
		SlopeScaledDepthBias = D3D12_DEFAULT_SLOPE_SCALED_DEPTH_BIAS;
		DepthClipEnable = TRUE;
		MultisampleEnable = FALSE;
		AntialiasedLineEnable = FALSE;
		ForcedSampleCount = 0;
		ConservativeRaster = D3D12_CONSERVATIVE_RASTERIZATION_MODE_OFF;
	}
	explicit CD3DX12_RASTERIZER_DESC(
		D3D12_FILL_MODE fillMode,
		D3D12_CULL_MODE cullMode,
		BOOL frontCounterClockwise,
		INT depthBias,
		FLOAT depthBiasClamp,
		FLOAT slopeScaledDepthBias,
		BOOL depthClipEnable,
		BOOL multisampleEnable,
		BOOL antialiasedLineEnable,
		UINT forcedSampleCount,
		D3D12_CONSERVATIVE_RASTERIZATION_MODE conservativeRaster)
	{
		FillMode = fillMode;
		CullMode = cullMode;
		FrontCounterClockwise = frontCounterClockwise;
		DepthBias = depthBias;
		DepthBiasClamp = depthBiasClamp;
		SlopeScaledDepthBias = slopeScaledDepthBias;
		DepthClipEnable = depthClipEnable;
		MultisampleEnable = multisampleEnable;
		AntialiasedLineEnable = antialiasedLineEnable;
		ForcedSampleCount = forcedSampleCount;
		ConservativeRaster = conservativeRaster;
	}
	~CD3DX12_RASTERIZER_DESC() {}
	operator const D3D12_RASTERIZER_DESC&() const { return *this; }
};

//------------------------------------------------------------------------------------------------
struct CD3DX12_RESOURCE_ALLOCATION_INFO : public D3D12_RESOURCE_ALLOCATION_INFO
{
	CD3DX12_RESOURCE_ALLOCATION_INFO()
	{}
	explicit CD3DX12_RESOURCE_ALLOCATION_INFO(const D3D12_RESOURCE_ALLOCATION_INFO& o) :
		D3D12_RESOURCE_ALLOCATION_INFO(o)
	{}
	CD3DX12_RESOURCE_ALLOCATION_INFO(
		UINT64 size,
		UINT64 alignment)
	{
		SizeInBytes = size;
		Alignment = alignment;
	}
	operator const D3D12_RESOURCE_ALLOCATION_INFO&() const { return *this; }
};

//------------------------------------------------------------------------------------------------
struct CD3DX12_HEAP_PROPERTIES : public D3D12_HEAP_PROPERTIES
{
	CD3DX12_HEAP_PROPERTIES()
	{}
	explicit CD3DX12_HEAP_PROPERTIES(const D3D12_HEAP_PROPERTIES &o) :
		D3D12_HEAP_PROPERTIES(o)
	{}
	CD3DX12_HEAP_PROPERTIES(
		D3D12_CPU_PAGE_PROPERTY cpuPageProperty,
		D3D12_MEMORY_POOL memoryPoolPreference,
		UINT creationNodeMask = 1,
		UINT nodeMask = 1)
	{
		Type = D3D12_HEAP_TYPE_CUSTOM;
		CPUPageProperty = cpuPageProperty;
		MemoryPoolPreference = memoryPoolPreference;
		CreationNodeMask = creationNodeMask;
		VisibleNodeMask = nodeMask;
	}
	explicit CD3DX12_HEAP_PROPERTIES(
		D3D12_HEAP_TYPE type,
		UINT creationNodeMask = 1,
		UINT nodeMask = 1)
	{
		Type = type;
		CPUPageProperty = D3D12_CPU_PAGE_PROPERTY_UNKNOWN;
		MemoryPoolPreference = D3D12_MEMORY_POOL_UNKNOWN;
		CreationNodeMask = creationNodeMask;
		VisibleNodeMask = nodeMask;
	}
	operator const D3D12_HEAP_PROPERTIES&() const { return *this; }
	bool IsCPUAccessible() const
	{
		return Type == D3D12_HEAP_TYPE_UPLOAD || Type == D3D12_HEAP_TYPE_READBACK || (Type == D3D12_HEAP_TYPE_CUSTOM &&
			(CPUPageProperty == D3D12_CPU_PAGE_PROPERTY_WRITE_COMBINE || CPUPageProperty == D3D12_CPU_PAGE_PROPERTY_WRITE_BACK));
	}
};
inline bool operator==(const D3D12_HEAP_PROPERTIES& l, const D3D12_HEAP_PROPERTIES& r)
{
	return l.Type == r.Type && l.CPUPageProperty == r.CPUPageProperty &&
		l.MemoryPoolPreference == r.MemoryPoolPreference &&
		l.CreationNodeMask == r.CreationNodeMask &&
		l.VisibleNodeMask == r.VisibleNodeMask;
}
inline bool operator!=(const D3D12_HEAP_PROPERTIES& l, const D3D12_HEAP_PROPERTIES& r)
{
	return !(l == r);
}

//------------------------------------------------------------------------------------------------
struct CD3DX12_HEAP_DESC : public D3D12_HEAP_DESC
{
	CD3DX12_HEAP_DESC()
	{}
	explicit CD3DX12_HEAP_DESC(const D3D12_HEAP_DESC &o) :
		D3D12_HEAP_DESC(o)
	{}
	CD3DX12_HEAP_DESC(
		UINT64 size,
		D3D12_HEAP_PROPERTIES properties,
		UINT64 alignment = 0,
		D3D12_HEAP_FLAGS flags = D3D12_HEAP_FLAG_NONE)
	{
		SizeInBytes = size;
		Properties = properties;
		Alignment = alignment;
		Flags = flags;
	}
	CD3DX12_HEAP_DESC(
		UINT64 size,
		D3D12_HEAP_TYPE type,
		UINT64 alignment = 0,
		D3D12_HEAP_FLAGS flags = D3D12_HEAP_FLAG_NONE)
	{
		SizeInBytes = size;
		Properties = CD3DX12_HEAP_PROPERTIES(type);
		Alignment = alignment;
		Flags = flags;
	}
	CD3DX12_HEAP_DESC(
		UINT64 size,
		D3D12_CPU_PAGE_PROPERTY cpuPageProperty,
		D3D12_MEMORY_POOL memoryPoolPreference,
		UINT64 alignment = 0,
		D3D12_HEAP_FLAGS flags = D3D12_HEAP_FLAG_NONE)
	{
		SizeInBytes = size;
		Properties = CD3DX12_HEAP_PROPERTIES(cpuPageProperty, memoryPoolPreference);
		Alignment = alignment;
		Flags = flags;
	}
	CD3DX12_HEAP_DESC(
		const D3D12_RESOURCE_ALLOCATION_INFO& resAllocInfo,
		D3D12_HEAP_PROPERTIES properties,
		D3D12_HEAP_FLAGS flags = D3D12_HEAP_FLAG_NONE)
	{
		SizeInBytes = resAllocInfo.SizeInBytes;
		Properties = properties;
		Alignment = resAllocInfo.Alignment;
		Flags = flags;
	}
	CD3DX12_HEAP_DESC(
		const D3D12_RESOURCE_ALLOCATION_INFO& resAllocInfo,
		D3D12_HEAP_TYPE type,
		D3D12_HEAP_FLAGS flags = D3D12_HEAP_FLAG_NONE)
	{
		SizeInBytes = resAllocInfo.SizeInBytes;
		Properties = CD3DX12_HEAP_PROPERTIES(type);
		Alignment = resAllocInfo.Alignment;
		Flags = flags;
	}
	CD3DX12_HEAP_DESC(
		const D3D12_RESOURCE_ALLOCATION_INFO& resAllocInfo,
		D3D12_CPU_PAGE_PROPERTY cpuPageProperty,
		D3D12_MEMORY_POOL memoryPoolPreference,
		D3D12_HEAP_FLAGS flags = D3D12_HEAP_FLAG_NONE)
	{
		SizeInBytes = resAllocInfo.SizeInBytes;
		Properties = CD3DX12_HEAP_PROPERTIES(cpuPageProperty, memoryPoolPreference);
		Alignment = resAllocInfo.Alignment;
		Flags = flags;
	}
	operator const D3D12_HEAP_DESC&() const { return *this; }
	bool IsCPUAccessible() const
	{
		return static_cast< const CD3DX12_HEAP_PROPERTIES* >(&Properties)->IsCPUAccessible();
	}
};
inline bool operator==(const D3D12_HEAP_DESC& l, const D3D12_HEAP_DESC& r)
{
	return l.SizeInBytes == r.SizeInBytes &&
		l.Properties == r.Properties &&
		l.Alignment == r.Alignment &&
		l.Flags == r.Flags;
}
inline bool operator!=(const D3D12_HEAP_DESC& l, const D3D12_HEAP_DESC& r)
{
	return !(l == r);
}

//------------------------------------------------------------------------------------------------
struct CD3DX12_CLEAR_VALUE : public D3D12_CLEAR_VALUE
{
	CD3DX12_CLEAR_VALUE()
	{}
	explicit CD3DX12_CLEAR_VALUE(const D3D12_CLEAR_VALUE &o) :
		D3D12_CLEAR_VALUE(o)
	{}
	CD3DX12_CLEAR_VALUE(
		DXGI_FORMAT format,
		const FLOAT color[4])
	{
		Format = format;
		memcpy(Color, color, sizeof(Color));
	}
	CD3DX12_CLEAR_VALUE(
		DXGI_FORMAT format,
		FLOAT depth,
		UINT8 stencil)
	{
		Format = format;
		/* Use memcpy to preserve NAN values */
		memcpy(&DepthStencil.Depth, &depth, sizeof(depth));
		DepthStencil.Stencil = stencil;
	}
	operator const D3D12_CLEAR_VALUE&() const { return *this; }
};

//------------------------------------------------------------------------------------------------
struct CD3DX12_RANGE : public D3D12_RANGE
{
	CD3DX12_RANGE()
	{}
	explicit CD3DX12_RANGE(const D3D12_RANGE &o) :
		D3D12_RANGE(o)
	{}
	CD3DX12_RANGE(
		SIZE_T begin,
		SIZE_T end)
	{
		Begin = begin;
		End = end;
	}
	operator const D3D12_RANGE&() const { return *this; }
};

//------------------------------------------------------------------------------------------------
struct CD3DX12_SHADER_BYTECODE : public D3D12_SHADER_BYTECODE
{
	CD3DX12_SHADER_BYTECODE()
	{}
	explicit CD3DX12_SHADER_BYTECODE(const D3D12_SHADER_BYTECODE &o) :
		D3D12_SHADER_BYTECODE(o)
	{}
	CD3DX12_SHADER_BYTECODE(
		ID3DBlob* pShaderBlob)
	{
		pShaderBytecode = pShaderBlob->GetBufferPointer();
		BytecodeLength = pShaderBlob->GetBufferSize();
	}
	CD3DX12_SHADER_BYTECODE(
		void* _pShaderBytecode,
		SIZE_T bytecodeLength)
	{
		pShaderBytecode = _pShaderBytecode;
		BytecodeLength = bytecodeLength;
	}
	operator const D3D12_SHADER_BYTECODE&() const { return *this; }
};

//------------------------------------------------------------------------------------------------
struct CD3DX12_TILED_RESOURCE_COORDINATE : public D3D12_TILED_RESOURCE_COORDINATE
{
	CD3DX12_TILED_RESOURCE_COORDINATE()
	{}
	explicit CD3DX12_TILED_RESOURCE_COORDINATE(const D3D12_TILED_RESOURCE_COORDINATE &o) :
		D3D12_TILED_RESOURCE_COORDINATE(o)
	{}
	CD3DX12_TILED_RESOURCE_COORDINATE(
		UINT x,
		UINT y,
		UINT z,
		UINT subresource)
	{
		X = x;
		Y = y;
		Z = z;
		Subresource = subresource;
	}
	operator const D3D12_TILED_RESOURCE_COORDINATE&() const { return *this; }
};

//------------------------------------------------------------------------------------------------
struct CD3DX12_TILE_REGION_SIZE : public D3D12_TILE_REGION_SIZE
{
	CD3DX12_TILE_REGION_SIZE()
	{}
	explicit CD3DX12_TILE_REGION_SIZE(const D3D12_TILE_REGION_SIZE &o) :
		D3D12_TILE_REGION_SIZE(o)
	{}
	CD3DX12_TILE_REGION_SIZE(
		UINT numTiles,
		BOOL useBox,
		UINT width,
		UINT16 height,
		UINT16 depth)
	{
		NumTiles = numTiles;
		UseBox = useBox;
		Width = width;
		Height = height;
		Depth = depth;
	}
	operator const D3D12_TILE_REGION_SIZE&() const { return *this; }
};

//------------------------------------------------------------------------------------------------
struct CD3DX12_SUBRESOURCE_TILING : public D3D12_SUBRESOURCE_TILING
{
	CD3DX12_SUBRESOURCE_TILING()
	{}
	explicit CD3DX12_SUBRESOURCE_TILING(const D3D12_SUBRESOURCE_TILING &o) :
		D3D12_SUBRESOURCE_TILING(o)
	{}
	CD3DX12_SUBRESOURCE_TILING(
		UINT widthInTiles,
		UINT16 heightInTiles,
		UINT16 depthInTiles,
		UINT startTileIndexInOverallResource)
	{
		WidthInTiles = widthInTiles;
		HeightInTiles = heightInTiles;
		DepthInTiles = depthInTiles;
		StartTileIndexInOverallResource = startTileIndexInOverallResource;
	}
	operator const D3D12_SUBRESOURCE_TILING&() const { return *this; }
};

//------------------------------------------------------------------------------------------------
struct CD3DX12_TILE_SHAPE : public D3D12_TILE_SHAPE
{
	CD3DX12_TILE_SHAPE()
	{}
	explicit CD3DX12_TILE_SHAPE(const D3D12_TILE_SHAPE &o) :
		D3D12_TILE_SHAPE(o)
	{}
	CD3DX12_TILE_SHAPE(
		UINT widthInTexels,
		UINT heightInTexels,
		UINT depthInTexels)
	{
		WidthInTexels = widthInTexels;
		HeightInTexels = heightInTexels;
		DepthInTexels = depthInTexels;
	}
	operator const D3D12_TILE_SHAPE&() const { return *this; }
};

//------------------------------------------------------------------------------------------------
struct CD3DX12_RESOURCE_BARRIER : public D3D12_RESOURCE_BARRIER
{
	CD3DX12_RESOURCE_BARRIER()
	{}
	explicit CD3DX12_RESOURCE_BARRIER(const D3D12_RESOURCE_BARRIER &o) :
		D3D12_RESOURCE_BARRIER(o)
	{}
	static inline CD3DX12_RESOURCE_BARRIER Transition(
		_In_ ID3D12Resource* pResource,
		D3D12_RESOURCE_STATES stateBefore,
		D3D12_RESOURCE_STATES stateAfter,
		UINT subresource = D3D12_RESOURCE_BARRIER_ALL_SUBRESOURCES,
		D3D12_RESOURCE_BARRIER_FLAGS flags = D3D12_RESOURCE_BARRIER_FLAG_NONE)
	{
		CD3DX12_RESOURCE_BARRIER result;
		ZeroMemory(&result, sizeof(result));
		D3D12_RESOURCE_BARRIER &barrier = result;
		result.Type = D3D12_RESOURCE_BARRIER_TYPE_TRANSITION;
		result.Flags = flags;
		barrier.Transition.pResource = pResource;
		barrier.Transition.StateBefore = stateBefore;
		barrier.Transition.StateAfter = stateAfter;
		barrier.Transition.Subresource = subresource;
		return result;
	}
	static inline CD3DX12_RESOURCE_BARRIER Aliasing(
		_In_ ID3D12Resource* pResourceBefore,
		_In_ ID3D12Resource* pResourceAfter)
	{
		CD3DX12_RESOURCE_BARRIER result;
		ZeroMemory(&result, sizeof(result));
		D3D12_RESOURCE_BARRIER &barrier = result;
		result.Type = D3D12_RESOURCE_BARRIER_TYPE_ALIASING;
		barrier.Aliasing.pResourceBefore = pResourceBefore;
		barrier.Aliasing.pResourceAfter = pResourceAfter;
		return result;
	}
	static inline CD3DX12_RESOURCE_BARRIER UAV(
		_In_ ID3D12Resource* pResource)
	{
		CD3DX12_RESOURCE_BARRIER result;
		ZeroMemory(&result, sizeof(result));
		D3D12_RESOURCE_BARRIER &barrier = result;
		result.Type = D3D12_RESOURCE_BARRIER_TYPE_UAV;
		barrier.UAV.pResource = pResource;
		return result;
	}
	operator const D3D12_RESOURCE_BARRIER&() const { return *this; }
};

//------------------------------------------------------------------------------------------------
struct CD3DX12_PACKED_MIP_INFO : public D3D12_PACKED_MIP_INFO
{
	CD3DX12_PACKED_MIP_INFO()
	{}
	explicit CD3DX12_PACKED_MIP_INFO(const D3D12_PACKED_MIP_INFO &o) :
		D3D12_PACKED_MIP_INFO(o)
	{}
	CD3DX12_PACKED_MIP_INFO(
		UINT8 numStandardMips,
		UINT8 numPackedMips,
		UINT numTilesForPackedMips,
		UINT startTileIndexInOverallResource)
	{
		NumStandardMips = numStandardMips;
		NumPackedMips = numPackedMips;
		NumTilesForPackedMips = numTilesForPackedMips;
		StartTileIndexInOverallResource = startTileIndexInOverallResource;
	}
	operator const D3D12_PACKED_MIP_INFO&() const { return *this; }
};

//------------------------------------------------------------------------------------------------
struct CD3DX12_SUBRESOURCE_FOOTPRINT : public D3D12_SUBRESOURCE_FOOTPRINT
{
	CD3DX12_SUBRESOURCE_FOOTPRINT()
	{}
	explicit CD3DX12_SUBRESOURCE_FOOTPRINT(const D3D12_SUBRESOURCE_FOOTPRINT &o) :
		D3D12_SUBRESOURCE_FOOTPRINT(o)
	{}
	CD3DX12_SUBRESOURCE_FOOTPRINT(
		DXGI_FORMAT format,
		UINT width,
		UINT height,
		UINT depth,
		UINT rowPitch)
	{
		Format = format;
		Width = width;
		Height = height;
		Depth = depth;
		RowPitch = rowPitch;
	}
	explicit CD3DX12_SUBRESOURCE_FOOTPRINT(
		const D3D12_RESOURCE_DESC& resDesc,
		UINT rowPitch)
	{
		Format = resDesc.Format;
		Width = UINT(resDesc.Width);
		Height = resDesc.Height;
		Depth = (resDesc.Dimension == D3D12_RESOURCE_DIMENSION_TEXTURE3D ? resDesc.DepthOrArraySize : 1);
		RowPitch = rowPitch;
	}
	operator const D3D12_SUBRESOURCE_FOOTPRINT&() const { return *this; }
};

//------------------------------------------------------------------------------------------------
struct CD3DX12_TEXTURE_COPY_LOCATION : public D3D12_TEXTURE_COPY_LOCATION
{
	CD3DX12_TEXTURE_COPY_LOCATION()
	{}
	explicit CD3DX12_TEXTURE_COPY_LOCATION(const D3D12_TEXTURE_COPY_LOCATION &o) :
		D3D12_TEXTURE_COPY_LOCATION(o)
	{}
	CD3DX12_TEXTURE_COPY_LOCATION(ID3D12Resource* pRes) { pResource = pRes; }
	CD3DX12_TEXTURE_COPY_LOCATION(ID3D12Resource* pRes, D3D12_PLACED_SUBRESOURCE_FOOTPRINT const& Footprint)
	{
		pResource = pRes;
		Type = D3D12_TEXTURE_COPY_TYPE_PLACED_FOOTPRINT;
		PlacedFootprint = Footprint;
	}
	CD3DX12_TEXTURE_COPY_LOCATION(ID3D12Resource* pRes, UINT Sub)
	{
		pResource = pRes;
		Type = D3D12_TEXTURE_COPY_TYPE_SUBRESOURCE_INDEX;
		SubresourceIndex = Sub;
	}
};

//------------------------------------------------------------------------------------------------
struct CD3DX12_DESCRIPTOR_RANGE : public D3D12_DESCRIPTOR_RANGE
{
	CD3DX12_DESCRIPTOR_RANGE() { }
	explicit CD3DX12_DESCRIPTOR_RANGE(const D3D12_DESCRIPTOR_RANGE &o) :
		D3D12_DESCRIPTOR_RANGE(o)
	{}
	CD3DX12_DESCRIPTOR_RANGE(
		D3D12_DESCRIPTOR_RANGE_TYPE rangeType,
		UINT numDescriptors,
		UINT baseShaderRegister,
		UINT registerSpace = 0,
		UINT offsetInDescriptorsFromTableStart =
		D3D12_DESCRIPTOR_RANGE_OFFSET_APPEND)
	{
		Init(rangeType, numDescriptors, baseShaderRegister, registerSpace, offsetInDescriptorsFromTableStart);
	}

	inline void Init(
		D3D12_DESCRIPTOR_RANGE_TYPE rangeType,
		UINT numDescriptors,
		UINT baseShaderRegister,
		UINT registerSpace = 0,
		UINT offsetInDescriptorsFromTableStart =
		D3D12_DESCRIPTOR_RANGE_OFFSET_APPEND)
	{
		Init(*this, rangeType, numDescriptors, baseShaderRegister, registerSpace, offsetInDescriptorsFromTableStart);
	}

	static inline void Init(
		_Out_ D3D12_DESCRIPTOR_RANGE &range,
		D3D12_DESCRIPTOR_RANGE_TYPE rangeType,
		UINT numDescriptors,
		UINT baseShaderRegister,
		UINT registerSpace = 0,
		UINT offsetInDescriptorsFromTableStart =
		D3D12_DESCRIPTOR_RANGE_OFFSET_APPEND)
	{
		range.RangeType = rangeType;
		range.NumDescriptors = numDescriptors;
		range.BaseShaderRegister = baseShaderRegister;
		range.RegisterSpace = registerSpace;
		range.OffsetInDescriptorsFromTableStart = offsetInDescriptorsFromTableStart;
	}
};

//------------------------------------------------------------------------------------------------
struct CD3DX12_ROOT_DESCRIPTOR_TABLE : public D3D12_ROOT_DESCRIPTOR_TABLE
{
	CD3DX12_ROOT_DESCRIPTOR_TABLE() {}
	explicit CD3DX12_ROOT_DESCRIPTOR_TABLE(const D3D12_ROOT_DESCRIPTOR_TABLE &o) :
		D3D12_ROOT_DESCRIPTOR_TABLE(o)
	{}
	CD3DX12_ROOT_DESCRIPTOR_TABLE(
		UINT numDescriptorRanges,
		_In_reads_opt_(numDescriptorRanges) const D3D12_DESCRIPTOR_RANGE* _pDescriptorRanges)
	{
		Init(numDescriptorRanges, _pDescriptorRanges);
	}

	inline void Init(
		UINT numDescriptorRanges,
		_In_reads_opt_(numDescriptorRanges) const D3D12_DESCRIPTOR_RANGE* _pDescriptorRanges)
	{
		Init(*this, numDescriptorRanges, _pDescriptorRanges);
	}

	static inline void Init(
		_Out_ D3D12_ROOT_DESCRIPTOR_TABLE &rootDescriptorTable,
		UINT numDescriptorRanges,
		_In_reads_opt_(numDescriptorRanges) const D3D12_DESCRIPTOR_RANGE* _pDescriptorRanges)
	{
		rootDescriptorTable.NumDescriptorRanges = numDescriptorRanges;
		rootDescriptorTable.pDescriptorRanges = _pDescriptorRanges;
	}
};

//------------------------------------------------------------------------------------------------
struct CD3DX12_ROOT_CONSTANTS : public D3D12_ROOT_CONSTANTS
{
	CD3DX12_ROOT_CONSTANTS() {}
	explicit CD3DX12_ROOT_CONSTANTS(const D3D12_ROOT_CONSTANTS &o) :
		D3D12_ROOT_CONSTANTS(o)
	{}
	CD3DX12_ROOT_CONSTANTS(
		UINT num32BitValues,
		UINT shaderRegister,
		UINT registerSpace = 0)
	{
		Init(num32BitValues, shaderRegister, registerSpace);
	}

	inline void Init(
		UINT num32BitValues,
		UINT shaderRegister,
		UINT registerSpace = 0)
	{
		Init(*this, num32BitValues, shaderRegister, registerSpace);
	}

	static inline void Init(
		_Out_ D3D12_ROOT_CONSTANTS &rootConstants,
		UINT num32BitValues,
		UINT shaderRegister,
		UINT registerSpace = 0)
	{
		rootConstants.Num32BitValues = num32BitValues;
		rootConstants.ShaderRegister = shaderRegister;
		rootConstants.RegisterSpace = registerSpace;
	}
};

//------------------------------------------------------------------------------------------------
struct CD3DX12_ROOT_DESCRIPTOR : public D3D12_ROOT_DESCRIPTOR
{
	CD3DX12_ROOT_DESCRIPTOR() {}
	explicit CD3DX12_ROOT_DESCRIPTOR(const D3D12_ROOT_DESCRIPTOR &o) :
		D3D12_ROOT_DESCRIPTOR(o)
	{}
	CD3DX12_ROOT_DESCRIPTOR(
		UINT shaderRegister,
		UINT registerSpace = 0)
	{
		Init(shaderRegister, registerSpace);
	}

	inline void Init(
		UINT shaderRegister,
		UINT registerSpace = 0)
	{
		Init(*this, shaderRegister, registerSpace);
	}

	static inline void Init(_Out_ D3D12_ROOT_DESCRIPTOR &table, UINT shaderRegister, UINT registerSpace = 0)
	{
		table.ShaderRegister = shaderRegister;
		table.RegisterSpace = registerSpace;
	}
};

//------------------------------------------------------------------------------------------------
struct CD3DX12_ROOT_PARAMETER : public D3D12_ROOT_PARAMETER
{
	CD3DX12_ROOT_PARAMETER() {}
	explicit CD3DX12_ROOT_PARAMETER(const D3D12_ROOT_PARAMETER &o) :
		D3D12_ROOT_PARAMETER(o)
	{}

	static inline void InitAsDescriptorTable(
		_Out_ D3D12_ROOT_PARAMETER &rootParam,
		UINT numDescriptorRanges,
		_In_reads_(numDescriptorRanges) const D3D12_DESCRIPTOR_RANGE* pDescriptorRanges,
		D3D12_SHADER_VISIBILITY visibility = D3D12_SHADER_VISIBILITY_ALL)
	{
		rootParam.ParameterType = D3D12_ROOT_PARAMETER_TYPE_DESCRIPTOR_TABLE;
		rootParam.ShaderVisibility = visibility;
		CD3DX12_ROOT_DESCRIPTOR_TABLE::Init(rootParam.DescriptorTable, numDescriptorRanges, pDescriptorRanges);
	}

	static inline void InitAsConstants(
		_Out_ D3D12_ROOT_PARAMETER &rootParam,
		UINT num32BitValues,
		UINT shaderRegister,
		UINT registerSpace = 0,
		D3D12_SHADER_VISIBILITY visibility = D3D12_SHADER_VISIBILITY_ALL)
	{
		rootParam.ParameterType = D3D12_ROOT_PARAMETER_TYPE_32BIT_CONSTANTS;
		rootParam.ShaderVisibility = visibility;
		CD3DX12_ROOT_CONSTANTS::Init(rootParam.Constants, num32BitValues, shaderRegister, registerSpace);
	}

	static inline void InitAsConstantBufferView(
		_Out_ D3D12_ROOT_PARAMETER &rootParam,
		UINT shaderRegister,
		UINT registerSpace = 0,
		D3D12_SHADER_VISIBILITY visibility = D3D12_SHADER_VISIBILITY_ALL)
	{
		rootParam.ParameterType = D3D12_ROOT_PARAMETER_TYPE_CBV;
		rootParam.ShaderVisibility = visibility;
		CD3DX12_ROOT_DESCRIPTOR::Init(rootParam.Descriptor, shaderRegister, registerSpace);
	}

	static inline void InitAsShaderResourceView(
		_Out_ D3D12_ROOT_PARAMETER &rootParam,
		UINT shaderRegister,
		UINT registerSpace = 0,
		D3D12_SHADER_VISIBILITY visibility = D3D12_SHADER_VISIBILITY_ALL)
	{
		rootParam.ParameterType = D3D12_ROOT_PARAMETER_TYPE_SRV;
		rootParam.ShaderVisibility = visibility;
		CD3DX12_ROOT_DESCRIPTOR::Init(rootParam.Descriptor, shaderRegister, registerSpace);
	}

	static inline void InitAsUnorderedAccessView(
		_Out_ D3D12_ROOT_PARAMETER &rootParam,
		UINT shaderRegister,
		UINT registerSpace = 0,
		D3D12_SHADER_VISIBILITY visibility = D3D12_SHADER_VISIBILITY_ALL)
	{
		rootParam.ParameterType = D3D12_ROOT_PARAMETER_TYPE_UAV;
		rootParam.ShaderVisibility = visibility;
		CD3DX12_ROOT_DESCRIPTOR::Init(rootParam.Descriptor, shaderRegister, registerSpace);
	}

	inline void InitAsDescriptorTable(
		UINT numDescriptorRanges,
		_In_reads_(numDescriptorRanges) const D3D12_DESCRIPTOR_RANGE* pDescriptorRanges,
		D3D12_SHADER_VISIBILITY visibility = D3D12_SHADER_VISIBILITY_ALL)
	{
		InitAsDescriptorTable(*this, numDescriptorRanges, pDescriptorRanges, visibility);
	}

	inline void InitAsConstants(
		UINT num32BitValues,
		UINT shaderRegister,
		UINT registerSpace = 0,
		D3D12_SHADER_VISIBILITY visibility = D3D12_SHADER_VISIBILITY_ALL)
	{
		InitAsConstants(*this, num32BitValues, shaderRegister, registerSpace, visibility);
	}

	inline void InitAsConstantBufferView(
		UINT shaderRegister,
		UINT registerSpace = 0,
		D3D12_SHADER_VISIBILITY visibility = D3D12_SHADER_VISIBILITY_ALL)
	{
		InitAsConstantBufferView(*this, shaderRegister, registerSpace, visibility);
	}

	inline void InitAsShaderResourceView(
		UINT shaderRegister,
		UINT registerSpace = 0,
		D3D12_SHADER_VISIBILITY visibility = D3D12_SHADER_VISIBILITY_ALL)
	{
		InitAsShaderResourceView(*this, shaderRegister, registerSpace, visibility);
	}

	inline void InitAsUnorderedAccessView(
		UINT shaderRegister,
		UINT registerSpace = 0,
		D3D12_SHADER_VISIBILITY visibility = D3D12_SHADER_VISIBILITY_ALL)
	{
		InitAsUnorderedAccessView(*this, shaderRegister, registerSpace, visibility);
	}
};

//------------------------------------------------------------------------------------------------
struct CD3DX12_STATIC_SAMPLER_DESC : public D3D12_STATIC_SAMPLER_DESC
{
	CD3DX12_STATIC_SAMPLER_DESC() {}
	explicit CD3DX12_STATIC_SAMPLER_DESC(const D3D12_STATIC_SAMPLER_DESC &o) :
		D3D12_STATIC_SAMPLER_DESC(o)
	{}
	CD3DX12_STATIC_SAMPLER_DESC(
		UINT shaderRegister,
		D3D12_FILTER filter = D3D12_FILTER_ANISOTROPIC,
		D3D12_TEXTURE_ADDRESS_MODE addressU = D3D12_TEXTURE_ADDRESS_MODE_WRAP,
		D3D12_TEXTURE_ADDRESS_MODE addressV = D3D12_TEXTURE_ADDRESS_MODE_WRAP,
		D3D12_TEXTURE_ADDRESS_MODE addressW = D3D12_TEXTURE_ADDRESS_MODE_WRAP,
		FLOAT mipLODBias = 0,
		UINT maxAnisotropy = 16,
		D3D12_COMPARISON_FUNC comparisonFunc = D3D12_COMPARISON_FUNC_LESS_EQUAL,
		D3D12_STATIC_BORDER_COLOR borderColor = D3D12_STATIC_BORDER_COLOR_OPAQUE_WHITE,
		FLOAT minLOD = 0.f,
		FLOAT maxLOD = D3D12_FLOAT32_MAX,
		D3D12_SHADER_VISIBILITY shaderVisibility = D3D12_SHADER_VISIBILITY_ALL,
		UINT registerSpace = 0)
	{
		Init(
			shaderRegister,
			filter,
			addressU,
			addressV,
			addressW,
			mipLODBias,
			maxAnisotropy,
			comparisonFunc,
			borderColor,
			minLOD,
			maxLOD,
			shaderVisibility,
			registerSpace);
	}

	static inline void Init(
		_Out_ D3D12_STATIC_SAMPLER_DESC &samplerDesc,
		UINT shaderRegister,
		D3D12_FILTER filter = D3D12_FILTER_ANISOTROPIC,
		D3D12_TEXTURE_ADDRESS_MODE addressU = D3D12_TEXTURE_ADDRESS_MODE_WRAP,
		D3D12_TEXTURE_ADDRESS_MODE addressV = D3D12_TEXTURE_ADDRESS_MODE_WRAP,
		D3D12_TEXTURE_ADDRESS_MODE addressW = D3D12_TEXTURE_ADDRESS_MODE_WRAP,
		FLOAT mipLODBias = 0,
		UINT maxAnisotropy = 16,
		D3D12_COMPARISON_FUNC comparisonFunc = D3D12_COMPARISON_FUNC_LESS_EQUAL,
		D3D12_STATIC_BORDER_COLOR borderColor = D3D12_STATIC_BORDER_COLOR_OPAQUE_WHITE,
		FLOAT minLOD = 0.f,
		FLOAT maxLOD = D3D12_FLOAT32_MAX,
		D3D12_SHADER_VISIBILITY shaderVisibility = D3D12_SHADER_VISIBILITY_ALL,
		UINT registerSpace = 0)
	{
		samplerDesc.ShaderRegister = shaderRegister;
		samplerDesc.Filter = filter;
		samplerDesc.AddressU = addressU;
		samplerDesc.AddressV = addressV;
		samplerDesc.AddressW = addressW;
		samplerDesc.MipLODBias = mipLODBias;
		samplerDesc.MaxAnisotropy = maxAnisotropy;
		samplerDesc.ComparisonFunc = comparisonFunc;
		samplerDesc.BorderColor = borderColor;
		samplerDesc.MinLOD = minLOD;
		samplerDesc.MaxLOD = maxLOD;
		samplerDesc.ShaderVisibility = shaderVisibility;
		samplerDesc.RegisterSpace = registerSpace;
	}
	inline void Init(
		UINT shaderRegister,
		D3D12_FILTER filter = D3D12_FILTER_ANISOTROPIC,
		D3D12_TEXTURE_ADDRESS_MODE addressU = D3D12_TEXTURE_ADDRESS_MODE_WRAP,
		D3D12_TEXTURE_ADDRESS_MODE addressV = D3D12_TEXTURE_ADDRESS_MODE_WRAP,
		D3D12_TEXTURE_ADDRESS_MODE addressW = D3D12_TEXTURE_ADDRESS_MODE_WRAP,
		FLOAT mipLODBias = 0,
		UINT maxAnisotropy = 16,
		D3D12_COMPARISON_FUNC comparisonFunc = D3D12_COMPARISON_FUNC_LESS_EQUAL,
		D3D12_STATIC_BORDER_COLOR borderColor = D3D12_STATIC_BORDER_COLOR_OPAQUE_WHITE,
		FLOAT minLOD = 0.f,
		FLOAT maxLOD = D3D12_FLOAT32_MAX,
		D3D12_SHADER_VISIBILITY shaderVisibility = D3D12_SHADER_VISIBILITY_ALL,
		UINT registerSpace = 0)
	{
		Init(
			*this,
			shaderRegister,
			filter,
			addressU,
			addressV,
			addressW,
			mipLODBias,
			maxAnisotropy,
			comparisonFunc,
			borderColor,
			minLOD,
			maxLOD,
			shaderVisibility,
			registerSpace);
	}

};

//------------------------------------------------------------------------------------------------
struct CD3DX12_ROOT_SIGNATURE_DESC : public D3D12_ROOT_SIGNATURE_DESC
{
	CD3DX12_ROOT_SIGNATURE_DESC() {}
	explicit CD3DX12_ROOT_SIGNATURE_DESC(const D3D12_ROOT_SIGNATURE_DESC &o) :
		D3D12_ROOT_SIGNATURE_DESC(o)
	{}
	CD3DX12_ROOT_SIGNATURE_DESC(
		UINT numParameters,
		_In_reads_opt_(numParameters) const D3D12_ROOT_PARAMETER* _pParameters,
		UINT numStaticSamplers = 0,
		_In_reads_opt_(numStaticSamplers) const D3D12_STATIC_SAMPLER_DESC* _pStaticSamplers = NULL,
		D3D12_ROOT_SIGNATURE_FLAGS flags = D3D12_ROOT_SIGNATURE_FLAG_NONE)
	{
		Init(numParameters, _pParameters, numStaticSamplers, _pStaticSamplers, flags);
	}
	CD3DX12_ROOT_SIGNATURE_DESC(CD3DX12_DEFAULT)
	{
		Init(0, NULL, 0, NULL, D3D12_ROOT_SIGNATURE_FLAG_NONE);
	}

	inline void Init(
		UINT numParameters,
		_In_reads_opt_(numParameters) const D3D12_ROOT_PARAMETER* _pParameters,
		UINT numStaticSamplers = 0,
		_In_reads_opt_(numStaticSamplers) const D3D12_STATIC_SAMPLER_DESC* _pStaticSamplers = NULL,
		D3D12_ROOT_SIGNATURE_FLAGS flags = D3D12_ROOT_SIGNATURE_FLAG_NONE)
	{
		Init(*this, numParameters, _pParameters, numStaticSamplers, _pStaticSamplers, flags);
	}

	static inline void Init(
		_Out_ D3D12_ROOT_SIGNATURE_DESC &desc,
		UINT numParameters,
		_In_reads_opt_(numParameters) const D3D12_ROOT_PARAMETER* _pParameters,
		UINT numStaticSamplers = 0,
		_In_reads_opt_(numStaticSamplers) const D3D12_STATIC_SAMPLER_DESC* _pStaticSamplers = NULL,
		D3D12_ROOT_SIGNATURE_FLAGS flags = D3D12_ROOT_SIGNATURE_FLAG_NONE)
	{
		desc.NumParameters = numParameters;
		desc.pParameters = _pParameters;
		desc.NumStaticSamplers = numStaticSamplers;
		desc.pStaticSamplers = _pStaticSamplers;
		desc.Flags = flags;
	}
};

//------------------------------------------------------------------------------------------------
struct CD3DX12_CPU_DESCRIPTOR_HANDLE : public D3D12_CPU_DESCRIPTOR_HANDLE
{
	CD3DX12_CPU_DESCRIPTOR_HANDLE() {}
	explicit CD3DX12_CPU_DESCRIPTOR_HANDLE(const D3D12_CPU_DESCRIPTOR_HANDLE &o) :
		D3D12_CPU_DESCRIPTOR_HANDLE(o)
	{}
	CD3DX12_CPU_DESCRIPTOR_HANDLE(CD3DX12_DEFAULT) { ptr = 0; }
	CD3DX12_CPU_DESCRIPTOR_HANDLE(_In_ const D3D12_CPU_DESCRIPTOR_HANDLE &other, INT offsetScaledByIncrementSize)
	{
		InitOffsetted(other, offsetScaledByIncrementSize);
	}
	CD3DX12_CPU_DESCRIPTOR_HANDLE(_In_ const D3D12_CPU_DESCRIPTOR_HANDLE &other, INT offsetInDescriptors, UINT descriptorIncrementSize)
	{
		InitOffsetted(other, offsetInDescriptors, descriptorIncrementSize);
	}
	CD3DX12_CPU_DESCRIPTOR_HANDLE& Offset(INT offsetInDescriptors, UINT descriptorIncrementSize)
	{
		ptr += offsetInDescriptors * descriptorIncrementSize;
		return *this;
	}
	CD3DX12_CPU_DESCRIPTOR_HANDLE& Offset(INT offsetScaledByIncrementSize)
	{
		ptr += offsetScaledByIncrementSize;
		return *this;
	}
	bool operator==(_In_ const D3D12_CPU_DESCRIPTOR_HANDLE& other)
	{
		return (ptr == other.ptr);
	}
	bool operator!=(_In_ const D3D12_CPU_DESCRIPTOR_HANDLE& other)
	{
		return (ptr != other.ptr);
	}
	CD3DX12_CPU_DESCRIPTOR_HANDLE &operator=(const D3D12_CPU_DESCRIPTOR_HANDLE &other)
	{
		ptr = other.ptr;
		return *this;
	}

	inline void InitOffsetted(_In_ const D3D12_CPU_DESCRIPTOR_HANDLE &base, INT offsetScaledByIncrementSize)
	{
		InitOffsetted(*this, base, offsetScaledByIncrementSize);
	}

	inline void InitOffsetted(_In_ const D3D12_CPU_DESCRIPTOR_HANDLE &base, INT offsetInDescriptors, UINT descriptorIncrementSize)
	{
		InitOffsetted(*this, base, offsetInDescriptors, descriptorIncrementSize);
	}

	static inline void InitOffsetted(_Out_ D3D12_CPU_DESCRIPTOR_HANDLE &handle, _In_ const D3D12_CPU_DESCRIPTOR_HANDLE &base, INT offsetScaledByIncrementSize)
	{
		handle.ptr = base.ptr + offsetScaledByIncrementSize;
	}

	static inline void InitOffsetted(_Out_ D3D12_CPU_DESCRIPTOR_HANDLE &handle, _In_ const D3D12_CPU_DESCRIPTOR_HANDLE &base, INT offsetInDescriptors, UINT descriptorIncrementSize)
	{
		handle.ptr = base.ptr + offsetInDescriptors * descriptorIncrementSize;
	}
};

//------------------------------------------------------------------------------------------------
struct CD3DX12_GPU_DESCRIPTOR_HANDLE : public D3D12_GPU_DESCRIPTOR_HANDLE
{
	CD3DX12_GPU_DESCRIPTOR_HANDLE() {}
	explicit CD3DX12_GPU_DESCRIPTOR_HANDLE(const D3D12_GPU_DESCRIPTOR_HANDLE &o) :
		D3D12_GPU_DESCRIPTOR_HANDLE(o)
	{}
	CD3DX12_GPU_DESCRIPTOR_HANDLE(CD3DX12_DEFAULT) { ptr = 0; }
	CD3DX12_GPU_DESCRIPTOR_HANDLE(_In_ const D3D12_GPU_DESCRIPTOR_HANDLE &other, INT offsetScaledByIncrementSize)
	{
		InitOffsetted(other, offsetScaledByIncrementSize);
	}
	CD3DX12_GPU_DESCRIPTOR_HANDLE(_In_ const D3D12_GPU_DESCRIPTOR_HANDLE &other, INT offsetInDescriptors, UINT descriptorIncrementSize)
	{
		InitOffsetted(other, offsetInDescriptors, descriptorIncrementSize);
	}
	CD3DX12_GPU_DESCRIPTOR_HANDLE& Offset(INT offsetInDescriptors, UINT descriptorIncrementSize)
	{
		ptr += offsetInDescriptors * descriptorIncrementSize;
		return *this;
	}
	CD3DX12_GPU_DESCRIPTOR_HANDLE& Offset(INT offsetScaledByIncrementSize)
	{
		ptr += offsetScaledByIncrementSize;
		return *this;
	}
	inline bool operator==(_In_ const D3D12_GPU_DESCRIPTOR_HANDLE& other)
	{
		return (ptr == other.ptr);
	}
	inline bool operator!=(_In_ const D3D12_GPU_DESCRIPTOR_HANDLE& other)
	{
		return (ptr != other.ptr);
	}
	CD3DX12_GPU_DESCRIPTOR_HANDLE &operator=(const D3D12_GPU_DESCRIPTOR_HANDLE &other)
	{
		ptr = other.ptr;
		return *this;
	}

	inline void InitOffsetted(_In_ const D3D12_GPU_DESCRIPTOR_HANDLE &base, INT offsetScaledByIncrementSize)
	{
		InitOffsetted(*this, base, offsetScaledByIncrementSize);
	}

	inline void InitOffsetted(_In_ const D3D12_GPU_DESCRIPTOR_HANDLE &base, INT offsetInDescriptors, UINT descriptorIncrementSize)
	{
		InitOffsetted(*this, base, offsetInDescriptors, descriptorIncrementSize);
	}

	static inline void InitOffsetted(_Out_ D3D12_GPU_DESCRIPTOR_HANDLE &handle, _In_ const D3D12_GPU_DESCRIPTOR_HANDLE &base, INT offsetScaledByIncrementSize)
	{
		handle.ptr = base.ptr + offsetScaledByIncrementSize;
	}

	static inline void InitOffsetted(_Out_ D3D12_GPU_DESCRIPTOR_HANDLE &handle, _In_ const D3D12_GPU_DESCRIPTOR_HANDLE &base, INT offsetInDescriptors, UINT descriptorIncrementSize)
	{
		handle.ptr = base.ptr + offsetInDescriptors * descriptorIncrementSize;
	}
};

//------------------------------------------------------------------------------------------------
inline UINT D3D12CalcSubresource(UINT MipSlice, UINT ArraySlice, UINT PlaneSlice, UINT MipLevels, UINT ArraySize)
{
	return MipSlice + ArraySlice * MipLevels + PlaneSlice * MipLevels * ArraySize;
}

//------------------------------------------------------------------------------------------------
template <typename T, typename U, typename V>
inline void D3D12DecomposeSubresource(UINT Subresource, UINT MipLevels, UINT ArraySize, _Out_ T& MipSlice, _Out_ U& ArraySlice, _Out_ V& PlaneSlice)
{
	MipSlice = static_cast<T>(Subresource % MipLevels);
	ArraySlice = static_cast<U>((Subresource / MipLevels) % ArraySize);
	PlaneSlice = static_cast<V>(Subresource / (MipLevels * ArraySize));
}

//------------------------------------------------------------------------------------------------
inline UINT8 D3D12GetFormatPlaneCount(
	_In_ ID3D12Device* pDevice,
	DXGI_FORMAT Format
	)
{
	D3D12_FEATURE_DATA_FORMAT_INFO formatInfo = { Format };
	if (FAILED(pDevice->CheckFeatureSupport(D3D12_FEATURE_FORMAT_INFO, &formatInfo, sizeof(formatInfo))))
	{
		return 0;
	}
	return formatInfo.PlaneCount;
}

//------------------------------------------------------------------------------------------------
struct CD3DX12_RESOURCE_DESC : public D3D12_RESOURCE_DESC
{
	CD3DX12_RESOURCE_DESC()
	{}
	explicit CD3DX12_RESOURCE_DESC(const D3D12_RESOURCE_DESC& o) :
		D3D12_RESOURCE_DESC(o)
	{}
	CD3DX12_RESOURCE_DESC(
		D3D12_RESOURCE_DIMENSION dimension,
		UINT64 alignment,
		UINT64 width,
		UINT height,
		UINT16 depthOrArraySize,
		UINT16 mipLevels,
		DXGI_FORMAT format,
		UINT sampleCount,
		UINT sampleQuality,
		D3D12_TEXTURE_LAYOUT layout,
		D3D12_RESOURCE_FLAGS flags)
	{
		Dimension = dimension;
		Alignment = alignment;
		Width = width;
		Height = height;
		DepthOrArraySize = depthOrArraySize;
		MipLevels = mipLevels;
		Format = format;
		SampleDesc.Count = sampleCount;
		SampleDesc.Quality = sampleQuality;
		Layout = layout;
		Flags = flags;
	}
	static inline CD3DX12_RESOURCE_DESC Buffer(
		const D3D12_RESOURCE_ALLOCATION_INFO& resAllocInfo,
		D3D12_RESOURCE_FLAGS flags = D3D12_RESOURCE_FLAG_NONE)
	{
		return CD3DX12_RESOURCE_DESC(D3D12_RESOURCE_DIMENSION_BUFFER, resAllocInfo.Alignment, resAllocInfo.SizeInBytes,
			1, 1, 1, DXGI_FORMAT_UNKNOWN, 1, 0, D3D12_TEXTURE_LAYOUT_ROW_MAJOR, flags);
	}
	static inline CD3DX12_RESOURCE_DESC Buffer(
		UINT64 width,
		D3D12_RESOURCE_FLAGS flags = D3D12_RESOURCE_FLAG_NONE,
		UINT64 alignment = 0)
	{
		return CD3DX12_RESOURCE_DESC(D3D12_RESOURCE_DIMENSION_BUFFER, alignment, width, 1, 1, 1,
			DXGI_FORMAT_UNKNOWN, 1, 0, D3D12_TEXTURE_LAYOUT_ROW_MAJOR, flags);
	}
	static inline CD3DX12_RESOURCE_DESC Tex1D(
		DXGI_FORMAT format,
		UINT64 width,
		UINT16 arraySize = 1,
		UINT16 mipLevels = 0,
		D3D12_RESOURCE_FLAGS flags = D3D12_RESOURCE_FLAG_NONE,
		D3D12_TEXTURE_LAYOUT layout = D3D12_TEXTURE_LAYOUT_UNKNOWN,
		UINT64 alignment = 0)
	{
		return CD3DX12_RESOURCE_DESC(D3D12_RESOURCE_DIMENSION_TEXTURE1D, alignment, width, 1, arraySize,
			mipLevels, format, 1, 0, layout, flags);
	}
	static inline CD3DX12_RESOURCE_DESC Tex2D(
		DXGI_FORMAT format,
		UINT64 width,
		UINT height,
		UINT16 arraySize = 1,
		UINT16 mipLevels = 0,
		UINT sampleCount = 1,
		UINT sampleQuality = 0,
		D3D12_RESOURCE_FLAGS flags = D3D12_RESOURCE_FLAG_NONE,
		D3D12_TEXTURE_LAYOUT layout = D3D12_TEXTURE_LAYOUT_UNKNOWN,
		UINT64 alignment = 0)
	{
		return CD3DX12_RESOURCE_DESC(D3D12_RESOURCE_DIMENSION_TEXTURE2D, alignment, width, height, arraySize,
			mipLevels, format, sampleCount, sampleQuality, layout, flags);
	}
	static inline CD3DX12_RESOURCE_DESC Tex3D(
		DXGI_FORMAT format,
		UINT64 width,
		UINT height,
		UINT16 depth,
		UINT16 mipLevels = 0,
		D3D12_RESOURCE_FLAGS flags = D3D12_RESOURCE_FLAG_NONE,
		D3D12_TEXTURE_LAYOUT layout = D3D12_TEXTURE_LAYOUT_UNKNOWN,
		UINT64 alignment = 0)
	{
		return CD3DX12_RESOURCE_DESC(D3D12_RESOURCE_DIMENSION_TEXTURE3D, alignment, width, height, depth,
			mipLevels, format, 1, 0, layout, flags);
	}
	inline UINT16 Depth() const
	{
		return (Dimension == D3D12_RESOURCE_DIMENSION_TEXTURE3D ? DepthOrArraySize : 1);
	}
	inline UINT16 ArraySize() const
	{
		return (Dimension != D3D12_RESOURCE_DIMENSION_TEXTURE3D ? DepthOrArraySize : 1);
	}
	inline UINT8 PlaneCount(_In_ ID3D12Device* pDevice) const
	{
		return D3D12GetFormatPlaneCount(pDevice, Format);
	}
	inline UINT Subresources(_In_ ID3D12Device* pDevice) const
	{
		return MipLevels * ArraySize() * PlaneCount(pDevice);
	}
	inline UINT CalcSubresource(UINT MipSlice, UINT ArraySlice, UINT PlaneSlice)
	{
		return D3D12CalcSubresource(MipSlice, ArraySlice, PlaneSlice, MipLevels, ArraySize());
	}
	operator const D3D12_RESOURCE_DESC&() const { return *this; }
};
inline bool operator==(const D3D12_RESOURCE_DESC& l, const D3D12_RESOURCE_DESC& r)
{
	return l.Dimension == r.Dimension &&
		l.Alignment == r.Alignment &&
		l.Width == r.Width &&
		l.Height == r.Height &&
		l.DepthOrArraySize == r.DepthOrArraySize &&
		l.MipLevels == r.MipLevels &&
		l.Format == r.Format &&
		l.SampleDesc.Count == r.SampleDesc.Count &&
		l.SampleDesc.Quality == r.SampleDesc.Quality &&
		l.Layout == r.Layout &&
		l.Flags == r.Flags;
}
inline bool operator!=(const D3D12_RESOURCE_DESC& l, const D3D12_RESOURCE_DESC& r)
{
	return !(l == r);
}

//------------------------------------------------------------------------------------------------
// Row-by-row memcpy
inline void MemcpySubresource(
	_In_ const D3D12_MEMCPY_DEST* pDest,
	_In_ const D3D12_SUBRESOURCE_DATA* pSrc,
	SIZE_T RowSizeInBytes,
	UINT NumRows,
	UINT NumSlices)
{
	for (UINT z = 0; z < NumSlices; ++z)
	{
		BYTE* pDestSlice = reinterpret_cast<BYTE*>(pDest->pData) + pDest->SlicePitch * z;
		const BYTE* pSrcSlice = reinterpret_cast<const BYTE*>(pSrc->pData) + pSrc->SlicePitch * z;
		for (UINT y = 0; y < NumRows; ++y)
		{
			memcpy(pDestSlice + pDest->RowPitch * y,
				pSrcSlice + pSrc->RowPitch * y,
				RowSizeInBytes);
		}
	}
}

//------------------------------------------------------------------------------------------------
// Returns required size of a buffer to be used for data upload
inline UINT64 GetRequiredIntermediateSize(
	_In_ ID3D12Resource* pDestinationResource,
	_In_range_(0, D3D12_REQ_SUBRESOURCES) UINT FirstSubresource,
	_In_range_(0, D3D12_REQ_SUBRESOURCES - FirstSubresource) UINT NumSubresources)
{
	D3D12_RESOURCE_DESC Desc = pDestinationResource->GetDesc();
	UINT64 RequiredSize = 0;

	ID3D12Device* pDevice;
	pDestinationResource->GetDevice(__uuidof(*pDevice), reinterpret_cast<void**>(&pDevice));
	pDevice->GetCopyableFootprints(&Desc, FirstSubresource, NumSubresources, 0, nullptr, nullptr, nullptr, &RequiredSize);
	pDevice->Release();

	return RequiredSize;
}

//------------------------------------------------------------------------------------------------
// All arrays must be populated (e.g. by calling GetCopyableFootprints)
inline UINT64 UpdateSubresources(
	_In_ ID3D12GraphicsCommandList* pCmdList,
	_In_ ID3D12Resource* pDestinationResource,
	_In_ ID3D12Resource* pIntermediate,
	_In_range_(0, D3D12_REQ_SUBRESOURCES) UINT FirstSubresource,
	_In_range_(0, D3D12_REQ_SUBRESOURCES - FirstSubresource) UINT NumSubresources,
	UINT64 RequiredSize,
	_In_reads_(NumSubresources) const D3D12_PLACED_SUBRESOURCE_FOOTPRINT* pLayouts,
	_In_reads_(NumSubresources) const UINT* pNumRows,
	_In_reads_(NumSubresources) const UINT64* pRowSizesInBytes,
	_In_reads_(NumSubresources) const D3D12_SUBRESOURCE_DATA* pSrcData)
{
	// Minor validation
	D3D12_RESOURCE_DESC IntermediateDesc = pIntermediate->GetDesc();
	D3D12_RESOURCE_DESC DestinationDesc = pDestinationResource->GetDesc();
	if (IntermediateDesc.Dimension != D3D12_RESOURCE_DIMENSION_BUFFER ||
		IntermediateDesc.Width < RequiredSize + pLayouts[0].Offset ||
		RequiredSize >(SIZE_T) - 1 ||
		(DestinationDesc.Dimension == D3D12_RESOURCE_DIMENSION_BUFFER &&
			(FirstSubresource != 0 || NumSubresources != 1)))
	{
		return 0;
	}

	BYTE* pData;
	HRESULT hr = pIntermediate->Map(0, NULL, reinterpret_cast<void**>(&pData));
	if (FAILED(hr))
	{
		return 0;
	}

	for (UINT i = 0; i < NumSubresources; ++i)
	{
		if (pRowSizesInBytes[i] >(SIZE_T)-1) return 0;
		D3D12_MEMCPY_DEST DestData = { pData + pLayouts[i].Offset, pLayouts[i].Footprint.RowPitch, pLayouts[i].Footprint.RowPitch * pNumRows[i] };
		MemcpySubresource(&DestData, &pSrcData[i], (SIZE_T)pRowSizesInBytes[i], pNumRows[i], pLayouts[i].Footprint.Depth);
	}
	pIntermediate->Unmap(0, NULL);

	if (DestinationDesc.Dimension == D3D12_RESOURCE_DIMENSION_BUFFER)
	{
		CD3DX12_BOX SrcBox(UINT(pLayouts[0].Offset), UINT(pLayouts[0].Offset + pLayouts[0].Footprint.Width));
		pCmdList->CopyBufferRegion(
			pDestinationResource, 0, pIntermediate, pLayouts[0].Offset, pLayouts[0].Footprint.Width);
	}
	else
	{
		for (UINT i = 0; i < NumSubresources; ++i)
		{
			CD3DX12_TEXTURE_COPY_LOCATION Dst(pDestinationResource, i + FirstSubresource);
			CD3DX12_TEXTURE_COPY_LOCATION Src(pIntermediate, pLayouts[i]);
			pCmdList->CopyTextureRegion(&Dst, 0, 0, 0, &Src, nullptr);
		}
	}
	return RequiredSize;
}

//------------------------------------------------------------------------------------------------
// Heap-allocating UpdateSubresources implementation
inline UINT64 UpdateSubresources(
	_In_ ID3D12GraphicsCommandList* pCmdList,
	_In_ ID3D12Resource* pDestinationResource,
	_In_ ID3D12Resource* pIntermediate,
	UINT64 IntermediateOffset,
	_In_range_(0, D3D12_REQ_SUBRESOURCES) UINT FirstSubresource,
	_In_range_(0, D3D12_REQ_SUBRESOURCES - FirstSubresource) UINT NumSubresources,
	_In_reads_(NumSubresources) D3D12_SUBRESOURCE_DATA* pSrcData)
{
	UINT64 RequiredSize = 0;
	UINT64 MemToAlloc = static_cast<UINT64>(sizeof(D3D12_PLACED_SUBRESOURCE_FOOTPRINT) + sizeof(UINT) + sizeof(UINT64)) * NumSubresources;
	if (MemToAlloc > SIZE_MAX)
	{
		return 0;
	}
	void* pMem = HeapAlloc(GetProcessHeap(), 0, static_cast<SIZE_T>(MemToAlloc));
	if (pMem == NULL)
	{
		return 0;
	}
	D3D12_PLACED_SUBRESOURCE_FOOTPRINT* pLayouts = reinterpret_cast<D3D12_PLACED_SUBRESOURCE_FOOTPRINT*>(pMem);
	UINT64* pRowSizesInBytes = reinterpret_cast<UINT64*>(pLayouts + NumSubresources);
	UINT* pNumRows = reinterpret_cast<UINT*>(pRowSizesInBytes + NumSubresources);

	D3D12_RESOURCE_DESC Desc = pDestinationResource->GetDesc();
	ID3D12Device* pDevice;
	pDestinationResource->GetDevice(__uuidof(*pDevice), reinterpret_cast<void**>(&pDevice));
	pDevice->GetCopyableFootprints(&Desc, FirstSubresource, NumSubresources, IntermediateOffset, pLayouts, pNumRows, pRowSizesInBytes, &RequiredSize);
	pDevice->Release();

	UINT64 Result = UpdateSubresources(pCmdList, pDestinationResource, pIntermediate, FirstSubresource, NumSubresources, RequiredSize, pLayouts, pNumRows, pRowSizesInBytes, pSrcData);
	HeapFree(GetProcessHeap(), 0, pMem);
	return Result;
}

//------------------------------------------------------------------------------------------------
// Stack-allocating UpdateSubresources implementation
template <UINT MaxSubresources>
inline UINT64 UpdateSubresources(
	_In_ ID3D12GraphicsCommandList* pCmdList,
	_In_ ID3D12Resource* pDestinationResource,
	_In_ ID3D12Resource* pIntermediate,
	UINT64 IntermediateOffset,
	_In_range_(0, MaxSubresources) UINT FirstSubresource,
	_In_range_(1, MaxSubresources - FirstSubresource) UINT NumSubresources,
	_In_reads_(NumSubresources) D3D12_SUBRESOURCE_DATA* pSrcData)
{
	UINT64 RequiredSize = 0;
	D3D12_PLACED_SUBRESOURCE_FOOTPRINT Layouts[MaxSubresources];
	UINT NumRows[MaxSubresources];
	UINT64 RowSizesInBytes[MaxSubresources];

	D3D12_RESOURCE_DESC Desc = pDestinationResource->GetDesc();
	ID3D12Device* pDevice;
	pDestinationResource->GetDevice(__uuidof(*pDevice), reinterpret_cast<void**>(&pDevice));
	pDevice->GetCopyableFootprints(&Desc, FirstSubresource, NumSubresources, IntermediateOffset, Layouts, NumRows, RowSizesInBytes, &RequiredSize);
	pDevice->Release();

	return UpdateSubresources(pCmdList, pDestinationResource, pIntermediate, FirstSubresource, NumSubresources, RequiredSize, Layouts, NumRows, RowSizesInBytes, pSrcData);
}

//------------------------------------------------------------------------------------------------
inline bool D3D12IsLayoutOpaque(D3D12_TEXTURE_LAYOUT Layout)
{
	return Layout == D3D12_TEXTURE_LAYOUT_UNKNOWN || Layout == D3D12_TEXTURE_LAYOUT_64KB_UNDEFINED_SWIZZLE;
}

//------------------------------------------------------------------------------------------------
inline ID3D12CommandList * const * CommandListCast(ID3D12GraphicsCommandList * const * pp)
{
	// This cast is useful for passing strongly typed command list pointers into
	// ExecuteCommandLists.
	// This cast is valid as long as the const-ness is respected. D3D12 APIs do
	// respect the const-ness of their arguments.
	return reinterpret_cast<ID3D12CommandList * const *>(pp);
}


#endif // defined( __cplusplus )

#endif //__D3DX12_H__