[DirectX12] 📂. Texture Mapping
🔷 Texture Mapping
🔹 DirectXTex 설정
#include <d3d12.h>전에#include "DirectXTex.h"필요 DirectXTex 시작 매뉴얼
0. UV 좌표 설정
- 사진 추가 예정
1. Texture Class
- 텍스쳐를 불러와 관리해주는 클래스
#pragma once
class Texture
{
public:
void Init(const wstring& path);
public:
void CreateTexture(const wstring& path);
void CreateView();
D3D12_CPU_DESCRIPTOR_HANDLE GetCpuHandle() { return _srvHandle; }
private:
ScratchImage _image; // 이미지 또는 이미지 집합을 반환하는 함수의 메모리를 관리하는 도우미 클래스
ComPtr<ID3D12Resource> _tex2D;
ComPtr<ID3D12DescriptorHeap> _srvHeap;
D3D12_CPU_DESCRIPTOR_HANDLE _srvHandle;
};
1) 이미지 파일을 불러온다
- C++17부터 지원하는
#include <filesystem>을 사용한다. - ⚠️ 충돌로 인해
#define _HAS_STD_BYTE 0필요!
wstring ext = std::filesystem::path(path).extension();
if (ext == L".dds" || ext == L".DDS")
::LoadFromDDSFile(path.c_str(), DDS_FLAGS_NONE, nullptr, _image);
else if (ext == L".tga" || ext == L".TGA")
::LoadFromTGAFile(path.c_str(), nullptr, _image);
else // png, jpg, jpeg, bmp
::LoadFromWICFile(path.c_str(), WIC_FLAGS_NONE, nullptr, _image);
ComPtr<ID3D12Device> device = MyEngine->GetDevice()->GetDevice();
HRESULT hr = ::CreateTexture(device.Get(), _image.GetMetadata(), &_tex2D);
assert(SUCCEEDED(hr));
vector<D3D12_SUBRESOURCE_DATA> subResources;
hr = ::PrepareUpload(
device.Get(),
_image.GetImages(),
_image.GetImageCount(),
_image.GetMetadata(),
subResources);
assert(SUCCEEDED(hr));
const uint64 bufferSize = ::GetRequiredIntermediateSize(_tex2D.Get(), 0, static_cast<uint32>(subResources.size()));
D3D12_HEAP_PROPERTIES heapProperty = CD3DX12_HEAP_PROPERTIES(D3D12_HEAP_TYPE_UPLOAD);
D3D12_RESOURCE_DESC desc = CD3DX12_RESOURCE_DESC::Buffer(bufferSize);
ComPtr<ID3D12Resource> textureUploadHeap;
hr = device->CreateCommittedResource(
&heapProperty,
D3D12_HEAP_FLAG_NONE,
&desc,
D3D12_RESOURCE_STATE_GENERIC_READ,
nullptr,
IID_PPV_ARGS(textureUploadHeap.GetAddressOf()));
assert(SUCCEEDED(hr));
//
ComPtr<ID3D12GraphicsCommandList> resCmdList = MyEngine->GetCommandQueue()->GetResourceCommandList();
::UpdateSubresources(
resCmdList.Get(),
_tex2D.Get(),
textureUploadHeap.Get(),
0, 0,
static_cast<unsigned int>(subResources.size()),
subResources.data());
MyEngine->GetCommandQueue()->FlushResourceCommandQueue();
2) 텍스처를 저장하는 Resource 생성
3) 텍스처 Resource를 설명하는 설명자 힙 생성 (SRV)
ComPtr<ID3D12Device> device = MyEngine->GetDevice()->GetDevice();
D3D12_DESCRIPTOR_HEAP_DESC heapDesc = {};
heapDesc.NumDescriptors = 1;
heapDesc.Type = D3D12_DESCRIPTOR_HEAP_TYPE_CBV_SRV_UAV;
heapDesc.Flags = D3D12_DESCRIPTOR_HEAP_FLAG_NONE;
device->CreateDescriptorHeap(&heapDesc, IID_PPV_ARGS(&_srvHeap));
_srvHandle = _srvHeap->GetCPUDescriptorHandleForHeapStart();
// STV
D3D12_SHADER_RESOURCE_VIEW_DESC viewDesc = {};
viewDesc.Format = _image.GetMetadata().format;
viewDesc.ViewDimension = D3D12_SRV_DIMENSION_TEXTURE2D;
viewDesc.Shader4ComponentMapping = D3D12_DEFAULT_SHADER_4_COMPONENT_MAPPING;
viewDesc.Texture2D.MipLevels = 1;
device->CreateShaderResourceView(_tex2D.Get(), &viewDesc, _srvHandle);
2. Mesh 클래스에서 Texture 설정
MyEngine->GetTableDescriptorHeap()->SetShaderResourceView(_tex->GetCpuHandle(), SRV_REGISTER::t0);
2. CommandQueue 설정 및 ResourceList 생성
ComPtr<ID3D12CommandAllocator> _resCmdAlloc;
ComPtr<ID3D12GraphicsCommandList> _resCmdList;
// Te
device->CreateCommandAllocator(D3D12_COMMAND_LIST_TYPE_DIRECT, IID_PPV_ARGS(&_resCmdAlloc));
device->CreateCommandList(0, D3D12_COMMAND_LIST_TYPE_DIRECT, _resCmdAlloc.Get(), nullptr, IID_PPV_ARGS(&_resCmdList));
void CommandQueue::FlushResourceCommandQueue()
{
_resCmdList->Close();
ID3D12CommandList* cmdListArr[] = { _resCmdList.Get() };
_cmdQueue->ExecuteCommandLists(_countof(cmdListArr), cmdListArr);
WaitSync();
_resCmdAlloc->Reset();
_resCmdList->Reset(_resCmdAlloc.Get(), nullptr);
}
2. Root Signature 변경 및 Descriptor Table 설정
CD3DX12_DESCRIPTOR_RANGE range[] =
{
CD3DX12_DESCRIPTOR_RANGE(D3D12_DESCRIPTOR_RANGE_TYPE_CBV, CBV_REGISTER_COUNT, 0),
CD3DX12_DESCRIPTOR_RANGE(D3D12_DESCRIPTOR_RANGE_TYPE_SRV, SRV_REGISTER_COUNT, 0),
};
...
_samplerDesc = CD3DX12_STATIC_SAMPLER_DESC(0);
D3D12_ROOT_SIGNATURE_DESC desc = CD3DX12_ROOT_SIGNATURE_DESC(_countof(param), param, 1, &_samplerDesc);
void TableDescriptorHeap::SetShaderResourceView(D3D12_CPU_DESCRIPTOR_HANDLE srcHandle, SRV_REGISTER reg)
{
D3D12_CPU_DESCRIPTOR_HANDLE destHandle = GetCpuHandle(reg);
uint32 destRange = 1;
uint32 srcRange = 1;
MyEngine->GetDevice()->GetDevice()->CopyDescriptors(1, &destHandle, &destRange, 1, &srcHandle, &srcRange, D3D12_DESCRIPTOR_HEAP_TYPE_CBV_SRV_UAV);
}
3. HLSL 변경 및 Shader 정보 추가
...
// Texture를 전달받을 수 있는 레지스터 설정
Texture2D tex_0 : register(t0);
SamplerState sam_0 : register(s0);
// uv좌표 추가
struct VS_IN
{
...
float2 uv : TEXCOORD;
};
struct VS_OUT
{
...
float2 uv : TEXCOORD;
};
VS_OUT VS_Main(VS_IN input)
{
VS_OUT output = (VS_OUT)0;
output.pos = float4(input.pos, 1.f);
output.color = input.color;
output.uv = input.uv;
return output;
}
float4 PS_Main(VS_OUT input) : SV_Target
{
float4 color = tex_0.Sample(sam_0, input.uv);
return color;
}
D3D12_INPUT_ELEMENT_DESC desc[] =
{
...
{ "TEXCOORD", 0, DXGI_FORMAT_R32G32_FLOAT, 0, 28, D3D12_INPUT_CLASSIFICATION_PER_VERTEX_DATA, 0 },
};
🔹 결과
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