1.啟用dx12有什么用

我們可以通過常量緩存把數(shù)據(jù)傳遞給著色器，這篇文章咱們就使用常量緩存?zhèn)鬟f一個位置的偏移給著色器，讓我們的四邊形動起來常量緩存常量緩存區(qū)結(jié)構(gòu)體首先定義咱們需要傳遞給著色器的結(jié)構(gòu)體，這個結(jié)構(gòu)體大小必須是256字節(jié)對齊。

2.開啟dx12會提升幀數(shù)嗎

structSceneConstantBuffer{XMFLOAT4offset;};添加一個256字節(jié)對齊的方法康德樂大藥房官網(wǎng)買藥templateconstexprUINTCalcConstantBufferByteSize

3.怎么開啟dx12模式

(){// Constant buffers must be a multiple of the minimum hardware // allocation size (usually 256 bytes). So round up to nearest

4.如何開啟dx12u

// multiple of 256. We do this by adding 255 and then masking off // the lower 2 bytes康德樂大藥房官網(wǎng)買藥 which store all bits < 256.

5.開啟dx12

// Example: Suppose byteSize = 300. // (300 + 255) & ~255 // 555 & ~255 // 0x022B & ~0x00ff // 0x022B & 0xff00

6.dx12開啟有什么用

// 0x0200 // 512 UINTbyteSize=sizeof(T);return(byteSize+255)&~255;}常量緩存堆創(chuàng)建常量緩存堆和其他的堆差不多D3D12_D康德樂大藥房官網(wǎng)買藥ESCRIPTOR_HEAP_DESC。

7.打開dx12

cbvHeapDesc={};cbvHeapDesc.NumDescriptors=1;cbvHeapDesc.Type=D3D12_DESCRIPTOR_HEAP_TYPE_CBV_SRV_UAV;cbvHeapDesc

8.怎么啟用dx12

.Flags=D3D12_DESCRIPTOR_HEAP_FLAG_SHADER_VISIBLE;ThrowIfFailed(device->CreateDescriptorHeap(&cbvHeapDesc

9.游戲開啟dx12

,IID_PPV_ARGS(&cbvHeap)));常量緩存constUI康德樂大藥房官網(wǎng)買藥NTconstantBufferSize=CalcConstantBufferByteSize

10.如何打開dx12

>();CD3DX12_RESOURCE_DESCconstantResourceDes=CD3DX12_RESOURCE_DESC::Buffer(constantBufferSize);ThrowIfFailed

(device->CreateCommittedResource(&heapProperties,D3D12_HEAP_FLAG_NONE,&constantResourceDes,D3D12_RESOURCE_STATE_GENERIC_READ

,nullptr,I康德樂大藥房官網(wǎng)買藥ID_PPV_ARGS(&constantBuffer)));D3D12_CONSTANT_BUFFER_VIEW_DESCcbvDesc={};cbvDesc.BufferLocation

=constantBuffer->GetGPUVirtualAddress();cbvDesc.SizeInBytes=constantBufferSize;device->CreateConstantBufferView

(&cbvDesc,cbvHeap->GetCPUDescriptorHandleForHeapStart());ThrowIfFailed(constantBuffer->Map(0,&康德樂大藥房官網(wǎng)買藥readRange

,reinterpret_cast(&pCbvDataBegin)));memcpy(pCbvDataBegin,&constantBufferData,sizeof(constantBufferData

));根簽名根簽名由根參數(shù)組成，根參數(shù)可以是根常量、根描述符和描述符表，在這里創(chuàng)建一個描述符表，存放了咱們的常量緩存視圖D3D12_FEATURE_DATA_ROOT_SIGNATUREfeatureData。

={};featureData.HighestVersion=D3D_ROOT_SIGNATURE_VERSION_1_1;if(FAILED(device->Chec康德樂大藥房官網(wǎng)買藥kFeatureSupport(D3D12_FEATURE_ROOT_SIGNATURE

,&featureData,sizeof(featureData)))){featureData.HighestVersion=D3D_ROOT_SIGNATURE_VERSION_1_0;}CD3DX12_DESCRIPTOR_RANGE1

ranges[1];CD3DX12_ROOT_PARAMETER1rootParameters[1];ranges[0].Init(D3D12_DESCRIPTOR_RANGE_TYPE_CBV,1,0

,0,D3D12_DESCRIPTOR_RANGE_FLAG_DAT康德樂大藥房官網(wǎng)買藥A_STATIC);rootParameters[0].InitAsDescriptorTable(1,&ranges[0],D3D12_SHADER_VISIBILITY_VERTEX

);D3D12_ROOT_SIGNATURE_FLAGSrootSignatureFlags=D3D12_ROOT_SIGNATURE_FLAG_ALLOW_INPUT_ASSEMBLER_INPUT_LAYOUT

|D3D12_ROOT_SIGNATURE_FLAG_DENY_HULL_SHADER_ROOT_ACCESS|D3D12_ROOT_SIGNATURE_FLAG_DENY_DOMAIN_SHADER康德樂大藥房官網(wǎng)買藥_ROOT_ACCESS

|D3D12_ROOT_SIGNATURE_FLAG_DENY_GEOMETRY_SHADER_ROOT_ACCESS|D3D12_ROOT_SIGNATURE_FLAG_DENY_PIXEL_SHADER_ROOT_ACCESS

;CD3DX12_VERSIONED_ROOT_SIGNATURE_DESCrootSignatureDesc;rootSignatureDesc.Init_1_1(_countof(rootParameters

),rootParameters,0,nullptr,rootSignatureFlags);ComPtrsignature;ComP康德樂大藥房官網(wǎng)買藥trerror;ThrowIfFailed

(D3DX12SerializeVersionedRootSignature(&rootSignatureDesc,featureData.HighestVersion,&signature,&error

));ThrowIfFailed(device->CreateRootSignature(0,signature->GetBufferPointer(),signature->GetBufferSize

(),IID_PPV_ARGS(&rootSignature)));命令列表咱們還需要添加一些代碼去設(shè)置咱們的常量緩存堆ID3D12Descriptor康德樂大藥房官網(wǎng)買藥Heap*ppHeaps[]={cbvHeap.Get

()};commandList->SetDescriptorHeaps(_countof(ppHeaps),ppHeaps);commandList->SetGraphicsRootDescriptorTable

(0,cbvHeap->GetGPUDescriptorHandleForHeapStart());OnUpdate方法咱們在OnUpdate方法里面對常量緩存里面的數(shù)據(jù)進(jìn)行更新constfloattranslationSpeed

=0.005f;constfloatoffsetBounds=1.25f;constantBufferD康德樂大藥房官網(wǎng)買藥ata.offset.x+=translationSpeed;if(constantBufferData

.offset.x>offsetBounds){constantBufferData.offset.x=-offsetBounds;}memcpy(pCbvDataBegin,&constantBufferData

,sizeof(constantBufferData));shaders.hlsl在著色器代碼里面添加相應(yīng)的結(jié)構(gòu)體，拿來接收咱們傳遞過來的數(shù)據(jù)，如何加到咱們的頂點(diǎn)位置上面去，這樣咱們的四邊形就能動起來了。

cbufferSceneConstantBuffer:register(b0)康德樂大藥房官網(wǎng)買藥{float4offset;}structPSInput{float4position:SV_POSITION;float4

color:COLOR;};PSInputVSMain(float4position:POSITION,float4color:COLOR){PSInputresult;result.position=

position+offset;result.color=color;returnresult;}float4PSMain(PSInputinput):SV_TARGET{returninput.color

;}完整代碼#include#include#include#inc康德樂大藥房官網(wǎng)買藥lude#include#include

#include#include"../DXUtils/d3dx12.h"#pragma comment(lib, "d3d12.lib") #pragma comment(lib, "dxgi.lib")

#pragma comment(lib, "d3dcompiler.lib") usingnamespaceMicrosoft::WRL;usingnamespaceDirectX;structVertex

{XMFLOAT3position;XMFLOAT4color;};structSceneConstantBuffe康德樂大藥房官網(wǎng)買藥r{XMFLOAT4offset;};constUINTFrameCount=2;UINT

width=800;UINTheight=600;HWNDhwnd;//管線對象 CD3DX12_VIEWPORTviewport(0.0f,0.0f,width,height);CD3DX12_RECT

scissorRect(0,0,width,height);ComPtrswapChain;ComPtrdevice;ComPtr

>renderTargets[FrameCount];ComPtrcommandAllocator;ComPtrcommandQueue

;ComPtrrootS康德樂大藥房官網(wǎng)買藥ignature;ComPtrrtvHeap;ComPtr

>dsvHeap;ComPtrcbvHeap;ComPtrpipelineState;ComPtr

>commandList;UINTrtvDescriptorSize;ComPtrvertexBuffer;D3D12_VERTEX_BUFFER_VIEWvertexBufferView

;ComPtrindexBuffer;D3D12_INDEX_BUFFER_VIEWindexBufferView;ComPtrdepthStencilBuffer

;ComPtrconstantBuffer;SceneConstantBufferconst康德樂大藥房官網(wǎng)買藥antBufferData;UINT8*pCbvDataBegin;// 同步對象

UINTframeIndex;HANDLEfenceEvent;ComPtrfence;UINT64fenceValue;floatcolor[3];boolisRAdd=true

;boolisGAdd=true;boolisBAdd=true;templateconstexprUINTCalcConstantBufferByteSize(){// Constant buffers must be a multiple of the minimum hardware

// allocation size (usua康德樂大藥房官網(wǎng)買藥lly 256 bytes). So round up to nearest // multiple of 256. We do this by adding 255 and then masking off

// the lower 2 bytes which store all bits < 256. // Example: Suppose byteSize = 300. // (300 + 255) & ~255

// 555 & ~255 // 0x022B & ~0x00ff // 0x022B & 0xff康德樂大藥房官網(wǎng)買藥00 // 0x0200 // 512 UINTbyteSize=sizeof(T);return(byteSize

+255)&~255;}std::stringHrToString(HRESULThr){chars_str[64]={};sprintf_s(s_str,"HRESULT of 0x%08X",static_cast

(hr));returnstd::string(s_str);}classHrException:publicstd::runtime_error{public:HrException(HRESULT

hr):std::康德樂大藥房官網(wǎng)買藥runtime_error(HrToString(hr)),m_hr(hr){}HRESULTError()const{returnm_hr;}private:constHRESULT

m_hr;};voidThrowIfFailed(HRESULThr){if(FAILED(hr)){throwHrException(hr);}}IDXGIAdapter1*GetSupportedAdapter

(ComPtr&dxgiFactory,constD3D_FEATURE_LEVELfeatureLevel){IDXGIAdapter1*adapter=nullptr;

for(std::uint32康德樂大藥房官網(wǎng)買藥_tadapterIndex=0U;;++adapterIndex){IDXGIAdapter1*currentAdapter=nullptr;if(DXGI_ERROR_NOT_FOUND

==dxgiFactory->EnumAdapters1(adapterIndex,¤tAdapter)){break;}constHRESULThres=D3D12CreateDevice

(currentAdapter,featureLevel,_uuidof(ID3D12Device),nullptr);if(SUCCEEDED(hres)){adapter=currentAdapter

;break;}康德樂大藥房官網(wǎng)買藥currentAdapter->Release();}returnadapter;}voidLoadPipeline(){#if defined(_DEBUG) {ComPtr

>debugController;if(SUCCEEDED(D3D12GetDebugInterface(IID_PPV_ARGS(&debugController)))){debugController

->EnableDebugLayer();}}#endif ComPtrmDxgiFactory;ThrowIfFailed(CreateDXGIFactory1(IID_PPV_ARGS

(mDxgiFactory.G康德樂大藥房官網(wǎng)買藥etAddressOf())));D3D_FEATURE_LEVELfeatureLevels[]={D3D_FEATURE_LEVEL_12_1,D3D_FEATURE_LEVEL_12_0

,D3D_FEATURE_LEVEL_11_1,D3D_FEATURE_LEVEL_11_0,};IDXGIAdapter1*adapter=nullptr;for(std::uint32_ti=0U;

i<_countof(featureLevels);++i){adapter=GetSupportedAdapter(mDxgiFactory,featureLevels[i]);if(adapter!=

n康德樂大藥房官網(wǎng)買藥ullptr){break;}}if(adapter!=nullptr){D3D12CreateDevice(adapter,D3D_FEATURE_LEVEL_12_1,IID_PPV_ARGS(device

.GetAddressOf()));}D3D12_COMMAND_QUEUE_DESCqueueDesc={};queueDesc.Flags=D3D12_COMMAND_QUEUE_FLAG_NONE

;queueDesc.Type=D3D12_COMMAND_LIST_TYPE_DIRECT;ThrowIfFailed(device->CreateCommandQueue(&queue康德樂大藥房官網(wǎng)買藥Desc,IID_PPV_ARGS

(&commandQueue)));DXGI_SWAP_CHAIN_DESC1swapChainDesc={};swapChainDesc.BufferCount=FrameCount;swapChainDesc

.Width=width;swapChainDesc.Height=height;swapChainDesc.Format=DXGI_FORMAT_R8G8B8A8_UNORM;swapChainDesc

.BufferUsage=DXGI_USAGE_RENDER_TARGET_OUTPUT;swapChainDesc.SwapEffect=DXGI_康德樂大藥房官網(wǎng)買藥SWAP_EFFECT_FLIP_DISCARD;swapChainDesc

.SampleDesc.Count=1;ComPtrswapChain1;ThrowIfFailed(mDxgiFactory->CreateSwapChainForHwnd

(commandQueue.Get(),hwnd,&swapChainDesc,nullptr,nullptr,&swapChain1));ThrowIfFailed(swapChain1.As(&swapChain

));frameIndex=swapChain->GetCurrentBackBufferIndex();{D3D12_DESCRIP康德樂大藥房官網(wǎng)買藥TOR_HEAP_DESCrtvHeapDesc={};rtvHeapDesc

.NumDescriptors=FrameCount;rtvHeapDesc.Type=D3D12_DESCRIPTOR_HEAP_TYPE_RTV;rtvHeapDesc.Flags=D3D12_DESCRIPTOR_HEAP_FLAG_NONE

;ThrowIfFailed(device->CreateDescriptorHeap(&rtvHeapDesc,IID_PPV_ARGS(&rtvHeap)));rtvDescriptorSize=device

->GetDescriptorHandleIncrementS康德樂大藥房官網(wǎng)買藥ize(D3D12_DESCRIPTOR_HEAP_TYPE_RTV);// D3D12_DESCRIPTOR_HEAP_DESCdsvHeapDesc

={};dsvHeapDesc.NumDescriptors=1;dsvHeapDesc.Type=D3D12_DESCRIPTOR_HEAP_TYPE_DSV;dsvHeapDesc.Flags=D3D12_DESCRIPTOR_HEAP_FLAG_NONE

;ThrowIfFailed(device->CreateDescriptorHeap(&dsvHeapDesc,IID_PPV_ARGS(&dsvHeap)));// D3D12_DES康德樂大藥房官網(wǎng)買藥CRIPTOR_HEAP_DESC

cbvHeapDesc={};cbvHeapDesc.NumDescriptors=1;cbvHeapDesc.Type=D3D12_DESCRIPTOR_HEAP_TYPE_CBV_SRV_UAV;cbvHeapDesc

.Flags=D3D12_DESCRIPTOR_HEAP_FLAG_SHADER_VISIBLE;ThrowIfFailed(device->CreateDescriptorHeap(&cbvHeapDesc

,IID_PPV_ARGS(&cbvHeap)));}CD3DX12_CPU_DESCRIPTOR_HANDLErtvHandle(rt康德樂大藥房官網(wǎng)買藥vHeap->GetCPUDescriptorHandleForHeapStart

());for(UINTn=0;nGetBuffer(n,IID_PPV_ARGS(&renderTargets[n])));

device->CreateRenderTargetView(renderTargets[n].Get(),nullptr,rtvHandle);rtvHandle.Offset(1,rtvDescriptorSize

);}ThrowIfFailed(device->CreateCommandAllocator(D3D12_COMMAND_LIST_TYPE_DIRECT,IID_PPV_康德樂大藥房官網(wǎng)買藥ARGS(&commandAllocator

)));}voidLoadAsset(){{D3D12_FEATURE_DATA_ROOT_SIGNATUREfeatureData={};featureData.HighestVersion=D3D_ROOT_SIGNATURE_VERSION_1_1

;if(FAILED(device->CheckFeatureSupport(D3D12_FEATURE_ROOT_SIGNATURE,&featureData,sizeof(featureData))))

{featureData.HighestVersion=D3D_ROOT_SIGNATURE_V康德樂大藥房官網(wǎng)買藥ERSION_1_0;}CD3DX12_DESCRIPTOR_RANGE1ranges[1];CD3DX12_ROOT_PARAMETER1

rootParameters[1];ranges[0].Init(D3D12_DESCRIPTOR_RANGE_TYPE_CBV,1,0,0,D3D12_DESCRIPTOR_RANGE_FLAG_DATA_STATIC

);rootParameters[0].InitAsDescriptorTable(1,&ranges[0],D3D12_SHADER_VISIBILITY_VERTEX);D3D12_ROOT_SIGNATURE_FLAGS

rootSig康德樂大藥房官網(wǎng)買藥natureFlags=D3D12_ROOT_SIGNATURE_FLAG_ALLOW_INPUT_ASSEMBLER_INPUT_LAYOUT|D3D12_ROOT_SIGNATURE_FLAG_DENY_HULL_SHADER_ROOT_ACCESS

|D3D12_ROOT_SIGNATURE_FLAG_DENY_DOMAIN_SHADER_ROOT_ACCESS|D3D12_ROOT_SIGNATURE_FLAG_DENY_GEOMETRY_SHADER_ROOT_ACCESS

|D3D12_ROOT_SIGNATURE_FLAG_DENY_PIXEL_SHADER_ROOT_ACCESS;康德樂大藥房官網(wǎng)買藥CD3DX12_VERSIONED_ROOT_SIGNATURE_DESCrootSignatureDesc

;rootSignatureDesc.Init_1_1(_countof(rootParameters),rootParameters,0,nullptr,rootSignatureFlags);ComPtr

signature;ComPtrerror;ThrowIfFailed(D3DX12SerializeVersionedRootSignature(&rootSignatureDesc

,featureData.HighestVersion,&signature,&error));Th康德樂大藥房官網(wǎng)買藥rowIfFailed(device->CreateRootSignature(0,signature

->GetBufferPointer(),signature->GetBufferSize(),IID_PPV_ARGS(&rootSignature)));}{ComPtrvertexShader

;ComPtrpixelShader;#if defined(_DEBUG) UINTcompileFlags=D3DCOMPILE_DEBUG|D3DCOMPILE_SKIP_OPTIMIZATION

;#else UINTcompileFlags=0;#endif ThrowIfFailed(D3康德樂大藥房官網(wǎng)買藥DCompileFromFile(std::wstring(L"Assets/shaders.hlsl"

).c_str(),nullptr,nullptr,"VSMain","vs_5_0",compileFlags,0,&vertexShader,nullptr));ThrowIfFailed(D3DCompileFromFile

(std::wstring(L"Assets/shaders.hlsl").c_str(),nullptr,nullptr,"PSMain","ps_5_0",compileFlags,0,&pixelShader

,nullptr));D3D12_INPUT_ELE康德樂大藥房官網(wǎng)買藥MENT_DESCinputElementDescs[]={{"POSITION",0,DXGI_FORMAT_R32G32B32_FLOAT,0,0

,D3D12_INPUT_CLASSIFICATION_PER_VERTEX_DATA,0},{"COLOR",0,DXGI_FORMAT_R32G32B32A32_FLOAT,0,12,D3D12_INPUT_CLASSIFICATION_PER_VERTEX_DATA

,0}};D3D12_GRAPHICS_PIPELINE_STATE_DESCpsoDesc={};psoDesc.InputLayout={inputElementDescs,康德樂大藥房官網(wǎng)買藥_countof(inputElementDescs

)};psoDesc.pRootSignature=rootSignature.Get();psoDesc.VS=CD3DX12_SHADER_BYTECODE(vertexShader.Get());

psoDesc.PS=CD3DX12_SHADER_BYTECODE(pixelShader.Get());psoDesc.RasterizerState=CD3DX12_RASTERIZER_DESC

(D3D12_DEFAULT);psoDesc.BlendState=CD3DX12_BLEND_DESC(D3D12_DEFAULT);pso康德樂大藥房官網(wǎng)買藥Desc.DepthStencilState=CD3DX12_DEPTH_STENCIL_DESC

(D3D12_DEFAULT);psoDesc.SampleMask=UINT_MAX;psoDesc.PrimitiveTopologyType=D3D12_PRIMITIVE_TOPOLOGY_TYPE_TRIANGLE

;psoDesc.NumRenderTargets=1;psoDesc.RTVFormats[0]=DXGI_FORMAT_R8G8B8A8_UNORM;psoDesc.SampleDesc.Count

=1;ThrowIfFailed(device->CreateGraphic康德樂大藥房官網(wǎng)買藥sPipelineState(&psoDesc,IID_PPV_ARGS(&pipelineState)));}ThrowIfFailed

(device->CreateCommandList(0,D3D12_COMMAND_LIST_TYPE_DIRECT,commandAllocator.Get(),pipelineState.Get(),

IID_PPV_ARGS(&commandList)));ThrowIfFailed(commandList->Close());{VertextriangleVertices[]={{{-0.5f,0.5f

,0.5f},{0.0f,1.0f,0.0f,1康德樂大藥房官網(wǎng)買藥.0f}},{{0.5f,-0.5f,0.5f},{0.0f,1.0f,0.0f,1.0f}},{{-0.5f,-0.5f,0.5f},{0.0f,1.0f

,0.0f,1.0f}},{{0.5f,0.5f,0.5f},{0.0f,1.0f,0.0f,1.0f}},{{-0.75f,0.75f,0.7f},{0.0f,0.0f,1.0f,1.0f}},{{0.0f

,0.0f,0.7f},{0.0f,0.0f,1.0f,1.0f}},{{-0.75f,0.0f,0.7f},{0.0f,0.0f,1.0f,1.0f}},{{0.0f,0.75f,0.7f},{0.0f

,0.0f,1.0f,1.0f}康德樂大藥房官網(wǎng)買藥}};DWORDtriangleIndexs[]{0,1,2,0,3,1};constUINTvertexBufferSize=sizeof(triangleVertices

);constUINTindexBufferSize=sizeof(triangleIndexs);CD3DX12_HEAP_PROPERTIESheapProperties=CD3DX12_HEAP_PROPERTIES

(D3D12_HEAP_TYPE_UPLOAD);CD3DX12_RESOURCE_DESCvertexResourceDes=CD3DX12_RESOURCE_DESC::Buffer(vertexBu康德樂大藥房官網(wǎng)買藥fferSize

);CD3DX12_RESOURCE_DESCindexResourceDes=CD3DX12_RESOURCE_DESC::Buffer(indexBufferSize);ThrowIfFailed(

device->CreateCommittedResource(&heapProperties,D3D12_HEAP_FLAG_NONE,&vertexResourceDes,D3D12_RESOURCE_STATE_GENERIC_READ

,nullptr,IID_PPV_ARGS(&vertexBuffer)));ThrowIfFailed(device->CreateCom康德樂大藥房官網(wǎng)買藥mittedResource(&heapProperties,

D3D12_HEAP_FLAG_NONE,&indexResourceDes,D3D12_RESOURCE_STATE_GENERIC_READ,nullptr,IID_PPV_ARGS(&indexBuffer

)));UINT8*pDataBegin;CD3DX12_RANGEreadRange(0,0);ThrowIfFailed(vertexBuffer->Map(0,&readRange,reinterpret_cast

(&pDataBegin)));memcpy(pDataBegin,triangleVertices,si康德樂大藥房官網(wǎng)買藥zeof(triangleVertices));vertexBuffer->Unmap

(0,nullptr);ThrowIfFailed(indexBuffer->Map(0,&readRange,reinterpret_cast(&pDataBegin)));memcpy

(pDataBegin,triangleIndexs,sizeof(triangleIndexs));indexBuffer->Unmap(0,nullptr);vertexBufferView.BufferLocation

=vertexBuffer->GetGPUVirtualAddress();vertexBufferV康德樂大藥房官網(wǎng)買藥iew.StrideInBytes=sizeof(Vertex);vertexBufferView.

SizeInBytes=vertexBufferSize;indexBufferView.BufferLocation=indexBuffer->GetGPUVirtualAddress();indexBufferView

.Format=DXGI_FORMAT_R32_UINT;indexBufferView.SizeInBytes=indexBufferSize;D3D12_DEPTH_STENCIL_VIEW_DESC

depthStencilDesc={};depthStencilDesc.康德樂大藥房官網(wǎng)買藥Format=DXGI_FORMAT_D32_FLOAT;depthStencilDesc.ViewDimension=D3D12_DSV_DIMENSION_TEXTURE2D

;depthStencilDesc.Flags=D3D12_DSV_FLAG_NONE;D3D12_CLEAR_VALUEdepthOptimizedClearValue={};depthOptimizedClearValue

.Format=DXGI_FORMAT_D32_FLOAT;depthOptimizedClearValue.DepthStencil.Depth=1.0f;depthOptimizedClear康德樂大藥房官網(wǎng)買藥Value

.DepthStencil.Stencil=0;CD3DX12_HEAP_PROPERTIESheapProperties2=CD3DX12_HEAP_PROPERTIES(D3D12_HEAP_TYPE_DEFAULT

);CD3DX12_RESOURCE_DESCtex2D=CD3DX12_RESOURCE_DESC::Tex2D(DXGI_FORMAT_D32_FLOAT,width,height,1,0,1,0,

D3D12_RESOURCE_FLAG_ALLOW_DEPTH_STENCIL);ThrowIfFailed(device->CreateCommittedResour康德樂大藥房官網(wǎng)買藥ce(&heapProperties2

,D3D12_HEAP_FLAG_NONE,&tex2D,D3D12_RESOURCE_STATE_DEPTH_WRITE,&depthOptimizedClearValue,IID_PPV_ARGS(

&depthStencilBuffer)));device->CreateDepthStencilView(depthStencilBuffer.Get(),&depthStencilDesc,dsvHeap

->GetCPUDescriptorHandleForHeapStart());constUINTconstantBufferSize=CalcCons康德樂大藥房官網(wǎng)買藥tantBufferByteSize

>();CD3DX12_RESOURCE_DESCconstantResourceDes=CD3DX12_RESOURCE_DESC::Buffer(constantBufferSize);ThrowIfFailed

(device->CreateCommittedResource(&heapProperties,D3D12_HEAP_FLAG_NONE,&constantResourceDes,D3D12_RESOURCE_STATE_GENERIC_READ

,nullptr,IID_PPV_ARGS(&constantBuffer)));D3D12_CON康德樂大藥房官網(wǎng)買藥STANT_BUFFER_VIEW_DESCcbvDesc={};cbvDesc.BufferLocation

=constantBuffer->GetGPUVirtualAddress();cbvDesc.SizeInBytes=constantBufferSize;device->CreateConstantBufferView

(&cbvDesc,cbvHeap->GetCPUDescriptorHandleForHeapStart());ThrowIfFailed(constantBuffer->Map(0,&readRange

,reinterpret_cast(&pCbvDataBegi康德樂大藥房官網(wǎng)買藥n)));memcpy(pCbvDataBegin,&constantBufferData,sizeof(constantBufferData

));}{ThrowIfFailed(device->CreateFence(0,D3D12_FENCE_FLAG_NONE,IID_PPV_ARGS(&fence)));fenceValue=1;fenceEvent

=CreateEvent(nullptr,FALSE,FALSE,nullptr);if(fenceEvent==nullptr){ThrowIfFailed(HRESULT_FROM_WIN32(GetLastError

()));}}}v康德樂大藥房官網(wǎng)買藥oidPopulateCommandList(){ThrowIfFailed(commandAllocator->Reset());ThrowIfFailed(commandList->

Reset(commandAllocator.Get(),pipelineState.Get()));commandList->SetGraphicsRootSignature(rootSignature

.Get());ID3D12DescriptorHeap*ppHeaps[]={cbvHeap.Get()};commandList->SetDescriptorHeaps(_countof(ppHeaps

),康德樂大藥房官網(wǎng)買藥ppHeaps);commandList->SetGraphicsRootDescriptorTable(0,cbvHeap->GetGPUDescriptorHandleForHeapStart());

commandList->RSSetViewports(1,&viewport);commandList->RSSetScissorRects(1,&scissorRect);D3D12_RESOURCE_BARRIER

resBarrier=CD3DX12_RESOURCE_BARRIER::Transition(renderTargets[frameIndex].Get(),D3D12_RE康德樂大藥房官網(wǎng)買藥SOURCE_STATE_PRESENT

,D3D12_RESOURCE_STATE_RENDER_TARGET);commandList->ResourceBarrier(1,&resBarrier);CD3DX12_CPU_DESCRIPTOR_HANDLE

rtvHandle(rtvHeap->GetCPUDescriptorHandleForHeapStart(),frameIndex,rtvDescriptorSize);CD3DX12_CPU_DESCRIPTOR_HANDLE

dsvHandle(dsvHeap->GetCPUDescriptorHandleForHeapStart()康德樂大藥房官網(wǎng)買藥);commandList->OMSetRenderTargets(1,&rtvHandle

,FALSE,&dsvHandle);constfloatclearColor[]={color[0],color[1],color[2],1.0f};commandList->ClearRenderTargetView

(rtvHandle,clearColor,0,nullptr);commandList->ClearDepthStencilView(dsvHeap->GetCPUDescriptorHandleForHeapStart

(),D3D12_CLEAR_FLAG_DEPTH,1.0f,0,康德樂大藥房官網(wǎng)買藥0,nullptr);commandList->IASetPrimitiveTopology(D3D_PRIMITIVE_TOPOLOGY_TRIANGLELIST

);commandList->IASetVertexBuffers(0,1,&vertexBufferView);commandList->IASetIndexBuffer(&indexBufferView

);commandList->DrawIndexedInstanced(6,1,0,0,0);commandList->DrawIndexedInstanced(6,1,0,4,0);resBarrier

=CD3DX12_RESO康德樂大藥房官網(wǎng)買藥URCE_BARRIER::Transition(renderTargets[frameIndex].Get(),D3D12_RESOURCE_STATE_RENDER_TARGET

,D3D12_RESOURCE_STATE_PRESENT);commandList->ResourceBarrier(1,&resBarrier);ThrowIfFailed(commandList->

Close());}voidWaitForPreviousFrame(){constUINT64tempFenceValue=fenceValue;ThrowIfFailed(commandQueue->

Signa康德樂大藥房官網(wǎng)買藥l(fence.Get(),tempFenceValue));fenceValue++;if(fence->GetCompletedValue()

(fence->SetEventOnCompletion(tempFenceValue,fenceEvent));WaitForSingleObject(fenceEvent,INFINITE);}frameIndex

=swapChain->GetCurrentBackBufferIndex();}voidOnUpdate(){if(color[0]<=1.0f&&isRAdd){color[0]+=0.001f;isRAdd

=true;}else{康德樂大藥房官網(wǎng)買藥color[0]-=0.002f;color[0]<=0?isRAdd=true:isRAdd=false;}if(color[1]<=1.0f&&isGAdd){color[1

]+=0.002f;isGAdd=true;}else{color[1]-=0.001f;color[1]<=0?isGAdd=true:isGAdd=false;}if(color[2]<=1.0f&&

isBAdd){color[2]+=0.001f;isBAdd=true;}else{color[2]-=0.001f;color[2]<=0?isBAdd=true:isBAdd=false;}const

floatt康德樂大藥房官網(wǎng)買藥ranslationSpeed=0.005f;constfloatoffsetBounds=1.25f;constantBufferData.offset.x+=translationSpeed

;if(constantBufferData.offset.x>offsetBounds){constantBufferData.offset.x=-offsetBounds;}memcpy(pCbvDataBegin

,&constantBufferData,sizeof(constantBufferData));}voidOnRender(){PopulateCommandList();ID3D12C康德樂大藥房官網(wǎng)買藥ommandList

*ppCommandLists[]={commandList.Get()};commandQueue->ExecuteCommandLists(_countof(ppCommandLists),ppCommandLists

);ThrowIfFailed(swapChain->Present(1,0));WaitForPreviousFrame();}voidOnDestroy(){WaitForPreviousFrame

();CloseHandle(fenceEvent);}LRESULTCALLBACKWindowProc(HWNDhWnd,UINTmessage,WPA康德樂大藥房官網(wǎng)買藥RAMwParam,LPARAMlParam)

{switch(message){caseWM_PAINT:OnUpdate();OnRender();return0;caseWM_DESTROY:PostQuitMessage(0);return0

;}returnDefWindowProc(hWnd,message,wParam,lParam);}intCALLBACKWinMain(_In_HINSTANCEhInstance,_In_opt_

HINSTANCEhPrevInstance,_In_LPSTRlpCmdLine,_In_intnShowCmd){WNDCLASSEXwindow康德樂大藥房官網(wǎng)買藥Class={0};windowClass.cbSize

=sizeof(WNDCLASSEX);windowClass.style=CS_HREDRAW|CS_VREDRAW;windowClass.lpfnWndProc=WindowProc;windowClass

.hInstance=hInstance;windowClass.hCursor=LoadCursor(NULL,IDC_ARROW);windowClass.lpszClassName=L"YSHRenderClass"

;RegisterClassEx(&windowClass);hwnd=CreateWindow(window康德樂大藥房官網(wǎng)買藥Class.lpszClassName,L"YSHRender",WS_OVERLAPPEDWINDOW

,CW_USEDEFAULT,CW_USEDEFAULT,width,height,nullptr,nullptr,hInstance,nullptr);LoadPipeline();LoadAsset

();ShowWindow(hwnd,SW_SHOW);MSGmsg={};while(msg.message!=WM_QUIT){if(PeekMessage(&msg,NULL,0,0,PM_REMOVE

)){TranslateMessage(&msg);DispatchMessage(&康德樂大藥房官網(wǎng)買藥msg);}}OnDestroy();return0;}運(yùn)行結(jié)果

00:00/ 00:00視頻信息鏡像畫面[X]DeviceId:web_88837357501626B3PlayerVersion:1.0.27

結(jié)尾哎，懶癌發(fā)作了，下次在寫了。下一篇