Intro :
Pour utiliser DirectX, il nous faut une classe D3D10Renderer afin d’initialiser le rendu graphique 3D.
Prérequis :
– Aucun
Explications :
Voici le code du fichier D3D10Renderer.h :
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#ifndef D3D10_RENDERER_H #define D3D10_RENDERER_H #include <windows.h> #include <d3dx10math.h> #include <DxErr.h> #include "Defines.h" #include "Singleton.h" #include "Types.h" #include "InputManager.h" #pragma comment(lib, "d3d10.lib") #pragma comment(lib, "d3dx10.lib") #pragma comment(lib, "dxerr.lib") class D3D10Renderer : public Singleton<D3D10Renderer> { public: D3D10Renderer(HWND hWnd); virtual ~D3D10Renderer(); bool Initialize(bool bFullScreen); void Shutdown(); void Render(); ID3D10Device* GetDevice(); uint32 GetViewportWidth(); uint32 GetViewportHeight(); void EnableZBuffer(bool bEnable); bool CreateSwapChain(); bool CreateDepthStencilView(); bool CreateRasterizerState(); bool CreateDepthStencil(); void CreateViewport(); void UpdateWindowTitle(); std::string Formater(const std::wstring& src); void SetFSAAMaximumLevel(); private: HWND m_hWnd; ID3D10Device* m_pd3dDevice; IDXGISwapChain* m_pSwapChain; ID3D10RenderTargetView* m_pRenderTargetView; ID3D10Texture2D* m_pDepthStencil; ID3D10DepthStencilView* m_pDepthStencilView; ID3D10DepthStencilState* m_pDSState; ID3D10RasterizerState* m_pRasterizerState; uint32 m_iWidth; uint32 m_iHeight; bool m_bFullscreen; uint32 m_iFSAALevel; }; #endif |
Voici le code du fichier D3D10Renderer.cpp :
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#include "D3D10Renderer.h" #include "System.h" #define WIN32_LEAN_AND_MEAN #include <Windows.h> template<> D3D10Renderer* Singleton<D3D10Renderer>::ms_instance = nullptr; D3D10Renderer::D3D10Renderer(HWND hWnd) : m_hWnd(hWnd), m_pd3dDevice(nullptr), m_pSwapChain(nullptr), m_pRenderTargetView(nullptr), m_pDepthStencil(nullptr), m_pDSState(nullptr), m_pDepthStencilView(nullptr), m_iWidth(0), m_iHeight(0), m_bFullscreen(false), m_iFSAALevel(8) { } D3D10Renderer::~D3D10Renderer() { if (m_pd3dDevice) { m_pd3dDevice->ClearState(); } SAFE_RELEASE(m_pRenderTargetView); SAFE_RELEASE(m_pSwapChain); SAFE_RELEASE(m_pd3dDevice); } bool D3D10Renderer::Initialize(bool bFullscreen) { m_bFullscreen = bFullscreen; // Variable pour stocker l'état erreur / succès HRESULT hr = S_OK;; if (!CreateSwapChain()) { return false; } // Créé le back buffer ID3D10Texture2D* pBackBuffer; hr = m_pSwapChain->GetBuffer(0, __uuidof(ID3D10Texture2D), (LPVOID*)&pBackBuffer); if (FAILED(hr)) { return false; } // Créé la render target hr = m_pd3dDevice->CreateRenderTargetView(pBackBuffer, nullptr, &m_pRenderTargetView); pBackBuffer->Release(); if (FAILED(hr)) { return false; } if (!CreateDepthStencilView()) { return false; } if (!CreateRasterizerState()) { return false; } if (!CreateDepthStencil()) { return false; } CreateViewport(); ShowCursor(false); return true; } void D3D10Renderer::Render() { __int64 cntsPerSec = 0; QueryPerformanceFrequency((LARGE_INTEGER*)&cntsPerSec); __int64 currTimeStamp = 0; QueryPerformanceCounter((LARGE_INTEGER*)&currTimeStamp); static __int64 prevTimeStamp = currTimeStamp; float secsPerCnt = 1.0f / (float)cntsPerSec; float fTimeSinceLastFrame = (currTimeStamp - prevTimeStamp) * secsPerCnt; static float afClearColor[4] = {0.85f, 1.0f, 1.0f, 1.0f}; // Efface la surface de rendu m_pd3dDevice->ClearDepthStencilView(m_pDepthStencilView, D3D10_CLEAR_DEPTH, 1.0f, 0 ); m_pd3dDevice->ClearRenderTargetView(m_pRenderTargetView, afClearColor); UpdateWindowTitle(); m_pSwapChain->Present(0, 0); prevTimeStamp = currTimeStamp; } ID3D10Device* D3D10Renderer::GetDevice() { return m_pd3dDevice; } uint32 D3D10Renderer::GetViewportWidth() { DXGI_SWAP_CHAIN_DESC swapChainDesc; ZeroMemory(&swapChainDesc, sizeof(swapChainDesc)); m_pSwapChain->GetDesc(&swapChainDesc); return swapChainDesc.BufferDesc.Width; } uint32 D3D10Renderer::GetViewportHeight() { DXGI_SWAP_CHAIN_DESC swapChainDesc; ZeroMemory(&swapChainDesc, sizeof(swapChainDesc)); m_pSwapChain->GetDesc(&swapChainDesc); return swapChainDesc.BufferDesc.Height; } void D3D10Renderer::EnableZBuffer(bool bEnable) { D3D10_DEPTH_STENCIL_DESC pDesc; m_pDSState->GetDesc(&pDesc); pDesc.DepthEnable = bEnable; m_pd3dDevice->OMSetDepthStencilState(m_pDSState, 1); } void D3D10Renderer::CreateViewport() { // Création du viewport D3D10_VIEWPORT vp; vp.Width = m_iWidth; vp.Height = m_iHeight; vp.MinDepth = 0.0f; vp.MaxDepth = 1.0f; vp.TopLeftX = 0; vp.TopLeftY = 0; m_pd3dDevice->RSSetViewports( 1, &vp ); } bool D3D10Renderer::CreateSwapChain() { // Rectangle 2D pour les dimensions de la fenêtre RECT rc; // On obtient les dimensions de la fenêtre courante GetClientRect(m_hWnd, &rc); // Largeur de la fenêtre m_iWidth = rc.right - rc.left; // Hauteur de la fenêtre m_iHeight = rc.bottom - rc.top; // Paramètres de création du device UINT createDeviceFlags = 0; // Permet d'afficher les éventuelles erreurs de la création du device createDeviceFlags |= D3D10_CREATE_DEVICE_DEBUG; // Création de la Swap Chain // c'est-à-dire création du front buffer et du back buffer DXGI_SWAP_CHAIN_DESC sd; ZeroMemory(&sd, sizeof(sd)); sd.BufferCount = 1; // Taille de la surface en pixels sd.BufferDesc.Width = m_iWidth; sd.BufferDesc.Height = m_iHeight; sd.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT; // Format des couleurs sd.BufferDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM; sd.BufferDesc.RefreshRate.Numerator = 0; sd.BufferDesc.RefreshRate.Denominator = 1; sd.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT; // L'handle de la fenêtre que l'on va afficher dessus sd.OutputWindow = m_hWnd; sd.SampleDesc.Count = m_iFSAALevel; sd.SampleDesc.Quality = 0; // Fenêtré ou non sd.Windowed = !m_bFullscreen; sd.SwapEffect = DXGI_SWAP_EFFECT_DISCARD; // On créé le device DirectX 10 et la Swap Chain HRESULT hr = D3D10CreateDeviceAndSwapChain(nullptr, D3D10_DRIVER_TYPE_HARDWARE, nullptr, createDeviceFlags, D3D10_SDK_VERSION, &sd, &m_pSwapChain, &m_pd3dDevice); if (FAILED(hr)) { ShowMessageBoxDXError(hr); return false; } SetFSAAMaximumLevel(); return true; } void D3D10Renderer::SetFSAAMaximumLevel() { HRESULT hr = S_OK; UINT maxQualityLevel = 1; for (uint32 iSampleCount = 1; iSampleCount <= D3D10_MAX_MULTISAMPLE_SAMPLE_COUNT; iSampleCount++) { hr = m_pd3dDevice->CheckMultisampleQualityLevels( DXGI_FORMAT_R8G8B8A8_UNORM, iSampleCount, &maxQualityLevel); if (hr != S_OK) { fastprint(Formater(L"CheckMultisampleQualityLevels a échoué.")); } if (maxQualityLevel > 0) { fastprint("MSAA " << iSampleCount << Formater(L"X supportée par la carte vidéo avec ") << maxQualityLevel << Formater(L" niveau(x) de qualité.")); } } } bool D3D10Renderer::CreateDepthStencilView() { HRESULT hr = S_OK; D3D10_TEXTURE2D_DESC descDepth; ZeroMemory(&descDepth, sizeof(descDepth)); descDepth.Width = m_iWidth; descDepth.Height = m_iHeight; descDepth.MipLevels = 1; descDepth.ArraySize = 1; descDepth.Format = DXGI_FORMAT_D32_FLOAT; descDepth.SampleDesc.Count = m_iFSAALevel; descDepth.SampleDesc.Quality = 0; descDepth.Usage = D3D10_USAGE_DEFAULT; descDepth.BindFlags = D3D10_BIND_DEPTH_STENCIL; descDepth.CPUAccessFlags = 0; descDepth.MiscFlags = 0; hr = m_pd3dDevice->CreateTexture2D(&descDepth, nullptr, &m_pDepthStencil); if (FAILED(hr)) { ShowMessageBoxDXError(hr); return false; } D3D10_DEPTH_STENCIL_VIEW_DESC descDSV; descDSV.Format = descDepth.Format; if (m_iFSAALevel > 1) { descDSV.ViewDimension = D3D10_DSV_DIMENSION_TEXTURE2DMS; } else { descDSV.ViewDimension = D3D10_DSV_DIMENSION_TEXTURE2D; } descDSV.Texture2D.MipSlice = 0; hr = m_pd3dDevice->CreateDepthStencilView(m_pDepthStencil, &descDSV, &m_pDepthStencilView); if (FAILED(hr)) { ShowMessageBoxDXError(hr); return false; } m_pd3dDevice->OMSetRenderTargets(1, &m_pRenderTargetView, m_pDepthStencilView); return true; } bool D3D10Renderer::CreateRasterizerState() { D3D10_RASTERIZER_DESC rasterizerState; rasterizerState.CullMode = D3D10_CULL_NONE; rasterizerState.FillMode = D3D10_FILL_SOLID; rasterizerState.FrontCounterClockwise = true; rasterizerState.DepthBias = false; rasterizerState.DepthBiasClamp = 0; rasterizerState.SlopeScaledDepthBias = 0; rasterizerState.DepthClipEnable = true; rasterizerState.ScissorEnable = false; rasterizerState.MultisampleEnable = true; rasterizerState.AntialiasedLineEnable = true; HRESULT hr = m_pd3dDevice->CreateRasterizerState(&rasterizerState, &m_pRasterizerState); m_pd3dDevice->RSSetState(m_pRasterizerState); if (FAILED(hr)) { ShowMessageBoxDXError(hr); return false; } return true; } bool D3D10Renderer::CreateDepthStencil() { D3D10_DEPTH_STENCIL_DESC pDesc; pDesc.DepthEnable = true; pDesc.DepthWriteMask = D3D10_DEPTH_WRITE_MASK_ALL; pDesc.DepthFunc = D3D10_COMPARISON_LESS; pDesc.StencilEnable = true; pDesc.StencilReadMask = 0xFF; pDesc.StencilWriteMask = 0xFF; pDesc.FrontFace.StencilFailOp = D3D10_STENCIL_OP_KEEP; pDesc.FrontFace.StencilDepthFailOp = D3D10_STENCIL_OP_INCR; pDesc.FrontFace.StencilPassOp = D3D10_STENCIL_OP_KEEP; pDesc.FrontFace.StencilFunc = D3D10_COMPARISON_ALWAYS; pDesc.BackFace.StencilFailOp = D3D10_STENCIL_OP_KEEP; pDesc.BackFace.StencilDepthFailOp = D3D10_STENCIL_OP_DECR; pDesc.BackFace.StencilPassOp = D3D10_STENCIL_OP_KEEP; pDesc.BackFace.StencilFunc = D3D10_COMPARISON_ALWAYS; HRESULT hr = m_pd3dDevice->CreateDepthStencilState(&pDesc, &m_pDSState); if (FAILED(hr)) { ShowMessageBoxDXError(hr); return false; } m_pd3dDevice->OMSetDepthStencilState(m_pDSState, 1); return true; } FPSCamera* D3D10Renderer::GetCamera() { return m_pCamera; } void D3D10Renderer::OnKeyPressed(const KeyEvent& arg) { if (arg.keyCode == VK_ESCAPE) { SYSTEM->Quit(); } } void D3D10Renderer::OnKeyReleased(const KeyEvent& arg) { } void D3D10Renderer::UpdateWindowTitle() { static char buffer[256]; D3DXVECTOR3 camPos = D3DXVECTOR3(1.0f, 1.0f, 1.0f); sprintf(buffer, "Position de la caméra : X = %.2f Y = %.2f Z = %.2f", camPos.x, camPos.y, camPos.z); // On met à jour le titre de la fenêtre SetWindowTextA(m_hWnd, buffer); } std::string D3D10Renderer::Formater(const std::wstring& src) { char outString[512]; CharToOemW(src.c_str(), outString); return std::string(outString); } |
Résumé :
Nous avons présenté les deux fichiers nécessaire à l’initialiser du rendu graphique de DirectX !