I am new to the DXGI's flip mode. Some problems with it.
1. I cannot find a clear example d3d11 DXGI flip mode example
2. I create a toy example of DXGI's flip model. When I resize it, there is a clear blank on the edge, and the window is also flickering.
Is there some hidden rules
The code is mainly in the 01_DirectX11_Initialization example's d3dApp.cpp https://github.com/sienaiwun/DirectX11-With-Windows-SDK/blob/master/Project%2001-09/01%20DirectX11%20Initialization/d3dApp.cpp
//OnResize
ComPtr<ID3D11Texture2D> backBuffer;
HR(m_pSwapChain->ResizeBuffers(2, m_ClientWidth, m_ClientHeight, DXGI_FORMAT_R8G8B8A8_UNORM, 0));
HR(m_pSwapChain->GetBuffer(0, __uuidof(ID3D11Texture2D), reinterpret_cast<void**>(backBuffer.GetAddressOf())));
HR(m_pd3dDevice->CreateRenderTargetView(backBuffer.Get(), nullptr, m_pRenderTargetView.GetAddressOf()));
D3D11SetDebugObjectName(backBuffer.Get(), "BackBuffer[0]");
backBuffer.Reset();
D3D11_TEXTURE2D_DESC depthStencilDesc;
depthStencilDesc.Width = m_ClientWidth;
depthStencilDesc.Height = m_ClientHeight;
depthStencilDesc.MipLevels = 1;
depthStencilDesc.ArraySize = 1;
depthStencilDesc.Format = DXGI_FORMAT_D24_UNORM_S8_UINT;
depthStencilDesc.SampleDesc.Count = 1;
depthStencilDesc.SampleDesc.Quality = 0;
depthStencilDesc.Usage = D3D11_USAGE_DEFAULT;
depthStencilDesc.BindFlags = D3D11_BIND_DEPTH_STENCIL;
depthStencilDesc.CPUAccessFlags = 0;
depthStencilDesc.MiscFlags = 0;
HR(m_pd3dDevice->CreateTexture2D(&depthStencilDesc, nullptr, m_pDepthStencilBuffer.GetAddressOf()));
HR(m_pd3dDevice->CreateDepthStencilView(m_pDepthStencilBuffer.Get(), nullptr, m_pDepthStencilView.GetAddressOf()));
m_pd3dImmediateContext->OMSetRenderTargets(1, m_pRenderTargetView.GetAddressOf(), m_pDepthStencilView.Get());
// 设置视口变换
m_ScreenViewport.TopLeftX = 0;
m_ScreenViewport.TopLeftY = 0;
m_ScreenViewport.Width = static_cast<float>(m_ClientWidth);
m_ScreenViewport.Height = static_cast<float>(m_ClientHeight);
m_ScreenViewport.MinDepth = 0.0f;
m_ScreenViewport.MaxDepth = 1.0f;
m_pd3dImmediateContext->RSSetViewports(1, &m_ScreenViewport); /*InitDirect3DSweepChain*/
HR(m_pd3dDevice.As(&dxgiDevice));
HR(dxgiDevice->GetAdapter(dxgiAdapter.GetAddressOf()));
HR(dxgiAdapter->GetParent(__uuidof(IDXGIFactory1), reinterpret_cast<void**>(dxgiFactory1.GetAddressOf())));
hr = dxgiFactory1.As(&dxgiFactory2);
{
HR(m_pd3dDevice.As(&m_pd3dDevice1));
HR(m_pd3dImmediateContext.As(&m_pd3dImmediateContext1));
// 填充各种结构体用以描述交换链
DXGI_SWAP_CHAIN_DESC1 sd;
ZeroMemory(&sd, sizeof(sd));
sd.Width = m_ClientWidth;
sd.Height = m_ClientHeight;
sd.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
sd.SampleDesc.Count = 1;
sd.SampleDesc.Quality = 0;
sd.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT;
sd.BufferCount = 2;
sd.SwapEffect = DXGI_SWAP_EFFECT_FLIP_SEQUENTIAL;
sd.Flags = 0;
DXGI_SWAP_CHAIN_FULLSCREEN_DESC fd;
fd.RefreshRate.Numerator = 60;
fd.RefreshRate.Denominator = 1;
fd.Scaling = DXGI_MODE_SCALING_UNSPECIFIED;
fd.ScanlineOrdering = DXGI_MODE_SCANLINE_ORDER_UNSPECIFIED;
fd.Windowed = TRUE;
HR(dxgiFactory2->CreateSwapChainForHwnd(m_pd3dDevice.Get(), m_hMainWnd, &sd, &fd, nullptr, m_pSwapChain1.GetAddressOf()));
HR(m_pSwapChain1.As(&m_pSwapChain));
}
dxgiFactory1->MakeWindowAssociation(m_hMainWnd, DXGI_MWA_NO_ALT_ENTER | DXGI_MWA_NO_WINDOW_CHANGES);
D3D11SetDebugObjectName(m_pd3dImmediateContext.Get(), "ImmediateContext");
DXGISetDebugObjectName(m_pSwapChain.Get(), "SwapChain");
// 以避免代码重复
OnResize();
return true;
