IDXGISwapChain::ResizeBuffers triggers breakpoint when switching from fullscreen to windowed

Question

Whenever my Direct3D 11 application switches from fullscreen to windowed mode, IDXGISwapChain::ResizeBuffers triggers a breakpoint. In Visual Studio's console, the message "Critical error 0xc0000374" is printed, with no other information. Apparently this means a heap corruption has occurred. Okay then. I can't get any more information about why this occurred because the window obnoxiously obscures my view and prevents me from controlling the visual studio window.

I'm following the suggestions made on this MSDN page. By that I mean I copied and pasted the code.

This is my setup code (ignore the lack of error checking):

DXGI_SWAP_CHAIN_DESC swap_chain_desc = { 0 };
swap_chain_desc.BufferCount = 2;
swap_chain_desc.BufferDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
swap_chain_desc.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT;
swap_chain_desc.OutputWindow = window::get();
swap_chain_desc.SampleDesc.Count = 1;
swap_chain_desc.SwapEffect = DXGI_SWAP_EFFECT_DISCARD;
swap_chain_desc.Windowed = TRUE;
swap_chain_desc.Flags = DXGI_SWAP_CHAIN_FLAG_ALLOW_MODE_SWITCH;

if (fullscreen == 1) {
    swap_chain_desc.BufferDesc.Width = window::desktop_width();
    swap_chain_desc.BufferDesc.Height = window::desktop_height();
} else {
    swap_chain_desc.BufferDesc.Width = window::width();
    swap_chain_desc.BufferDesc.Height = window::height();
}

HRESULT hr = D3D11CreateDeviceAndSwapChain (
    NULL,
    D3D_DRIVER_TYPE_HARDWARE,
    NULL,
    NULL,
    NULL,
    NULL,
    D3D11_SDK_VERSION,
    &swap_chain_desc,
    &m_swap_chain,
    &m_device,
    NULL,
    &m_context
);

ID3D11Texture2D* back_buffer;
hr = m_swap_chain->GetBuffer(0, __uuidof(ID3D11Texture2D), (void**)&back_buffer);

hr = m_device->CreateRenderTargetView(back_buffer, NULL, &m_view);

back_buffer->Release();

m_context->OMSetRenderTargets(1, &m_view, NULL);

D3D11_VIEWPORT viewport = { 0 };
viewport.TopLeftX = 0;
viewport.TopLeftY = 0;
viewport.MinDepth = 0.0f;
viewport.MaxDepth = 1.0f;

if (fullscreen == 1) {
    viewport.Width = window::desktop_width();
    viewport.Height = window::desktop_height();
} else {
    viewport.Width = window::width();
    viewport.Height = window::height();
}

m_context->RSSetViewports(1, &viewport);

if (fullscreen == 1) {
    m_swap_chain->SetFullscreenState(TRUE, NULL);
}

Is there anything there that might have caused this problem? The rendering code is just a ClearRenderTargetView and Present after a PeekMessage loop, nothing important.

Answer 1

This issue was fixed by showing the window before setting the swap chain's fullscreen state. Either call UpdateWindow(hwnd) and ShowWindow(hwnd, SW_SHOW) or set the window style to WS_VISIBLE when calling CreateWindow() or CreateWindowEx(), preferably before doing anything DirectX related.