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Diffstat (limited to 'samples/D3D12/external/imgui/examples/directx12_example/main.cpp')
| -rw-r--r-- | samples/D3D12/external/imgui/examples/directx12_example/main.cpp | 225 |
1 files changed, 225 insertions, 0 deletions
diff --git a/samples/D3D12/external/imgui/examples/directx12_example/main.cpp b/samples/D3D12/external/imgui/examples/directx12_example/main.cpp new file mode 100644 index 0000000..7ac1fd1 --- /dev/null +++ b/samples/D3D12/external/imgui/examples/directx12_example/main.cpp @@ -0,0 +1,225 @@ +// ImGui - standalone example application for DirectX 11 + +#include <imgui.h> +#include "imgui_impl_dx11.h" +#include <d3d11.h> +#include <d3dcompiler.h> +#define DIRECTINPUT_VERSION 0x0800 +#include <dinput.h> + +// Data +static ID3D11Device* g_pd3dDevice = NULL; +static ID3D11DeviceContext* g_pd3dDeviceContext = NULL; +static IDXGISwapChain* g_pSwapChain = NULL; +static ID3D11RenderTargetView* g_mainRenderTargetView = NULL; + +void CreateRenderTarget() +{ + DXGI_SWAP_CHAIN_DESC sd; + g_pSwapChain->GetDesc(&sd); + + // Create the render target + ID3D11Texture2D* pBackBuffer; + D3D11_RENDER_TARGET_VIEW_DESC render_target_view_desc; + ZeroMemory(&render_target_view_desc, sizeof(render_target_view_desc)); + render_target_view_desc.Format = sd.BufferDesc.Format; + render_target_view_desc.ViewDimension = D3D11_RTV_DIMENSION_TEXTURE2D; + g_pSwapChain->GetBuffer(0, __uuidof(ID3D11Texture2D), (LPVOID*)&pBackBuffer); + g_pd3dDevice->CreateRenderTargetView(pBackBuffer, &render_target_view_desc, &g_mainRenderTargetView); + g_pd3dDeviceContext->OMSetRenderTargets(1, &g_mainRenderTargetView, NULL); + pBackBuffer->Release(); +} + +void CleanupRenderTarget() +{ + if (g_mainRenderTargetView) { g_mainRenderTargetView->Release(); g_mainRenderTargetView = NULL; } +} + +HRESULT CreateDeviceD3D(HWND hWnd) +{ + // Setup swap chain + DXGI_SWAP_CHAIN_DESC sd; + { + ZeroMemory(&sd, sizeof(sd)); + sd.BufferCount = 2; + sd.BufferDesc.Width = 0; + sd.BufferDesc.Height = 0; + sd.BufferDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM; + sd.BufferDesc.RefreshRate.Numerator = 60; + sd.BufferDesc.RefreshRate.Denominator = 1; + sd.Flags = DXGI_SWAP_CHAIN_FLAG_ALLOW_MODE_SWITCH; + sd.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT; + sd.OutputWindow = hWnd; + sd.SampleDesc.Count = 1; + sd.SampleDesc.Quality = 0; + sd.Windowed = TRUE; + sd.SwapEffect = DXGI_SWAP_EFFECT_DISCARD; + } + + UINT createDeviceFlags = 0; +#ifdef _DEBUG + createDeviceFlags |= D3D11_CREATE_DEVICE_DEBUG; +#endif + D3D_FEATURE_LEVEL featureLevel; + const D3D_FEATURE_LEVEL featureLevelArray[1] = { D3D_FEATURE_LEVEL_11_0, }; + if (D3D11CreateDeviceAndSwapChain(NULL, D3D_DRIVER_TYPE_HARDWARE, NULL, createDeviceFlags, featureLevelArray, 1, D3D11_SDK_VERSION, &sd, &g_pSwapChain, &g_pd3dDevice, &featureLevel, &g_pd3dDeviceContext) != S_OK) + return E_FAIL; + + // Setup rasterizer + { + D3D11_RASTERIZER_DESC RSDesc; + memset(&RSDesc, 0, sizeof(D3D11_RASTERIZER_DESC)); + RSDesc.FillMode = D3D11_FILL_SOLID; + RSDesc.CullMode = D3D11_CULL_NONE; + RSDesc.FrontCounterClockwise = FALSE; + RSDesc.DepthBias = 0; + RSDesc.SlopeScaledDepthBias = 0.0f; + RSDesc.DepthBiasClamp = 0; + RSDesc.DepthClipEnable = TRUE; + RSDesc.ScissorEnable = TRUE; + RSDesc.AntialiasedLineEnable = FALSE; + RSDesc.MultisampleEnable = (sd.SampleDesc.Count > 1) ? TRUE : FALSE; + + ID3D11RasterizerState* pRState = NULL; + g_pd3dDevice->CreateRasterizerState(&RSDesc, &pRState); + g_pd3dDeviceContext->RSSetState(pRState); + pRState->Release(); + } + + CreateRenderTarget(); + + return S_OK; +} + +void CleanupDeviceD3D() +{ + CleanupRenderTarget(); + if (g_pSwapChain) { g_pSwapChain->Release(); g_pSwapChain = NULL; } + if (g_pd3dDeviceContext) { g_pd3dDeviceContext->Release(); g_pd3dDeviceContext = NULL; } + if (g_pd3dDevice) { g_pd3dDevice->Release(); g_pd3dDevice = NULL; } +} + +extern LRESULT ImGui_ImplDX11_WndProcHandler(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam); +LRESULT WINAPI WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam) +{ + if (ImGui_ImplDX11_WndProcHandler(hWnd, msg, wParam, lParam)) + return true; + + switch (msg) + { + case WM_SIZE: + if (g_pd3dDevice != NULL && wParam != SIZE_MINIMIZED) + { + ImGui_ImplDX11_InvalidateDeviceObjects(); + CleanupRenderTarget(); + g_pSwapChain->ResizeBuffers(0, (UINT)LOWORD(lParam), (UINT)HIWORD(lParam), DXGI_FORMAT_UNKNOWN, 0); + CreateRenderTarget(); + ImGui_ImplDX11_CreateDeviceObjects(); + } + return 0; + case WM_SYSCOMMAND: + if ((wParam & 0xfff0) == SC_KEYMENU) // Disable ALT application menu + return 0; + break; + case WM_DESTROY: + PostQuitMessage(0); + return 0; + } + return DefWindowProc(hWnd, msg, wParam, lParam); +} + +int main(int, char**) +{ + // Create application window + WNDCLASSEX wc = { sizeof(WNDCLASSEX), CS_CLASSDC, WndProc, 0L, 0L, GetModuleHandle(NULL), NULL, LoadCursor(NULL, IDC_ARROW), NULL, NULL, L"ImGui Example", NULL }; + RegisterClassEx(&wc); + HWND hwnd = CreateWindow(L"ImGui Example", L"ImGui DirectX11 Example", WS_OVERLAPPEDWINDOW, 100, 100, 1280, 800, NULL, NULL, wc.hInstance, NULL); + + // Initialize Direct3D + if (CreateDeviceD3D(hwnd) < 0) + { + CleanupDeviceD3D(); + UnregisterClass(L"ImGui Example", wc.hInstance); + return 1; + } + + // Show the window + ShowWindow(hwnd, SW_SHOWDEFAULT); + UpdateWindow(hwnd); + + // Setup ImGui binding + ImGui_ImplDX11_Init(hwnd, g_pd3dDevice, g_pd3dDeviceContext); + + // Load Fonts + // (see extra_fonts/README.txt for more details) + //ImGuiIO& io = ImGui::GetIO(); + //io.Fonts->AddFontDefault(); + //io.Fonts->AddFontFromFileTTF("../../extra_fonts/Cousine-Regular.ttf", 15.0f); + //io.Fonts->AddFontFromFileTTF("../../extra_fonts/DroidSans.ttf", 16.0f); + //io.Fonts->AddFontFromFileTTF("../../extra_fonts/ProggyClean.ttf", 13.0f); + //io.Fonts->AddFontFromFileTTF("../../extra_fonts/ProggyTiny.ttf", 10.0f); + //io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese()); + + // Merge glyphs from multiple fonts into one (e.g. combine default font with another with Chinese glyphs, or add icons) + //ImWchar icons_ranges[] = { 0xf000, 0xf3ff, 0 }; + //ImFontConfig icons_config; icons_config.MergeMode = true; icons_config.PixelSnapH = true; + //io.Fonts->AddFontFromFileTTF("../../extra_fonts/DroidSans.ttf", 18.0f); + //io.Fonts->AddFontFromFileTTF("../../extra_fonts/fontawesome-webfont.ttf", 18.0f, &icons_config, icons_ranges); + + bool show_test_window = true; + bool show_another_window = false; + ImVec4 clear_col = ImColor(114, 144, 154); + + // Main loop + MSG msg; + ZeroMemory(&msg, sizeof(msg)); + while (msg.message != WM_QUIT) + { + if (PeekMessage(&msg, NULL, 0U, 0U, PM_REMOVE)) + { + TranslateMessage(&msg); + DispatchMessage(&msg); + continue; + } + ImGui_ImplDX11_NewFrame(); + + // 1. Show a simple window + // Tip: if we don't call ImGui::Begin()/ImGui::End() the widgets appears in a window automatically called "Debug" + { + static float f = 0.0f; + ImGui::Text("Hello, world!"); + ImGui::SliderFloat("float", &f, 0.0f, 1.0f); + ImGui::ColorEdit3("clear color", (float*)&clear_col); + if (ImGui::Button("Test Window")) show_test_window ^= 1; + if (ImGui::Button("Another Window")) show_another_window ^= 1; + ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate); + } + + // 2. Show another simple window, this time using an explicit Begin/End pair + if (show_another_window) + { + ImGui::SetNextWindowSize(ImVec2(200,100), ImGuiSetCond_FirstUseEver); + ImGui::Begin("Another Window", &show_another_window); + ImGui::Text("Hello"); + ImGui::End(); + } + + // 3. Show the ImGui test window. Most of the sample code is in ImGui::ShowTestWindow() + if (show_test_window) + { + ImGui::SetNextWindowPos(ImVec2(650, 20), ImGuiSetCond_FirstUseEver); // Normally user code doesn't need/want to call it because positions are saved in .ini file anyway. Here we just want to make the demo initial state a bit more friendly! + ImGui::ShowTestWindow(&show_test_window); + } + + // Rendering + g_pd3dDeviceContext->ClearRenderTargetView(g_mainRenderTargetView, (float*)&clear_col); + ImGui::Render(); + g_pSwapChain->Present(0, 0); + } + + ImGui_ImplDX11_Shutdown(); + CleanupDeviceD3D(); + UnregisterClass(L"ImGui Example", wc.hInstance); + + return 0; +} |