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Nuklear/demo/d3d11/main.c

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/* nuklear - 1.32.0 - public domain */
#define COBJMACROS
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#include <d3d11.h>
#include <stdio.h>
#include <string.h>
#include <limits.h>
#include <time.h>
#define WINDOW_WIDTH 800
#define WINDOW_HEIGHT 600
#define MAX_VERTEX_BUFFER 512 * 1024
#define MAX_INDEX_BUFFER 128 * 1024
#define NK_INCLUDE_FIXED_TYPES
#define NK_INCLUDE_STANDARD_IO
#define NK_INCLUDE_STANDARD_VARARGS
#define NK_INCLUDE_DEFAULT_ALLOCATOR
#define NK_INCLUDE_VERTEX_BUFFER_OUTPUT
#define NK_INCLUDE_FONT_BAKING
#define NK_INCLUDE_DEFAULT_FONT
#define NK_IMPLEMENTATION
#define NK_D3D11_IMPLEMENTATION
#include "../../nuklear.h"
#include "nuklear_d3d11.h"
/* ===============================================================
*
* EXAMPLE
*
* ===============================================================*/
/* This are some code examples to provide a small overview of what can be
* done with this library. To try out an example uncomment the defines */
/*#define INCLUDE_ALL */
/*#define INCLUDE_STYLE */
/*#define INCLUDE_CALCULATOR */
/*#define INCLUDE_OVERVIEW */
/*#define INCLUDE_NODE_EDITOR */
#ifdef INCLUDE_ALL
#define INCLUDE_STYLE
#define INCLUDE_CALCULATOR
#define INCLUDE_OVERVIEW
#define INCLUDE_NODE_EDITOR
#endif
#ifdef INCLUDE_STYLE
#include "../style.c"
#endif
#ifdef INCLUDE_CALCULATOR
#include "../calculator.c"
#endif
#ifdef INCLUDE_OVERVIEW
#include "../overview.c"
#endif
#ifdef INCLUDE_NODE_EDITOR
#include "../node_editor.c"
#endif
/* ===============================================================
*
* DEMO
*
* ===============================================================*/
static IDXGISwapChain *swap_chain;
static ID3D11Device *device;
static ID3D11DeviceContext *context;
static ID3D11RenderTargetView* rt_view;
static void
set_swap_chain_size(int width, int height)
{
ID3D11Texture2D *back_buffer;
D3D11_RENDER_TARGET_VIEW_DESC desc;
HRESULT hr;
if (rt_view)
ID3D11RenderTargetView_Release(rt_view);
ID3D11DeviceContext_OMSetRenderTargets(context, 0, NULL, NULL);
hr = IDXGISwapChain_ResizeBuffers(swap_chain, 0, width, height, DXGI_FORMAT_UNKNOWN, 0);
if (hr == DXGI_ERROR_DEVICE_REMOVED || hr == DXGI_ERROR_DEVICE_RESET || hr == DXGI_ERROR_DRIVER_INTERNAL_ERROR)
{
/* to recover from this, you'll need to recreate device and all the resources */
MessageBoxW(NULL, L"DXGI device is removed or reset!", L"Error", 0);
exit(0);
}
assert(SUCCEEDED(hr));
memset(&desc, 0, sizeof(desc));
desc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
desc.ViewDimension = D3D11_RTV_DIMENSION_TEXTURE2D;
hr = IDXGISwapChain_GetBuffer(swap_chain, 0, &IID_ID3D11Texture2D, (void **)&back_buffer);
assert(SUCCEEDED(hr));
hr = ID3D11Device_CreateRenderTargetView(device, (ID3D11Resource *)back_buffer, &desc, &rt_view);
assert(SUCCEEDED(hr));
ID3D11Texture2D_Release(back_buffer);
}
static LRESULT CALLBACK
WindowProc(HWND wnd, UINT msg, WPARAM wparam, LPARAM lparam)
{
switch (msg)
{
case WM_DESTROY:
PostQuitMessage(0);
return 0;
case WM_SIZE:
if (swap_chain)
{
int width = LOWORD(lparam);
int height = HIWORD(lparam);
set_swap_chain_size(width, height);
nk_d3d11_resize(context, width, height);
}
break;
}
if (nk_d3d11_handle_event(wnd, msg, wparam, lparam))
return 0;
return DefWindowProcW(wnd, msg, wparam, lparam);
}
int main(void)
{
struct nk_context *ctx;
struct nk_colorf bg;
WNDCLASSW wc;
RECT rect = { 0, 0, WINDOW_WIDTH, WINDOW_HEIGHT };
DWORD style = WS_OVERLAPPEDWINDOW;
DWORD exstyle = WS_EX_APPWINDOW;
HWND wnd;
int running = 1;
HRESULT hr;
D3D_FEATURE_LEVEL feature_level;
DXGI_SWAP_CHAIN_DESC swap_chain_desc;
/* Win32 */
memset(&wc, 0, sizeof(wc));
wc.style = CS_DBLCLKS;
wc.lpfnWndProc = WindowProc;
wc.hInstance = GetModuleHandleW(0);
wc.hIcon = LoadIcon(NULL, IDI_APPLICATION);
wc.hCursor = LoadCursor(NULL, IDC_ARROW);
wc.lpszClassName = L"NuklearWindowClass";
RegisterClassW(&wc);
AdjustWindowRectEx(&rect, style, FALSE, exstyle);
wnd = CreateWindowExW(exstyle, wc.lpszClassName, L"Nuklear Demo",
style | WS_VISIBLE, CW_USEDEFAULT, CW_USEDEFAULT,
rect.right - rect.left, rect.bottom - rect.top,
NULL, NULL, wc.hInstance, NULL);
/* D3D11 setup */
memset(&swap_chain_desc, 0, sizeof(swap_chain_desc));
swap_chain_desc.BufferDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
swap_chain_desc.BufferDesc.RefreshRate.Numerator = 60;
swap_chain_desc.BufferDesc.RefreshRate.Denominator = 1;
swap_chain_desc.SampleDesc.Count = 1;
swap_chain_desc.SampleDesc.Quality = 0;
swap_chain_desc.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT;
swap_chain_desc.BufferCount = 1;
swap_chain_desc.OutputWindow = wnd;
swap_chain_desc.Windowed = TRUE;
swap_chain_desc.SwapEffect = DXGI_SWAP_EFFECT_DISCARD;
swap_chain_desc.Flags = 0;
if (FAILED(D3D11CreateDeviceAndSwapChain(NULL, D3D_DRIVER_TYPE_HARDWARE,
NULL, 0, NULL, 0, D3D11_SDK_VERSION, &swap_chain_desc,
&swap_chain, &device, &feature_level, &context)))
{
/* if hardware device fails, then try WARP high-performance
software rasterizer, this is useful for RDP sessions */
hr = D3D11CreateDeviceAndSwapChain(NULL, D3D_DRIVER_TYPE_WARP,
NULL, 0, NULL, 0, D3D11_SDK_VERSION, &swap_chain_desc,
&swap_chain, &device, &feature_level, &context);
assert(SUCCEEDED(hr));
}
set_swap_chain_size(WINDOW_WIDTH, WINDOW_HEIGHT);
/* GUI */
ctx = nk_d3d11_init(device, WINDOW_WIDTH, WINDOW_HEIGHT, MAX_VERTEX_BUFFER, MAX_INDEX_BUFFER);
/* Load Fonts: if none of these are loaded a default font will be used */
/* Load Cursor: if you uncomment cursor loading please hide the cursor */
{struct nk_font_atlas *atlas;
nk_d3d11_font_stash_begin(&atlas);
/*struct nk_font *droid = nk_font_atlas_add_from_file(atlas, "../../extra_font/DroidSans.ttf", 14, 0);*/
/*struct nk_font *robot = nk_font_atlas_add_from_file(atlas, "../../extra_font/Roboto-Regular.ttf", 14, 0);*/
/*struct nk_font *future = nk_font_atlas_add_from_file(atlas, "../../extra_font/kenvector_future_thin.ttf", 13, 0);*/
/*struct nk_font *clean = nk_font_atlas_add_from_file(atlas, "../../extra_font/ProggyClean.ttf", 12, 0);*/
/*struct nk_font *tiny = nk_font_atlas_add_from_file(atlas, "../../extra_font/ProggyTiny.ttf", 10, 0);*/
/*struct nk_font *cousine = nk_font_atlas_add_from_file(atlas, "../../extra_font/Cousine-Regular.ttf", 13, 0);*/
nk_d3d11_font_stash_end();
/*nk_style_load_all_cursors(ctx, atlas->cursors);*/
/*nk_style_set_font(ctx, &droid->handle)*/;}
/* style.c */
#ifdef INCLUDE_STYLE
/*set_style(ctx, THEME_WHITE);*/
/*set_style(ctx, THEME_RED);*/
/*set_style(ctx, THEME_BLUE);*/
/*set_style(ctx, THEME_DARK);*/
#endif
bg.r = 0.10f, bg.g = 0.18f, bg.b = 0.24f, bg.a = 1.0f;
while (running)
{
/* Input */
MSG msg;
nk_input_begin(ctx);
while (PeekMessageW(&msg, NULL, 0, 0, PM_REMOVE))
{
if (msg.message == WM_QUIT)
running = 0;
TranslateMessage(&msg);
DispatchMessageW(&msg);
}
nk_input_end(ctx);
/* GUI */
if (nk_begin(ctx, "Demo", nk_rect(50, 50, 230, 250),
NK_WINDOW_BORDER|NK_WINDOW_MOVABLE|NK_WINDOW_SCALABLE|
NK_WINDOW_MINIMIZABLE|NK_WINDOW_TITLE))
{
enum {EASY, HARD};
static int op = EASY;
static int property = 20;
nk_layout_row_static(ctx, 30, 80, 1);
if (nk_button_label(ctx, "button"))
fprintf(stdout, "button pressed\n");
nk_layout_row_dynamic(ctx, 30, 2);
if (nk_option_label(ctx, "easy", op == EASY)) op = EASY;
if (nk_option_label(ctx, "hard", op == HARD)) op = HARD;
nk_layout_row_dynamic(ctx, 22, 1);
nk_property_int(ctx, "Compression:", 0, &property, 100, 10, 1);
nk_layout_row_dynamic(ctx, 20, 1);
nk_label(ctx, "background:", NK_TEXT_LEFT);
nk_layout_row_dynamic(ctx, 25, 1);
if (nk_combo_begin_color(ctx, nk_rgb_cf(bg), nk_vec2(nk_widget_width(ctx),400))) {
nk_layout_row_dynamic(ctx, 120, 1);
bg = nk_color_picker(ctx, bg, NK_RGBA);
nk_layout_row_dynamic(ctx, 25, 1);
bg.r = nk_propertyf(ctx, "#R:", 0, bg.r, 1.0f, 0.01f,0.005f);
bg.g = nk_propertyf(ctx, "#G:", 0, bg.g, 1.0f, 0.01f,0.005f);
bg.b = nk_propertyf(ctx, "#B:", 0, bg.b, 1.0f, 0.01f,0.005f);
bg.a = nk_propertyf(ctx, "#A:", 0, bg.a, 1.0f, 0.01f,0.005f);
nk_combo_end(ctx);
}
}
nk_end(ctx);
/* -------------- EXAMPLES ---------------- */
#ifdef INCLUDE_CALCULATOR
calculator(ctx);
#endif
#ifdef INCLUDE_OVERVIEW
overview(ctx);
#endif
#ifdef INCLUDE_NODE_EDITOR
node_editor(ctx);
#endif
/* ----------------------------------------- */
/* Draw */
ID3D11DeviceContext_ClearRenderTargetView(context, rt_view, &bg.r);
ID3D11DeviceContext_OMSetRenderTargets(context, 1, &rt_view, NULL);
nk_d3d11_render(context, NK_ANTI_ALIASING_ON);
hr = IDXGISwapChain_Present(swap_chain, 1, 0);
if (hr == DXGI_ERROR_DEVICE_RESET || hr == DXGI_ERROR_DEVICE_REMOVED) {
/* to recover from this, you'll need to recreate device and all the resources */
MessageBoxW(NULL, L"D3D11 device is lost or removed!", L"Error", 0);
break;
} else if (hr == DXGI_STATUS_OCCLUDED) {
/* window is not visible, so vsync won't work. Let's sleep a bit to reduce CPU usage */
Sleep(10);
}
assert(SUCCEEDED(hr));
}
ID3D11DeviceContext_ClearState(context);
nk_d3d11_shutdown();
ID3D11RenderTargetView_Release(rt_view);
ID3D11DeviceContext_Release(context);
ID3D11Device_Release(device);
IDXGISwapChain_Release(swap_chain);
UnregisterClassW(wc.lpszClassName, wc.hInstance);
return 0;
}
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