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Nuklear/demo/d3d11/main.c
vurtun 02718210e6 Added additional property version for double 
Nuklear now has three different property versions for int, float and
added by this commit a double version. Internally an additional change
happend. Now the type of the property is actually taken into account
and floating pointer errors due to casting are less of an issue.
2016-08-12 12:08:13 +02:00

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/* nuklear - v1.09 - 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 include
* and the corresponding function. */
#define UNUSED(a) (void)a
#define MIN(a,b) ((a) < (b) ? (a) : (b))
#define MAX(a,b) ((a) < (b) ? (b) : (a))
#define LEN(a) (sizeof(a)/sizeof(a)[0])
/*#include "../style.c"*/
/*#include "../calculator.c"*/
/*#include "../overview.c"*/
/*#include "../node_editor.c"*/
/* ===============================================================
*
* 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, &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_color background;
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.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/Robot-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 */
/*set_style(ctx, THEME_WHITE);*/
/*set_style(ctx, THEME_RED);*/
/*set_style(ctx, THEME_BLUE);*/
/*set_style(ctx, THEME_DARK);*/
background = nk_rgb(28,48,62);
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 */
{struct nk_panel layout;
if (nk_begin(ctx, &layout, "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);
{struct nk_panel combo;
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, &combo, background, 400)) {
nk_layout_row_dynamic(ctx, 120, 1);
background = nk_color_picker(ctx, background, NK_RGBA);
nk_layout_row_dynamic(ctx, 25, 1);
background.r = (nk_byte)nk_propertyi(ctx, "#R:", 0, background.r, 255, 1,1);
background.g = (nk_byte)nk_propertyi(ctx, "#G:", 0, background.g, 255, 1,1);
background.b = (nk_byte)nk_propertyi(ctx, "#B:", 0, background.b, 255, 1,1);
background.a = (nk_byte)nk_propertyi(ctx, "#A:", 0, background.a, 255, 1,1);
nk_combo_end(ctx);
}}
}
nk_end(ctx);}
if (nk_window_is_closed(ctx, "Demo")) break;
/* -------------- EXAMPLES ---------------- */
/*calculator(ctx);*/
/*overview(ctx);*/
/*node_editor(ctx);*/
/* ----------------------------------------- */
{/* Draw */
float bg[4];
nk_color_fv(bg, background);
ID3D11DeviceContext_ClearRenderTargetView(context, rt_view, bg);
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();
ID3D11ShaderResourceView_Release(rt_view);
ID3D11DeviceContext_Release(context);
ID3D11Device_Release(device);
IDXGISwapChain_Release(swap_chain);
UnregisterClassW(wc.lpszClassName, wc.hInstance);
return 0;
}
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