Как переключаться между цветами фона в DirectX

Я делаю предложение, которое, я надеюсь, поможет вам. попробуйте эти шаги:

включите основные заголовочные файлы Windows и заголовочный файл Direct3D:

#include <windows.h>
#include <windowsx.h>
#include <d3d9.h>

включите файл библиотеки Direct3D:

#pragma comment (lib, "d3d9.lib")

затем добавьте ниже коды тоже:

// global declarations
LPDIRECT3D9 d3d;    // the pointer to our Direct3D interface
LPDIRECT3DDEVICE9 d3ddev;    // the pointer to the device class

// function prototypes
void initD3D(HWND hWnd);    // sets up and initializes Direct3D
void render_frame(void);    // renders a single frame
void cleanD3D(void);    // closes Direct3D and releases memory

// the WindowProc function prototype
LRESULT CALLBACK WindowProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam);// the entry point for any Windows program
int WINAPI WinMain(HINSTANCE hInstance,
HINSTANCE hPrevInstance,
LPSTR lpCmdLine,
int nCmdShow)
{
HWND hWnd;
WNDCLASSEX wc;

ZeroMemory(&wc, sizeof(WNDCLASSEX));

wc.cbSize = sizeof(WNDCLASSEX);
wc.style = CS_HREDRAW | CS_VREDRAW;
wc.lpfnWndProc = (WNDPROC)WindowProc;
wc.hInstance = hInstance;
wc.hCursor = LoadCursor(NULL, IDC_ARROW);
wc.hbrBackground = (HBRUSH)COLOR_WINDOW;
wc.lpszClassName = L"WindowClass";

RegisterClassEx(&wc);

hWnd = CreateWindowEx(NULL,
L"WindowClass",
L"Our First Direct3D Program",
WS_OVERLAPPEDWINDOW,
300, 300,
640, 480,
NULL,
NULL,
hInstance,
NULL);

ShowWindow(hWnd, nCmdShow);

// set up and initialize Direct3D
initD3D(hWnd);

// enter the main loop:

MSG msg;

while(TRUE)
{
DWORD starting_point = GetTickCount();

if (PeekMessage(&msg, NULL, 0, 0, PM_REMOVE))
{
if (msg.message == WM_QUIT)
break;

TranslateMessage(&msg);
DispatchMessage(&msg);
}

render_frame();

while ((GetTickCount() - starting_point) < 25);
}

// clean up DirectX and COM
cleanD3D();

return msg.wParam;
}

// this is the main message handler for the program
LRESULT CALLBACK WindowProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
switch(message)
{
case WM_DESTROY:
{
PostQuitMessage(0);
return 0;
} break;
}

return DefWindowProc (hWnd, message, wParam, lParam);
}

// this function initializes and prepares Direct3D for use
void initD3D(HWND hWnd)
{
d3d = Direct3DCreate9(D3D_SDK_VERSION);    // create the Direct3D interface

D3DPRESENT_PARAMETERS d3dpp;    // create a struct to hold various device information

ZeroMemory(&d3dpp, sizeof(d3dpp));    // clear out the struct for use
d3dpp.Windowed = TRUE;    // program windowed, not fullscreen
d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD;    // discard old frames
d3dpp.hDeviceWindow = hWnd;    // set the window to be used by Direct3D// create a device class using this information and the info from the d3dpp stuct
d3d->CreateDevice(D3DADAPTER_DEFAULT,
D3DDEVTYPE_HAL,
hWnd,
D3DCREATE_SOFTWARE_VERTEXPROCESSING,
&d3dpp,
&d3ddev);

return;
}

// this is the function used to render a single frame
void render_frame(void)
{
d3ddev->Clear(0, NULL, D3DCLEAR_TARGET, D3DCOLOR_XRGB(0, 40, 100), 1.0f, 0);

d3ddev->BeginScene();    // begins the 3D scene

// do 3D rendering here

d3ddev->EndScene();    // ends the 3D scene

d3ddev->Present(NULL, NULL, NULL, NULL);   // displays the created frame on the screen

return;
}

// this is the function that cleans up Direct3D and COM
void cleanD3D(void)
{
d3ddev->Release();    // close and release the 3D device
d3d->Release();    // close and release Direct3D

return;
}