D3D9利用顶点缓冲区绘制三角形

#include <d3d9.h>
//附加依赖项 d3d9.lib

//利用顶点缓冲区绘制三角形
const TCHAR szClassName[MAX_PATH] = TEXT("冒险岛class");
const TCHAR szTilteName[MAX_PATH] = TEXT("冒险岛");


LPDIRECT3D9 g_pD3D = NULL;				  //Direct3D对象
LPDIRECT3DDEVICE9 g_pd3dDevice = NULL;  //Direct3D设备对象
LPDIRECT3DVERTEXBUFFER9 g_pVB = NULL;	//顶点缓冲区对象

struct CUSTOMVERTEX
{
	FLOAT x, y,z, rhw;
	//
	DWORD color;
};

#define D3DFVF_CUSTOMVERTEX (D3DFVF_XYZRHW| D3DFVF_DIFFUSE)


//顶点格式

HRESULT Init3D(HWND hwnd)
{
	if(NULL ==(g_pD3D = Direct3DCreate9(D3D_SDK_VERSION)))
		return E_FAIL;

	D3DPRESENT_PARAMETERS d3dpp;
	ZeroMemory(&d3dpp, sizeof(d3dpp));
	d3dpp.Windowed = TRUE; //是否窗口化
	d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD;
	d3dpp.BackBufferFormat = D3DFMT_UNKNOWN;

	if (FAILED(g_pD3D->CreateDevice(D3DADAPTER_DEFAULT,
		D3DDEVTYPE_HAL, hwnd,
		D3DCREATE_SOFTWARE_VERTEXPROCESSING,
		&d3dpp, &g_pd3dDevice)))
		return E_FAIL;

	
	return S_OK;

}

HRESULT InitVB()
{
	CUSTOMVERTEX vertices[] =
	{
		{100.0f, 400.0f, 0.5f, 1.0f, 0xffff0000},
		{300.0f, 50.f, 0.5f, 1.0f, 0xff00ff00},
		{500.0f, 400.0f, 0.5f, 1.0f, 0xff0000ff},
	};

	HRESULT hr = g_pd3dDevice->CreateVertexBuffer(sizeof(CUSTOMVERTEX) * 3,
		0, D3DFVF_CUSTOMVERTEX, D3DPOOL_DEFAULT, &g_pVB, NULL);

	if (FAILED(hr))
		return E_FAIL;

	VOID* pVertices;
	if (FAILED(g_pVB->Lock(0, sizeof(vertices), (void**)&pVertices, 0)))
		return E_FAIL;
	memcpy(pVertices, vertices, sizeof(vertices));
	g_pVB->Unlock();

	return S_OK;
	
}
VOID Cleanup()
{
	//释放内存
	if (g_pd3dDevice != NULL)
		g_pd3dDevice->Release();

	if (g_pD3D != NULL)
		g_pD3D->Release();

	if (g_pVB != NULL)
		g_pVB->Release();
}

VOID Render()
{
	//清空后台缓冲区
	g_pd3dDevice->Clear(0, NULL, D3DCLEAR_TARGET, D3DCOLOR_XRGB(45, 50, 170), 1.0f, 0);
	
	//开始在后台缓存区绘制图形
	if (SUCCEEDED(g_pd3dDevice->BeginScene()))
	{

		//在后台缓冲区绘制图形
		g_pd3dDevice->SetStreamSource(0, g_pVB, 0, sizeof(CUSTOMVERTEX));
		g_pd3dDevice->SetFVF(D3DFVF_CUSTOMVERTEX);
		g_pd3dDevice->DrawPrimitive(D3DPT_TRIANGLELIST, 0, 1);
		g_pd3dDevice->EndScene();
		//在后台缓冲区结束绘制图形
	}
		
	//将在后台缓冲区绘制的图形提交到前台缓冲区显示
	g_pd3dDevice->Present(NULL, NULL, NULL, NULL);

}

LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
	switch (msg)
	{
	case WM_DESTROY:
		Cleanup();
		PostQuitMessage(0);
		return 0;
	case WM_PAINT:
		Render();
		ValidateRect(hwnd, NULL);
		return 0;
	}

	return DefWindowProc(hwnd, msg, wParam, lParam);
}
int WINAPI wWinMain(HINSTANCE hInstance,
	HINSTANCE hPrevInstance,
	LPTSTR lpCmdLine,
	int nCmdShow)
{
	WNDCLASSEX wc;
	wc.cbSize = sizeof(WNDCLASSEX);
	wc.style = CS_CLASSDC;
	wc.lpfnWndProc = WndProc;
	wc.cbClsExtra = 0;
	wc.cbWndExtra = 0;
	wc.hInstance = GetModuleHandle(NULL);
	wc.hIcon = NULL;
	wc.hCursor = NULL;
	wc.hbrBackground = NULL;
	wc.lpszMenuName = NULL;
	wc.lpszClassName = szClassName;
	wc.hIconSm = NULL;
	//注册窗口类
	if (!RegisterClassEx(&wc))
		MessageBox(NULL, TEXT("注册窗口类失败"), NULL, NULL);
	//创建窗口
	HWND hwnd = CreateWindow(szClassName, szTilteName,
		WS_OVERLAPPEDWINDOW,
		200, 100, 600, 500,
		NULL, NULL, hInstance, 0);

	if (SUCCEEDED(Init3D(hwnd)))
	{
		if (SUCCEEDED(InitVB()))
		{
			ShowWindow(hwnd, SW_SHOWDEFAULT);
			UpdateWindow(hwnd);

			MSG msg;
			ZeroMemory(&msg, sizeof(msg));

			while (msg.message != WM_QUIT)
			{
				if (PeekMessage(&msg, NULL, 0, 0, PM_REMOVE)) {
					TranslateMessage(&msg);
					DispatchMessage(&msg);
				}

				else
				{
					Render();
				}
			}
		}
	
	}
	
	UnregisterClass(szClassName, hInstance);

	return 0;
}

抄的代码
效果图

记得在此处添加附加依赖项