#include <d3d9.h>
LPDIRECT3D9 g_pD3D = NULL;
LPDIRECT3DDEVICE9 g_pD3DDevice = NULL;
LPDIRECT3DVERTEXBUFFER9 g_pVertexBuffer = NULL;
// 顶点buffer
struct CUSTOMVERTEX
{
FLOAT x, y, z, rhw;
// 顶点变换位置.
DWORD colour;
// 顶点颜色.
};
#define D3DFVF_CUSTOMVERTEX (D3DFVF_XYZRHW|D3DFVF_DIFFUSE)
#define SafeRelease(pObject)
if(pObject != NULL) {pObject->Release(); pObject=NULL;}
HRESULT InitialiseD3D(HWND hWnd)
{
//首先创建主要的D3D对象.如果创建成功我们将会得到一个指向IDirect3D9接口的指针
g_pD3D = Direct3DCreate9(D3D_SDK_VERSION);
if(g_pD3D == NULL)
{
return E_FAIL;
}
//获取当前的显示模式
D3DDISPLAYMODE d3ddm;
if(FAILED(g_pD3D->GetAdapterDisplayMode(D3DADAPTER_DEFAULT, &d3ddm)))
{
return E_FAIL;
}
//创建一个结构来保存我们设备的设置
D3DPRESENT_PARAMETERS d3dpp;
ZeroMemory(&d3dpp,
sizeof(d3dpp));
//设置该结构体属性值
//我们想让我们的程序窗口化,并且设置了后缓冲的格式以匹配我们当前的显示模式
d3dpp.Windowed = TRUE;
d3dpp.SwapEffect = D3DSWAPEFFECT_COPY;
d3dpp.PresentationInterval=D3DPRESENT_INTERVAL_DEFAULT;
d3dpp.BackBufferFormat = d3ddm.Format;
//创建一个Direct3D设备.
if(FAILED(g_pD3D->CreateDevice(D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, hWnd,
D3DCREATE_SOFTWARE_VERTEXPROCESSING, &d3dpp, &g_pD3DDevice)))
{
return E_FAIL;
}
return S_OK;
}
HRESULT InitialiseVertexBuffer()
{
VOID* pVertices;
//存储矩形的每一个顶点和它的颜色
CUSTOMVERTEX cvVertices[] =
{
{250.0f, 100.0f, 0.5f, 1.0f, D3DCOLOR_XRGB(255, 0, 0),},
//顶点 1 - 红色 (250, 100)
{400.0f, 350.0f, 0.5f, 1.0f, D3DCOLOR_XRGB(0, 255, 0),},
//顶点 2 - 绿色 (400, 350)
{100.0f, 350.0f, 0.5f, 1.0f, D3DCOLOR_XRGB(0, 0, 255),},
//顶点 3 - 蓝色 (100, 350)
};
//由设备创建顶点缓冲
if(FAILED(g_pD3DDevice->CreateVertexBuffer(3 *
sizeof(CUSTOMVERTEX),
0, D3DFVF_CUSTOMVERTEX,
D3DPOOL_DEFAULT, &g_pVertexBuffer,NULL)))
{
return E_FAIL;
}
//得到一个指向顶点缓冲顶点的指针并锁定顶点缓冲
if(FAILED(g_pVertexBuffer->Lock(0,
sizeof(cvVertices), (
void**)&pVertices, 0)))
{
return E_FAIL;
}
//将我们存储的顶点值拷贝到顶点缓冲
memcpy(pVertices, cvVertices,
sizeof(cvVertices));
//解锁顶点缓冲
g_pVertexBuffer->Unlock();
return S_OK;
}
void Render()
{
if(g_pD3DDevice == NULL)
{
return;
}
//清除后缓冲为黑色
g_pD3DDevice->Clear(0, NULL, D3DCLEAR_TARGET, D3DCOLOR_XRGB(0, 0, 0), 1.0f, 0);
//场景开始
g_pD3DDevice->BeginScene();
//渲染我们的矩形
g_pD3DDevice->SetStreamSource(0, g_pVertexBuffer,0,
sizeof(CUSTOMVERTEX));
g_pD3DDevice->SetFVF(D3DFVF_CUSTOMVERTEX);
g_pD3DDevice->DrawPrimitive(D3DPT_TRIANGLELIST, 0, 1);
//场景结束
g_pD3DDevice->EndScene();
//翻动前后缓冲以便后缓冲中渲染的一切能够显示在屏幕（前缓冲）上。
g_pD3DDevice->Present(NULL, NULL, NULL, NULL);
}
void CleanUp()
{
SafeRelease(g_pVertexBuffer);
SafeRelease(g_pD3DDevice);
SafeRelease(g_pD3D);
}
void GameLoop()
{
//进入游戏循环
MSG msg;
BOOL fMessage;
PeekMessage(&msg, NULL, 0U, 0U, PM_NOREMOVE);
while(msg.message != WM_QUIT)
{
fMessage = PeekMessage(&msg, NULL, 0U, 0U, PM_REMOVE);
if(fMessage)
{
//处理消息
TranslateMessage(&msg);
DispatchMessage(&msg);
}
else
{
//没有要处理的消息,所以渲染当前场景
Render();
}
}
}
//窗口消息处理
LRESULT WINAPI WinProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
switch(msg)
{
case WM_DESTROY:
PostQuitMessage(0);
return 0;
break;
case WM_KEYUP:
switch (wParam)
{
case VK_ESCAPE:
//用户已经按了ESC键，所以退出
DestroyWindow(hWnd);
return 0;
break;
}
break;
}
return DefWindowProc(hWnd, msg, wParam, lParam);
}
//应用程序入口点
INT WINAPI WinMain(HINSTANCE hInst, HINSTANCE, LPSTR, INT)
{
//注册窗口类
WNDCLASSEX wc = {
sizeof(WNDCLASSEX), CS_CLASSDC, WinProc, 0L, 0L,
GetModuleHandle(NULL), NULL, NULL, NULL, NULL,
"DX Project 2", NULL};
RegisterClassEx(&wc);
//创建应用程序的窗口
HWND hWnd = CreateWindow(
"DX Project 2",
"www.andypike.com: Tutorial 2",
WS_OVERLAPPEDWINDOW, 50, 50, 500, 500,
GetDesktopWindow(), NULL, wc.hInstance, NULL);
//初始化 Direct3D
if(SUCCEEDED(InitialiseD3D(hWnd)))
{
//显示我们的窗体
ShowWindow(hWnd, SW_SHOWDEFAULT);
UpdateWindow(hWnd);
//初始化顶点缓冲
if(SUCCEEDED(InitialiseVertexBuffer()))
{
//启动游戏运行:进入游戏循环
GameLoop();
}
}
CleanUp();
UnregisterClass(
"DX Project 2", wc.hInstance);
return 0;
}
