Direct3D 光照练习

我什么都不想说，就是来一张结果图撒

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代码

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// tWinMain.cpp : Defines the entry point for the application.

#include "windows.h"
#include "tchar.h"

#include "d3d9.h"
#include "d3dx9.h"

#pragma comment(lib, "d3dx9.lib")
#pragma comment(lib, "d3d9.lib")
#pragma comment(lib, "winmm.lib")

#define WNDWIDTH 800
#define WNDHEIGHT 600

// Global Variables:
HWND g_hWnd                                             = NULL;
LPDIRECT3D9 g_pDirect3D                                 = NULL;
LPDIRECT3DDEVICE9 g_pDirect3DDevice                     = NULL;
LPD3DXFONT g_pD3DXFont                                  = NULL;
LPD3DXMESH g_teapot = NULL;
LPD3DXMESH g_cube = NULL;
LPD3DXMESH g_sphere = NULL;
LPD3DXMESH g_torus = NULL;

D3DXMATRIX g_WorldMatrix[4], R;

// Forward declarations of functions included in this code module:
ATOM                MyRegisterClass(HINSTANCE hInstance);
BOOL                InitInstance(HINSTANCE, int);
LRESULT CALLBACK    WndProc(HWND, UINT, WPARAM, LPARAM);

HRESULT Direct3DInit();
VOID Direct3DRender();
VOID Direct3DClean();

bool GameInit();
void MatrixSet();
void LightSet(int nLight);
void GameRender();
void GameClean();

int APIENTRY _tWinMain(_In_ HINSTANCE hInstance,
                     _In_opt_ HINSTANCE hPrevInstance,
                     _In_ LPTSTR    lpCmdLine,
                     _In_ int       nCmdShow)
{
    UNREFERENCED_PARAMETER(hPrevInstance);
    UNREFERENCED_PARAMETER(lpCmdLine);

    // TODO: Place code here.
    MSG msg = {0};

    // Initialize global strings
    MyRegisterClass(hInstance);

    // Perform application initialization:
    if (!InitInstance (hInstance, nCmdShow))
    {
        return FALSE;
    }

    // Main message loop:
    while (msg.message != WM_QUIT)
    {
        if (PeekMessage(&msg, 0, 0, 0, PM_REMOVE))
        {
            TranslateMessage(&msg);
            DispatchMessage(&msg);
        }
        else
        {
            Direct3DRender();
        }
    }

    return (int) msg.wParam;
}

ATOM MyRegisterClass(HINSTANCE hInstance)
{
    WNDCLASSEX wcex;

    wcex.cbSize = sizeof(WNDCLASSEX);

    wcex.style          = CS_HREDRAW | CS_VREDRAW;
    wcex.lpfnWndProc    = WndProc;
    wcex.cbClsExtra     = 0;
    wcex.cbWndExtra     = 0;
    wcex.hInstance      = hInstance;
    wcex.hIcon          = LoadIcon(NULL, MAKEINTRESOURCE(IDI_APPLICATION));
    wcex.hCursor        = LoadCursor(NULL, IDC_ARROW);
    wcex.hbrBackground  = (HBRUSH)(COLOR_WINDOW+1);
    wcex.lpszMenuName   = NULL;
    wcex.lpszClassName  = _T("WndClass");
    wcex.hIconSm = LoadIcon(NULL, MAKEINTRESOURCE(IDI_APPLICATION));

    return RegisterClassEx(&wcex);
}

BOOL InitInstance(HINSTANCE hInstance, int nCmdShow)
{
   g_hWnd = CreateWindow(_T("WndClass"), _T("LearnGame"), WS_OVERLAPPEDWINDOW,
      CW_USEDEFAULT, CW_USEDEFAULT, WNDWIDTH, WNDHEIGHT, NULL, NULL, hInstance, NULL);

   if (!g_hWnd)
   {
      return FALSE;
   }

   if (FAILED(Direct3DInit()))
   {
       return FALSE;
   }

   ShowWindow(g_hWnd, nCmdShow);
   UpdateWindow(g_hWnd);

   return TRUE;
}

LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    switch (message)
    {
    case WM_KEYDOWN:
        if (wParam == VK_ESCAPE)
        {
            Direct3DClean();
            DestroyWindow(hWnd);
        }
        break;
    case WM_DESTROY:
        PostQuitMessage(0);
        break;
    default:
        return DefWindowProc(hWnd, message, wParam, lParam);
    }
    return 0;
}

HRESULT Direct3DInit()
{
    g_pDirect3D = Direct3DCreate9(D3D_SDK_VERSION);
    if (g_pDirect3D == NULL)
    {
        return E_FAIL;
    }

    D3DCAPS9 d3dcaps;
    ZeroMemory(&d3dcaps, sizeof(D3DCAPS9));
    if (FAILED(g_pDirect3D->GetDeviceCaps(D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, &d3dcaps)))
    {
        return E_FAIL;
    }

    int vp = 0;
    if (d3dcaps.DevCaps & D3DDEVCAPS_HWTRANSFORMANDLIGHT)
    {
        vp = D3DCREATE_HARDWARE_VERTEXPROCESSING;
    }
    else
    {
        vp = D3DCREATE_SOFTWARE_VERTEXPROCESSING;
    }

    D3DPRESENT_PARAMETERS d3dpp;
    ZeroMemory(&d3dpp, sizeof(D3DPRESENT_PARAMETERS));
    d3dpp.BackBufferWidth = WNDWIDTH;
    d3dpp.BackBufferHeight = WNDHEIGHT;
    d3dpp.BackBufferFormat = D3DFMT_A8R8G8B8;
    d3dpp.BackBufferCount = 1;
    d3dpp.MultiSampleType = D3DMULTISAMPLE_NONE;
    d3dpp.MultiSampleQuality = 0;
    d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD;
    d3dpp.hDeviceWindow = g_hWnd;
    d3dpp.Windowed = TRUE;
    d3dpp.EnableAutoDepthStencil = TRUE;
    d3dpp.AutoDepthStencilFormat = D3DFMT_D24S8;
    d3dpp.Flags = 0;
    d3dpp.FullScreen_RefreshRateInHz = 0;
    d3dpp.PresentationInterval = D3DPRESENT_INTERVAL_IMMEDIATE;
    if (FAILED(g_pDirect3D->CreateDevice(D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, g_hWnd, vp, &d3dpp, &g_pDirect3DDevice)))
    {
        return E_FAIL;
    }

    if (FAILED(D3DXCreateFont(g_pDirect3DDevice, 24, 0, 0, 1, FALSE, DEFAULT_CHARSET, OUT_DEFAULT_PRECIS, DEFAULT_QUALITY, DEFAULT_PITCH, _T("Arial"), &g_pD3DXFont)))
    {
        return E_FAIL;
    }

    if (!GameInit())
    {
        return E_FAIL;
    }

    return S_OK;
}

VOID Direct3DRender()
{
    g_pDirect3DDevice->Clear(0, NULL, D3DCLEAR_TARGET|D3DCLEAR_ZBUFFER, D3DCOLOR_XRGB(0,0,0), 1.0f, 0);
    if (SUCCEEDED(g_pDirect3DDevice->BeginScene()))
    {
        GameRender();
        g_pDirect3DDevice->EndScene();
        g_pDirect3DDevice->Present(NULL, NULL, NULL, NULL);
    }
}

VOID Direct3DClean()
{
    GameClean();

    g_pD3DXFont->Release();
    g_pD3DXFont = NULL;

    g_pDirect3DDevice->Release();
    g_pDirect3DDevice = NULL;

    g_pDirect3D->Release();
    g_pDirect3D = NULL;
}

bool GameInit()
{
    if (FAILED(D3DXCreateBox(g_pDirect3DDevice, 2.0f, 2.0f, 2.0f, &g_cube, NULL)))
    {
        return false;
    }

    if (FAILED(D3DXCreateTeapot(g_pDirect3DDevice, &g_teapot, NULL)))
    {
        return false;
    }

    if (FAILED(D3DXCreateSphere(g_pDirect3DDevice, 1.5f, 25, 25, &g_sphere, NULL)))
    {
        return false;
    }

    if (FAILED( D3DXCreateTorus(g_pDirect3DDevice, 0.5f, 1.2f, 25, 25, &g_torus, NULL)))
    {
        return false;
    }

    D3DMATERIAL9 mtrl;
    ZeroMemory(&mtrl, sizeof(mtrl));
    mtrl.Ambient = D3DXCOLOR(0.5f, 0.5f, 0.7f, 1.0f);
    mtrl.Diffuse = D3DXCOLOR(0.6f, 0.6f, 0.6f, 1.0f);
    mtrl.Specular = D3DXCOLOR(0.3f, 0.3f, 0.3f, 0.3f);
    mtrl.Emissive = D3DXCOLOR(0.3f, 0.0f, 0.1f, 1.0f);
    g_pDirect3DDevice->SetMaterial(&mtrl);

    LightSet(1);

    g_pDirect3DDevice->SetRenderState(D3DRS_LIGHTING, TRUE);
    g_pDirect3DDevice->SetRenderState(D3DRS_NORMALIZENORMALS, TRUE);
    g_pDirect3DDevice->SetRenderState(D3DRS_SPECULARENABLE, TRUE);
    g_pDirect3DDevice->SetRenderState(D3DRS_CULLMODE, D3DCULL_CCW);
    //g_pDirect3DDevice->SetRenderState(D3DRS_FILLMODE, D3DFILL_WIREFRAME);

    return true;
}

void GameRender()
{
    MatrixSet();

    if (::GetAsyncKeyState(0x31) & 0x8000F)
    {
        g_pDirect3DDevice->SetRenderState(D3DRS_FILLMODE, D3DFILL_WIREFRAME);
    }

    if (::GetAsyncKeyState(0x32) & 0x8000F)
    {
        g_pDirect3DDevice->SetRenderState(D3DRS_FILLMODE, D3DFILL_SOLID);
    }

    if (::GetAsyncKeyState(0x51) & 0x8000f)
    {
        LightSet(1);
    }

    if (::GetAsyncKeyState(0x57) & 0x8000f)
    {
        LightSet(2);
    }

    if (::GetAsyncKeyState(0x45) & 0x8000f)
    {
        LightSet(3);
    }

    D3DXMatrixRotationY(&R, timeGetTime()/1440.0f);
    D3DXMatrixTranslation(&g_WorldMatrix[0], 3.0f, -3.0f, 0.0f);
    g_WorldMatrix[0] = g_WorldMatrix[0] * R;
    g_pDirect3DDevice->SetTransform(D3DTS_WORLD, &g_WorldMatrix[0]);
    g_cube->DrawSubset(0);

    D3DXMatrixTranslation(&g_WorldMatrix[1], -3.0f, -3.0f, 0.0f);
    g_WorldMatrix[1] = g_WorldMatrix[1] * R;
    g_pDirect3DDevice->SetTransform(D3DTS_WORLD, &g_WorldMatrix[1]);
    g_teapot->DrawSubset(0);

    D3DXMatrixTranslation(&g_WorldMatrix[2], 3.0f, 3.0f, 0.0f);
    g_WorldMatrix[2] = g_WorldMatrix[2] * R;
    g_pDirect3DDevice->SetTransform(D3DTS_WORLD, &g_WorldMatrix[2]);
    g_torus->DrawSubset(0);

    D3DXMatrixTranslation(&g_WorldMatrix[3], -3.0f, 3.0f, 0.0f);
    g_WorldMatrix[3] = g_WorldMatrix[3] * R;
    g_pDirect3DDevice->SetTransform(D3DTS_WORLD, &g_WorldMatrix[3]);
    g_sphere->DrawSubset(0);
}

void GameClean()
{
    g_teapot->Release();
    g_teapot = NULL;

    g_cube->Release();
    g_cube = NULL;

    g_sphere->Release();
    g_sphere = NULL;

    g_torus->Release();
    g_torus = NULL;
}

void MatrixSet()
{
    D3DXMATRIX matWorld, Rx, Ry, Rz;
    D3DXMatrixIdentity(&matWorld);
    D3DXMatrixRotationX(&Rx, D3DX_PI * timeGetTime() / 1000.0f);
    D3DXMatrixRotationY(&Ry, D3DX_PI * timeGetTime() / 1000.0f / 2.0f);
    D3DXMatrixRotationZ(&Rz, D3DX_PI * timeGetTime() / 1000.0f / 3.0f);

    matWorld = Rx * Ry * Rz * matWorld;
    g_pDirect3DDevice->SetTransform(D3DTS_WORLD, &matWorld);

    D3DXMATRIX matView;
    D3DXVECTOR3 vEye(0.0f, 0.0f, -20.0f);
    D3DXVECTOR3 vAt(0.0f, 0.0f, 0.0f);
    D3DXVECTOR3 vUp(0.0f, 1.0f, 0.0f);
    D3DXMatrixLookAtLH(&matView, &vEye, &vAt, &vUp);
    g_pDirect3DDevice->SetTransform(D3DTS_VIEW, &matView);

    D3DXMATRIX matProj;
    D3DXMatrixPerspectiveFovLH(&matProj, D3DX_PI / 4.0f, 1.0f, 1.0f, 1000.0f);
    g_pDirect3DDevice->SetTransform(D3DTS_PROJECTION, &matProj);

    D3DVIEWPORT9 vp;
    vp.X = 0;
    vp.Y = 0;
    vp.Width = WNDWIDTH;
    vp.Height = WNDHEIGHT;
    vp.MinZ = 0.0f;
    vp.MaxZ = 1.0f;
    g_pDirect3DDevice->SetViewport(&vp);
}

void LightSet(int nLight)
{
    switch (nLight)
    {
    case 1:
    {
              D3DLIGHT9 light;
              ZeroMemory(&light, sizeof(light));
              light.Type = D3DLIGHT_POINT;
              light.Ambient = D3DXCOLOR(0.6f, 0.6f, 0.6f, 1.0f);
              light.Diffuse = D3DXCOLOR(1.0f, 1.0f, 1.0f, 1.0f);
              light.Specular = D3DXCOLOR(0.3f, 0.3f, 0.3f, 1.0f);
              light.Position = D3DXVECTOR3(0.0f, 100.0f, 0.0f);
              light.Attenuation0 = 1.0f;
              light.Attenuation1 = 0.0f;
              light.Attenuation2 = 0.0f;
              light.Range = 300.0f;

              g_pDirect3DDevice->SetLight(0, &light);
              break;
    }
    case 2:
    {
              D3DLIGHT9 light;
              ZeroMemory(&light, sizeof(light));
              light.Type = D3DLIGHT_DIRECTIONAL;
              light.Ambient = D3DXCOLOR(0.6f, 0.6f, 0.6f, 1.0f);
              light.Diffuse = D3DXCOLOR(1.0f, 1.0f, 1.0f, 1.0f);
              light.Specular = D3DXCOLOR(0.3f, 0.3f, 0.3f, 1.0f);
              light.Direction = D3DXVECTOR3(1.0f, 0.0f, 0.0f);
              g_pDirect3DDevice->SetLight(0, &light);
              break;
    }
    case 3:
    {
              D3DLIGHT9 light;
              ZeroMemory(&light, sizeof(light));
              light.Type = D3DLIGHT_SPOT;
              light.Ambient = D3DXCOLOR(0.6f, 0.6f, 0.6f, 1.0f);
              light.Diffuse = D3DXCOLOR(1.0f, 1.0f, 1.0f, 1.0f);
              light.Specular = D3DXCOLOR(0.3f, 0.3f, 0.3f, 1.0f);
              light.Position = D3DXVECTOR3(100.0f, 100.0f, 100.0f);
              light.Direction = D3DXVECTOR3(-1.0f, -1.0f, -1.0f);
              light.Attenuation0 = 1.0f;
              light.Attenuation1 = 0.0f;
              light.Attenuation2 = 0.0f;
              light.Range = 300.0f;
              light.Falloff = 0.1f;
              light.Phi = D3DX_PI / 3.0f;
              light.Theta = D3DX_PI / 6.0f;
              g_pDirect3DDevice->SetLight(0, &light);
              break;
    }
    }

    g_pDirect3DDevice->LightEnable(0, TRUE);
    g_pDirect3DDevice->SetRenderState(D3DRS_AMBIENT, D3DCOLOR_XRGB(36, 36, 36));
}

这上一个例子里面的GetAsyncKeyState()函数调用错误，这个例子修改了~