2. D3DBlankWindow: Add Perspective Projection Matrix

#include<d3d9.h>
#include<d3dx9.h>

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

#define WINDOW_CLASS    "UGPDX"
#define WINDOW_NAME     "Template"
#define WINDOW_WIDTH    640
#define WINDOW_HEIGHT   480

// Function Prototypes...
bool InitializeD3D(HWND hWnd, bool fullscreen);
bool InitializeObjects();
void RenderScene();
void Shutdown();


// Direct3D object and device.
LPDIRECT3D9 g_D3D = NULL;
LPDIRECT3DDEVICE9 g_D3DDevice = NULL;

// Matrices.
D3DXMATRIX g_projection;
D3DXMATRIX g_ViewMatrix;
D3DXMATRIX g_WorldMatrix;


LRESULT WINAPI MsgProc(HWND hWnd, UINT msg, WPARAM wp, LPARAM lp)
{
switch(msg)
    {
case WM_DESTROY:
        PostQuitMessage(0);
return 0;
break;

case WM_KEYUP:
if(wp == VK_ESCAPE) PostQuitMessage(0);
break;
    }

return DefWindowProc(hWnd, msg, wp, lp);
}


int WINAPI WinMain(HINSTANCE hInst, HINSTANCE ph, LPSTR cmd, int s)
{
// Register the window class
    WNDCLASSEX wc = { sizeof(WNDCLASSEX), CS_CLASSDC, MsgProc, 0L, 0L,
        GetModuleHandle(NULL), NULL, NULL, NULL, NULL,
        WINDOW_CLASS, NULL };

    RegisterClassEx(&wc);

// Create the application's window
    HWND hWnd = CreateWindow(WINDOW_CLASS, WINDOW_NAME,
        WS_OVERLAPPEDWINDOW, 100, 100, WINDOW_WIDTH, WINDOW_HEIGHT,
        GetDesktopWindow(), NULL, wc.hInstance, NULL);

// Initialize Direct3D
    if(InitializeD3D(hWnd, false))
    {
// Show the window
        ShowWindow(hWnd, SW_SHOWDEFAULT);
        UpdateWindow(hWnd);

// Enter the message loop
        MSG msg;
        ZeroMemory(&msg, sizeof(msg));

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

// Release any and all resources.
    Shutdown();

// Unregister our window.
    UnregisterClass(WINDOW_CLASS, wc.hInstance);
return 0;
}


bool InitializeD3D(HWND hWnd, bool fullscreen)
{
    D3DDISPLAYMODE displayMode;

// Create the D3D object.
    g_D3D = Direct3DCreate9(D3D_SDK_VERSION);
if(g_D3D == NULL) return false;

// Get the desktop display mode.
    if(FAILED(g_D3D->GetAdapterDisplayMode(D3DADAPTER_DEFAULT,
&displayMode))) return false;

// Set up the structure used to create the D3DDevice
    D3DPRESENT_PARAMETERS d3dpp;
    ZeroMemory(&d3dpp, sizeof(d3dpp));

if(fullscreen)
    {
        d3dpp.Windowed = FALSE;
        d3dpp.BackBufferWidth = WINDOW_WIDTH;
        d3dpp.BackBufferHeight = WINDOW_HEIGHT;
    }
else
        d3dpp.Windowed = TRUE;
    d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD;
    d3dpp.BackBufferFormat = displayMode.Format;

// Create the D3DDevice
    if(FAILED(g_D3D->CreateDevice(D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL,
        hWnd, D3DCREATE_HARDWARE_VERTEXPROCESSING | D3DCREATE_PUREDEVICE,
&d3dpp, &g_D3DDevice))) return false;


// Initialize any objects we will be displaying.
    if(!InitializeObjects()) return false;

return true;
}


bool InitializeObjects()
{
// Set the projection matrix.
    D3DXMatrixPerspectiveFovLH(&g_projection, 45.0f,
        WINDOW_WIDTH/WINDOW_HEIGHT, 0.1f, 1000.0f);

    g_D3DDevice->SetTransform(D3DTS_PROJECTION, &g_projection);

// Set default rendering states.
    g_D3DDevice->SetRenderState(D3DRS_LIGHTING, FALSE);

// Define camera information.
    D3DXVECTOR3 cameraPos(0.0f, 0.0f, -1.0f);
    D3DXVECTOR3 lookAtPos(0.0f, 0.0f, 0.0f);
    D3DXVECTOR3 upDir(0.0f, 1.0f, 0.0f);

// Build view matrix.
    D3DXMatrixLookAtLH(&g_ViewMatrix, &cameraPos,
&lookAtPos, &upDir);

return true;
}


void RenderScene()
{
// Clear the backbuffer.
    g_D3DDevice->Clear(0, NULL, D3DCLEAR_TARGET,
        D3DCOLOR_XRGB(0,0,0), 1.0f, 0);

// Begin the scene.  Start rendering.
    g_D3DDevice->BeginScene();

// Apply the view (camera).
    g_D3DDevice->SetTransform(D3DTS_VIEW, &g_ViewMatrix);

// End the scene.  Stop rendering.
    g_D3DDevice->EndScene();

// Display the scene.
    g_D3DDevice->Present(NULL, NULL, NULL, NULL);
}


void Shutdown()
{
// Release all resources.
    if(g_D3DDevice != NULL) g_D3DDevice->Release();
if(g_D3D != NULL) g_D3D->Release();

    g_D3DDevice = NULL;
    g_D3D = NULL;
}