g_pSprite->Begin( D3DXSPRITE_ALPHABLEND );

//-----------------------------------------------------------------
//
//    DirectX 3D Sprite Sample.
//
//-----------------------------------------------------------------
#define sqrtf sqrt
#define sinf  sin
#define cosf  cos
#define tanf  tan

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

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



//-----------------------------------------------------------------
//    Grobal Variables.
//-----------------------------------------------------------------
LPDIRECT3D9        g_pD3D            = NULL;
LPDIRECT3DDEVICE9  g_pd3dDevice      = NULL;
LPD3DXSPRITE       g_pSprite         = NULL;
LPDIRECT3DTEXTURE9 g_pBGTexture      = NULL;
LPDIRECT3DTEXTURE9 g_pCharaTexture   = NULL;



//-----------------------------------------------------------------
//    Prototypes.
//-----------------------------------------------------------------
HWND    InitApp( HINSTANCE , int );
BOOL    InitDirect3D( HWND );
BOOL    CleanupDirect3D();
BOOL    RenderDirect3D();
LRESULT CALLBACK WndProc( HWND , UINT , WPARAM , LPARAM );



//-----------------------------------------------------------------
//    Main.
//-----------------------------------------------------------------
int WINAPI WinMain( HINSTANCE hInst , HINSTANCE hPrevinst , LPSTR nCmdLine , int nCmdShow )
{
	MSG msg;
	HWND hWnd;
	
	hWnd = InitApp( hInst , nCmdShow );
	if ( !hWnd ) return FALSE;
	
	if ( !InitDirect3D( hWnd ) ) return FALSE;
	
	while( msg.message != WM_QUIT ){
		if ( PeekMessage( &msg , NULL , 0 , 0 , PM_REMOVE ) ){
			TranslateMessage( &msg );
			DispatchMessage( &msg );
		}else{
			RenderDirect3D();
		}
		Sleep( 1 );
	}
	
	return msg.wParam;
}



//-----------------------------------------------------------------
//    Initialize Application.
//-----------------------------------------------------------------
HWND InitApp( HINSTANCE hInst , int nCmdShow )
{
	WNDCLASS wc;
	HWND hWnd;
	char szClassName[] = "Direct3D Test";
	
	wc.style         = CS_HREDRAW | CS_VREDRAW;
	wc.hInstance     = hInst;
	wc.hCursor       = LoadCursor( NULL , IDC_ARROW );
	wc.hIcon         = LoadIcon( NULL , IDI_APPLICATION );
	wc.hbrBackground = (HBRUSH)GetStockObject( WHITE_BRUSH );
	wc.lpszClassName = szClassName;
	wc.lpszMenuName  = NULL;
	wc.lpfnWndProc   = WndProc;
	wc.cbWndExtra    = 0;
	wc.cbClsExtra    = 0;
	if ( !RegisterClass( &wc ) ) return FALSE;
	
	hWnd = CreateWindow( szClassName , "Direct3D Test" , WS_OVERLAPPEDWINDOW ,
						CW_USEDEFAULT , CW_USEDEFAULT , 640 , 480,
						NULL , NULL , hInst , NULL );
	if ( !hWnd ) return FALSE;
	
	ShowWindow( hWnd , nCmdShow );
	UpdateWindow( hWnd );
	
	return hWnd;
}



//-----------------------------------------------------------------
//    Initialize Direct3D.
//-----------------------------------------------------------------
BOOL InitDirect3D( HWND hWnd )
{
	D3DPRESENT_PARAMETERS d3dpp;
	HRESULT hr;
	
	if ( NULL == ( g_pD3D = Direct3DCreate9( D3D_SDK_VERSION ) ) ){
		MessageBox( hWnd , "Can't create Direct3D." , "Error" , MB_OK );
		return FALSE;
	}
	ZeroMemory( &d3dpp , sizeof( d3dpp ) );
	d3dpp.Windowed         = TRUE;
	d3dpp.SwapEffect       = D3DSWAPEFFECT_DISCARD;
	d3dpp.BackBufferFormat = D3DFMT_UNKNOWN;
	
	hr = g_pD3D->CreateDevice( D3DADAPTER_DEFAULT , D3DDEVTYPE_HAL , hWnd ,
	                           D3DCREATE_SOFTWARE_VERTEXPROCESSING ,
	                           &d3dpp , &g_pd3dDevice );
	if ( FAILED( hr ) ){
		MessageBox( hWnd , "Can't create device." , "Error" , MB_OK );
		return FALSE;
	}
	
	D3DXCreateSprite( g_pd3dDevice , &g_pSprite );
	D3DXCreateTextureFromFile( g_pd3dDevice , "sample0010_1.bmp" , &g_pBGTexture );
	D3DXCreateTextureFromFile( g_pd3dDevice , "sample0010.dds" ,   &g_pCharaTexture );
	
	return TRUE;
}



//-----------------------------------------------------------------
//    Cleanup Direct3D.
//-----------------------------------------------------------------
BOOL CleanupDirect3D()
{
	if ( g_pBGTexture != NULL )
		g_pBGTexture->Release();
	
	if ( g_pCharaTexture != NULL )
		g_pCharaTexture->Release();
	
	if ( g_pSprite != NULL )
		g_pSprite->Release();
	
	if ( g_pd3dDevice != NULL )
		g_pd3dDevice->Release();
	
	if ( g_pD3D != NULL )
		g_pD3D->Release();
	
	return TRUE;
}



//-----------------------------------------------------------------
//    Window Proc.
//-----------------------------------------------------------------
LRESULT CALLBACK WndProc( HWND hWnd , UINT msg , WPARAM wp , LPARAM lp )
{
	switch( msg ){
		case WM_DESTROY:
			CleanupDirect3D();
			PostQuitMessage( 0 );
			break;
		default:
			return DefWindowProc( hWnd , msg , wp , lp );
	}
	
	return 0L;
}



//-----------------------------------------------------------------
//    Render Direct3D.
//-----------------------------------------------------------------
BOOL RenderDirect3D()
{
	RECT rc;
	D3DXVECTOR3 center , position;
	
	g_pd3dDevice->Clear( 0 , NULL , D3DCLEAR_TARGET ,
	                     D3DCOLOR_XRGB( 0 , 0 , 0 ) , 1.0f , 0 );
	
	g_pd3dDevice->BeginScene();
	
	g_pSprite->Begin( D3DXSPRITE_ALPHABLEND );
	
	rc.left    = 0;
	rc.top     = 0;
	rc.right   = 256;
	rc.bottom  = 256;
	center.x   = 0;
	center.y   = 0;
	position.x = 20;
	position.y = 10;
	
	g_pSprite->Draw( g_pBGTexture , &rc , &center , &position , 0xFFFFFFFF );
	
	rc.left    = 0;
	rc.top     = 0;
	rc.right   = 128;
	rc.bottom  = 128;
	center.x   = 0;
	center.y   = 0;
	position.x = 84;
	position.y = 74;
	
	g_pSprite->Draw( g_pCharaTexture , &rc , &center , &position , 0xFFFFFFFF );
	
	g_pSprite->End();
	
	g_pd3dDevice->EndScene();
	
	g_pd3dDevice->Present( NULL , NULL , NULL , NULL );
	
	return TRUE;
}