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IDirect3D8* Direct3D ;
IDirect3DDevice8* Device ;
IDirect3DTexture8* Texture ;
HRESULT Error ;

// Vertex FVF
const DWORD D3DFVF_VERTEX = D3DFVF_XYZ | D3DFVF_DIFFUSE | D3DFVF_TEX1 ;
Vertex QuadFace[4] ;

LRESULT CALLBACK WndProc( HWND, UINT, WPARAM, LPARAM ) ;

BOOL Direct3DInit( )
{
	// Create D3D
	Direct3D = Direct3DCreate8( D3D_SDK_VERSION ) ;
	if( Direct3D == NULL )
		return FALSE ;

	// structure to hold infos on the display mode
	D3DDISPLAYMODE displayMode ;
	Error = Direct3D->GetAdapterDisplayMode( D3DADAPTER_DEFAULT, &displayMode ) ;
	if( FAILED( Error ) )
		return FALSE ;

	// Used to explain to Direct3D how it will present things on the screen
	D3DPRESENT_PARAMETERS presentParameters ;
	ZeroMemory( &presentParameters, sizeof( D3DPRESENT_PARAMETERS ) ) ;

	presentParameters.Windowed = TRUE ; // Not fullscreen
	presentParameters.SwapEffect = D3DSWAPEFFECT_DISCARD ;
	presentParameters.BackBufferFormat = displayMode.Format ;
	presentParameters.BackBufferHeight = displayMode.Height ;
	presentParameters.BackBufferWidth = displayMode.Width ;

	// Create the device
	Error = Direct3D->CreateDevice( D3DADAPTER_DEFAULT,		// Default display adapter
									D3DDEVTYPE_HAL,			// Hardware acceleration
									WindowInfos::Window,
									D3DCREATE_SOFTWARE_VERTEXPROCESSING,
									&presentParameters,
									&Device ) ;
	if( FAILED( Error ) )
		return FALSE ;

	D3DXMATRIX Matrix ;
	D3DXMatrixPerspectiveFovLH( &Matrix, 
								D3DX_PI/6, // 60°
								WindowInfos::Width / WindowInfos::Height,
								1.0,
								100.0 ) ;
	Device->SetTransform( D3DTS_PROJECTION, &( D3DMATRIX )Matrix ) ;
	D3DXMatrixIdentity( &Matrix ) ;
	Device->SetTransform( D3DTS_WORLD, &( D3DMATRIX )Matrix ) ;
	D3DXMatrixTranslation( &Matrix, 0.0, 0.0, 20.0 ) ;
	Device->SetTransform( D3DTS_VIEW, &( D3DMATRIX )Matrix ) ;

	QuadFace[0].Create( 0, 0, 0, 1, 0, 0, 0, 1 ) ;
	QuadFace[1].Create( 0, 1, 0, 0, 1, 0, 1, 1 ) ;
	QuadFace[3].Create( 2, 1, 0, 0, 0, 1, 1, 0 ) ;
	QuadFace[2].Create( 2, 0, 0, 1, 1, 0, 0, 0 ) ;

	// Blender between the vertex color and the texture color
	Device->SetTextureStageState( 0, D3DTSS_COLOROP, D3DTOP_MODULATE ) ;
	Device->SetTextureStageState( 0, D3DTSS_COLORARG1, D3DTA_TEXTURE ) ;
	Device->SetTextureStageState( 0, D3DTSS_COLORARG2, D3DTA_DIFFUSE ) ;

	// Turn off the alpha channel
	Device->SetTextureStageState( 0, D3DTSS_ALPHAOP, D3DTOP_DISABLE ) ;

	// We don't need lighting
	Device->SetRenderState( D3DRS_LIGHTING, FALSE ) ;
	D3DXCreateTextureFromFile( Device, "C:\\Documents and Settings\\Alex\\Mes documents\\signature.bmp", &Texture ) ;
	return TRUE ;
}

void DrawScene( )
{
	// Clear the screen
	Device->Clear( 0, NULL, D3DCLEAR_TARGET, D3DCOLOR_XRGB( 0, 0, 0 ), 1.0f, 0 ) ;

	// Make it possible to draw stuff
	Device->BeginScene( ) ;

		Device->SetVertexShader( D3DFVF_VERTEX ) ;
		Device->SetTexture( 0, Texture ) ; // 0th texture
		Device->DrawPrimitiveUP( D3DPT_TRIANGLESTRIP, 2, QuadFace, sizeof( Vertex ) ) ;

	// Clean the stuff needed by BeginScene( )
	Device->EndScene( ) ;

	// Put the back buffer onto the screen
	Device->Present( NULL, NULL, NULL, NULL ) ;
}