//=============================================================================
//?Desc:?紋理影射基礎
//=============================================================================

#include?

//-----------------------------------------------------------------------------
//?Desc:?全局變量
//-----------------------------------------------------------------------------
LPDIRECT3D9?????????????g_pD3D???????=?NULL;????//Direct3D對象
LPDIRECT3DDEVICE9???????g_pd3dDevice?=?NULL;????//Direct3D設備對象
LPDIRECT3DVERTEXBUFFER9?g_pVB????????=?NULL;????//頂點緩沖區對象
LPDIRECT3DTEXTURE9??????g_pTexture???=?NULL;????//紋理對象


//-----------------------------------------------------------------------------
//?Desc:?頂點結構
//-----------------------------------------------------------------------------
struct?CUSTOMVERTEX
{
	FLOAT?x?y?z;????//頂點位置??
	FLOAT?uv?;		??//頂點紋理坐標
};
#define?D3DFVF_CUSTOMVERTEX???（D3DFVF_XYZ|D3DFVF_TEX1）


//-----------------------------------------------------------------------------
//?Desc:?設置變換矩陣
//-----------------------------------------------------------------------------
VOID?SetupMatrices（）
{
????//創建并設置世界矩陣
????D3DXMATRIXA16?matWorld;
????D3DXMatrixIdentity（?&matWorld?）;
????g_pd3dDevice->SetTransform（?D3DTS_WORLD?&matWorld?）;

	//創建并設置觀察矩陣
????D3DXVECTOR3?vEyePt（?0.0f?0.0f?-10?）;
????D3DXVECTOR3?vLookatPt（?0.0f?0.0f?0.0f?）;
????D3DXVECTOR3?vUpVec（?0.0f?1.0f?0.0f?）;
????D3DXMATRIXA16?matView;
????D3DXMatrixLookAtLH（?&matView?&vEyePt?&vLookatPt?&vUpVec?）;
????g_pd3dDevice->SetTransform（?D3DTS_VIEW?&matView?）;

	//創建并設置投影矩陣
????D3DXMATRIXA16?matProj;
????D3DXMatrixPerspectiveFovLH（?&matProj?D3DX_PI/4?1.0f?1.0f?100.0f?）;
????g_pd3dDevice->SetTransform（?D3DTS_PROJECTION?&matProj?）;
}


//-----------------------------------------------------------------------------
//?Desc:?初始化Direct3D
//-----------------------------------------------------------------------------
HRESULT?InitD3D（?HWND?hWnd?）
{
	//創建Direct3D對象?該對象用于創建Direct3D設備對象
????if（?NULL?==?（?g_pD3D?=?Direct3DCreate9（?D3D_SDK_VERSION?）?）?）
????????return?E_FAIL;

	//設置D3DPRESENT_PARAMETERS結構?準備創建Direct3D設備對象
????D3DPRESENT_PARAMETERS?d3dpp;
????ZeroMemory（?&d3dpp?sizeof（d3dpp）?）;
????d3dpp.Windowed?=?TRUE;
????d3dpp.SwapEffect?=?D3DSWAPEFFECT_DISCARD;
????d3dpp.BackBufferFormat?=?D3DFMT_UNKNOWN;

	//創建Direct3D設備對象
????if（?FAILED（?g_pD3D->CreateDevice（?D3DADAPTER_DEFAULT?D3DDEVTYPE_HAL?hWnd
??????????????????????????????????????D3DCREATE_SOFTWARE_VERTEXPROCESSING
??????????????????????????????????????&d3dpp?&g_pd3dDevice?）?）?）
????{
????????return?E_FAIL;
????}

	//禁用照明效果
	g_pd3dDevice->SetRenderState（?D3DRS_LIGHTING?FALSE?）;?

	//設置變換矩陣
	SetupMatrices（）;
	
????return?S_OK;
}


//-----------------------------------------------------------------------------
//?Desc:?創建場景圖形
//-----------------------------------------------------------------------------
HRESULT?InitGriphics（）
{