光照设置

	//开启光照，默认为开启状态
	Device->SetRenderState(D3DRS_LIGHTING, true);

 　　　　//创建材质，设置材质
	D3DMATERIAL9 mtrl;
	mtrl.Ambient = d3d::WHITE;
	mtrl.Diffuse = d3d::WHITE;
	mtrl.Specular = d3d::WHITE;
	mtrl.Emissive = d3d::BLACK;
	mtrl.Power = 5.0f;

	Device->SetMaterial(&mtrl);

	//创建光照
	D3DLIGHT9 dir;
	::ZeroMemory(&dir, sizeof(dir));
	dir.Type = D3DLIGHT_DIRECTIONAL;
	dir.Diffuse = d3d::WHITE;
	dir.Specular = d3d::WHITE * 0.6f;
	dir.Ambient = d3d::WHITE * 0.3f;
	dir.Direction = D3DXVECTOR3(1.0f, 0.0f, 0.0f);

	//注册光源，开启光源
	Device->SetLight(0, &dir);
	Device->LightEnable(0, true);
	
	//开启镜面光效果，开启规格化法向量
	Device->SetRenderState(D3DRS_NORMALIZENORMALS, true);
	Device->SetRenderState(D3DRS_SPECULARENABLE, true);