檢視 DirectX各版本差異比較的原始碼

'''DirectX各版本差異比較'''
__toc__

==初始裝置==
{| class="wikitable"
|-
!版本!!用法
|-
|DX9
|
<source lang="cpp">
IDirect3D9* pD3D9;
IDirect3DDevice9* pDevice;

pD3D9 = Direct3DCreate9(D3D_SDK_VERSION);
if (pD3D9 == NULL)
	return false;

D3DPRESENT_PARAMETERS d3dpp;
ZeroMemory(&d3dpp, sizeof(D3DPRESENT_PARAMETERS));

d3dpp.BackBufferWidth = width;
d3dpp.BackBufferHeight = height;

if (isFullScreen) {
	// Full Screen mode
	d3dpp.Windowed                      = false;
	d3dpp.BackBufferFormat              = D3DFMT_A8R8G8B8;
	d3dpp.SwapEffect		    = D3DSWAPEFFECT_DISCARD;
	d3dpp.BackBufferCount               = D3DPRESENT_BACK_BUFFERS_MAX;
	d3dpp.FullScreen_RefreshRateInHz    = D3DPRESENT_RATE_DEFAULT;
	d3dpp.PresentationInterval          = D3DPRESENT_INTERVAL_DEFAULT;
	d3dpp.MultiSampleType               = D3DMULTISAMPLE_NONE;
} else {
	// Window mode
	d3dpp.Windowed       		    = true;
	D3DDISPLAYMODE d3ddm;
	pD3D9->GetAdapterDisplayMode( D3DADAPTER_DEFAULT, &d3ddm );
	d3dpp.BackBufferFormat         	    = d3ddm.Format;
	d3dpp.SwapEffect                    = D3DSWAPEFFECT_DISCARD;
	d3dpp.BackBufferCount               = D3DPRESENT_BACK_BUFFERS_MAX;
	d3dpp.MultiSampleType               = D3DMULTISAMPLE_NONE;
}

DWORD Flags = D3DCREATE_MIXED_VERTEXPROCESSING | D3DCREATE_MULTITHREADED;
HRESULT hr = pD3D9->CreateDevice( D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, hWnd, Flags, &d3dpp, &pDevice );
if (FAILED(hr) || (_pDevice == NULL))
	return false;
</source>
|-
|DX10
|
<source lang="cpp">
ID3D10Device* pDevice;
IDXGISwapChain* pSwapChain;

DXGI_SWAP_CHAIN_DESC scd;
ZeroMemory(&scd, sizeof(scd));

scd.BufferCount = 1;									// one back buffer
scd.BufferDesc.Width = width;
scd.BufferDesc.Height = height;
scd.BufferDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;		// use 32-bit color
if (_vsync_enabled) {
	scd.BufferDesc.RefreshRate.Numerator = 60;
	scd.BufferDesc.RefreshRate.Denominator = 1;
} else {
	scd.BufferDesc.RefreshRate.Numerator = 0;
	scd.BufferDesc.RefreshRate.Denominator = 1;
}
scd.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT;		// how swap chain is to be used
scd.OutputWindow = hWnd;
scd.SampleDesc.Count = 4;								// how many multisamples
scd.SampleDesc.Quality = 0;

if (isFullScreen) {
	scd.Windowed = TRUE;
} else {
	scd.Windowed = FALSE;
}

UINT SDKVersion = D3D10_SDK_VERSION;
D3D_FEATURE_LEVEL FeatureLevels = D3D_FEATURE_LEVEL_10_0;

D3D10_DRIVER_TYPE DriverType = D3D10_DRIVER_TYPE_HARDWARE;
D3D_FEATURE_LEVEL FeatureLevel;

HRESULT hr = D3D10CreateDeviceAndSwapChain(
		NULL,			//[in]   IDXGIAdapter *pAdapter,
		DriverType,		//[in]   D3D10_DRIVER_TYPE DriverType,
		NULL,			//[in]   HMODULE Software,
		0,			//[in]   UINT Flags,
		SDKVersion,		//[in]   UINT SDKVersion,
		&scd,			//[in]   DXGI_SWAP_CHAIN_DESC *pSwapChainDesc,
		&pSwapChain,		//[out]  IDXGISwapChain **ppSwapChain,
		&pDevice		//[out]  ID3D10Device **ppDevice
	);

if (FAILED(hr))
	return false;
</source>
|-
|DX11
|
<source lang="cpp">
ID3D11Device* pDevice;
IDXGISwapChain* pSwapChain;
ID3D11DeviceContext* pDeviceContext;

DXGI_SWAP_CHAIN_DESC scd;
ZeroMemory(&scd, sizeof(scd));

scd.BufferCount = 1;									// one back buffer
scd.BufferDesc.Width = width;
scd.BufferDesc.Height = height;
scd.BufferDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;		// use 32-bit color
if (_vsync_enabled) {
	scd.BufferDesc.RefreshRate.Numerator = 60;
	scd.BufferDesc.RefreshRate.Denominator = 1;
} else {
	scd.BufferDesc.RefreshRate.Numerator = 0;
	scd.BufferDesc.RefreshRate.Denominator = 1;
}
scd.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT;		// how swap chain is to be used
scd.OutputWindow = hWnd;
scd.SampleDesc.Count = 4;
scd.SampleDesc.Quality = 0;


if (isFullScreen) {
	scd.Windowed = TRUE;
} else {
	scd.Windowed = FALSE;
}

UINT SDKVersion = D3D11_SDK_VERSION;
D3D_FEATURE_LEVEL FeatureLevels = D3D_FEATURE_LEVEL_11_0;

D3D_DRIVER_TYPE DriverType = D3D_DRIVER_TYPE_HARDWARE;
D3D_FEATURE_LEVEL FeatureLevel;

HRESULT hr = D3D11CreateDeviceAndSwapChain(
			NULL,				//[in]	IDXGIAdapter *pAdapter
			DriverType,			//[in]	D3D_DRIVER_TYPE DriverType
	                NULL,				//[in]	HMODULE Software
	                0,				//[in]	UINT Flags
	                &FeatureLevels,			//[in]	D3D_FEATURE_LEVEL *pFeatureLevels
	                1,				//[in]	UINT FeatureLevels
	                SDKVersion,			//[in]	UINT SDKVersion
	                &scd,				//[in]	DXGI_SWAP_CHAIN_DESC *pSwapChainDesc
	                &pSwapChain,			//[out]	IDXGISwapChain **ppSwapChain
	                &pDevice,			//[out]	ID3D11Device **ppDevice
	                &FeatureLevel,			//[out]	D3D_FEATURE_LEVEL *pFeatureLevel
			&pDeviceContext);		//[out]	ID3D11DeviceContext **ppDeviceContext

if (FAILED(hr))
	return false;
</source>
|-
|}

==建立DepthBuffer==
{| class="wikitable"
|-
!版本!!用法
|-
|DX9
|
|-
|DX10
|
|-
|DX11
|
|-
|}

==參考資料==
*[http://msdn.microsoft.com/zh-tw/library/windows/apps/dn166864.aspx 將 DirectX 9 功能對應到 DirectX 11 API]
*[http://blogs.msdn.com/b/chuckw/archive/2013/08/21/living-without-d3dx.aspx Living without D3DX - Games for Windows and the DirectX SDK - Site Home - MSDN Blogs]
*[http://blogs.msdn.com/b/chuckw/archive/2014/06/27/directxmesh.aspx DirectXMesh - Games for Windows and the DirectX SDK - Site Home - MSDN Blogs]

[[Category:DirectX]]