Directx

附件 未命名.png (93.87 KB)

2014-2-20 12:15 AM

未命名.png (93.87 KB)

2014-2-20 12:15 AM

引用:原帖由 Susan﹏汪汪 於 2014-2-20 12:15 AM 发表
建立一个Directx环境....两个字...麻烦

最麻烦系一个Direct2D需要一个Device Context
而一个Direct2D Device Context需要一个Direct2D Device
而一个Direct2D Device需要一个DXGI Device
使用一个DXGI Device需 ...

引用:原帖由 sinson123 於 2014-2-20 11:43 AM 发表
唔系佢都唔整个XNA出黎
就好似全部用Win32 API写个GUI程式出黎，所以DX主力都系C++

引用:原帖由 xianrenb 於 2014-2-20 01:12 PM 发表


我无用过 DirectX 。
其实 SDL + OpenGL ES 是否更好的选择？
上述的我都未用过，不过好像它们都是 cross-platform 的。
http://en.wikipedia.org/wiki/Simple_DirectMedia_Layer
http://en.wikipedia.org/w ...

引用:原帖由 xianrenb 於 2014-2-20 01:12 PM 发表


我无用过 DirectX 。
其实 SDL + OpenGL ES 是否更好的选择？
上述的我都未用过，不过好像它们都是 cross-platform 的。
http://en.wikipedia.org/wiki/Simple_DirectMedia_Layer
http://en.wikipedia.org/w ...

引用:原帖由 bread.doves. 於 2014-2-21 11:23 PM 发表
以前看过一本 dx 的书, 单是 lib 的每一个function 的 arg 已经几行... 同 win API 有得挥 (烦) ... 如果单是写 game, 一定用 unity 呢 d game engine, 方便快捷, 简单, 仲要 cross platform (ios, android, pc)

复制内容到剪贴板代码:struct DXDevice
{
D3D_FEATURE_LEVEL featureLevel;
IDXGIDevice1 * pDXGIDevice;
ID2D1Device * pd2dDevice;
ID3D11Device * pd3dDevice;
ID2D1DeviceContext * pd2dDeviceContext;
ID3D11DeviceContext * pd3dDeviceContext;

DXDevice( void );
~DXDevice( void );
};

DXDevice:XDevice( void )
{

UINT creationFlags = D3D11_CREATE_DEVICE_BGRA_SUPPORT;
D3D_FEATURE_LEVEL featureLevels[] =
{
D3D_FEATURE_LEVEL_11_1,
D3D_FEATURE_LEVEL_11_0,
D3D_FEATURE_LEVEL_10_1,
D3D_FEATURE_LEVEL_10_0,
D3D_FEATURE_LEVEL_9_3,
D3D_FEATURE_LEVEL_9_2,
D3D_FEATURE_LEVEL_9_1
};

HResult( D3D11CreateDevice(
nullptr, // specify null to use the default adapter
D3D_DRIVER_TYPE_HARDWARE,
0,
creationFlags, // optionally set debug and Direct2D compatibility flags
featureLevels, // list of feature levels this app can support
ARRAYSIZE(featureLevels), // number of possible feature levels
D3D11_SDK_VERSION,
&this->pd3dDevice, // returns the Direct3D device created
&this->featureLevel, // returns feature level of device created
&this->pd3dDeviceContext // returns the device immediate context
) );

HResult( this->pd3dDevice->QueryInterface(__uuidof(IDXGIDevice), (void **)&this->pDXGIDevice) );
HResult( D2D1CreateDevice(this->pDXGIDevice, nullptr, &this->pd2dDevice) );
HResult( this->pd2dDevice->CreateDeviceContext(D2D1_DEVICE_CONTEXT_OPTIONS_NONE, &this->pd2dDeviceContext) );

}

DXDevice::~DXDevice( void )
{
SafeRelease(&this->pd2dDeviceContext);
SafeRelease(&this->pd3dDeviceContext);
SafeRelease(&this->pDXGIDevice);
SafeRelease(&this->pd2dDevice);
SafeRelease(&this->pd3dDevice);
}

复制内容到剪贴板代码:DXGI_SWAP_CHAIN_DESC1 swapChainDesc = {0};
swapChainDesc.Width = 0; // use automatic sizing
swapChainDesc.Height = 0;
swapChainDesc.Format = DXGI_FORMAT_B8G8R8A8_UNORM; // this is the most common swapchain format
swapChainDesc.Stereo = false;
swapChainDesc.SampleDesc.Count = 1; // don't use multi-sampling
swapChainDesc.SampleDesc.Quality = 0;
swapChainDesc.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT;
swapChainDesc.BufferCount = 2; // use double buffering to enable flip
swapChainDesc.Scaling = DXGI_SCALING_NONE;
swapChainDesc.SwapEffect = DXGI_SWAP_EFFECT_FLIP_SEQUENTIAL; // all apps must use this SwapEffect
swapChainDesc.Flags = 0;

IDXGIAdapter * pDXGIAdapter = nullptr;
HResult( DXDevice.pDXGIDevice->GetAdapter(&pDXGIAdapter) );

IDXGIFactory2 * pDXGIFactory = nullptr;
HResult( pDXGIAdapter->GetParent(__uuidof(IDXGIFactory2), (LPVOID*)&pDXGIFactory) );
SafeRelease(&pDXGIAdapter);

HResult( pDXGIFactory->CreateSwapChainForHwnd(
DXDevice.pd3dDevice,
hWnd,
&swapChainDesc,
nullptr,
nullptr,
&swapChain
) );
SafeRelease(&pDXGIFactory);

HResult( DXDevice.pDXGIDevice->SetMaximumFrameLatency(1) );

D2D1_BITMAP_PROPERTIES1 bitmapProperties = D2D1::BitmapProperties1(
D2D1_BITMAP_OPTIONS_TARGET | D2D1_BITMAP_OPTIONS_CANNOT_DRAW,
D2D1:ixelFormat(DXGI_FORMAT_B8G8R8A8_UNORM, D2D1_ALPHA_MODE_IGNORE)
);

IDXGISurface * pDXGIBackBuffer = nullptr;
HResult( swapChain->GetBuffer(0, IID_PPV_ARGS(&pDXGIBackBuffer)) );

ID2D1Bitmap1 * pd2dTargetBitmap = nullptr;
HResult( DXDevice.pd2dDeviceContext->CreateBitmapFromDxgiSurface(
pDXGIBackBuffer,
&bitmapProperties,
&pd2dTargetBitmap
) );
SafeRelease(&pDXGIBackBuffer);

DXDevice.pd2dDeviceContext->SetTarget(pd2dTargetBitmap);
SafeRelease(&pd2dTargetBitmap);

HResult( DWriteCreateFactory(
DWRITE_FACTORY_TYPE_SHARED,
__uuidof(IDWriteFactory),
reinterpret_cast<IUnknown**>(&pDWriteFactory)
) );

复制内容到剪贴板代码:DXDevice DXDevice;
IDXGISwapChain1 * swapChain;
IDWriteFactory * pDWriteFactory;