directx

I need to figure out how to get the data from D3D textures and surfaces back to system memory. What's the fastest way to do such things and how? Also if I only need one subrect, how can one read back only that portion without having to read back the entire thing to system memory? In short I'm looking for concise descriptions of how to copy the following to system memory : a texture a subset of a texture a surface a subset of a surface a D3DUSAGE_RENDERTARGET texture a subset of a D3DUSAGE_RENDERTARGET texture This is Direct3D 9, but answers about newer versions of D3D would be appreciated too.

I would like to capture the contents of my front or back buffer using DirectX 11 into an array of bytes which I can then use as a texture or as a source for creating a file. I have a swap chain setup, lots of rendering happening and the following code so far - which I make sure to call after the call to Present. ID3D11Texture2D* pSurface; HRESULT hr = m_swapChain->GetBuffer( 0, __uuidof( ID3D11Texture2D ), reinterpret_cast< void** >( &pSurface ) ); if( pSurface ) { const int width = static_cast<int>(m_window->Bounds.Width * m_dpi / 96.0f); const int height = static_cast<int>(m_window->Bounds

I am running a DirectX 11 application on windows 7 and visual studio community 2015 RC. I'm still using functions from the DX SDK. It worked fine on VS2013 but when I switched over I get only the following error: Error LNK2019 unresolved external symbol __vsnprintf referenced in function "long __stdcall StringVPrintfWorkerA(char *,unsigned int,unsigned int *,char const *,char *)" (?StringVPrintfWorkerA@@YGJPADIPAIPBD0@Z) Ancora D:\Moody\Moody\Projects\Projects\Ancora\Ancora\dxerr.lib(dxerra.obj) 1 I only use the DXGetErrorDescriptionA function from the dxerr library and when I comment it out,

Does anyone know how to programmatically capture the sound that is being played (that is, everything that is coming from the sound card, not the input devices such as a microphone). Assuming that you are talking about Windows, there are essentially three ways to do this. The first is to open the audio device's main output as a recording source. This is only possible when the driver supports it, although most do these days. Common names for the virtual device are "What You Hear" or "Wave Out". You will need to use a suitable API (see WaveIn or DirectSound in MSDN) to do the capturing. The

I'm a relatively ok-ish programmer, but my main focus has been in application development with C# so far. I have almost zero experience with game development and 3d engines - I've begun reading up on how 3d Engines work in general, e.g. there was a wonderful guide explaining how to develop a very simple software-based 3D engine in C#. Very helpful, but that pretty much summarizes my whole experience with the topic. Also, I haven't really been working with C++ much so far (even though I'm aware of the basic conceptual differences to C#, and would consider getting up to at least "sufficient"

I want my program to be able to launch any Windows game, and while the user is playing it, intermittently display some text or pictures in some part of the game window. The game may be in windowed or full-screen mode. From what I have been able to figure out from online resources, this could be done using a graphics library that supports overlays and using Windows Hooks to keep track of the target application's window. In this context I have some questions. Will the overlays affect the game's performance? How will hooking the application affect performance? Is there any other way one could