Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
649 views
in Technique[技术] by (71.8m points)

c# - OpenGL/DirectX Hook - Similar to FRAPS

Is it possible to detect what applications are using OpenGL or DirectX similar to what FRAPS does? (Possibly using some form of hook)? I probably won't need to actually draw to the window, I just need to know what processes are doing some form of 3D rendering for the time being.

(Edit:) In case you are not familiar with it, FRAPS is a program that can be used to draw a "Frame-per-second" counter on a 3D application. FRAPS finds all running 3D applications by itself without needing you to specify the process name.

Example of "Frame Per second" counter drawn to external game: enter image description here

See Question&Answers more detail:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Reply

0 votes
by (71.8m points)

Probably the simplest way is to check for the presence of the OpenGL and DirectX core libraries, probably also a good idea to add in the driver OGL dlls in too (such as nvogl), this can be done via EnumProcesses & EnumProcessModulesEx, using p/invoke, this will at least give you a starting set of processes possibly using OGL or DX.

Of course some applications load both of the API's and use only one, or only conditionally use one of the GFX API's (though the latter only occurs with specialized tools and the like), for this, IMO, the best way to check is to perform some form of injection or attaching to the process like a debugger would, then hooking either Present for DX or wglSwapBuffers for OGL.

You might be about to get away with not using a hook by enumerating the GDI handles and looking for the DXGI or OGL render contexts, how viable this is, I don't know.


与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
OGeek|极客中国-欢迎来到极客的世界,一个免费开放的程序员编程交流平台!开放,进步,分享!让技术改变生活,让极客改变未来! Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

...