0

I would like to do some real-time image(?)/video(?)/screen(?) processing to everything the user sees. I am not very familiar with DirectX, so I am unsure if DirectDraw (recommended by chatGPT) allows me to do so by manipulating the screen buffer.

Are there any resources/articles I could refer to for more info on how to do this?

Does DirectX offer this functionality?

I have tried using winAPI's SetPixel (doesn't work due to other apps drawing on top) and layered windows, but I'm not a big fan of it. I need something that allows me to read and write to all the pixels that the user sees.

Kew Yu Jun
  • 3
  • 2
  • 1
    DirectDraw is the old thing you don't want to invest in (https://learn.microsoft.com/en-us/windows/win32/directdraw/directdraw). GDI's SetPixel would be slow as a dog for "real-time XXX processing". DirectX/DXGI/Direct2D/Shaders are what you're looking for, but you need to be more specific and/or do a little search by yourself. Google for "directx image processing" for example – Simon Mourier Aug 10 '23 at 18:21
  • You could try to draw the pixels in the draw the pixels and then have it "flipped" or "swapped" and sent to the screen on a refresh signal. You could start from the Doc:[Work with DirectX device resources](https://learn.microsoft.com/en-us/windows/win32/direct3dgetstarted/work-with-dxgi) – Jeaninez - MSFT Aug 11 '23 at 01:56
  • @SimonMourier are you suggesting that I take all the pixels on the screen, treat it as an image and do my processing on that, then render this to the screen? Do I have to do it in a window, or can I just write it to the screen buffer? – Kew Yu Jun Aug 14 '23 at 19:18
  • @Jeaninez-MSFT thanks! I'll take a look – Kew Yu Jun Aug 14 '23 at 19:20
  • @KewYuJun Have you got any updates about this issue? – Jeaninez - MSFT Aug 18 '23 at 08:41

0 Answers0