Mueen Nawaz wrote:

>     Not DRM. I don't know the details, but it's a function of the video 
> driver. If the rendering is done via hardware, then the usual screenshot 
> won't work. If you have a software renderer, then it will.

Some thing with 3D computer games. Because the data doesn't exist in the 
framebuffer but is composited in in hardware, copying the framebuffer to 
a file won't capture that data.

Depending on the specifics, there *are* ways to do this though. Just the 
standard screen capture won't do it, that's all.

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