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Thread: DisplayLink Provides USB GPU Support On Linux

  1. #11
    Join Date
    Sep 2006
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    714

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    Ah. I did not know that.

    That is very different from a USB video card... it's a USB _display_.

    Very interesting.

    Does the framebuffer need to be a real video card? Or can it be a software-driven thing?

  2. #12
    Join Date
    Jan 2009
    Location
    Italy
    Posts
    82

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    Quote Originally Posted by drag View Post
    Does the framebuffer need to be a real video card? Or can it be a software-driven thing?
    I'm not sure. For a theoretical point of view it's possible, you just need a virtual video card to please the OS (_that_ one); in the embedded space the video subsystem is often just a chunk of system memory, with a DMA channel dedicated to sending the data off to the display controller; with DisplayLink only the last part would be different.
    On desktop machine however you may want a real video card to accelerate the drawing operations (composition, spinning cubes...)

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