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Re: How is graphics rendered in various older computing devices supported by NetBSD
Thank you for your answer. I have one more related query though- does the rasops library enable detection of screen resolution in its supported devices?
01.10.2019, 09:48, "Martin Husemann" <martin%duskware.de@localhost>:
> On Tue, Oct 01, 2019 at 03:35:42AM +0530, Arvind Arvind Pro wrote:
>> Or is the graphics/text rendered based on the type of graphics
>> adapter- eg SVGA(Super Video Graphics Adapter) / EGA(Extended Graphics
>> Adapter) and so on? If someone can shed more light on this it would be
>> very helpful.
> Heh, those are pretty modern graphic cards ;-)
> Indeed the rendering depends on the framebuffer device and is done
> differently in various drivers. Many of the old graphics adpaters have
> hardware acceleartion (e.g. for scrolling) and the framebuffer driver
> makes use of that. A classic example is the cg6 device used on old
> sun machines, see:
> Most (all?) of these drivers use a common library called "rasops", see
> and attach a "wsdisplay" console device:
> You can find the various drivers by doing a "full search" on nxr for rasops:
> Does that answer your question?
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