On Tue, 15 Jun 1999, Robert Kondner wrote:
> When you refer to a "framebuffer driver" is this a driver that draws
> using direct access to video memory in a packed pixel manner?
The Linux framebuffer is just a unified way to access the graphics
hardware without risk of crashing the machine, and to produce a text
console on non-VGA hardware. One user space framebuffer driver can drive
any graphics hardware that kernel space drivers exist for, without needing
to know any hardware specifics. It is possible to use the accellerated
functions on the hardware by mapping the control registers of the card
into your address space and playing with them directly, which is what the
new Xfree accellerated framebuffer drivers do, but you don't need that
just to get graphics from it. The kernel can also use the accellerated
features of the chipset directly for speeding up the rendering and
scrolling of the text console if the low level framebuffer driver supports
it.
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