j.glisse at gmail.com
Mon Feb 5 02:19:58 PST 2007
On 2/5/07, Russell Shaw <rjshaw at netspace.net.au> wrote:
> Rene Rebe wrote:
> > Hi,
> > On Sunday 04 February 2007 14:18:01 Russell Shaw wrote:
> >> Jerome Glisse wrote:
> >>> On 2/4/07, Russell Shaw <rjshaw at netspace.net.au> wrote:
> >>>> Hi,
> >>>> Where can i get the "vesa" standards free? Or do i have to buy'em?
> >>>> I'm interested in understanding and improving X video drivers.
> >>> There should be a pdf of vesa vbe 3.0 available on the net. But don't
> >>> expect to improve things using vesa, AFAIK vesa is a very limited
> >>> standard with almost no acceleration for any interesting things.
> >>> It's more a legacy things that let you set video mode and draw
> >>> everythings using CPU and memcpying to the video card.
> >> Hi,
> >> Are there any standards for a hardware accelerated graphics driver
> >> api for 2D on current graphics cards?
> > No.
> I found there is one (VBE/AF): http://www.vesa.org/public/VBE/VBE-AF07.pdf
I think such things was only used by one or two esorteric graphics
card company. You might to check if the GPU you are targetting have
such capabilities (which is unlikely for embedded device i think).
Best choice might to be to write a DDX for your GPU and add
then add acceleration depending on hw capabilities (btw your
target GPU might already have a DDX).
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