Re: [Linux-fbdev-devel] mmap()ing of FB memory area

[Romain D. <do...@ir...>]

James Simmons wrote:
> 
> > But what if a framebuffer use 2 discontinuous memory area,
> > say one for the main framebuffer, one for offscreen stuff
> > like overlay buffer, Z-buffer, texture... how can an app
> > access that ?
> 
> Framebuffer filesystem :-)
> 
> /dev/fb/frame0
> /dev/fb/depth
> /dev/fb/overlay
> /dev/fb/stencil

Do you suggest we're better off waiting for the availability
of the FB filesystem, and _then_ try to implement a video
extension to the FB layer ?

BTW, could /dev/fv/overlay0 belong to the _same_
memory area than /dev/fb/frame0 ? In this case
how and when are the respective size defined ?

-- 
DOLBEAU Romain               | l'histoire est entierement vraie, puisque
ENS Cachan / Ker Lann        |     je l'ai imaginee d'un bout a l'autre
do...@ir...             |           -- Boris Vian