From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <19990120154321.N3026@maxime.u-strasbg.fr> Date: Wed, 20 Jan 1999 15:43:21 +0100 From: Sven LUTHER To: Geert Uytterhoeven , luther@dpt-info.u-strasbg.fr Cc: Michel Daenzer , nardinoc@CS.UniBO.IT, Linux/APUS , Linux/PPC Development , Linux Frame Buffer Device Development Subject: Re: [pm2fb] update 990110 - first public release ;) Reply-To: luther@dpt-info.u-strasbg.fr References: <19990120144929.E3026@maxime.u-strasbg.fr> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: ; from Geert Uytterhoeven on Wed, Jan 20, 1999 at 03:17:26PM +0100 Sender: owner-linuxppc-dev@lists.linuxppc.org List-Id: On Wed, Jan 20, 1999 at 03:17:26PM +0100, Geert Uytterhoeven wrote: > On Wed, 20 Jan 1999, Sven LUTHER wrote: > > On Wed, Jan 20, 1999 at 02:37:20PM +0100, Geert Uytterhoeven wrote: > > > On Wed, 20 Jan 1999, Sven LUTHER wrote: > > > > > > > Yes. The X server must not do video mode initialization, but call the frame > > > > > > > buffer device instead. > > > > > > > > > > > > what then is the stuff you initialize in the mach64 accel init stuff ? > > > > > > > > > > Like you say, that's _accel_ _engine_ init stuff, not _graphics_ _engine_ init > > > > > stuff. The graphics engine takes care of the video mode (programmed in the > > > > > fbdev in the kernel), while the X server has to program the accel engine. > > > > > > > > in the case of the permedia 2, the engine is only one long pipeline, so the graphic and > > > > accel engine are the same ? > > > > > > Are you sure about that? > > > > I think yes, all units are in one pipeline, the same for 2D and 3D, and only this units are documented in > > the TI docs, but then i guess by graphic engine you mean the one responsible for > > sending data to the monitor ? it is the last unit of the pipeline. > > I don't have the Permedia2 docs here, but I don't see any reason why the > graphics engine is supposed to be at the end of the pipeline. You don't change > the graphics engine configuration when drawing data, you have to initialize the > video mode (pixel clock, resolution, timings) only once. i guess we are not speaking about the same things then, ... i will have to look at the docs again. > Yes. But if you want to use the accel engine in X, you have to implement the > reinit function. Well, that's XF68_FBDev, XF86_SVGA automagically does this :-) One more reason to go with XF86_SVGA, isn't it ? Friendly, Sven LUTHER [[ This message was sent via the linuxppc-dev mailing list. Replies are ]] [[ not forced back to the list, so be sure to Cc linuxppc-dev if your ]] [[ reply is of general interest. To unsubscribe from linuxppc-dev, send ]] [[ the message 'unsubscribe' to linuxppc-dev-request@lists.linuxppc.org ]]