Date: Sat, 21 Jan 2017 23:13:46 +0000 From: Anindya Mukherjee <anindya49@hotmail.com> To: Adrian Chadd <adrian.chadd@gmail.com> Cc: "freebsd-current@freebsd.org" <freebsd-current@freebsd.org> Subject: RE: vt(4) chops off the leftmost three columns Message-ID: <BN6PR22MB08029ABD070FB0CFC1A92856B6700@BN6PR22MB0802.namprd22.prod.outlook.com> In-Reply-To: <CAJ-Vmo=bRJvkX9JM0CmLcQexpPF%2B6X8GDB3urCTjAAS6Tzro1Q@mail.gmail.com> References: <BN6PR22MB0802DB657D97A1F6C8EB3F34B67E0@BN6PR22MB0802.namprd22.prod.outlook.com>, <CAJ-Vmo=bRJvkX9JM0CmLcQexpPF%2B6X8GDB3urCTjAAS6Tzro1Q@mail.gmail.com>
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Thanks! I needed a breakdown like this. I'll need to study the code a bit m= ore. Anindya ________________________________________ From: Adrian Chadd [adrian.chadd@gmail.com] Sent: January 20, 2017 3:11 PM To: Anindya Mukherjee Cc: freebsd-current@freebsd.org Subject: Re: vt(4) chops off the leftmost three columns hiya, Mechanically it doesn't look /that/ hard: * vesa.ko pulls in the vesa.c bits and the syscons vesa control bits. Ideally we'd have them as two separate modules, so you could load "vesa" without needing the syscons bits. * Maybe then write a vt 'fb' interface to talk to the old-school framebuffer interface * Then (if we're lucky) we can have vt use the same VGA, VESA, (mach, creator, etc!) through the fb interface, rather than reimplementing its own. I looked at it and it doesn't look /that/ hard. If you only cared about vesa, then you could do something like what 'creator' and 'creator_vt' did in sys/dev/fb/ . It's just sad that the vt interface to the screen buffer isn't as complete as the older school framebuffer interface is. -adrian On 19 January 2017 at 12:35, Anindya Mukherjee <anindya49@hotmail.com> wrot= e: > Hi Adrian, > > I was looking at the source for the vt driver. Wondering how much work it= is to add VESA support to the VGA backend? As you say ATM it's hardcoded t= o use 640x480. Pardon my ignorance, but can we reuse any VESA code from sys= cons? > > Also, how dependent is splash/screensaver support on the VESA implementat= ion? > > Thanks, > Anindya
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