From: Petr Vandrovec <vandrove@vc.cvut.cz>
To: syrjala@sci.fi
Cc: linux-fbdev-users@lists.sourceforge.net,
linux-fbdev-devel@lists.sourceforge.net
Subject: Re: [Linux-fbdev-users] Card's view of framebuffer offset into userspace?
Date: Mon, 15 Jul 2002 02:02:14 +0200 [thread overview]
Message-ID: <20020715000214.GD11998@ppc.vc.cvut.cz> (raw)
In-Reply-To: <20020714161029.A24172@sci.fi>
On Sun, Jul 14, 2002 at 04:10:29PM +0300, Ville Syrjälä wrote:
> Is there a way to ge the framebuffer offset to userspace? I hacked
> DirectFB to draw to the crtc2 display but currently I've had to hardcode
> the framebuffer offset. So I need something I can feed to tmy G400.
In what environment? With matroxfb you have special framebuffer which
is displayed by CRTC2 engine. Offset is not explicitly exported, but
if you'll take low 24 bits from fb_start, you'll get offset on
G400/G450/G550 devices.
Accessing CRTC2's memory through primary head's framebuffer is not
supported.
Best regards,
Petr Vandrovec
vandrove@vc.cvut.cz
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next parent reply other threads:[~2002-07-15 0:02 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20020714161029.A24172@sci.fi>
2002-07-15 0:02 ` Petr Vandrovec [this message]
2002-07-15 1:56 ` Card's view of framebuffer offset into userspace? Ville Syrjälä
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