From: Daniel Vetter <daniel@ffwll.ch>
To: Adam Jackson <ajax@redhat.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>,
dri-devel@lists.freedesktop.org, David Airlie <airlied@linux.ie>,
Dave Airlie <airlied@redhat.com>,
open list <linux-kernel@vger.kernel.org>,
"open list:DRM DRIVER FOR QEMU'S CIRRUS DEVICE"
<virtualization@lists.linux-foundation.org>
Subject: Re: [PATCH] drm/cirrus: flip default to 32bpp
Date: Mon, 9 Jul 2018 09:39:24 +0200 [thread overview]
Message-ID: <20180709073924.GB3008@phenom.ffwll.local> (raw)
In-Reply-To: <e127596f255261d78fdfe6f534a1000f60c3c605.camel@redhat.com>
On Fri, Jul 06, 2018 at 02:35:07PM -0400, Adam Jackson wrote:
> On Fri, 2018-07-06 at 11:12 +0200, Gerd Hoffmann wrote:
> > cirrus can handle 1024x768 (and slightly higher) with 24bpp depth.
> > cirrus can handle up to 800x600 with 32bpp.
>
> 16bpp is maybe a better choice? Nobody's using cirrus because they care
> about color fidelity and it'll use less CPU to update. There's
> precedent here, mgag200 defaults to 16bpp on sufficiently memory-
> impaired devices.
Yeah nouveau does the same fallback to 16bpp if there's not enough vram.
So do a bunch of other drivers.
-Daniel
--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
next prev parent reply other threads:[~2018-07-09 7:39 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-07-06 9:12 [PATCH] drm/cirrus: flip default to 32bpp Gerd Hoffmann
2018-07-06 18:35 ` Adam Jackson
2018-07-09 7:39 ` Daniel Vetter [this message]
2018-08-08 8:46 ` Gerd Hoffmann
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