linux-kernel - Re: [PATCH] drm: add modifiers for Apple twiddled layouts

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <Z7ZaC9d_AyIe07n5@blossom>
Date: Wed, 19 Feb 2025 17:24:11 -0500
From: Alyssa Rosenzweig <alyssa@...enzweig.io>
To: Janne Grunau <j@...nau.net>
Cc: David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
	Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
	Maxime Ripard <mripard@...nel.org>,
	Thomas Zimmermann <tzimmermann@...e.de>,
	dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
	asahi@...ts.linux.dev
Subject: Re: [PATCH] drm: add modifiers for Apple twiddled layouts

> > +/*
> > + * Apple twiddled and compressed layout.
> > + *
> > + * This is the main lossless image compression layout supported by Apple GPUs.
> > + *
> > + * The image is divided into tiles that are internally twiddled.  In addition to
> 
> Does the compressed format uses the same the sime tile sizes (in pixel
> dimensions) and layout as DRM_FORMAT_MOD_APPLE_TWIDDLED? I'd assume so
> but I think it's worth stating explictly.

It does. I'll reword to make that more clear.