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From:   David Gow <davidgow@google.com>
Date:   Wed, 22 Jun 2022 15:12:26 +0800
Message-ID: <CABVgOSnFXqEsnZOeXbu1z8S1nxWcpjWF1SWd7TY3zXCDr5WvcQ@mail.gmail.com>
Subject: Re: [PATCH v4 1/3] drm/rect: Add DRM_RECT_INIT() macro
To:     Thomas Zimmermann <tzimmermann@suse.de>
Cc:     =?UTF-8?B?Sm9zw6kgRXhww7NzaXRv?= <jose.exposito89@gmail.com>,
        dri-devel@lists.freedesktop.org, magalilemes00@gmail.com,
        David Airlie <airlied@linux.ie>,
        =?UTF-8?B?TWHDrXJhIENhbmFs?= <maira.canal@usp.br>,
        Daniel Latypov <dlatypov@google.com>,
        Javier Martinez Canillas <javierm@redhat.com>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        Jani Nikula <jani.nikula@intel.com>, tales.aparecida@gmail.com,
        Isabella Basso <isabbasso@riseup.net>,
        KUnit Development <kunit-dev@googlegroups.com>
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On Tue, Jun 21, 2022 at 6:02 PM Thomas Zimmermann <tzimmermann@suse.de> wro=
te:
>
> Hi
>
> Am 21.06.22 um 11:38 schrieb David Gow:
> > On Tue, Jun 21, 2022 at 12:06 AM Jos=C3=A9 Exp=C3=B3sito
 [ ... ]
> >> +/**
> >> + * DRM_RECT_INIT - initialize a rectangle from x/y/w/h
> >> + * @x: x coordinate
> >> + * @y: y coordinate
> >> + * @w: width
> >> + * @h: height
> >> + *
> >> + * RETURNS:
> >> + * A new rectangle of the specified size.
> >> + */
> >> +#define DRM_RECT_INIT(x, y, w, h) ((struct drm_rect){ \
> >> +               .x1 =3D (x), \
> >> +               .y1 =3D (y), \
> >> +               .x2 =3D (x) + (w), \
> >> +               .y2 =3D (y) + (h) })
> >> +
> >
> > My only slight concern here is that it might be a little bit confusing
> > that a macro called DRM_RECT_INIT() accepts x/y/w/h, whereas the
> > actual struct drm_rect is x1/y1/x2/y2. If the macro were called
> > something like DRM_RECT_INIT_FROM_XYWH() or similar.
>
> The existing drm_rect_init() function uses xywh arguments. So the
> current name is consistent with existing practice. I don't think we
> refer to x2,y2 much, if ever.
>

Ah, fair enough. I wasn't aware of the existing drm_rect_init()
function, so this makes sense as-is.

Cheers,
-- David

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