GNU bug report logs - #38109
27.0.50; xpm image scaling doesn't work

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Message #47 received at 38109 <at> debbugs.gnu.org (full text, mbox):

From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: Alan Third <alan <at> idiocy.org>
Cc: Adam Sjøgren <asjo <at> koldfront.dk>, 38109 <at> debbugs.gnu.org
Subject: Re: bug#38109: Updated Emacs to HEAD, consistently not scaling now
Date: Fri, 08 Nov 2019 22:11:13 +0100

Alan Third <alan <at> idiocy.org> writes:

> OK, that makes sense. Check out the comment and code at line 2593 of
> image.c:
>
>     /* FIXME: Do we need to handle all possible bit depths?
>        XRenderFindStandardFormat supports PictStandardARGB32,
>        PictStandardRGB24, PictStandardA8, PictStandardA4,
>        PictStandardA1, and PictStandardNUM (what is this?!).
>
>        XRenderFindFormat may support more, but I don't
>        understand the documentation.  */
>     format = XRenderFindStandardFormat (display,
>                                         depth == 32 ? PictStandardARGB32
>                                         : depth == 24 ? PictStandardRGB24
>                                         : PictStandardA8);
>     *picture = XRenderCreatePicture (display, *pixmap, format, 0, &attr);

But isn't that about the depth of the screen, not the number of bits in
the image?

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

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