* bug#50958: 27.2; Very blurry svg rendering on Retina screen
@ 2021-10-02 7:25 Carlos Pita
2021-10-02 9:06 ` Lars Ingebrigtsen
0 siblings, 1 reply; 6+ messages in thread
From: Carlos Pita @ 2021-10-02 7:25 UTC (permalink / raw)
To: 50958
Hi all,
I'm having a hard time getting org-mode LaTeX preview to render without
excesive blurriness. I started with a default configuration of emacs
27.2 from https://emacsformacosx.com/. Since that build doesn't support
svg rendering, I moved to emacs 27.2 from
https://github.com/d12frosted/homebrew-emacs-plus, which is compiled
with svg support. But the rendering ended up being as blurry as with
png. So I opened the particular svg files that the org-mode backend was
producing in the stock Preview app and they look just fine. I also
opened them with doc-view and they look as bad as in org-mode. So is
this a known issue? Some part seems to have the wrong idea of the actual
resolution of my device.
Best regards,
Carlos
---
In GNU Emacs 27.2 (build 1, x86_64-apple-darwin20.6.0, NS appkit-2022.60 Version 11.6 (Build 20G165))
of 2021-10-02 built on Carloss-MacBook-Pro.local
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^ permalink raw reply [flat|nested] 6+ messages in thread
* bug#50958: 27.2; Very blurry svg rendering on Retina screen
2021-10-02 7:25 bug#50958: 27.2; Very blurry svg rendering on Retina screen Carlos Pita
@ 2021-10-02 9:06 ` Lars Ingebrigtsen
2021-10-02 15:52 ` Carlos Pita
0 siblings, 1 reply; 6+ messages in thread
From: Lars Ingebrigtsen @ 2021-10-02 9:06 UTC (permalink / raw)
To: Carlos Pita; +Cc: 50958
Carlos Pita <carlosjosepita@gmail.com> writes:
> I'm having a hard time getting org-mode LaTeX preview to render without
> excesive blurriness.
SVG rendering on HiDPI screens has been improved in Emacs 28 -- could
you try that instead to see whether it fixes the problem?
--
(domestic pets only, the antidote for overdose, milk.)
bloggy blog: http://lars.ingebrigtsen.no
^ permalink raw reply [flat|nested] 6+ messages in thread
* bug#50958: 27.2; Very blurry svg rendering on Retina screen
2021-10-02 9:06 ` Lars Ingebrigtsen
@ 2021-10-02 15:52 ` Carlos Pita
2021-10-03 8:56 ` Lars Ingebrigtsen
0 siblings, 1 reply; 6+ messages in thread
From: Carlos Pita @ 2021-10-02 15:52 UTC (permalink / raw)
To: Lars Ingebrigtsen; +Cc: 50958
> SVG rendering on HiDPI screens has been improved in Emacs 28 -- could
> you try that instead to see whether it fixes the problem?
Sure Lars, I was going to do it anyway because of other issues with pdf-tools.
It indeed fixes part of the problem:
* LaTeX previews in org-mode are high resolution now.
* Also adds the frame-scale-factor function that’s used by the fix to pdf-tools [1] blurry rendering.
But other related issues remain:
* doc-view still renders low-resolution svg.
* doc-view still renders low-resolution pdf (which is not the topic of this issue but may be relevant).
Best regards,
Carlos
---
[1] https://github.com/vedang/pdf-tools/commit/f771c93781b3135200cae6dbc8e45dbb887f77b1
^ permalink raw reply [flat|nested] 6+ messages in thread
* bug#50958: 27.2; Very blurry svg rendering on Retina screen
2021-10-02 15:52 ` Carlos Pita
@ 2021-10-03 8:56 ` Lars Ingebrigtsen
2021-10-03 9:31 ` Alan Third
0 siblings, 1 reply; 6+ messages in thread
From: Lars Ingebrigtsen @ 2021-10-03 8:56 UTC (permalink / raw)
To: Carlos Pita; +Cc: Alan Third, 50958
Carlos Pita <carlosjosepita@gmail.com> writes:
> But other related issues remain:
>
> * doc-view still renders low-resolution svg.
> * doc-view still renders low-resolution pdf (which is not the topic of
> this issue but may be relevant).
Perhaps Alan has some comments here -- he did the work to get HiDPI
rendering to work for SVGs, so I've added him to the CCs.
--
(domestic pets only, the antidote for overdose, milk.)
bloggy blog: http://lars.ingebrigtsen.no
^ permalink raw reply [flat|nested] 6+ messages in thread
* bug#50958: 27.2; Very blurry svg rendering on Retina screen
2021-10-03 8:56 ` Lars Ingebrigtsen
@ 2021-10-03 9:31 ` Alan Third
2021-10-05 5:42 ` Carlos Pita
0 siblings, 1 reply; 6+ messages in thread
From: Alan Third @ 2021-10-03 9:31 UTC (permalink / raw)
To: Lars Ingebrigtsen; +Cc: Carlos Pita, 50958
On Sun, Oct 03, 2021 at 10:56:44AM +0200, Lars Ingebrigtsen wrote:
> Carlos Pita <carlosjosepita@gmail.com> writes:
>
> > But other related issues remain:
> >
> > * doc-view still renders low-resolution svg.
> > * doc-view still renders low-resolution pdf (which is not the topic of
> > this issue but may be relevant).
>
> Perhaps Alan has some comments here -- he did the work to get HiDPI
> rendering to work for SVGs, so I've added him to the CCs.
I think docview uses external applications to render the files to png
and it has its own setting for DPI (doc-view-resolution), which on a
hi-dpi screen is a bit low.
IIRC docview is a bit strange because you don't set the dpi to the
screen's dpi, the actual value you want to use depends on various
factors, like how large your window is and whether you zoom in on the
image or not.
--
Alan Third
^ permalink raw reply [flat|nested] 6+ messages in thread
* bug#50958: 27.2; Very blurry svg rendering on Retina screen
2021-10-03 9:31 ` Alan Third
@ 2021-10-05 5:42 ` Carlos Pita
0 siblings, 0 replies; 6+ messages in thread
From: Carlos Pita @ 2021-10-05 5:42 UTC (permalink / raw)
To: Alan Third, Lars Ingebrigtsen, Carlos Pita, 50958
Hi Alan,
> I think docview uses external applications to render the files to png
> and it has its own setting for DPI (doc-view-resolution), which on a
> hi-dpi screen is a bit low.
>
> IIRC docview is a bit strange because you don't set the dpi to the
> screen's dpi, the actual value you want to use depends on various
> factors, like how large your window is and whether you zoom in on the
> image or not.
Wouldn't it make sense to set the default resolution to a value more
appropriate to the screen resolution then? I understand that someone
may want to change it for zooming for example, but OOTB seems quite
broken in a HiDPI screen and the average user (even the average emacs
user) probably doesn't understand a lot about scaling factors, not to
say about the existence of doc-view-resolution. Maybe now that there
is frame-scale-factor in emacs 28 it could be used to set the default
resolution for docview?
Best regards,
Carlos
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2021-10-05 5:42 UTC | newest]
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2021-10-02 7:25 bug#50958: 27.2; Very blurry svg rendering on Retina screen Carlos Pita
2021-10-02 9:06 ` Lars Ingebrigtsen
2021-10-02 15:52 ` Carlos Pita
2021-10-03 8:56 ` Lars Ingebrigtsen
2021-10-03 9:31 ` Alan Third
2021-10-05 5:42 ` Carlos Pita
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