From cc65412360155af9fcfcc91ac5a1c487847a3ef9 Mon Sep 17 00:00:00 2001 From: Jakub Steiner Date: Thu, 8 Oct 2020 14:02:28 +0200 Subject: README additions - cover the basics for wallpaper submissions Fixes https://gitlab.gnome.org/GNOME/gnome-backgrounds/-/issues/7 --- README.md | 23 +++++++++++++++++++---- backgrounds/Stripes.jpg | Bin 7655884 -> 1552330 bytes backgrounds/Symbolics-1.png | Bin 1118282 -> 1686339 bytes 3 files changed, 19 insertions(+), 4 deletions(-) diff --git a/README.md b/README.md index 8ba5cf5..b2d97e5 100644 --- a/README.md +++ b/README.md @@ -18,17 +18,32 @@ It is desirable to have a wide mix of themes and colors for the additional wallp GNOME is deployed globally. Be aware of some bad connotations in certain geographical areas. Depictions of some animals, flags or body parts are better avoided. -#### Low Fidelity and Size Constraints +#### Technical Constraints -One wallpaper is reserved for plain color to be used for remote access where it's benefitial for the compression algorith to cope with it with ease. Unfortunately due to distribution limits, the background collection has to keep its size contrained to around 40MB. This forces us to replace assets rather than add them. You can download the [Nostalgia](https://flathub.org/apps/details/im.bernard.Nostalgia) app to view previous release wallpapers. +##### Resolution -#### Sharpness +It is recommended to submit wallpapers of 4megapixels and above. This isn't a hard requirement for sharp noiseless cases (see below), but a good rule of thumb. + +##### Aspect Ratio + +Specific aspect ratio isn't mandated, all wallpapers are scaled 'to cover' in CSS terms (cropped to fit display). Do take various possible display aspect ratios into consideration when submitting wallpapers with strong reliance on composition. + +##### File size + +Unfortunately due to distribution limits, the background collection has to keep its size contrained to around 40MB. This forces us to replace assets rather than add them. You can download the [Nostalgia](https://flathub.org/apps/details/im.bernard.Nostalgia) app to view previous release wallpapers. + +One wallpaper is reserved for plain color to be used for remote access where it's benefitial for the compression algorith to cope with it with ease. + +##### Sharpness Many photographic sources look great as a thumbnail or scaled down, but at 1:1 aren't 100% sharp. While it may not present itself as a problem on an average laptop screen, the wallpaper has to work on super wide screens where it's cropped to fit and is presented at 1:1 or even scaled up in some cases. Many otherwise suitable background images just fall short when observed at the nominal pixel view. Chromatic aberation and noise is also something that becomes apparent as you approach 1:1. ![Bad Scaling](badscaling.jpg) +##### Color Banding + +Images should look decent even on lower quality displays. Techniques such as dithering should be used for elements with low contrast areas that would otherwise be prone for color banding. ## License -CCBYSA / Public Domain / CC0 is preferred. All attribution goes to the AUTHORS file. +CCBYSA / Public Domain / CC0 is preferred. Authorship does need to be sourced, all attribution goes to the AUTHORS file. diff --git a/backgrounds/Stripes.jpg b/backgrounds/Stripes.jpg index d82ba3e..3e1201c 100644 Binary files a/backgrounds/Stripes.jpg and b/backgrounds/Stripes.jpg differ diff --git a/backgrounds/Symbolics-1.png b/backgrounds/Symbolics-1.png index bf3b289..511d690 100644 Binary files a/backgrounds/Symbolics-1.png and b/backgrounds/Symbolics-1.png differ -- cgit v1.2.1