I am really pleased with this week's work, but there are some drawbacks: I did it quick, so I cannot promise it is good. The most obvious bug already is that at around 200-500% zoom you start to see tiling artifacts. I know what causes this (interpolation algorithms not getting full pixel neighbour data from my simple tesselating tiles) and have a plan to fix it (adding a tile border pre-resize, and then cropping). There is also an issue when the 'virtual' image exceeds about 32,000x32,000, so I hacked a zoom block for that. There may be some weird files that render with other stitching artifacts or bad tile data. Note also that hydrus's 'Animation' renderer (the soundless fallback if you do not have mpv support) does NOT use tiling yet, so it still sucks at zooming! Please let me know how you get on!

If you have a steam-powered GPU or a machine with only 4GB of ram, you might like to wait for 439 so I can address any surprise bugs or performance issues.

PTR and account permissions

The PTR is changing how its accounts work. The shared public account is transforming to a 'read-only' account that can only download, so if you want to upload, you'll be going to manage services to auto-create your own privileged account. This is being done to improve janitor workflow for the various petitions, which were all being merged together because of the shared account. With the recent network updates, it will soon be easier for janitors to send simple messages back to these individual accounts, like 'that proposed sibling was not approved because...'.

Unfortunately, various permission and account-management code has not been tested much until now, so as the PTR guys have been trying this stuff out, I have been working to improve bad notifications and workflows. This week I rounded out account permissions testing with uploading. Hydrus no longer tries to upload content the current account does not have permission for, and if you end up in that situation, popup messages now tell you what is going on. It also catches if your account is currently 'unsynced', with instructions to fix.

Similarly, under 'manage siblings/parents', you can now see and edit all tag repositories (previously, they were hidden if you currently had no permission), but you get a label telling you if you don't have permission.

full list

- media viewer:
- I have hacked in tile-based image rendering for the media viewer. this has always been planned as a larger, longer-term job, but the problem of large images is only getting worse, so I decided to just slam out a prototype in a week. if you have a steam-powered GPU or 4GB ram, you might like to wait until next week to update so I can iron out any surprise bugs or performance problems
- images are now cut into tiles that are rendered on demand, so whenever the image is zoomed larger than the media viewer window, only those tiles currently in view have CPU and memory spent on resizing and storage. as you pan around, new tiles are rendered as needed, and old discarded. this makes zooming in super fast and low memory, even for large images!