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Old 06-17-2021, 10:31 PM   #1
EricTbone
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Default Broken automation item HANGS Reaper when adjusting envelope fader (FIXED)

I've attached a project that has cursed automation item. It only has a few visible nodes, but appears to be 4MB of data in the project file.

No clue why Reaper created it. This was part of a bigger project. I isolated the hanging issue to this item by trial and error.

With it there, adjusting the envelope fader hangs Reaper. It becomes totally unresponsive for several minutes (on my machine), then comes back. Trying to adjust fader will hang Reaper again.




Gluing the item doesn't fix it. If you save the automation item, it's 4MB. Trying to reduce points on it hangs Reaper. If you drag out the edges, the are fewer than 10 visible points in the loop region. If you glue it like that, it just gets even more giant internally.

Windows 10 (19041) and Reaper 6.29 (latest as of this posting).
Attached Images
File Type: png EnvelopeFader.png (10.7 KB, 423 views)
File Type: png HungReaper.png (31.6 KB, 437 views)
Attached Files
File Type: zip HangReaper.zip (18.3 KB, 241 views)

Last edited by EricTbone; 06-17-2021 at 11:49 PM. Reason: added machine info
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Old 06-17-2021, 11:43 PM   #2
Daodan
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Can confirm that with attached project. reaper 6.29 win 10 21H1
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Old 06-18-2021, 11:02 AM   #3
schwa
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Any idea how this automation item came to be messed up in the first place?
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Old 06-18-2021, 11:03 PM   #4
EricTbone
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Quote:
Originally Posted by schwa View Post
Any idea how this automation item came to be messed up in the first place?
Nope. Normal project. Lots of copying and editing. *shrug*

I may have moved a region at one point, which seems to be the easiest way to screw up an item in Reaper. It's happened to me multiple times. Was my first bug report, 3 years ago, and it's happened to me a bunch of times since, though this is the first time with an automation item.

Last edited by EricTbone; 06-18-2021 at 11:03 PM. Reason: fix markup
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Old 06-20-2021, 09:07 AM   #5
Justin
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If you have your projects saving undo histories to disk, the undo history file would tell us that...

(At any rate, fixing the O(N^2) hang and making it filter redundant points on project-load to avoid the excess)
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