Van Gogh filter crashes

van Gogh flow also crashes on my 8 core mac. Crashes in ff 2 and ff3. Running 10.6.8
Rich

I wrote the filter. It's got a lua script in it which is the most likely suspect. It should be pretty inoffensive, though. It's got a couple of library calls, no divisions that could possibly be by zero and some arithmetic - that's about it. I see you're on a Mac. The only library calls are to Math.Atan2 and Math.PI. I can't imagine that the latter causes problems. Can the former? I also see that the allocator is mentioned in the crash report. Could you be running out of memory? I'm ready to help if I can. I don't have a Mac to test on, though. Does the filter fail in the 3.0 beta? I really don't think that there's any good reason for it to fail so I think FF might want to look into this.

Darrell Plank

Well, like I say, it certainly wasn't meant to be malicious and the script is really simple - take a look at it if you like. I really don't think it should be causing any problems if FF is doing everything correctly. Normally I'd be really hesitant to say that but this is something like 15 lines of really simple code. It's hard to imagine that the Atan2 routine would be screwing up on the Mac.

I've attached a test filter which is the original filter without the lua script. Try it out - if it works we can definitely blame the Lua which is where my money is on. If it fails then it's definitely something screwy with FF since I'm using nothing but standard FF components.

Darrell

Lua Flow Test.ffxml

Okay - my best guess is that the library functions don't work on Macs as they should. When I get home I'll do a version with the script but avoiding any library calls and see if that works for you. If it does I can probably make a workaround though it's aggravating that the current code doesn't work properly.

Sorry the library is unstable, but glad you managed to figure out this bug.

GMM: I assume you don't need me to write up this bug, correct? Do you need my crash logs (see above) or anything to help?

Darrel: Can't wait (hope) for a non-Lua version of the filter!

Okay, thanks GMM. I was going to put up another test where I didn't call the library function but I guess that's unnecessary now. Daniel, I'm writing a workaround which does the arctangent by hand which should make everything work regardless since it won't be making any library calls. It's a bit trickier than I'd like due to some of the weirdness inherent in atan2 but I'll get it done and let you know when there's a new result up.

Thanks Darrell. Hate to put you through more work, but know that others will be glad to have the filter too!

Okay, I'm in the process of submitting the update. Mac folks, try out the new version and let me know if there's a problem. This only does no library calls - just arithmetic - so should be fine.

Actually, it doesn't crash; it hangs and I have to force quit.

Beth -
Try deleting the filter in FF and then re-downloading. I'm finding that if you've got the original, it's not overwriting it with the updated version. I really hope that's it because otherwise something REALLY weird is going on.

Darrell

Okay, I think I've done what I can do. I'm really surprised that the fix didn't fix anything. It's just doing arithmetic in the new filter and if Lua can't do arithmetic on the Mac, what can it do? Kind of like an egg timer that does everything an egg timer should do except the timing part. I know Lua CAN work on a Mac. It's used in World of Warcraft for instance and I'm sure a ton of other things.

Oh well - sorry. Thanks for hanging in there. I might be able to make things work with the Derivative component and I might give that a shot sometime.

That is confusing, Tiger. I don't understand. When you say "de-activated" version do you mean the old one rather than the new one? Are you on a Mac? How did you get to the filter editor without it trying to render in the main window? What do you mean "re-connected"? Neither filter is "unconnected" in any of the versions. They're just "connected" to a script node with a different script in it so it's not clear what you mean when you say you "re-connected" the script.

This is the second awesome filter to instantly crash FF2 on my quadcore Mac. "Height" was the first, and was brought to the attention of the developers back in March. Thus far there is no word on progress or any communication to mac users that these filters should not be downloaded. I wonder how challenging this stuff gets.

Heloo everyone. i had the same problem and when it prompt to debug click on reopen. It will reopen and ask again for debug, don't click anywhere except on the tool bar and click on filter>locate filter> drag it to the trash and the software will work as before.