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Messages - maru

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[Max] I need help! / Re: Caustics - Fireflies - again
« on: Yesterday at 19:43:55 »
I will check the provided scene ASAP. I have it on my todo. Sorry for the delay.
Just to make sure - you are not using region / crop rendering here? If so, it is not supported with the caustics solver and will produce splotches that never go away.

Corona Renderer for Blender / Re: Standalone License issue
« on: Yesterday at 17:38:59 »
What happens if you press "next"?

We could continue working on the Archicad plugin, including recompiling for compatibility with newer Archicad releases, if we had developers available for this. Sadly, we do not have any developers who could do it right now.
If you are an experienced developer who would be able to continue the development of the Archicad plugin, or if you know someone who could do that, please send us an email to and we will see what exactly the possibilities are.

Hardware / Re: Benchmark threadriper 3990X
« on: 2020-10-20, 17:27:56 »
There are no dual CPU motherboards for Threadrippers. For that you would need the Epyc series CPUs.
The results are from a single 3990X CPU. It's 64 cores with hyper-threading (AMD calls it Simulataneous Multi-Threading - SMT), so the benchmark detects it as 2 x 64. The detection isn't perfect.
You can also check the benchmarks on other websites, e.g.

Here is a similar thread and some solutions, including the one Romullus mentioned:

Use the Corona Front Back map with one side set to gray and one side set to pure black plugged into the opacity slot.

[Max] Bug Reporting / Re: Ctrl+C VFB
« on: 2020-10-19, 17:48:15 »
So far I wasn't able to reproduce it. I've only discovered that if you spam the button a lot, you sometimes get a warning message that it failed, but I guess that's kind of expected. :)

What is your RAM usage and in what resolution are you rendering when the issue appears?


(Internal ID=580856933)

[Max] Feature Requests / Re: CIE - a few requests
« on: 2020-10-19, 17:28:56 »
Here we go...

1. Gather data for Corona HQ and AI denoisers - Internal ID 580834374

2. Remove fireflies+denoising - Internal ID 580840936

3. TIF alpha - let me guess, you are using Photoshop? ;) Believe it or not, but all the data are there. It is just up to the 2D editor to read it. I tried it in Fusion and it worked fine.

4. Stats tab in CIE - internal ID 296114895

Next time, one request per one forum thread, pretty please.

[Max] Feature Requests / Re: Stop IR in viewport ASAP
« on: 2020-10-19, 17:01:10 »
@lupaz and others with Corona IR+Forest Pack performance issues - can you please send us simple scenes where the issue could be reproduced?
Reminder: it's best to archive the scene with all assets and upload it here -
Then please let me know here which upload method you chose and what the file name was.
We will also need the exact Corona and FP versions, and how to reproduce the problem.


Please provide a minidump, and a sample scene if possible:

Good idea, I remember similar requests, but couldn't find anything. I will forward it to the devs.

[Max] Bug Reporting / Re: Ctrl+C VFB
« on: 2020-10-16, 17:32:53 »
Thanks for the report, we will look into it ASAP. Are there any additional steps needed to trigger this?

[Max] I need help! / Re: Caustics - Fireflies - again
« on: 2020-10-16, 17:29:56 »
Sure, I'll be waiting for a scene. Please let me know where you've uploaded it and what's the file name.

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