Corona Renderer 6 for 3ds Max - Daily Builds Discussion

[rowmanns]

I've been experiencing constant crashes when projecting an image from a standard light with rectangular shape, to simulate caustics.
Every time I move the light in the viewport, IR crashed and with it, also Max.

I managed to eventually get the position of the light where I need it, but I had to stop IR each time I wanted to adjust the light and restart it, (particularly for movement.)
I resorted to standard lights for this instead of a a corona light, because the bitmap projection wasn't casting anything in the Frame Buffer using a rectangular corona light, for some strange reason.

Hi,

Please can you send over your scene and a minidump so that we can investigate? Instructions on how to do this are in my signiture.

Rowan

[Nejc Kilar]

Hi devs,

Excited about all the new improvements in these dailies. One area we're keen to find out if there's been any improvement is caustics. Currently you get a drastically different result going from a region render to a full image. It seems to somehow jam all the photons into the region and you get strong hotspots and a crazy result, making testing tricky and unreliable. It also means that doing tricks like "render selected" isn't really feasible, as the result will always be different than a full proper render.

Other caustics-related hings would be if you are any closer to having the ability for caustics not to affect chosen objects/materials (so you can keep them isolated only where you want them e.g. inside certain pool/water objects or a chosen ceiling object etc.

We're soon to publish some really exciting caustics projects but these are a couple of areas we struggled with during production and would make a massive difference :)

Cheers,

Hey Alex,

Just a quick question, when you say region renders do you mean literal region renders or the "zoom in the vfb" region renders? I'm asking because I find the results to be more consistent if you zoom in and a region that way instead of using the actual region render functionality.

[cjwidd]

[DUPLICATE]

Not sure if this is the appropriate thread to report bugs for Corona version: 6 (DailyBuild Feb 20 2020), but it appears the Material Library is not loading correctly in the Material Library UI(?) Please see attached:

[PROH]

Yes. I already reported it. So it's known problem.

Hope to see a fix soon :)

[cjwidd]

@Proh, thank you for clarifying +1

I rolled back the material library to v5 and the error is resolved.

[rowmanns]

New adaptive enviroment sampling isn't working with shadow catcher. Horrible artifacts are produced. I tested it with several HDRIs - artifacts always visible. The more contrasty HDRI is used, the more severe artifacts are rendered.

Fixed in the latest v6 DB (2020-03-16).

Cheers

[rowmanns]

@Proh, thank you for clarifying +1

I rolled back the material library to v5 and the error is resolved.

Hi,

This is to do with the size set in the top on the MatLib.

For me the issue was also reproduceable in v5. We are working on a fix for it.

Rowan

[romullus]

I'm doing lots of Corona installations today, alternating between V5 and V6 and every time installer gives a message that 3ds max plugin was installed, but corrupted. I haven't noticed any odd behaviour of Corona otherwise. Not a big issue, but seems rather strange, so i thought i'll let you know about that.

[rowmanns]

I'm doing lots of Corona installations today, alternating between V5 and V6 and every time installer gives a message that 3ds max plugin was installed, but corrupted. I haven't noticed any odd behaviour of Corona otherwise. Not a big issue, but seems rather strange, so i thought i'll let you know about that.

Hey,

That does happen sometimes and we are not sure of the cause.
However to save alternating between v5 and v6 all the time you can use the multiloaders instead: https://coronarenderer.freshdesk.com/support/solutions/articles/12000066819. You're installed version will need to be a v6 DB for this to work :)

Rowan

[Frood]

Additional option: define a system env var for the path to load "production" v5 by default to make sure every user (including Backburner running as service for example) loads v5 and use a *.cmd file like described in the article to explicitly use the current daily as override.

For environment variables see Settings -> System -> System info -> Advanced system settings -> Environment variables (or just search for "environment" and choose "Edit environment variables for your account" - you will get both, account and system settings there)

Edit: Guide here.

Good Luck

[romullus]

Thank you guys for the advice. At the moment all this setup feels way too complicated for my poor sick head, but i'll give it a try once i feel better.

[Frood]

Does not sound any good. I hope you have "that thing" only on your HD.


Good Luck

[romullus]

Nah, it's chronic illness, not contagious. Don't worry too much about it.

[aaouviz]

The adaptive lighting speed-up for HDRi environment lighting in the latest daily is great guys! Well done :)

[tallbox]

5 minutes into working with the freshly installed daily and:

File: c:\Corona\dependencies\src\maxSdk\2018\include\point3.h
Line: 333
Function: operator /
Expression: f != 0.0f

Any ideas?