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Messages - TomG

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We'd need a lot more developers than that to restart development for ARCHICAD. Those are just new members we need to support our existing applications, sorry.

PS - also we don't announce departures, just new arrivals, so this does not necessarily represent an overall growth :)

[Max] I need help! / Re: PLEASE HELP !!
« on: Yesterday at 13:46:13 »
Plus for help on the forums we'd need to know which host software including version, which version of Corona, how long were these run for, what is your hardware, and screen grabs of the renders not photos (as the chromatic aberration from the camera and reflection off the screen and resolution of the camera is adding all sorts of confusing things to the images that make it impossible to tell what we are looking at in terms of render engine output)

[Max] Bug Reporting / Re: dual CPU issues?
« on: Yesterday at 13:33:19 »
Ooops you were saying it is NOT C4D

[Max] I need help! / Re: long time opening file
« on: 2021-07-30, 13:11:54 »
Can you send in the scene via private uploader? (see links in my signature)

Learn what’s new in Corona Renderer 7 with our free live webinar!

On Wednesday August 18th at 6pm CEST (Prague time), our host Nejc Kilar will walk you through Corona 7’s new features, and give you useful tips to become familiar with the new Physical Material. You’ll also learn about the updates to the Corona Sky with new Altitude and Volume Effect (aerial perspective) controls, rendering speedups, how glass materials now look better, — and much more!

This 60–minute presentation will cover both 3ds Max and Cinema 4D, showing you the new features in each, and ending with those changes specific to one application or the other. There will also be time for questions, so be sure to make a note of anything you want to ask as you watch and listen! During the webinar, we’ll cover topics such as:
  • Introduction to the new Corona Physical Material, including:
    • The new UI
    • Greater use of accepted industry standards such as Roughness in place of Glossiness
    • The new Clearcoat parameter
    • The new Sheen parameter
    • General improvements to glass materials
    • 35 presets to get you started with the new Physical Material
  • Several improvements to render speed in different areas
  • The new Altitude and Volume Effect parameters in the Corona Sky
  • Updates to the Material Library (which is now included in Corona for Cinema 4D!)
  • … And more!
Don’t forget this is free, so sign up now at to get the best from Corona 7!

[Max] I need help! / Re: Slow UHD Cache
« on: 2021-07-29, 15:04:05 »
How does it work with the 4K cache, which is intended to be more accurate and use less memory?

While it was very visible, it's just easier to see WHAT is different from the images. Videos are helpful when there's an involved workflow so we can see the steps, but in simple workflow cases, the images are better (well, the scene is best of all :) ). TY for posting the comparison image, and the extra info about it being bump!

It'd be easier to compare if you could post the two images, then we can overlay them or put them into a comparerer :)

Memory doesn't help things go faster, unless you run out :) And if you run out, things then go very much slower.

There may be other differences between those two machines (BIOS, motherboard, timings, various performance overrides and tweaks) that are the cause of the difference. You will find plenty of results on the benchmark where the CPU and memory are the same, but the time to complete the benchmark is different, sometimes by quite a lot, and this is due to those other aspects of the hardware set up.

Corona Renderer 7 for Cinema 4D (Release Candidate 5) is out now!

Everyone with an active FairSaaS or Box with Subscription license has access, and you can download it from:

We're getting ever-closer to the final release, so this is an important chance to give us your feedback and to catch any remaining bugs or other issues from real world testing.

Here are some of the bigger features in Corona Renderer 7:
  - New Physical Material - greater realism without extra work from you, and greater compatibility with other software and workflows (mapped Metalness, choice of Roughness or Glossiness mode, choice of IOR or Specular mode, and more)
  - Corona Sky with the PRG Clear Sky model (renamed from Improved) now has Volume Effect (aerial perspective), Altitude, Turbidity, and Horizon Blur
  - The Corona Material Library - hundreds of ready made materials for use in your scenes
  - Corona Volume Grid - load and render OpenVDBs using Corona
  - Improvements to hybrid and thin glass (thin glass can now have rough refraction, better shadows, and more)
  - Several rendering speed ups that add up:
  - Bucket Rendering, a 5% overall speed up on average, up to 15% in some cases (note: not like V-Ray bucket rendering, you will still see the whole image build progressively!)
  - Faster Denoising in our own High Quality denoiser, a 20% speed up on average, up to 60% in some extreme cases
  - Faster Transparency / Absorption, will depend how heavily these are used in the scene - can be up to 50% in extreme cases (note, does not affect Translucency)

There have been a great many changes since the first RC. Here are the JUST changes since Release Candidate 4 (for those who have been testing as releases come out):

 - Fixed crash when closing Cinema 4D
 - Fixed problem with caustics from environment not rendering in IR
 - Improved imports of ColorMix shader in material library for several materials
 - Removed unsupported "Hair textured" material from matetrial library
 - UHD cache stored in older versions is no longer supported - such legacy UHD cache files will be
   calculated/updated from scratch; this fixes several problems including crashes when loading such
   legacy cache files
 - Crop / Placement values inside Corona Bitmap now increment correctly for UV Unit space

Please test as much as possible and report your findings to us, so that we can make Corona Renderer 7 ready for release as quickly as we can!
Please post all bug reports, questions, etc. on the main Corona 7 Daily Builds sub-forum at

[C4D] General Discussion / Re: Cinema 4D Team Renderer R20
« on: 2021-07-28, 12:06:50 »
On my three different machines, have not run into flicker with how each calculates the cache (the two Intels are different Xeons from each other too, so it is three different CPU configurations). I never save the cache but I am not sure how I would make sure it gets sent / is usable on all three machines :)

[Max] I need help! / Re: New Physical Material
« on: 2021-07-28, 12:03:24 »
You can't achieve this now - because in the real world, the IOR for reflection and refraction is always the same and can't be different. This is one of the cases where the Legacy material let you create unrealistic materials.

The closest thing you have is adding a Clearcoat which has an independent IOR (this would be like adding a layer of lacquer or varnish in the real world, thus giving two different materials that can indeed have separate IORs)

[C4D] General Discussion / Re: Cinema 4D Team Renderer R20
« on: 2021-07-27, 17:31:32 »
Should work just fine. My main machine is an AMD, my two nodes are Intels, and I use TR all the time (right now, even as we speak, in fact :) )

Noise is expected as the calculations for volumetric lighting are more involved, so will take more passes (or heavier denoising) to clean up.

Shouldn't affect the realism here at all, that's more about light bouncing from HDRI env maps etc. so more like your conventional interiors. The adaptivity has a look to see "how intensely does this block of the image need to be rendered?" and then allocates processing power accordingly. The drawback can be, though, that if "not enough volumetrics" appear in a particular block, adaptivity decides it doesn't have that much hard work to do there so doesn't allocate as much processing power - this is why you see the squares in your image, those are the blocks that adaptivity divided the image into (as a future pointer for when disabling it may help :) ).

Hope that helps!

Have you tried disabling Adaptivity?

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