Author Topic: Denoising Issues of Intel CPUs in Corona 13/14 on macOS and Inquiry About Fix  (Read 1690 times)

2025-08-18, 15:50:26

CR_love

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On macOS systems, neither Corona 13 nor 14’s denoising mode supports Intel CPUs. Moreover, the noise reduction quality and speed of Corona’s High Quality mode are inferior to those when using Intel CPUs, with anomalies at edge details being particularly noticeable. Could you please let us know when the denoising issue for Intel CPUs will be fixed?

« Last Edit: 2025-08-18, 16:35:10 by CR_love »

2025-08-19, 16:36:25
Reply #1

maru

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The CPU version of the Intel AI denoiser should work on Mac OS regardless of CPU model. Can you explain what exactly you mean by "neither Corona 13 nor 14’s denoising mode supports Intel CPUs"? Are you getting some error message? Or perhaps the denoiser doesn't work at all?

Regarding the Corona HQ denoiser, what you see is not an issue specific to Intel or other CPU models. It's just how this denoiser works. It's inferior to the AI denoisers - I wouldn't recommend using it.
Marcin Miodek | chaos-corona.com
3D Support Team Lead - Corona | contact us

2025-08-20, 08:56:24
Reply #2

CR_love

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The CPU version of the Intel AI denoiser should work on Mac OS regardless of CPU model. Can you explain what exactly you mean by "neither Corona 13 nor 14’s denoising mode supports Intel CPUs"? Are you getting some error message? Or perhaps the denoiser doesn't work at all?

Regarding the Corona HQ denoiser, what you see is not an issue specific to Intel or other CPU models. It's just how this denoiser works. It's inferior to the AI denoisers - I wouldn't recommend using it.

Yes, when selecting the Intel denoiser, there's absolutely no response at all.

2025-08-20, 09:08:24
Reply #3

maru

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For interactive or production rendering?
Marcin Miodek | chaos-corona.com
3D Support Team Lead - Corona | contact us

2025-08-20, 10:32:15
Reply #4

CR_love

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For interactive or production rendering?

Hi Maru,
The problem occurs during production rendering. The Intel denoiser works as expected on Windows (with the same Intel CPU), but on macOS, selecting the Intel denoiser doesn't work at all.
« Last Edit: 2025-08-20, 10:47:30 by CR_love »

2025-08-20, 10:47:16
Reply #5

maru

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And once you stop rendering, the Intel denoiser effect isn't applied either? (sorry, just making sure that I understand this right)
Marcin Miodek | chaos-corona.com
3D Support Team Lead - Corona | contact us

2025-08-20, 10:49:02
Reply #6

CR_love

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And once you stop rendering, the Intel denoiser effect isn't applied either? (sorry, just making sure that I understand this right)

Yes, that's right.

2025-08-20, 11:04:42
Reply #7

CR_love

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And once you stop rendering, the Intel denoiser effect isn't applied either? (sorry, just making sure that I understand this right)

Hi Maru,
Previously, someone encountered the same issue as me.

https://forum.corona-renderer.com/index.php?topic=41502.0

2025-08-25, 18:52:43
Reply #8

Avi

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Just a quick update on this: We are checking this internally. Will update you as I find more info about this.
Arpit Pandey | chaos-corona.com
3D Support Specialist - Corona | contact us

2025-08-27, 15:36:08
Reply #9

Avi

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I was able to repro this and have reported it internally for our devs to investigate and fix.

(Report ID=CC4D-1135)
Arpit Pandey | chaos-corona.com
3D Support Specialist - Corona | contact us

2025-08-28, 07:24:33
Reply #10

CR_love

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I was able to repro this and have reported it internally for our devs to investigate and fix.

(Report ID=CC4D-1135)

Thank you. Hope this can be fixed in the upcoming preview builds.