Lightmix pass blending with previous render with denoising

Corona Corona for 3ds Max Issues
1

Hi guys,

I have a problem in Corona 1.6 and 1.61 where on a certain scene if i do a render and i haven’t cleared the frame buffers previous render, the new render blends 50% with the old. I can do x number of passes and it is still 50% there.

Any ideas?

Cheers

Iain

2

hi,
do you have denoising with amount set to cca. 0.5 enabled?

3

Hi Ondra,

I’ve looked a little more into the problem and it is only visible in th Lightmix pass with denoising enabled.

I render the scene and allow for 5 passes, then hit stop and allow it to denoise. I then change camera and hit render again without clearing frame buffer and it mixes 50% (or so) with the previous render (5 passes) until the point when i hit stop and it denoises. After denoising has finished only the new render is visible. However if i hit cancel instead of stop on the 2nd render i’m left with a mix of both renders.

The denoising amount seems to control the percentage that it is mixing too.

Thanks

Iain

4

ok, and the beauty is fine during this? Or the same problem happens there as well?

5

Similar to this? Interactive LightMix doesn't refresh when render viewport selection - Corona for 3ds Max :: Issues - Chaos Forum
Also Picture without denoising replaced by denoised picture in VFB when render starts - Corona for 3ds Max :: Issues - Chaos Forum

6

Hi Ondra - The beauty pass is unaffected, only the lightmix pass.

Maru - Yes i believe those post are related to the same problem.

Thanks

Iain