What kernel did you use ? PT is path tracing. :)

From what I have seen, photon tracing is far quicker for caustics rendering. I knew this kernel but unfortunately, Photon can't render any *variable* caustics on glossy floor and/or ceiling and/or wall with the roughness of less than +/-0.4 - learn ...

Hello, guys. :)

This image with our sun source and the ground@ roughness of 0.0632 is rendered by my GeForce RTX 4090 using Blender Octane Edition v29.14:
This image is limited by blur for caustics and for lights reflected+refracted and is downscaled to 540p at path tracing (PT).

-Rendered view ...

New YT video - check above this link with my new message.

Good day, guys. :)

New youtube video but defocus - you need to buy any big rendered image for get new free extra rendered image. :):
https://youtu.be/lECJ4DJzmzQ

At "Photon Tracing" kernel but I needed 1M spp because PPM can't able to render any "variable caustics" (learn - here ) but yes path ...

I updated OP to add few phrases (light magenta color): "- if FIRST you have bought *big* image (...) 5 and 12 hours of render time at 1M-spp (...)".

Here -> viewtopic.php?f=32&t=84153&p=436096#p436096

Hello. I'm using OctaneRender plguin v29.14 and I've a RTX 4090 running Windows 11 23H2. :)

I picked unique region at Photon Tracing kernel@50diff and @60spec depthes and @radius 0.01 and... I got... bit more than 1M spp* (= 1,028,776 spp*). :shock: Woww! :D :lol: Because I don't know how do I ...

Hello. I'm using OctaneRender plugin for Blender v29.14 with my GeForce RTX 4090. :D

At our sun source, 100k spp (samples per pixel) at Path Tracing (PT) kernel - 540p vs 4320p:
caustics test - 540p (8x zoom) vs 4320p.png

4320p is much better caustics than 540p. :o :mrgreen: But 4320p is ~39x ...

Hi,

Please never use Show Octane Viewport when working with Octane for Blender. It's only there for debugging purpose.

Also, the new custom version is now available for al prime users as well. Ok. But OctaneRender™ for Blender 2023.1.3 - 28.17 [STABLE] was fine before OctaneBlender Addon 29.13 ...

I've OctaneBlender Addon 29.13 Beta Release [TEST] Prime edition (NOTE: stable hasn't Prime ediiton yet).

"Show Octane Viewport" is ok at default Vectron nodes settings. I deleted 2 *Universal* materials and I added 2 *Specular* materials for 2 spheres... but "Show Octane Viewport" doesn't respond ...