Caustics test - 100k spp both 540p and 4320p using PT kernel

[nuno1980]

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

At our sun source, 100k spp (samples per pixel) at Path Tracing (PT) kernel - 540p vs 4320p:

4320p is much better caustics than 540p. But 4320p is ~39x longer render time than 540p but 4320p is 64x higher resolution screen than 540p. Therefore, 4320p has 1.6x more performance efficiency.

Best regards.

[pixym]

What kernel did you use ?
From what I have seen, photon tracing is far quicker for caustics rendering.

[nuno1980]

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 Variable caustics (new): Path Tracing vs Photon Tracing.

[pixym]

My bad, I did not even notice « PT » in the title