Smooth test for soft shadows: [email protected] size vs micro-dot sphere light

[nuno1980]

Hello.

[email protected] size: soft shadows are unsmooth - BUG

Artificial micro-dot sphere light: soft shadows are perfectly smooth - CORRECT

- Download - free ORBX project -

test - smooth shadows between [email protected] size and artificial microdot sphere light.ocs

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-> open this project and choose to click one of 2 "Render target" nodes to start rendering: "[email protected] size" and "Artificial micro-dot light"

Best regards.

[nuno1980]

@roeland or @mojave:

Hello. Can you find the issue at the daylight env.?

Best regards.

[nuno1980]

Hello, guys.

New 3 screenshots but at [email protected] size only (not any artificial light):

- Box@specular with ior ~1.33 for test - if shadows are smooth or unsmooth

- Unsmooth as bug shadows by caustics at Progressive Photon Mapping (PPM) method under Photon Tracing kernel

- Smooth shadows by caustics at PT kernel

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---SOLUTION--- / for avoid any bugged shadow from ultrathin sunlight (eg: lower than ~0.3x size) source on Daylight environment only:
- should change the kernel to Path Tracing, must disable "caustic blur" as "0" (0.01 by default and SORRY for long time render as few or many hours to be enough caustics ) and must enable "Nested Dielectrics";
- add a box, add "specular" material node for this with air@ior 1.00029 or w/ vaccum@ior 1.0 and should change the priority to ALWAYS lower number than any other object;
- any object must be always inside of air with or w/o fog or of vaccum.
-> Enjoy and Happy Rendering!

Or we wait for fixed bug/unsmooth shadows at ultrathin sunlight source in next version of OctaneRender.


Best regards.