Regarding the reflected-water / orange-glass example, could you clarify what you mean by "new material" and what exact result you expect when rotating the glass by ±90°? I’m not quite sure I understand that particular setup.

An example scene would be helpful in understanding the situation.
We ...

The daylight environment is currently treated as emitting unpolarized light, so rotating the camera polarizer will not produce a directional polarization effect there. In that case, you should mainly expect a reduction in the overall intensity.
Ok but watch about polarization filter using for ...

Hello.

I tested Polarization filter of camera and this filter can work the calcite (example) but this filter cannot:
- sky light (daylight environment)
- reflected water (new material), if we use orange sunglasses (new material), we rotate its by -90º or +90º to invert the color reflection for ...

Hi Nuno, thanks a lot for the feedback.

Regarding the birefringent optical axis, it is currently defined in world-space coordinates, so it is not affected by the rotation of the instance. We are working on moving the optical axis to object space so that it follows the object transformation. Hello ...

Hello! Very good new version! :D

But:
- still no fixed issue for rotate any birefringence material - https://render.otoy.com/forum/viewtopic.php?p=443877#p443877
- not remove roughness at disabled "Light coherence" (= deleted node) yet - https://render.otoy.com/forum/viewtopic.php?p=444030#p444030 ...

Hello, guys! :)


VERY IMPORTANT for avoid any confusion due to weak precision of noises+colors of PNG image type:
-after completed rendering, should choose "EXR" image type with uncompressed, and with FP32 for insane color depth (this competes perfect true color at in the real life - much higher ...

PolderAnimation wrote: Fri Aug 28, 2026 8:59 am It I clik on the 'Octane 2027 Roadmap and Beyond ' it says 'You are not authorised to read this forum.'
Is everyone having that? of is it just me?

Same for me.

everdrone wrote: Sat Aug 15, 2026 6:05 pm Finally! Can't wait to try native diffraction grating shaders!
I want to believe that my blog post contributed to the implementation from OSL to native code

But incorrect caustics at Photon Tracing kernel - here

Hello, guys. :)

-To increase photon or diffuse depthes for add new caustics-:
increase photon or diffuse depthes for add new caustics.png


-To increase specular depthes for remove any black area-:
increase specular depthes for remove any black area.png

But IMPORTANT FIRST: To decrease ...

Hello, guys.

If diffraction grating is disabled as "Grating weight: 0.000" for ignore "Light coherence (micrometer): 100.000", zero roughness is failed and roughness color is incorrect at our sunlight source. But yes correct roughness color is almost white.

Best regards.