question

Bruno Rantin avatar image
Bruno Rantin asked ·

OSL partial derivatives

Hi there!

Is there any hope for us to be able to use Dx, Dy, etc with anything other the P (position)?

It would be really awesome!
Thanks!

oslderivatives
10 |600 characters needed characters left characters exceeded

Up to 5 attachments (including images) can be used with a maximum of 2.0 MiB each and 9.8 MiB total.

1 Answer

· Write an Answer
Mads Drøschler avatar image
Mads Drøschler answered ·

What would you like to do?


1 comment Share
10 |600 characters needed characters left characters exceeded

Up to 5 attachments (including images) can be used with a maximum of 2.0 MiB each and 9.8 MiB total.

I am doing some NPR shaders. Ive done a realtime shader and was porting it to arnold.
I am, basically, doing a partial derivative of N dot V, modulated from camera distance, to do countors. Ive wanted to do the same with OSL for some reasons, for it to be closer to the viewport shader, to be able to better compose for the rest of the shader, and to get away of the contour filter (its really slow, and I have to cut my cpu threads to half, its even slower if I use all 64 threads).

0 Likes 0 · ·

Write an Answer

Hint: Notify or tag a user in this post by typing @username.

Up to 5 attachments (including images) can be used with a maximum of 2.0 MiB each and 9.8 MiB total.

Welcome to the Arnold Answers community.

This is the place for Arnold renderer users everywhere to ask and answer rendering questions, and share knowledge about using Arnold, Arnold plugins, workflows and developing tools with Arnold.

If you are a new user to Arnold Answers, please first check out our FAQ and User Guide for more information.

When posting questions, please be sure to select the appropriate Space for your Arnold plugin and include the plugin version you are using.

Please include images, scene and log files whenever possible as this helps the community answer your questions.

Instructions for generating full verbosity log files are available for MtoA, MaxtoA, C4DtoA, HtoA, KtoA, and Kick.

If you are looking for Arnold Documentation and Support please visit the Arnold Support site.

To try Arnold please visit the Arnold Trial page.

Bottom No panel present for this section.