Jump to content
  • Advertisement
Sign in to follow this  
jerrycao_1985

Why do we need to take primary ray pdf into account in light tracing?

This topic is 1000 days old which is more than the 365 day threshold we allow for new replies. Please post a new topic.

If you intended to correct an error in the post then please contact us.

Recommended Posts

Hi

 

I'm wondering why do we need to take the pdf of primary ray into account and ignore primary ray pdf in traditional path tracing.

 

In a bidirectional path tracing algorithm, the connected segment won't take pdf from any point to the other because those two points are generated from more earlier points. My take on it is that it is pretty similar to light tracing by connecting light sample and camera eye point. (I didn't consider anything about finite size aperture with DOF effect, maybe it is relevant.)

 

Appreciate for any tips.

 

Thanks

Jerry

Share this post


Link to post
Share on other sites
Advertisement
Sign in to follow this  

  • Advertisement
×

Important Information

By using GameDev.net, you agree to our community Guidelines, Terms of Use, and Privacy Policy.

We are the game development community.

Whether you are an indie, hobbyist, AAA developer, or just trying to learn, GameDev.net is the place for you to learn, share, and connect with the games industry. Learn more About Us or sign up!

Sign me up!