Search Unity

  1. Good news ✨ We have more Unite Now videos available for you to watch on-demand! Come check them out and ask our experts any questions!
    Dismiss Notice
  2. Enter the 2020.2 Beta Sweepstakes for a chance to win an Oculus Quest 2.
    Dismiss Notice

HDR Raytraced Refelctions

Discussion in 'HDRP Ray Tracing' started by fra3point, Sep 10, 2020.

  1. fra3point

    fra3point

    Joined:
    Aug 20, 2012
    Posts:
    221
    Hello, everyone!

    In these days I'm experimenting the Raytracing system, but I can't get HDR raytraced reflections... Is this a known limitation of the system or am I missing something?

    Look at the following screenshot: as you can see the headlights are very emissive, but the reflections aren't bright at all.

    upload_2020-9-10_9-53-26.png

    Planar reflections (mirrors) seem to have the same issue, but only if RayTracing is enabled in Screen Space Reflection:

    upload_2020-9-10_10-1-28.png

    I'm on a Nvidia GeForce 1080, maybe it's just the raytracing fallback for non-RTX cards?
    Did anyone succeded to get HDR raytraced reflection?


    Edit: the option Clamp can be used to allow pre-exposed colors to be reflected, but it is limited to 10. In my case, it wasn't enough...


    Thanks,
    Francesco
     
    Last edited: Sep 10, 2020
  2. Lex4art

    Lex4art

    Joined:
    Nov 17, 2012
    Posts:
    272
    Probably the best way is to use actual light source - area or spot light - it should have unclamped highlight range.
    Upd: sorry for messy reply, it was about "if you're using emissive textures as the light sources it will be better to use actual light's instead because texture lighting range is clamped".
     
    Last edited: Sep 12, 2020
    fra3point likes this.
  3. fra3point

    fra3point

    Joined:
    Aug 20, 2012
    Posts:
    221
    Thanks for the answer!
     
  4. auzaiffe

    auzaiffe

    Unity Technologies

    Joined:
    Sep 4, 2018
    Posts:
    42
    stuksgens and fra3point like this.
  5. fra3point

    fra3point

    Joined:
    Aug 20, 2012
    Posts:
    221
    Thank you, this is a solid solution!

    Francesco
     
unityunity