Kray3 Feature Requests

  • Status Closed
  • Percent Complete
    100%
  • Task Type Feature Request
  • Category Render core
  • Assigned To
    Grzegorz
  • Operating System All
  • Severity Low
  • Priority High
  • Reported Version 3.0
  • Due in Version Undecided
  • Due Date Undecided
  • Votes
  • Private
Attached to Project: Kray3 Feature Requests
Opened by Johny - 09.10.2017
Last edited by Johny - 26.10.2017

FS#127 - Corner error

This error appear sometimes and looks like light leaks.
It comes from Path Passes option.

I tried many options:
- increase/decrease GI resolution
- different Path Passes distance 10-100%
- more photons
- disable Path Passes - it helps but this is no solution for rendering (I tested normal scenes and without Path Passes looks very bad)

In Path Tracing render is correct.

Need research problem.

Closed by  Johny
26.10.2017 19:54
Reason for closing:  Fixed
Additional comments about closing:  

Works for me - but I will back to this if I will catch something suspicions.

Admin

Photon map is slightly darker then path tracing. I think its the cause. When it switches to PT in corners they are brighter too. Must find why PT is so much lighter (recursion rays depth?) and all will work fine I guess.

Admin

OK. Two problems there. One is precomputed samples distance. Its too few of them and they are isolated. Another is too low recursion for correct GI solution. These two combined with more accurate (and more recursion depth, since it adds photon stage recurstion + corner trace recursion) causes differences.

I think I will add a warning about isolated precomputed solution (so its a lot easier to react to bad settings) and will think about balancing PT/PM recursion depths.

   pm_.png (191.4 KiB)
   pt.png (312 KiB)
Admin
Johny commented on 11.10.2017 13:19

recursion depths is now 10 and this is optimum.
Less, render goes to raytracing feeling, more recurse, render looks too candy.

Still I can not clean corners, can you give me correct one lws?

Admin
Johny commented on 12.10.2017 11:12

I confirm: recurse 50-60 fix problem....and generate next: how to deal with that "candy land" after that such big amount of bounces colors?

Admin

I've added a improvement on this. There is no accurate solution since limiting recursion is not accurate physically, but it works quite well. Please test and close task if ok. I will send upadte in a minute.

Admin
Johny commented on 12.10.2017 20:19

Now is better:
- recurse only 20 (no need to go over 50)
- we can use higher GI resolution (before 50-100 mm)
- I raised up distance Path Passe to 100% (before 50% gives me bad effect)

Will test it tomorrow in normal scene.


								    
  			
Admin
Johny commented on 26.10.2017 19:53

Looks for me correct now with new settings for corners (more photons and more bounce light + your Core update)

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