On 05/05/2024 20:48, William F Pokorny wrote:

> I'm attaching my version of the scene. I used yuqk, but I don't think 
> I've changed anything in the solver which would account for difference 
> in max gradients seen.
> 
> Do you see differences between your scene and mine which might account 
> for the difference in max gradients? I'm willing to do the digging, if 
> you'll post your version of the scene. I'd like to understand what I'm 
> missing.


Your scene works perfectly. Same image as in your post.
Render time about 6 seconds. I don't think you missed a thing.


My scene (attached) is always bad with with delirious values for
max_gradient. Differences are :

- My container is a sphere : contained_by { sphere { <0,0,0>, 9 } }
- Function is inside isosurface {}
- I have no "threshold" and no "accuracy".
- I remove sky_sphere
- I remove finish{}
Nothing really decisive  :(


Lower (normal) value for max_gradient don't render object

Last thing, my version :
Persistence of Vision(tm) Ray Tracer Version
3.8.0-alpha.9945627.unofficial (
Compiler: 4.2.1 Compatible Apple LLVM 10.0.0 (clang-1000.11.45.5))


Might be buggy ?




-- 
Kurtz le pirate
Compagnie de la Banquise

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