On 2/28/22 06:03, William F Pokorny wrote:
> In coming back to the tiling patterns for some povr testing, I 
> suddenly(1) picked up 'new' isosurface issues with tiling's 13 and 14. 
> On more digging, it looks like there are generic issues in these two, 
> similar, patterns. Issues I fear exist in other tiling patterns too, but 
> I've not gone looking for more grief as yet.

For the record and FWIW.

In working on documentation for yuqk created a test scene rendering all 
27 tiling patterns to grey gradients with jitter off, but otherwise 
heavy Anti-Aliasing (AA). Using an orthographic camera.

Picked up numerical noise with tiling patterns: 3, 12, 13 and 14. 
Patterns 13 & 14 known about when I made the original post.

NOTE! Many things affect whether such numerical noise will show up or 
matter. In typical scenes don't worry about this numerical noise - until 
you see it and need to deal with it.

Attaching the image for 3 - rendered with v3.8 beta 2.

Bill P.

Post a reply to this message

Attachments:
Download 'tiling3.png' (44 KB)

Preview of image 'tiling3.png'