VRay 3.5 bump problem

V-Ray V-Ray for 3ds Max Issues
1

Hi,

I made very simple scene just to test something, but I found this bug. I thought bump in VRay 3.5 will be without any problem. But the sharp edge is terrible, cant use that. Can somebody correct it or where is a problem?

Sending scene in zip file.

Thank you

.

test A.jpg
test A.jpg1024×768 50 KB

test B.jpg
test B.jpg1024×768 90 KB

test.zip (111 KB)

2

Hello, anybody? Or is this normal result?

3

We have not made any changes to the actual bump mapping yet. I did show some experiments, but they need more careful research before going into production. I’m planning to look into that more seriously for 3.6

Best regards,
Vlado

4

Would using a vrayhdri map and setting it to elliptical filtering help?

5

No, it’s not a filtering issue and has nothing to do with the particular texture used for bump.

Best regards,
Vlado

6

I’ve been able to reproduce this in 3.40.01. Either having the bump set high, like 100 for example, or turning the blur down to 0.01 gets similar results to this.

7

I set bump for 30 or so and didnt change filtering if I remember correctly.

8

guys will this be fixed for 3.6?

9

I hope to get to it.

Best regards,
Vlado

10

I ran into a similar issue in Maya. There the issue was actually with the subdivision surface that is built into Maya (when used in combination with a high frequency bump map). Adding a Vray subdivision surface attribute to the geometry fixed it. You might give that a try here.

11

Its still a problem in latest nightly :frowning:

12

What about this problem in vray 4?

13

i am also interested if this is taken care of in upcoming release :slight_smile:

14

Does the solution for this problem come with V-Ray Next?

15

It is a comparison with arnold.
It seems that arnold is taking measures

This problem has been debated from long long time ago. Why is V-Ray still not solving the problem now?

V-Ray render

vray.jpg
vray.jpg1000×700 93.6 KB

arnold render

arnold.jpg
arnold.jpg1000×700 78.8 KB

16

Low Poly Comparison

V-Ray… ummm

vray_lowpoly.jpg
vray_lowpoly.jpg1000×700 93 KB

arnold render

arnold_lowpoly.jpg
arnold_lowpoly.jpg1000×700 82.1 KB

17

:frowning: hope there is a fix on the way

18

How this looks in corona? Is there any problem?

19

Vray’s bump (and normals imo) have been rooted for ages. One of the many reasons I now use corona. Corona’s bump mapping looks so good and is borderline a replacement for fine-detailed 2D displacement.

Edit: attached corona’s take on the situation.

coronabump.jpg
coronabump.jpg1000×650 62.7 KB

20

This might be the same problem: Bump map causes edge artifacts - Issues - Chaos Forum