Chaos Corona Forum

Chaos Corona for 3ds Max => [Max] Bug Reporting => [Max] Resolved Bugs => Topic started by: vicnaum on 2013-03-06, 07:30:09

Title: Checker map doesn't work on Bump
Post by: vicnaum on 2013-03-06, 07:30:09

Simple 3dsmax Checker map, with two striped gradients in slots.

When I apply it to Diffuse, it looks okay:
(http://www.naumik.com/temp/scr3/20130306-odg-127kb.jpg)

But when I drag it into the Bump slot, then here's what happens:
(http://www.naumik.com/temp/scr3/20130306-1h0-101kb.jpg)

On one checker - two gradients get mixed, and the other checker looks like it's empty.

Same happens to noise+gradient in checker slots, two bitmaps in checker slots, etc...

(http://www.naumik.com/temp/scr3/20130306-q93-203kb.jpg)

(Corona Alpha 3)

Title: Re: Checker map doesn't work on Bump
Post by: maru on 2013-03-06, 11:28:28

Good old blur bug?

Title: Re: Checker map doesn't work on Bump
Post by: Levian on 2013-03-06, 16:43:47

Can I put my bump values ​​above 1? or it can lead to artifacts? Sometimes the value of 1 is very small.

forgive me for my English translator.

Title: Re: Checker map doesn't work on Bump
Post by: Ondra on 2013-03-06, 20:40:56

Quote from: Levian on 2013-03-06, 16:43:47

Can I put my bump values ​​above 1? or it can lead to artifacts? Sometimes the value of 1 is very small.

forgive me for my English translator.

yes, the artifacts arise from a combination of factor, not this single one. You can also set max normal difference in general render settings to higher number, because it acts as a upper limit of how much is bump allowed to change a normal.

Title: Re: Checker map doesn't work on Bump
Post by: vicnaum on 2013-03-09, 17:14:18

What does blur has to do with that?

Here's the scene for test: https://dl.dropbox.com/u/9944031/checkerTest.max


Here's the Checker map in the Diffuse slot:
(http://www.naumik.com/temp/scr3/20130309-ad7-89kb.jpg)

And here's the same Checker map put in the Bump slot:
(http://www.naumik.com/temp/scr3/20130309-bo0-47kb.jpg)

I guess it's obvious that half of the squares just dissapeared, and the other ones have two textures rendered mixed (Cellular+Gradient).

Title: Re: Checker map doesn't work on Bump
Post by: Ondra on 2013-03-09, 23:25:08

I am fairly sure this is a bug in the checker map, same thing happens in scanline:
(http://i.imgur.com/tRn2keF.png)