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Hash, Inc. - Animation:Master

Shading artifact


threedslider

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  • Hash Fellow
4 hours ago, threedslider said:

I have seen a model from sample as character on the face has some shading artifact ? Why? Can we eliminate this artifact by a better modeling ?

There are many possible reasons. We'd have to see the example to know more.

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  • Hash Fellow

KeeKat!

I presume you are asking about the transparent patches with the "whisker" dots. That seems to be a real-time graphics bug that is new to v19.5.

The model will render correctly in Final renders but for real-time viewing try either of these...

- Edit the Percentage value of the "KeeKat-whiskers-COL" image to be 99.9% instead of 100. You can save a new version of KeeKat if you wish.

image.png

(to see that parameter in the PWS you will need to enable "Show property triangle" in the Tools>options>Global Tab... see below)

0r...

 

- In the Tools>Options>Global Tab change from OpenGL3 to OpenGL
image.png

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Thank you for your tips :)

Yes, not only transparent but shading not smoothly in some corner as here :

eddie.png

From nose, there is some artifact so not smooth... But as you say it is a problem of OpenGL not final to rendering thought...

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  • Hash Fellow

Eddie and KeeKat have been around forever so they may not represent the ultimate best in splining. Careful adjustment of the CP biases would eliminate that lumpiness.

It is also possible that When they were made, the default shading of splines was somewhat different (see the Biased v Perpendicular below)

This post has a video about bias editing...
https://forums.hash.com/topic/44047-smartskin-question/?do=findComment&comment=379014

 

One quick fix is to select a Group and set Average Normals ON and set the Normal Weight to something higher than 0%

0 is the most accurate shading of the splineage, 100 the smoothest.

image.png

 

Another gambit is to switch the group from "Perpendicular Normals" to "Biased Normals".

image.png

 

A brief video about Biased v. Perpendicular can be found here...
https://forums.hash.com/topic/39863-asymmetry/?do=findComment&comment=349256.

 

"Perpendicular Normals" and "Biased Normals" are optional tools that you can add to a toolbar. This tutorial show how to edit toolbars...

https://forums.hash.com/topic/45739-creating-and-editing-custom-toolbars/

 

 

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