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Petros Proestos avatar image
Petros Proestos asked ·

Holes that randomly disappear with OSL

I don't know how to describe it...

I want to have an effect like this:

I mean i want the holes that randomly disappear from the top to the bottom...

I am using Mad's shape OSL shader and a gradient map, but of course

I cannot archive the effect I want...

Any help I appreciate a lot. thx.

**My solution that is...not a solution:

ramprage-1.jpg (241.2 KiB)
osl.jpg (480.8 KiB)
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Mads Drøschler avatar image
Mads Drøschler answered ·

One way of doing it.

Update: added 2020 file.


ee.png (28.8 KiB)
qq.jpg (212.3 KiB)
tiles-2020.zip (48.6 KiB)
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Mads Drøschler avatar image
Mads Drøschler answered ·

Like this, open gif full to inspect details.

Change the defaul Catmul rom interpolation to linear for point 0 and 1.


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Mads Drøschler avatar image
Mads Drøschler answered ·

It can be improved to be fail safe from the curve, you need to handle the float values delecatly.
Implementing a step curve will fix this. Also known as posterize.


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Mads Drøschler avatar image
Mads Drøschler answered ·

You want to utilize the simple tiles instead, that has ID.
Then let a ramp over v dictate probability to print a hole.

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Petros Proestos avatar image
Petros Proestos answered ·

@Mads... how many THANKS again... Every time I have a shader challenge to do, seems impossible till you answer... :)

I will try to understand the mecchanism later on... :)

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Petros Proestos answered ·

not being able to do it... :)

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