blur mask in material context

[hannes603]

Hey Guys, i want to blur a mask in matnet, any idea how that can be done in an easy way ??

Thanks in advanced 

 

blurinmatcontext_how.hip

[tamagochy]

Use fit not compare

[hannes603]

18 hours ago, tamagochy said:

Use fit not compare

Haha yes i know. its just an example. In my scene i have no option.

[animatrix]

If you want to do blurring at material level, you can evaluate the noise at different positions using slight offsets just like derivatives and then average all of the noise outputs and use that instead but it will increase the noise evaluation cost by the number of your samples.

[hannes603]

16 hours ago, animatrix said:

If you want to do blurring at material level, you can evaluate the noise at different positions using slight offsets just like derivatives and then average all of the noise outputs and use that instead but it will increase the noise evaluation cost by the number of your samples.

Hi, thanks a lot. Can you create a little example scene and upload it here for me to see. That would be amazing

[Librarian]

@hannes603 Have you seen this?
https://vfxbrain.wordpress.com/2018/08/28/gather-vex-function/
 

[hannes603]

16 hours ago, animatrix said:

If you want to do blurring at material level, you can evaluate the noise at different positions using slight offsets just like derivatives and then average all of the noise outputs and use that instead but it will increase the noise evaluation cost by the number of your samples.

thanks. i think i got something thanks to you

blur_smooth_in_mat_network_shader.hip

[animatrix]

On 1/12/2024 at 3:54 PM, hannes603 said:

Hi, thanks a lot. Can you create a little example scene and upload it here for me to see. That would be amazing

Here is a basic example:

smooth_shader_by_derivatives.hiplc

[hannes603]

18 hours ago, animatrix said:

Here is a basic example:

smooth_shader_by_derivatives.hiplc 636.5 kB · 2 downloads

nice. i put everything in a for loop , works for me .

Blur_smooth_noise_in_matnet_material_foreach.hip

Edited January 15, 2024 by hannes603