how to do non squared material UV tiling in SD ?

SebKaine

Hi guys, 

I would like to know how to do UV tiling at shader level in SD.
I don't want to do texture tilling that would lower my texture resolution.
At the moment i can only use in the 3d view  Material > Default > Edit > Tiling

  

But it only give me a uniform square ratio.
I need to be able to set custom X, Y value like (3,15) for exemple.

Is it possible to do this ?

Thanks for your time.
Cheers 
E

Jerc

You would need to expose the X and Y parameters separately in the shader settings. That can be done by editing the shader files in 
C:\Program Files\Allegorithmic\Substance Designer\resources\view3d\shaders

SebKaine

Many thanks for your help Jerc, I'm quite new with SD. 
Could you please tell me, if these are the one to be edited to get this works  
- with the Metallic / Roughness workflow 
- with OpenGL / Iray preview 





Thanks again.

EDIT:

I have try to replace  in fs.glsl

uniform float tiling = 1.0;

by 

uniform vec2 tiling = vec2(1.0, 1.0);

But it doesn't work,

SebKaine

Ok it does work for OpenGL by modifying the 2 files attach.

in fs.glsl

uniform vec2 tiling = vec2(1.0, 1.0);

replace 

uniform float tiling = 1.0;

in parallax.glsl

<div>vec2 updateUV(&nbsp;..., in vec2 tiling)</div>

replace

<div>vec2 updateUV(&nbsp;..., in float tiling)</div>

Thanks a lot ! now i need to make it work for iray.

SebKaine

@Jerc > How would you do to edit an .mdl file ? i have try to open them in SD without succes. What am i doing wrong ? 
Thanks again for your time.

Jerc

Only MDL files that were created in SD can be opened in SD. Regular MDL files are very similar to glsl files and can be edited with a simple text editor.

SebKaine

Thanks again for your help Jerc. I have succesfully open all the .mdl with a text editor, but the synthax is pretty weird and i haven't find where i need to edit the thing. It doesn't look like a shader that much , but more something like a weird xml declarative stuff. I think i'll pass on this and stick with the glsl preview.

Jerc

Indeed, looking at it now, it seems like the tiling is hardcoded whenin Iray, the setting is not exposed in the mdl file.

SebKaine

Thanks for the info Jerc !