Substance Designer - Create texture from atlas

gestoryscht

Hi guys,

I have a texture atlas of loose dry grass blades and I want to combine these to a hay texture.
I've loaded the textures into SD and thought I could use the crop tool for it and splatter all the different pieces randomly with the tile sampler.

But here comes my problem - how to do this?
After croping, obviously the output is stretched all over the full square dimension. THats my first problem.
To 'solve' this stretch I squished the texture to a more reasonable ratio, but this isn't very accurate.

The second problem is the tile sampler - is it even possible to feed it with non-square textures?
I thought Non-Square Expansion is what I was looking for, but it doesn't changed the stretch.

THanks for your help

poopipe

Non square expansion refers to the graph size

It would be simplest to make your cropped bits into squares before plugging them into the tile sampler. Use a transform node with no tiling to squash them to the right aspect ratio. 

zachagreg

Have you looked into using the atlas splitter in the most recent designer release? That thing has been amazing for doing foliage scans in my workflow as of late

gestoryscht

Woah - that's witchcraft
That's exactly that what I was looking for and it's really a timesaver.

Thanks for the hint

gestoryscht

Sadly this node is scale dependent
When I choose another resolution, I get totally different results.

Workaround - don't change the scale of the input

zachagreg

That makes sense as the node is most likely based off of the input resolution and changing that would in turn change the index at which it is recognizing and outputting each piece