RMA Texture

Fefs

Hi I was looking in pinterest and saw some pbr textures from Clinton Crumpler, totally amazing textures and I never saw this RMA texture before (or at least not combined in this way).

So how I do this? Substance designer nodes? Or its all only one baking texture?

Please explain for me? Thanks!

DireWolf

Hard to pin point since there are so many approach. Converting photo to normal is my guess for these.

Ben Milette

an RMA texture is just the Roughness, Metallic and AO packed into the RGB channels of an image. I use Substance Designer myself, but you can use photoshop as well.

Shrike

DireWolf wrote: »

Hard to pin point since there are so many approach. Converting photo to normal is my guess for these.

Looking at the stones, there is no way this could ever be from photo to normal, those are very likely 3D sculpted and then baked down. Youll never get such normals from a bitmap to normal generator.



This is kinda what you get from a bitmap to normal generator, used the same stone image as base. The tool can not possibly interpret the geometry the rocks are supposed to take from a 2D grayscale bitmap, baking from a sculpt however transfers 3D data and thus the great result

@OP

Create various rocks or things in zbrush / mudbox / whatever
Make your arrangement of your objects onto a plane
Put everything into an Array or multi-replication modifier tool and adjust the stuff
so it is sure to be tiling in all directions (or just make somehow sure its tiling)
Merge highpoly objects (probably not needed depending on tool)
Export highpoly into xnormal
Export plane into xnormal as lowpoly
Bake from highpoly to your plane

Edit: that only describes your baking process, from that you get your AO, curvature and cavity per example, of which you usually base your texture work, which you could continue then in substance or ndo2 or photoshop to get this kind of result

Eric Chadwick

We have info about this process (packing different maps in RGB) here on our wiki:
http://wiki.polycount.com/wiki/ChannelPacking

Also if you're interested in creating normal maps like these, see:
http://wiki.polycount.com/wiki/EnvironmentSculpting

Fefs

Thanks I understand now! I'll try to do a texture like this and later I show the results ^^.

I searched only for rma texture in the wiki and nothing appeared, thanks for finding this page!

Eric Chadwick

OK, added a page for RMA. Thanks!

RN

On the subject of sculpted environment textures, this artist shared his workflow:
http://www.gamedev.net/topic/665118-my-3d-textures/#entry5208163

Eric Chadwick

Kryzon wrote: »

On the subject of sculpted environment textures, this artist shared his workflow:
http://www.gamedev.net/topic/665118-my-3d-textures/#entry5208163

Q: Looks very realistic. How much total time do you usually spend in making one texture?

A: It takes 2-3 weeks for one texture.

Lol wow. :poly144:

Fefs

Wow, I'll get to that point (someday!), and thanks for sharing this, so cool those roof tiles!

Now I will show the first result I got with my own rma texture (this was a very quick texture, it need much more work yet.)

So please take a look... It's suppose to be like this? Right?



Thanks again! ^^

clinington

There's lots of good examples of PBR textures in other threads on the forum and some artists have even been generous enough to share their files. stevston89 shared their files in this post: http://www.polycount.com/forum/showthread.php?t=135431 for a PBR dagger. The download contains all of their PSDs and also their toolbag 2 scene.

It helped me a lot to look at this stuff when I was learning PBR so may be of some use!

Mcbeardo

How can one texture take three weeks? Thats an insaine amount of time. Id say at most two days.

I wonder whats taking 2-3 weeks...

An employer wouldnt agree with that timeframe :P

throttlekitty

Mcbeardo wrote: »

How can one texture take three weeks? Thats an insaine amount of time. Id say at most two days.

I wonder whats taking 2-3 weeks...

An employer wouldnt agree with that timeframe :P

Check the link Eric posted, they're modeling (not sculpting) each rock based on the image.

Eric Chadwick

Well to be fair, that's a hobbyist who has stated they're doing it for pleasure only. Not a work for hire. So I see no harm in taking a long time, if you really are just there to enjoy the process. I would think it's akin to a model ship builder, threading all the rigging on their 2-foot wooden sailing ship.

Mcbeardo

I did throttlekitty, i also read its his hobby. I might take that up aswell. Always looking for a new hobby.

cmc444

Yeah RMA was just the name I gave to the texture for its use in UE4. Roughness, Metalness, Ambient Occlusion packed into one map.Sometimes I use the alpha channel for the emissive or whatever I need an extra slot for

As for clarification on time those textures took me about 1-3 hours to get to final using some quick bake downs in zbrush, maya and xnormal. Most the magic happened at the end in compositing in Photoshop.

Have an example concrete slab texture on gumroad for free for you guys if you wanna check it out.

https://gumroad.com/ccrumpler
Free with code: polycounters


@ Eric Chadwick
Id be happy to give a breakdown image if you wanna add it to the wiki page

Eric Chadwick

Sure, if it explains your techniques well.