How Do I Render: Painted Rusty Metal (Renderman & Maya)

In this tutorial we'll look at a slightly more complex shading network, how to render a rusty pole with flaked away paint using only procedural textures.. This network has a lot going on and ultimately will give you a lot of control once set up. We'll have a look at bump mapping for detail as well as using scalar displacement.
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[@thom7080]

Great tutorial, really enjoyed watching it. Can't wait to see more

[@SmallRobotStudio]

Two new tutorials every week :)

[@xindiliu6819]

Very clean and nice tutorial, thanks man.

[@SmallRobotStudio]

You're welcome :)

[@maiwensanga9734]

i have a problem trying your method, do you know why when i put the layerpaint into the layer 2 it turn black? When i keep the layer rust as a baselayer and the layer metal as the layer1 it work but the visual isn t the same...

[@anastasiianefedova5797]

That's a great tutorial! However, I got a question about PxrInvert, can't fully understand why it should be plugged into Mask 2, or maybe a more general question: why it should be used/ what's the purpose of it here?

[@morezai3945]

you are amazing Michael :) very talented !

[@SmallRobotStudio]

Cheers Mo!

[@manisalguero]

Hi! is there any way to render default maya materials? Like Lambert, Blinn? or anyway to transform that lambert or blinn to pxr materials?

[@SmallRobotStudio]

+Mani Salguero materials are usually specific to their engine. If you're using Renderman it's best to use Renderman materials. Blinns and Lambert will render but not as efficiently and with the same level of control. PxrSurface is easily capable of the same surface qualities as either a Blinn or Lambert anyway.

[@manisalguero]

Small Robot Studio Thank You so much for your answer! The problem is that I have a project with a lot of nodes, textures, opacity maps, with lamberts and blinns but I have to render that with renderman, but it's only grey in the render :( Thank you! You have the best tutorials! :3

[@SmallRobotStudio]

Yeah I've got kind of bad news for you, you're going to need to re-route all of your texture and opacity maps into PxrSurface shaders to be able to render them correctly. It'll take some time depending on how many materials you need to convert but it's not impossible, I've had to do it before in pretty heavy scenes.

[@manisalguero]

Small Robot Studio hahaha Ok! So let's start! Haha thank you so much! 😊

[@AerysBat]

Really great results with this one!

[@iamlate5964]

What if I need to render a whole building made of rusty metal with lots of extrudes and faces removed? I tried to insert edge loops by only some edges but rendering start to be incredibly slow. Any suggestion, please?

[@SmallRobotStudio]

I wouldn't use displacements on a whole building as you're unlikely to be able to see the whole building or all the detail in any on shot. Normal maps should suffice and any close ups you could extract geometry and apply this shader to. This will make your scene a lot lighter and your render faster.

[@iamlate5964]

Ok. Thnks. Great tutorial anyway

[@Tritoon710]

Many thanks, please more like this stuff with Redshift.

[@SmallRobotStudio]

Thinking of ways to do this in Redshift at the moment!

[@ahboo2003]

I have a question. Why you have to set Base Layer (PxrLayerMixer) to zero and move base layer to Layer 1 instead?

[@SmallRobotStudio]

+Yi Zhao because the base layer input doesn't have a mask input like the other layers do

[@heatherburton2106]

Hi Michael! Thanks for this video recommendation! It helped with my distressed hurricane votive holder but the only other issue I'm running into is getting like a levels effect. The distressed part is mainly at the base of the glass and cuts off towards the middle. I need it to kind of fade but I'm not sure how to approach this. Any tips?

[@SmallRobotStudio]

Can you send me a link to a reference image and your render so I can get an idea of where you're at? Upload it to like Imgur or something and link it here

[@heatherburton2106]

@@SmallRobotStudio Sure! I'll send it, thanks so much for taking a look! Give me like 10 mins and I'll send you the link!

[@heatherburton2106]

@@SmallRobotStudio imgur.com/a/b7uvK5h

[@SmallRobotStudio]

Okay yeah I get what you're after. The only way to do this procedurally is if your UV's are aligned X/Y respective, then you can run a PxrRamp set to be black at one end and white at the other into your blend for whichever layer you want to effect .If it's already using a blend you can multiply that input with the ramp using a blend node. The ramp will work as a mask in the same way it does in this tutorial. Hope that makes sense?

[@heatherburton2106]

@@SmallRobotStudio Thanks so much, I think I understand. I’ll test it out later on today and see what I can do. I’ll let you know if I run into any hiccups along the way! I really appreciate the help I’m trying to finish up projects for my demo reel. I graduate later this month so any information and tips are great!

[@JapjeevSinghKohli]

The Best One Till Now! Gr8!😉

[@SmallRobotStudio]

Thanks Japjeev!

[@alexmouthon]

thank you very usely for me

[@etnlevel1286]

Thank you so much. You're awesome.

[@SmallRobotStudio]

No worries :)

[@Kaeden_Hahn]

So how can I do this without using Renderman

[@baconpantsable]

Step one, click on object. Step two, realize it's harder than you thought. Step three, curl up on the floor and cry as you realize you're about to fail college because of this.

[@matiasferrando_]

yuhuuuu