Peter Aversten

Lead texture artist

Renderman 22 Lookdev using masks

Using masks or ISOs as we sometimes called them is a common theme in VFX. We use them to alter textures or to apply effects limited to regions. In my case I exported two ISO maps from Mari, one containing text and another RGB mask. I was planning to apply a noise pattern as a micro bump and use the mask to limit the bump to a specific region. I also wanted the flexibility to make the text color editable in lookdev so we can have different colours on the text or swap the text entirely depending on future needs. The asset is going to be used in the new channel intro for Meshmen Studio.

“Using masks to alter the look-dev is the bread and butter in the VFX industry”

Peter Aversten

ISO Tips For Texture Artists

A tip when dealing with ISO masks…before exporting them from your texture package is to overcrank them using the exposure and gamma sliders. You do this to check illegal values. It’s quite easy by mistake to choose a value near black or white. You really want to make sure your values are between zero and one in the ISO maps.

Another tip is to apply a clamp on your maps especially if you multiply or add values together on 16 bit channels. White looks white even if the value is 2 and if you use this mask in lookdev it can make life miserable for the lookdev artist.

Let’s take a look at how I used the masks  in Renderman to create the lookdev for this asset.

 


Conclusion

As you can see using a few ISO masks can get you pretty far and combining this with the round cube workflow I used in the previous episode can apply even more breakup to the lookdev without even using any “Real” textures.

you can download  Renderman non commercial and follow along….what are you waiting for?

 

 

“ISOs can save the day ”

PETER AVERSTEN

Mari 4 Mirror paint tool | Painting symmetrical in the Mari 4.2 update

Peter Aversten Lead Texture Artists Blogger Meshmen Studios Mari 4 Mirror Paint Tool Mari 4.2 is out with one of the most requested Mari features. Mirror paint and symmetrical painting has always been problematic and time consuming in Mari. I guess it's...

What is new in Mari 4 | Project setup

What is new in Mari 4 | New project setup Mari 4 new project window Mari 4 has a new and consolidated project setup procedure. The new window combines geometry channel and shader and light setup in one go. You can essentially just paint away once your project is...

Preferences in Mari

How to tweak Mari preferences and GPU Peter Aversten Lead Texture Artists Blogger Meshmen Studios Mari GPU Preferences The most seasoned Mari user might get lost in the preferences tab, I know I do sometimes. In this section i will try and disect some of the settings...

Mari filters | Non destructive node filters

Mari node filter workflow  Peter Aversten Lead Texture Artists Blogger Meshmen Studios Until Mari have filter nodes we can mimic a nondestructive filter workflow by utilizing bake visible to selected paint node and naming the nodes In this Video tutorial I take you...

The Projectors tab in Mari | Camera projections

Mari Projectors and Turntables in Mari3 Peter Aversten Lead Texture Artists Editor in chief Meshmen Studios Mari is all about projections as it a paintbuffer texturing program. In this tutorial we will examine the Projectors tab in Mari. This is the place where you...

Mari sharing layers workflow

Sharing layers in Mari 3 Peter Aversten Lead Texture Artists editor in chief Meshmen Studios Mari layer Sharing Sharing layers in Mari is an important way of keeping your paint up to sync. If you plan your channels and layers, then if sharing one layer into multiple...

Mari Modo bake workflow |

Using the Modo tab in Mari 3 Peter Aversten Lead Texture Artists Blogger Meshmen Studios Baking textures such as Occlusion, curvature and other geometry related textures have become the backbone in a modern VFX and game texturing pipeline! Mari have the option to bake...

Mari brush editor | make your own brush

Create your own brushes in Mari 3 Peter Aversten Lead Texture Artists Editor in chiefMeshmen StudiosCreating your own brushes or editing already existing ones In this tutorial we take a look on some of the settings you may want to alter when you create a brush and how...

Mari Node Graph | Procedural texturing

Mari Node graph procedural texturing Peter Aversten Lead Texture Artists Editor in Chief Meshmen Studios Procedural Texturing in Mari The node graph is the future, but as all node based tools there is always a trade of when it makes sense to use it. If all you do is...

Shaders in Mari | HDR shading

How to use Mari Shaders Peter Aversten Lead Texture Artists Editor in chiefMeshmen StudiosI use shaders in Mari as a preview for roughness and specular effects, you have a few to choose from both offline and realtime shading but I always ground my values in offline...

Layered Shading in Renderman 22

Peter Aversten Lead Texture Artists Blogger Meshmen Studios Layered Shading in Renderman 22 Layered shading in CGI is common practice when you want to go from one surface property to another. For example, if you have a metal object that was painted and...

Renderman 22 | Lookdev Using Masks | Workflow

  Peter Aversten Lead texture artist Renderman 22 Lookdev using masks Using masks or ISOs as we sometimes called them is a common theme in VFX. We use them to alter textures or to apply effects limited to regions. In my case I exported two ISO maps from Mari, one...

Megascans in Renderman 22 | using tiled textures

  Peter Aversten Lead texture artist Megascans in Renderman 22 Megascans from Quixel have become an important resource when creating material based texturing and lookdev. So what is Megascans you might ask? Megascan is texture sets with tiled images all in sync. They...

Renderman 22 textures | Using textures in renderman

Peter Aversten Lead Texture Artists Blogger Meshmen Studios Renderman 22 Textures Using textures is the bread and butter in 3D and likely you will have them in UDIM sequence when exported from Mari or Substance painter. Renderman utilizes special texture...

Renderman 22.1 | New Features

Peter Aversten Lead Texture Artists Blogger Meshmen Studios New features in Renderman 22.1 The new Renderman 22.1 was recently released with the heavily requested non commercial license as well as a number oif other really great additions. here is a...

Renderman 22 lights tutorial

Peter Aversten Lead Texture Artists Blogger Meshmen Studios Renderman 22 Lights Im my opinion the lights in later releases of Renderman have been one of the strong points, The Renderman 22 release is no exception. The lights are really easy to operate and the number...

Renderman 22 first impressions

Peter Aversten Lead Texture Artists Blogger Meshmen Studios Renderman 22 first impressions Renderman 22 is finally out in the wild for commercial customers, I'm one of them. The non commercial version will be released after SIGGRAPH . The Renderman 22 update brings...

Renderman Introduction

Peter Aversten Lead Texture Artists Blogger Meshmen Studios Renderman Introduction Renderman has always been regarded as the industry standard for rendering demanding visual effects. Personally I have used it since the beginning of the 2000s in numerous roles such as...