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Sculpt & texture a fearsome orc

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Date Added: 7th September 2018
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Michael Robson takes us through the process for creating his fearsome orc, with a focus on skin shaders, using ZBrush, Mari, Maya, 3ds Max, Substance Painter, V-Ray, and Ornatrix...


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Hello, my name is Michael Robson and I'm a 3D character artist. In this tutorial, I'm going to take you through the process that I used to create this fantasy character. The main goal of this project for me was to learn a bit more about skin shaders, and since I'm a big fan of the fantasy characters and creatures, the orc was my first choice. The concept is inspired by Dave Rapoza "Orc Portrait" and a lot by ILM orcs from the "Warcraft" movie.

Choosing a concept and gathering references

This step is one of the most important parts of the entire project; good references will provide a better direction when it comes to modeling, texturing and shading your model. This is one of the steps that I spend most of my time on. The method that I use is to break the concept into a few parts (anatomy, fur, metals, skin, bones, and eyes) and since the concept has armor that's a bit blurred, I researched another concept where the artist had a similar design for his armors.

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References

Sculpting the initial shapes

Starting with a basic sphere, the first step is to turn on Dynamesh so we have more freedom to move things around without being concerned about the topology. I slowly start to shape the head and add the main features of the face, like the eyes, ears, mouth, and after that, I move to the torso. When I'm happy with the primary forms and sure that there will be no big changes, I use zremesher to get a better topology and work with the refinement.

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Sculpting the initial shapes

Modeling the armor

When I'm happy with the overall shape of the character, I start to mask, extract and block the shape of the armor in ZBrush to use as a base for retopology in Maya. Some other pieces were just poly modeled from primitives. In this step it is very important to keep the concept close to you, especially for the little pieces.

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Modeling the armor pieces

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Retopology

For the retopology, I export a decimated version of the base mesh sculpted in ZBrush and with quad draw, I start to rebuild the geometry on top of the sculpt. Usually, the areas such as the eyes, mouth, and nose have a bit more geometry; they mimic a bit the flow of the facial anatomy.

TIP

If you are doing a retopology in symmetrical mesh, you can mirror one side to another, this way you can save a lot of time.

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Retopology

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UVs

After I finish all the retopology, it's time to unfold the UVs. My personal preference when it comes to this task is to use Maya - the UV toolkit handles the job very well and it is very easy to use. In this particular model, I combine the pieces that repeat, such as the shoulder armor, the little golden piece holding the hopes in the shoulder, and so on, and later I created a different texture variation for each one.

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Uvs

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Uvs Wireframe

Details

My favorite workflow to this part of the process is to always work with layers. The reason is that they are non-destructive, so I can experiment with different techniques on a separated layer, and if I don't like it, I simply delete that layer without losing the detail from the previous one.

I like to separate my layers into different kinds of detail, such as a break from the symmetry (it's always good to break the symmetry into organic models, especially faces as this makes them look more interesting), a layer for an initial noise on the skin, another layer for a skin displacement projection, and finally another layer for scars and other imperfections. I do the same process for the armor.

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Extract maps from ZBrush

Once I'm satisfied with the details, it's time to extract some maps from ZBrush. Those maps will help us achieve a higher level of detail into the low poly model. I usually extract the displacement and the normal map, and sometimes I also extract the cavity for a better skin detail.

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Creating the light in 3ds Max

Light is very important. You can tell history through light, so spend some time doing research about light and photography. For this character I start with a basic three point light setup, and adjust it a little; it consists with a key light, fill light, and back light.

QUICK TIP

At this point it is always good to create a dummy; this tool will help us to rotate the model with all the pieces at the same time without flying away from the model. Another cool thing about this, you can test multiple render views easily.

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Lights

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Dummy

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Light render test

Texturing the character

For texturing I use Mari and Substance Painter. I begin using polarized photos of human skin (the reason we use polarized photos is because they don't have any reflections, so we will only get the color and detail information of the skin) and project it using Mari directly on the model. After that I move to Substance Painter and start to add dirt to the skin. Substance has some awesome tools for this task and my favorites are the smart masks and procedurals.

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Textures

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Shaders in 3ds Max

For the skin shader I use VrayALSurfaceMtl. This is a Sub Surface shader and it's very accurate when mimicking the skin surface. To make this shader work correctly, make sure your model is set to a correct scale in the real world. Here I adjust the raw shader first and then I load the maps that were painted in Mari and Substance Painter. For the armor, I use a simple VrayMtl.

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Hair with Ornatrix

For the hair, I use a plugin called Ornatrix (it is available for 3ds Max and Maya). The first thing we need to do here is to create a base for the hair, to do that, simply select some polygons on the areas that you want the hair to grow from and detach it; it is always good to select a bit more around the area, for safety purposes.

After that, I apply a symmetry modifier to the other side and start using the Ornatrix modifiers to grow and stylize the hair. When I'm satisfied with the result, I add on top an OX render setting and VrayOrnatrixMod, so we can render the hair in V-Ray. Now we just need to render the entire character.

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Final render

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Related links

Michael Robson on ArtStation
Michael on Instagram
Michael on Facebook
Grab a copy of ZBrush Characters & Creatures

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Readers Comments (Newest on Top)
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Joe on Tue, 11 September 2018 1:50pm
Basically, what you pass here, is what Miguel CBT taught you in his course, character cinematic for production, where I'm in too.
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