Arcane University:Mesh Polycount Comparisons

The art of video game modelling can be summed up as doing more with less. Unlike our counterparts in the cinematic industry that can have infinite polygon counts, we are very tightly constrained in how much detail can be handled by either the player's computer or the game engine at any given time. This article functions as a point of reference for modelers to see what the average polycounts are, and what we should aim for in our endeavors.

Basics

Polycount is short for polygon count. In 3D modeling, it refers to the number of polygons any given model is comprised of. This is shown in the following image:

It shows the difference between high and low polycounts, as every next mesh has approximately twice the number of polygons (tris, in this case) of the previous. However, it also shows that how many polygons you need depends on the shading - for the "smooth" shaded meshes, there is no clear distinction of the polygons after approximately 1000 tris. On the other hand, for flat shading, there is still improvement possible at the last mesh. This principle is also used in normal maps, but these are not the focus of this article. The image also shows how there can be diminishing returns - after approximately 1000 tris, there is no real improvement in the smooth shaded meshes.

Triangles

Most game engines still use "triangles" as the default shape for rendering 3d models, and the term is used interchangeably with polygons in this article. This is both dangerous and blasphemous, but is a good thing for every modeler to learn. Because of the quality and efficiency of modern 3d modeling programs, most modelers work in polygons. But what you see as polygons, Skyrim sees as a series of triangles, simply due to the way these game engines process and render data. The difference between them is illustrated:

Rectangle	6 polygons	12 triangles
Chamfered box	114 polygons	204 triangles
Rounded Cylinder	108 polygons	192 triangles
Sphere	512 polygons	960 triangles

You can see that these numbers almost doubled, but the level of detail didn't actually change. This isn't something to fear, but rather something to keep in mind while you work. Most modern modeling programs can display your triangle count next to your polygon count, so you can keep an eye on what you are doing. Better to be cognizant of the level of detail, rather than having a 3D mesh modeled in polygons that looks like 15k to you, but ends up being 30k to the game engine. And while 30k isn't all that much (or may not seem like much), throwing too many of them at the screen at any given time will result in performance losses.

Skyrim Counts

For Skyrim Classic Nifs, triangle counts can be found under NiTriShapeData. For SSE, the triangle count can be found within BSTriShape (for non-rigged meshes), or within the NiSkinPartition (for rigged meshes), within Partition > Partition.

Armour

Daedric

• Boots: 868 tris
• Chest: 4880 tris
• Gloves: 2232 tris
• Helmet: 1254 tris
• Total: ~9200 tris

Dwemer

• Boots: 1504 tris
• Chest: 4049 tris
• Gloves: 3208 tris
• Helmet: 1514 tris
• Total: ~10300 tris

Nightingale

• Boots: 1652 tris
• Chest: 4838 tris
• Gloves: 1698 tris
• Helmet: 1142 tris
• Total: ~9300 tris

Jewelry

• Gold Necklace: 288
• Gold Diamond Necklace: 336
• Gold Jeweled Necklace: 400
• Amulet of Mara: 434
• Amulet of Stendarr: 500
• Gold Ring: 140
• Gold Diamond Ring: 234
• Ring of Hircine: 184
• Jade and Emerald Circlet: 510
• Silver and Moonstone Circlet: 516
• Gold and Ruby Circlet: 478

Creatures

• Alduin: 15896 tris
• Chicken: 650 tris
• Mammoth: 5030 tris
• Falmer: 5494 tris

Misc

• Barrel: 396 tris
• Dwemer Chandelier: 3710 tris
• Flora - Mushrooms: 1883 tris

Weapons

Daedric

• Battle Axe: 1644 tris
• Mace: 2162 tris
• Bow: 2360 tris
• Great Sword: 1192 tris

Dwemer

• Battle Axe: 3227 tris
• Mace: 1922 tris
• Bow: 4068 tris
• Great Sword: 2844 tris

Iron

• Battle Axe: 1159 tris
• Mace: 1828 tris
• Bow: 2152 tris
• Long Sword: 1019 tris