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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. | 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 == | == Basics == | ||
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| − | + | '''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: | |
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| + | [[File:Polycount_Shading_Comparison.png|Showing the the difference in polycount for various spheres, for both smooth and flat shading|1400px]] | ||
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| + | 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 == | == Triangles == | ||
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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: | 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: | ||
| − | + | [[File:PolygonWireframe.jpg]][[File:TriangleWireframe.jpg]] | |
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{|class="wikitable" | {|class="wikitable" | ||
| − | ! | + | !Rectangle |
|6 polygons | |6 polygons | ||
|12 triangles | |12 triangles | ||
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|} | |} | ||
| − | 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 | + | 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 == | == Skyrim Counts == | ||
