But automation is something to consider on larger projects. This newer method can be much more difficult to achieve, so at first you may be better off manually creating your LODs. This can procedurally optimize models in real time.
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Some modern shaders no longer require manual creation of LODs, having the ability to change the rendered geometry within the GPU. Remember that game engines generally prefer power of 2 textures, so make sure you follow those rules when resizing images. Then keep cutting the resolution in half as needed. Making LODs out of textures is a much simpler process.Įxample: if you’re using a 4096×4096 for LOD0, simply save a version as 2048×2048 for LOD1. However, this can ruin your UV’s and damage your model depending which you use so it’s always best to test and keep backups of your work.
Most 3D packages have optimizing options which are also worth trying. You could also manually remove loops of polygons to decrease the count. If you are using some variation of turbosmooth switch this off for your LODs. Some engines such as Unreal Engine 4 even have the built-in functionality to automatically create LODs out of the textures you use, which saves a lot of time.Ĭreating LODs is a fairly simple process.įor your model you simply have to remove some of the geometry. Most modern real time engines have the built-in functionality to support LODs, so the only thing you really need to do is point the correct models in the LOD numbers and designate the distance from the camera. This is considered to be an undesirable result that is tried to be avoided.
They can be occasionally noticed in what is called “pop-in” when the change happens too close to the camera and an object seems to slightly change very fast. LODs are used in any AAA 3D game you’ve played. From there LOD1 is a lower detail version, followed by LOD2, etc.
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LOD0 is the full detail model that is viewed closest to the camera. LODs are usually numbered within the real time engine that you use. These are the geometry (polygon count) and the texture resolution (lower resolution textures = smaller file size). There are generally 2 parts of the model that get optimized for LOD. This lowers the strain on the computer allowing it to render more objects while maintaining a high frame rate.
LOD stands for level of detail, and it’s the process of making less detailed versions of your models that are viewed when they’re further away from the camera. That means if you buy something we get a small commission at no extra cost to you( learn more) Tips 3D Written by Thomas Denham Disclosure: This post may contain affiliate links.
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