# Optimize Number of Nodes

A reduced number of nodes lead to fewer node-related render state activations that have to be processed. Thus, whenever geometry can be safely combined to a single node like e.g. a mesh, then this way should be favoured. For instance a tire and a rim form a logical group sharing the same transformation. In that case the designer can unify separate geometries in a single mesh with the aid of a digital content creation (DCC) tool.   
Consequently, the rim and tire do their texture lookup in a single texture, which further leverages performance gains by texture caching.

<div drawio-diagram="1801"><img src="https://doc316en.candera.eu/uploads/images/drawio/2023-02/drawing-4-1676619365.png" alt=""/></div>

<div class="contents" id="bkmrk--0"><div class="contents"><div class="textblock"></div></div></div>See below crucial prerequisites for combining Nodes:

<div class="contents" id="bkmrk-nodes-share-same-tra"><div class="contents"><div class="textblock">- Nodes share same transformation (position, rotation, scale).
- Nodes share the same Appearance (textures, shaders, material, render-mode, render-order)
- Nodes are within the same render-order bin.

</div></div></div><div drawio-diagram="1803"><img src="https://doc316en.candera.eu/uploads/images/drawio/2023-02/drawing-4-1676619452.png" alt=""/></div>

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