Optimizing draw calls

One critical aspect of optimizing VR applications is reducing draw calls, which are commands sent to the GPU to render a mesh. The number of draw calls can quickly add up and have a significant impact on performance.

To optimize draw calls in your VR experience, follow these steps:

1. Combine meshes using Blender or Maya to reduce the amount of faces to render for each asset:
   1. In Blender, select all objects you want to combine and press Ctrl + J. The last object selected will be the new origin.
   2. In Maya, select all objects and go to Mesh | Combine.
   3. Save the combined mesh as a separate file for easy editing later on.

Note

This step is only helpful for performance when the combined meshes share the same material.

2. Share materials among different GOs to achieve good batching. This reduces the number of unique instances and allows for more efficient use of resources.
3. Use a single material with a texture for coloring different parts of an object...