QuickSort

1. QuickSort

• Why Important: QuickSort is one of the fastest general-purpose sorting algorithms for large datasets. It works in-place and has an average complexity of O(N log N).
• Where It’s Useful:
  • Sorting large datasets like vertex buffers, meshes, or texture indices.
  • Preparing data for draw calls: Sorting objects by material, shader, or texture to minimize state changes on the GPU.
  • Sorting elements for visibility or depth-sorting in transparent objects.

Example:

• Unity and Unreal sort renderable objects back-to-front or front-to-back using QuickSort for transparency or depth optimization.