Sky Pro Optimizes Cloud Rendering with Occupancy Grid

@dangreenheck· June 18, 2026 View original

Summary

A developer is implementing an occupancy grid for Sky Pro to significantly optimize cloud rendering performance. This technique allows the system to bypass texture lookups and cheap calculations in empty areas, aiming for much faster cloud generation.

A developer is working on a significant optimization for the Sky Pro rendering system, specifically targeting cloud generation. The enhancement involves integrating an occupancy grid, which functions by identifying and skipping computations in empty or transparent regions of the scene. This initial implementation is described as conservative, but the goal is to achieve substantial speed improvements for rendering clouds.

Why it matters

Optimizing rendering performance is crucial for applications requiring high-fidelity graphics, such as games, simulations, and visual effects, as it directly impacts frame rates and user experience.

How to implement this in your domain

  1. 1Investigate occupancy grid techniques for optimizing rendering pipelines in your own graphics projects.
  2. 2Profile existing rendering systems to identify bottlenecks, particularly in areas with sparse data or empty space.
  3. 3Experiment with conservative initial implementations of optimization techniques and iteratively refine them for better performance.
  4. 4Apply similar spatial partitioning methods to other computationally intensive tasks in 3D environments.

Who benefits

GamingFilm & AnimationArchitectureSimulation

Key takeaways

  • Occupancy grids can significantly boost rendering performance by avoiding unnecessary calculations.
  • Skipping texture lookups in empty space is a key optimization strategy.
  • Iterative refinement of optimization techniques is essential for achieving desired results.
  • Spatial partitioning is a powerful concept for graphics and other computational tasks.

▶ The 60-second brief

Original post by @dangreenheck

"Finally taking time the time to unlock the last level of optimization for Sky Pro by computing an occupancy grid. By checking against the grid, it allows you to skip texture lookups / cheap calcs in empty space. This is the first-pass so it's overly conservative, but hoping this…"

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Sky Pro Optimizes Cloud Rendering with Occupancy Grid

Originally posted by @dangreenheck on X · view source

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