Meshlet tracking issue

[JMS55]

Current TODOs🔥:

• Fix HIZ generation
• Cleanup CPU code and improve CPU performance
• Renaming the feature away from meshlets

Tooling:

• Asset processor for mesh -> meshlet mesh conversion
• Debug stats + visualizations
• Docs

Materials:

• UV arithmetic shader functions with derivative propagation
• Compute-based material shading
• Variable-rate shading (compute shader based)

Misc:

• Single set of passes to render all views at once
• Streaming
• Meshlet triangle compression
• Disk-oriented compression
• Automatic quantization factor (read the gpuopen article)
• UV-aware LOD selection
• Normal and UV compression
• Multi-mesh simplification with meshlets having more than 1 possible material

Low priority:

• LOD bias for shadow views
• Try to avoid the bounding sphere bloat from enforcing monotonic bounding spheres for LOD selection