World Renderer

Frustum culling
- 2 algorithms
  - Fast one (old one): Only tell if it could be in the frustum
  - -> If yes (or no; depends on algo) use complex one to check
- extreme chunk section values (most east[…] block; highest block; lowest block)
- "Cave algorithm"
2 Meshes per section (opaque; transparent)
Preparing in nearer to further away order
- unload meshes if block changed and not in frustum
- only prepare if chunk is in frustum
- don't prepare empty chunks
Light
- Client side light engine
- Lightmap
Transparency
- Sort faces
water logged & FluidFillable properties
Force interrupt preparing if needed (e.g. new block change; light change; more important task in thread pool)
"Resolving" of block models
Chunk cache clearing (default F3 + A)
- Respawn
texture animations
require neighbour chunks loaded
- Also don't load if block changes in chunk (e.g. when movement is disabled and walking to chunk border)
View distance
- Server side
- Client side
Rewrite renderers
Check neighbor positions
Cache biomes
"Fast biome" in 19w36a+
Improved biome blending
Performance optimizations
- Don't render bedrock on y == dimension::minHeight