Set one or more of these in the config to turn the related option on:

mip_map = 1
anisotropic_filter = 1
bilinear_filter = 1
trilinear_filter = 1

- Don't select blocks for drawing in every frame
- Sort meshbuffers by material before drawing

Switch the license to be LGPLv2/later, with small parts still remaining as GPLv2/later, by agreement of major contributors

Fix getVisibleBrightness() to return sunlight visibility correctly even if not much of world has been loaded