WIP: Protochunk rendering - addresses #2002, #2024, #2035

[ralokt]

This PR addresses (and most likely fixes) #2002, #2024, and #2035. It does so by:

• Adding the following config options:
  • render_protochunks
  • prettify_protochunk_lighting
• When render_protochunks is enabled, also rendering chunks with a status of "empty" or "structure_starts".
• When prettify_protochunk_lighting is enabled, attempting to fix lighting issues with dark border chunks
• Adding documentation for these config options

Caveats:

• Worlds and RegionSets now need to remember these config options, as the change must be made there
• The config options are currently global because that was easier (making them per render would have required significant refactoring)

Reasons why this PR is a draft:

• I haven't checked for broken tests yet
• I haven't done a complete render using a config file - since my local dev setup was simplistic, I just locally changed default values to test their impact.

Nevertheless, some previews!

render_protochunks=False, prettify_protochunk_lighting=False (equivalent to current):

render_protochunks=True, prettify_protochunk_lighting=False:

render_protochunks=True, prettify_protochunk_lighting=True:

The world I used for rendering is attached here:
mcov-test-118chunks-118-forceupgrade.zip

I made it by creating a new world in 1.17, teleporting to x/z=0/1024, teleporting back to 0/0, reopening the world in 1.18, and then optimizing it.

I am also re-rendering https://map.wurstmineberg.de with these options enabled, although that will take a few days.

[ralokt]

Sorry for not making this a proper draft - I'm used to GitLab, where that is determined by the name of the MR. Seems like it's too late to make this a draft now, meh.

[Wunkolo]

You can still turn it into a draft in the Reviewers section on the top-right of the PR. Took me some time to figure out too. The button just isn't super obvious as it looks like non-clickable text.

[ralokt]

Thanks a lot! Done :)

[ralokt]

Scratch that, I have a better idea. PR with proper fix incoming!

[ralokt]

Superseded by #2051