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MeshUpdateQueue: Add a MapBlock cache that minimizes the amount of MapBlock copying done in the main thread

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Cache size is configurable by the meshgen_block_cache_size (default 20 MB).

New profiler stats:
- MeshUpdateQueue MapBlock cache hit %
- MeshUpdateQueue MapBlock cache size kB

Removes one type of stutter that was seen on the client when received MapBlocks
were being handled. (the "MeshMakeData::fill" stutter)

Kind of related to at least #5239

Originally preceded by these commits, now includes them:
- Move the mesh generator thread into src/mesh_generator_thread.{cpp,h}
- mesh_generator_thread.cpp: Update code style
- MeshUpdateThread: Modify interface to house a different implementation: Actual functionality will be changed by next commits.
- MeshMakeData: Add fillBlockData() interface (so that caller can fill in stuff from eg. a MapBlock cache)
This commit is contained in:
Perttu Ahola 2017-04-15 10:55:52 +03:00 • committed by celeron55
parent 4323ad163f
commit 04cc9de8f2
12 changed files with 526 additions and 278 deletions
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1
src/defaultsettings.cpp
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@ -39,6 +39,7 @@ void set_default_settings(Settings *settings)
settings->setDefault("sound_volume", "0.8");
settings->setDefault("enable_mesh_cache", "false");
settings->setDefault("mesh_generation_interval", "0");
settings->setDefault("meshgen_block_cache_size", "20");
settings->setDefault("enable_vbo", "true");
settings->setDefault("free_move", "false");
settings->setDefault("fast_move", "false");