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Optimize memory usage to reduce LuaJIT OOM errors 

Improve speed and reduce LuaJIT out of memory crashes by not allocating a new voxel buffer every on_generated()
This fix requires Minetest v4.15 or later.
Reference: paramat's explanation of #3 https://forum.minetest.net/viewtopic.php?t=16043
This commit is contained in:
Treer 2019-02-09 18:42:59 +11:00
parent adb42fa270
commit 0220184ebc
1 changed files with 6 additions and 4 deletions
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10
multi_map_core/core.lua
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@ -31,6 +31,8 @@ multi_map.generators = {}
-- When no suitable generator is found, this generator is used as a fallback
multi_map.fallback_generator = nil
local vm_data = {} -- reuse the massive VoxelManip memory buffer instead of creating on every on_generate()
-- Set the current layer which the mapgen is generating
-- y = absolute y value to be translated to layer
function multi_map.set_current_layer(y)
@ -322,7 +324,7 @@ minetest.register_on_generated(function(minp, maxp)
then
local vm, emin, emax = minetest.get_mapgen_object("voxelmanip")
local area = VoxelArea:new({MinEdge = emin, MaxEdge = emax})
local vm_data = vm:get_data()
vm:get_data(vm_data)
if multi_map.layers[multi_map.current_layer] and
multi_map.layers[multi_map.current_layer].bedrock_generator
@ -342,7 +344,7 @@ minetest.register_on_generated(function(minp, maxp)
then
local vm, emin, emax = minetest.get_mapgen_object("voxelmanip")
local area = VoxelArea:new({MinEdge = emin, MaxEdge = emax})
local vm_data = vm:get_data()
vm:get_data(vm_data)
if multi_map.layers[multi_map.current_layer] and
multi_map.layers[multi_map.current_layer].skyrock_generator
@ -359,7 +361,7 @@ minetest.register_on_generated(function(minp, maxp)
elseif multi_map.wrap_layers and multi_map.in_skip_area({ x = minp.x, y = minp.z }) then
local vm, emin, emax = minetest.get_mapgen_object("voxelmanip")
local area = VoxelArea:new({MinEdge = emin, MaxEdge = emax})
local vm_data = vm:get_data()
vm:get_data(vm_data)
multi_map.generate_singlenode_chunk(minp, maxp, area, vm_data, multi_map.node["multi_map_core:skyrock"])
vm:set_data(vm_data)
vm:calc_lighting(false)
@ -367,7 +369,7 @@ minetest.register_on_generated(function(minp, maxp)
else
local vm, emin, emax = minetest.get_mapgen_object("voxelmanip")
local area = VoxelArea:new({MinEdge = emin, MaxEdge = emax})
local vm_data = vm:get_data()
vm:get_data(vm_data)
local remove_shadow_caster = false
-- Add a temporary shadow caster layer above the chunk to ensure caves are dark