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Ensure deterministic client occlusion culling and minor improvements (#14212)

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* Ensure deterministic client occlusion culling
* Increase culling optimize distance slightly
* More accurate culling when sampling
This commit is contained in:
lhofhansl 2024-01-06 18:43:46 -08:00 committed by GitHub
parent 8db4ba9e58
commit bd42cc2c77
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4 changed files with 12 additions and 11 deletions
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2
builtin/settingtypes.txt
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@ -2103,7 +2103,7 @@ server_side_occlusion_culling (Server-side occlusion culling) bool true
# rendering glitches (missing blocks).
# This is especially useful for very large viewing range (upwards of 500).
# Stated in MapBlocks (16 nodes).
block_cull_optimize_distance (Block cull optimize distance) int 20 2 2047
block_cull_optimize_distance (Block cull optimize distance) int 25 2 2047
[**Mapgen]

2
src/defaultsettings.cpp
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@ -397,7 +397,7 @@ void set_default_settings()
// This causes frametime jitter on client side, or does it?
settings->setDefault("max_block_send_distance", "12");
settings->setDefault("block_send_optimize_distance", "4");
settings->setDefault("block_cull_optimize_distance", "20");
settings->setDefault("block_cull_optimize_distance", "25");
settings->setDefault("server_side_occlusion_culling", "true");
settings->setDefault("csm_restriction_flags", "62");
settings->setDefault("csm_restriction_noderange", "0");

15
src/map.cpp
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@ -1193,13 +1193,14 @@ bool Map::isBlockOccluded(v3s16 pos_relative, v3s16 cam_pos_nodes, bool simple_c
// this is a HACK, we should think of a more precise algorithm
u32 needed_count = 2;
v3s16 random_point(myrand_range(-bs2, bs2), myrand_range(-bs2, bs2), myrand_range(-bs2, bs2));
if (!isOccluded(cam_pos_nodes, pos_blockcenter + random_point, step, stepfac,
start_offset, end_offset, needed_count))
return false;
if (simple_check)
return true;
// This should be only used in server occlusion cullung.
// The client recalculates the complete drawlist periodically,
// and random sampling could lead to visible flicker.
if (simple_check) {
v3s16 random_point(myrand_range(-bs2, bs2), myrand_range(-bs2, bs2), myrand_range(-bs2, bs2));
return isOccluded(cam_pos_nodes, pos_blockcenter + random_point, step, stepfac,
start_offset, end_offset, 1);
}
// Additional occlusion check, see comments in that function
v3s16 check;

4
src/map.h
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@ -305,9 +305,9 @@ public:
}
}
bool isBlockOccluded(MapBlock *block, v3s16 cam_pos_nodes, bool simple_check = false)
bool isBlockOccluded(MapBlock *block, v3s16 cam_pos_nodes)
{
return isBlockOccluded(block->getPosRelative(), cam_pos_nodes, simple_check);
return isBlockOccluded(block->getPosRelative(), cam_pos_nodes, false);
}
bool isBlockOccluded(v3s16 pos_relative, v3s16 cam_pos_nodes, bool simple_check = false);