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Allow cheaper culling checks at a distance (#14073)

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* Allow cheaper culling checks at a distance
* Pick a random ray, so that far missing block will eventually be shown
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lhofhansl 2023-12-16 15:04:21 -08:00 • committed by GitHub
parent 16c22477c2
commit ca1a723890
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6 changed files with 25 additions and 5 deletions
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10
src/map.cpp
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@ -1155,7 +1155,7 @@ bool Map::isOccluded(const v3s16 &pos_camera, const v3s16 &pos_target,
return false;
}
bool Map::isBlockOccluded(MapBlock *block, v3s16 cam_pos_nodes)
bool Map::isBlockOccluded(MapBlock *block, v3s16 cam_pos_nodes, bool simple_check)
{
// Check occlusion for center and all 8 corners of the mapblock
// Overshoot a little for less flickering
@ -1193,6 +1193,14 @@ bool Map::isBlockOccluded(MapBlock *block, v3s16 cam_pos_nodes)
// 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;
// Additional occlusion check, see comments in that function
v3s16 check;
if (determineAdditionalOcclusionCheck(cam_pos_nodes, block->getBox(), check)) {