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Add partner subsectors to surface list for each subsector

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This commit is contained in:
dpjudas 2025-06-24 04:04:29 +02:00
commit e1ec7b2d85
5 changed files with 54 additions and 14 deletions
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34
src/rendering/hwrenderer/doom_levelmesh.cpp
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@ -503,15 +503,47 @@ void DoomLevelMesh::BuildSideVisibilityLists(FLevelLocals& doomMap)
void DoomLevelMesh::BuildSubsectorVisibilityLists(FLevelLocals& doomMap)
{
TArray<subsector_t*> stack;
VisibleSubsectors.resize(doomMap.subsectors.size());
for (size_t i = 0, count = VisibleSubsectors.size(); i < count; i++)
{
subsector_t* sub = &doomMap.subsectors[i];
FBoundingBox bbox = sub->bbox;
bbox.extend(32.0);
validcount++;
// Always bake the subsector
VisibleSubsectors[i].Push(i);
sub->validcount = validcount;
stack.Push(sub);
// To do: use sub->firstline to find neighbouring subsectors we want included in a tile bake
// Add neighbouring subsectors that touches the bounding box
while (stack.size() != 0)
{
sub = stack.Last();
stack.Pop();
auto lines = sub->firstline;
uint32_t count = sub->numlines;
for (uint32_t j = 0; j < count; j++)
{
seg_t* partner = lines[j].PartnerSeg;
if (partner && partner->Subsector)
{
subsector_t* partnersub = partner->Subsector;
if (partnersub->validcount != validcount)
{
partnersub->validcount = validcount;
if (partnersub->bbox.CheckOverlap(bbox))
{
stack.Push(partnersub);
VisibleSubsectors[i].Push(partnersub->Index());
}
}
}
}
}
}
}