void PolyCull::CullScene(const TriMatrix &worldToClip, const PolyClipPlane &portalClipPlane)
{
PvsSectors.clear();
PortalClipPlane = portalClipPlane;
// Cull front to back
FirstSkyHeight = true;
MaxCeilingHeight = 0.0;
MinFloorHeight = 0.0;
if (level.nodes.Size() == 0)
CullSubsector(&level.subsectors[0]);
else
CullNode(level.HeadNode());
}
void PolyCull::CullScene(const PolyClipPlane &portalClipPlane)
{
ClearSolidSegments();
MarkViewFrustum();
if (level.LevelName != lastLevelName) // Is this the best way to detect a level change?
{
lastLevelName = level.LevelName;
SubsectorDepths.clear();
SubsectorDepths.resize(level.subsectors.Size(), 0xffffffff);
SectorSeen.clear();
SectorSeen.resize(level.sectors.Size());
}
else
{
for (const auto &sub : PvsSectors)
SubsectorDepths[sub->Index()] = 0xffffffff;
SubsectorDepths.resize(level.subsectors.Size(), 0xffffffff);
for (const auto §or : SeenSectors)
SectorSeen[sector->Index()] = false;
SectorSeen.resize(level.sectors.Size());
}
PvsSectors.clear();
SeenSectors.clear();
NextPvsLineStart = 0;
PvsLineStart.clear();
PvsLineVisible.resize(level.segs.Size());
PortalClipPlane = portalClipPlane;
// Cull front to back
FirstSkyHeight = true;
MaxCeilingHeight = 0.0;
MinFloorHeight = 0.0;
if (level.nodes.Size() == 0)
CullSubsector(&level.subsectors[0]);
else
CullNode(level.HeadNode());
}
void PolyCull::CullNode(void *node)
{
while (!((size_t)node & 1)) // Keep going until found a subsector
{
node_t *bsp = (node_t *)node;
// Decide which side the view point is on.
int side = PointOnSide(PolyRenderer::Instance()->Viewpoint.Pos, bsp);
// Recursively divide front space (toward the viewer).
CullNode(bsp->children[side]);
// Possibly divide back space (away from the viewer).
side ^= 1;
if (!CheckBBox(bsp->bbox[side]))
return;
node = bsp->children[side];
}
subsector_t *sub = (subsector_t *)((uint8_t *)node - 1);
CullSubsector(sub);
}