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(ViewPos, 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];
}
// Mark that we need to render this
subsector_t *sub = (subsector_t *)((BYTE *)node - 1);
MaxCeilingHeight = MAX(MaxCeilingHeight, sub->sector->ceilingplane.Zat0());
MinFloorHeight = MIN(MinFloorHeight, sub->sector->floorplane.Zat0());
PvsSectors.push_back(sub);
// Update culling info for further bsp clipping
for (uint32_t i = 0; i < sub->numlines; i++)
{
seg_t *line = &sub->firstline[i];
if ((line->sidedef == nullptr || !(line->sidedef->Flags & WALLF_POLYOBJ)) && line->backsector == nullptr)
{
int sx1, sx2;
if (GetSegmentRangeForLine(line->v1->fX(), line->v1->fY(), line->v2->fX(), line->v2->fY(), sx1, sx2))
{
MarkSegmentCulled(sx1, sx2);
}
}
}
}
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);
}
