FallBackSplit FallBackSplit::find(size_t threadIndex, PrimRefBlockAlloc<BezierPrim>& alloc, BezierRefList& prims,
BezierRefList& lprims_o, PrimInfo& linfo_o,
BezierRefList& rprims_o, PrimInfo& rinfo_o)
{
size_t num = 0;
BBox3fa lbounds = empty, rbounds = empty;
BezierRefList::item* lblock = lprims_o.insert(alloc.malloc(threadIndex));
BezierRefList::item* rblock = rprims_o.insert(alloc.malloc(threadIndex));
linfo_o.reset();
rinfo_o.reset();
while (BezierRefList::item* block = prims.take())
{
for (size_t i=0; i<block->size(); i++)
{
const BezierPrim& prim = block->at(i);
const BBox3fa bounds = prim.bounds();
if ((num++)%2)
{
linfo_o.add(bounds,prim.center2());
if (likely(lblock->insert(prim))) continue;
lblock = lprims_o.insert(alloc.malloc(threadIndex));
lblock->insert(prim);
}
else
{
rinfo_o.add(bounds,prim.center2());
if (likely(rblock->insert(prim))) continue;
rblock = rprims_o.insert(alloc.malloc(threadIndex));
rblock->insert(prim);
}
}
alloc.free(threadIndex,block);
}
return FallBackSplit(linfo_o.geomBounds,linfo_o.size(),rinfo_o.geomBounds,rinfo_o.size());
}
void StrandSplit::Split::split<false>(size_t threadIndex, size_t threadCount, LockStepTaskScheduler* scheduler, PrimRefBlockAlloc<BezierPrim>& alloc,
BezierRefList& prims,
BezierRefList& lprims_o, PrimInfo& linfo_o,
BezierRefList& rprims_o, PrimInfo& rinfo_o) const
{
BezierRefList::item* lblock = lprims_o.insert(alloc.malloc(threadIndex));
BezierRefList::item* rblock = rprims_o.insert(alloc.malloc(threadIndex));
linfo_o.reset();
rinfo_o.reset();
while (BezierRefList::item* block = prims.take())
{
for (size_t i=0; i<block->size(); i++)
{
const BezierPrim& prim = block->at(i);
const Vec3fa axisi = normalize(prim.p3-prim.p0);
const float cos0 = abs(dot(axisi,axis0));
const float cos1 = abs(dot(axisi,axis1));
if (cos0 > cos1)
{
linfo_o.add(prim.bounds(),prim.center());
if (likely(lblock->insert(prim))) continue;
lblock = lprims_o.insert(alloc.malloc(threadIndex));
lblock->insert(prim);
}
else
{
rinfo_o.add(prim.bounds(),prim.center());
if (likely(rblock->insert(prim))) continue;
rblock = rprims_o.insert(alloc.malloc(threadIndex));
rblock->insert(prim);
}
}
alloc.free(threadIndex,block);
}
}
void SpatialSplit::Split::split<false>(size_t threadIndex, size_t threadCount, LockStepTaskScheduler* scheduler, PrimRefBlockAlloc<BezierPrim>& alloc,
Scene* scene, BezierRefList& prims,
BezierRefList& lprims_o, PrimInfo& linfo_o,
BezierRefList& rprims_o, PrimInfo& rinfo_o) const
{
assert(valid());
BezierRefList::item* lblock = lprims_o.insert(alloc.malloc(threadIndex));
BezierRefList::item* rblock = rprims_o.insert(alloc.malloc(threadIndex));
linfo_o.reset();
rinfo_o.reset();
while (BezierRefList::item* block = prims.take())
{
for (size_t i=0; i<block->size(); i++)
{
const BezierPrim& prim = block->at(i);
const int bin0 = mapping.bin(min(prim.p0,prim.p3))[dim];
const int bin1 = mapping.bin(max(prim.p0,prim.p3))[dim];
/* sort to the left side */
if (bin0 < pos && bin1 < pos) // FIXME: optimize
{
linfo_o.add(prim.bounds(),prim.center());
if (likely(lblock->insert(prim))) continue;
lblock = lprims_o.insert(alloc.malloc(threadIndex));
lblock->insert(prim);
continue;
}
/* sort to the right side */
if (bin0 >= pos && bin1 >= pos)// FIXME: optimize
{
rinfo_o.add(prim.bounds(),prim.center());
if (likely(rblock->insert(prim))) continue;
rblock = rprims_o.insert(alloc.malloc(threadIndex));
rblock->insert(prim);
continue;
}
/* split and sort to left and right */
BezierPrim left,right;
float fpos = mapping.pos(pos,dim);
if (prim.split(dim,fpos,left,right))
{
if (!left.bounds().empty()) {
linfo_o.add(left.bounds(),left.center());
if (!lblock->insert(left)) {
lblock = lprims_o.insert(alloc.malloc(threadIndex));
lblock->insert(left);
}
}
if (!right.bounds().empty()) {
rinfo_o.add(right.bounds(),right.center());
if (!rblock->insert(right)) {
rblock = rprims_o.insert(alloc.malloc(threadIndex));
rblock->insert(right);
}
}
continue;
}
/* insert to left side as fallback */
linfo_o.add(prim.bounds(),prim.center());
if (!lblock->insert(prim)) {
lblock = lprims_o.insert(alloc.malloc(threadIndex));
lblock->insert(prim);
}
}
alloc.free(threadIndex,block);
}
}