const LLVector3 LLDrawable::getPositionAgent() const
{
if (getVOVolume())
{
if (isActive())
{
if (!isRoot())
{
LLVector4a pos;
pos.load3(mVObjp->getPosition().mV);
getRenderMatrix().affineTransform(pos,pos);
return LLVector3(pos.getF32ptr());
}
else
{
return LLVector3(getRenderMatrix().getRow<3>().getF32ptr());
}
}
else
{
return mVObjp->getPositionAgent();
}
}
else
{
return getWorldPosition();
}
}
void LLVOCacheEntry::calcSceneContribution(const LLVector4a& camera_origin, bool needs_update, U32 last_update, F32 max_dist)
{
if(!needs_update && getVisible() >= last_update)
{
return; //no need to update
}
LLVector4a lookAt;
lookAt.setSub(getPositionGroup(), camera_origin);
F32 distance = lookAt.getLength3().getF32();
distance -= sNearRadius;
if(distance <= 0.f)
{
//nearby objects, set a large number
const F32 LARGE_SCENE_CONTRIBUTION = 1000.f; //a large number to force to load the object.
mSceneContrib = LARGE_SCENE_CONTRIBUTION;
}
else
{
F32 rad = getBinRadius();
max_dist += rad;
if(distance + sNearRadius < max_dist)
{
mSceneContrib = (rad * rad) / distance;
}
else
{
mSceneContrib = 0.f; //out of draw distance, not to load
}
}
setVisible();
}
LLPolyMorphData *clone_morph_param_cleavage(const LLPolyMorphData *src_data,
F32 scale,
const std::string &name)
{
LLPolyMorphData* cloned_morph_data = new LLPolyMorphData(*src_data);
cloned_morph_data->mName = name;
LLVector4a sc;
sc.splat(scale);
LLVector4a nsc;
nsc.set(scale, -scale, scale, scale);
for (U32 v=0; v < cloned_morph_data->mNumIndices; v++)
{
if (cloned_morph_data->mCoords[v][1] < 0)
{
cloned_morph_data->mCoords[v].setMul(src_data->mCoords[v],nsc);
cloned_morph_data->mNormals[v].setMul(src_data->mNormals[v],nsc);
cloned_morph_data->mBinormals[v].setMul(src_data->mBinormals[v],nsc);
}
else
{
cloned_morph_data->mCoords[v].setMul(src_data->mCoords[v],sc);
cloned_morph_data->mNormals[v].setMul(src_data->mNormals[v], sc);
cloned_morph_data->mBinormals[v].setMul(src_data->mBinormals[v],sc);
}
}
return cloned_morph_data;
}
void LLDrawable::updateDistance(LLCamera& camera, bool force_update)
{
if (LLViewerCamera::sCurCameraID != LLViewerCamera::CAMERA_WORLD)
{
llwarns << "Attempted to update distance for non-world camera." << llendl;
return;
}
//switch LOD with the spatial group to avoid artifacts
//LLSpatialGroup* sg = getSpatialGroup();
LLVector3 pos;
//if (!sg || sg->changeLOD())
{
LLVOVolume* volume = getVOVolume();
if (volume)
{
if (getSpatialGroup())
{
pos.set(getPositionGroup().getF32ptr());
}
else
{
pos = getPositionAgent();
}
if (isState(LLDrawable::HAS_ALPHA))
{
for (S32 i = 0; i < getNumFaces(); i++)
{
LLFace* facep = getFace(i);
if (force_update || facep->getPoolType() == LLDrawPool::POOL_ALPHA)
{
LLVector4a box;
box.setSub(facep->mExtents[1], facep->mExtents[0]);
box.mul(0.25f);
LLVector3 v = (facep->mCenterLocal-camera.getOrigin());
const LLVector3& at = camera.getAtAxis();
for (U32 j = 0; j < 3; j++)
{
v.mV[j] -= box[j] * at.mV[j];
}
facep->mDistance = v * camera.getAtAxis();
}
}
}
}
else
{
pos = LLVector3(getPositionGroup().getF32ptr());
}
pos -= camera.getOrigin();
mDistanceWRTCamera = llround(pos.magVec(), 0.01f);
mVObjp->updateLOD();
}
}
void LLVOPartGroup::updateSpatialExtents(LLVector4a& newMin, LLVector4a& newMax)
{
const LLVector3& pos_agent = getPositionAgent();
newMin.load3( (pos_agent - mScale).mV);
newMax.load3( (pos_agent + mScale).mV);
LLVector4a pos;
pos.load3(pos_agent.mV);
mDrawable->setPositionGroup(pos);
}
U8* get_box_fan_indices_ptr(LLCamera* camera, const LLVector4a& center)
{
LLVector4a origin;
origin.load3(camera->getOrigin().mV);
S32 cypher = center.greaterThan(origin).getGatheredBits() & 0x7;
return (U8*) (sOcclusionIndices+cypher*8);
}
U32 get_box_fan_indices(LLCamera* camera, const LLVector4a& center)
{
LLVector4a origin;
origin.load3(camera->getOrigin().mV);
S32 cypher = center.greaterThan(origin).getGatheredBits() & 0x7;
return cypher*8;
}
BOOL LLViewerCamera::areVertsVisible(LLViewerObject* volumep, BOOL all_verts)
{
S32 i, num_faces;
LLDrawable* drawablep = volumep->mDrawable;
if (!drawablep)
{
return FALSE;
}
LLVolume* volume = volumep->getVolume();
if (!volume)
{
return FALSE;
}
LLVOVolume* vo_volume = (LLVOVolume*) volumep;
vo_volume->updateRelativeXform();
LLMatrix4 mat = vo_volume->getRelativeXform();
LLMatrix4 render_mat(vo_volume->getRenderRotation(), LLVector4(vo_volume->getRenderPosition()));
LLMatrix4a render_mata;
render_mata.loadu(render_mat);
LLMatrix4a mata;
mata.loadu(mat);
num_faces = volume->getNumVolumeFaces();
for (i = 0; i < num_faces; i++)
{
const LLVolumeFace& face = volume->getVolumeFace(i);
for (U32 v = 0; v < face.mNumVertices; v++)
{
const LLVector4a& src_vec = face.mPositions[v];
LLVector4a vec;
mata.affineTransform(src_vec, vec);
if (drawablep->isActive())
{
LLVector4a t = vec;
render_mata.affineTransform(t, vec);
}
BOOL in_frustum = pointInFrustum(LLVector3(vec.getF32ptr())) > 0;
if (( !in_frustum && all_verts) ||
(in_frustum && !all_verts))
{
return !all_verts;
}
}
}
return all_verts;
}
//virtual
bool LLViewerOctreeGroup::boundObjects(BOOL empty, LLVector4a& minOut, LLVector4a& maxOut)
{
const OctreeNode* node = mOctreeNode;
if (node->isEmpty())
{ //don't do anything if there are no objects
if (empty && mOctreeNode->getParent())
{ //only root is allowed to be empty
OCT_ERRS << "Empty leaf found in octree." << LL_ENDL;
}
return false;
}
LLVector4a& newMin = mObjectExtents[0];
LLVector4a& newMax = mObjectExtents[1];
if (hasState(OBJECT_DIRTY))
{ //calculate new bounding box
clearState(OBJECT_DIRTY);
//initialize bounding box to first element
OctreeNode::const_element_iter i = node->getDataBegin();
LLViewerOctreeEntry* entry = *i;
const LLVector4a* minMax = entry->getSpatialExtents();
newMin = minMax[0];
newMax = minMax[1];
for (++i; i != node->getDataEnd(); ++i)
{
entry = *i;
minMax = entry->getSpatialExtents();
update_min_max(newMin, newMax, minMax[0]);
update_min_max(newMin, newMax, minMax[1]);
}
mObjectBounds[0].setAdd(newMin, newMax);
mObjectBounds[0].mul(0.5f);
mObjectBounds[1].setSub(newMax, newMin);
mObjectBounds[1].mul(0.5f);
}
if (empty)
{
minOut = newMin;
maxOut = newMax;
}
else
{
minOut.setMin(minOut, newMin);
maxOut.setMax(maxOut, newMax);
}
return TRUE;
}
/*
For each vertex, given:
B - binormal
T - tangent
N - normal
P - position
The resulting texture coordinate <u,v> is:
u = 2(B dot P)
v = 2(T dot P)
*/
void planarProjection(LLVector2 &tc, const LLVector4a& normal,
const LLVector4a ¢er, const LLVector4a& vec)
{
LLVector4a binormal;
F32 d = normal[0];
if (d >= 0.5f || d <= -0.5f)
{
if (d < 0)
{
binormal.set(0,-1,0);
}
else
{
binormal.set(0, 1, 0);
}
}
else
{
if (normal[1] > 0)
{
binormal.set(-1,0,0);
}
else
{
binormal.set(1,0,0);
}
}
LLVector4a tangent;
tangent.setCross3(binormal,normal);
tc.mV[1] = -((tangent.dot3(vec).getF32())*2 - 0.5f);
tc.mV[0] = 1.0f+((binormal.dot3(vec).getF32())*2 - 0.5f);
}
LLVector4a LLDriverParam::getVertexDistortion(S32 index, LLPolyMesh *poly_mesh)
{
LLVector4a sum;
sum.clear();
for( entry_list_t::iterator iter = mDriven.begin(); iter != mDriven.end(); iter++ )
{
LLDrivenEntry* driven = &(*iter);
sum.add(driven->mParam->getVertexDistortion( index, poly_mesh ));
}
return sum;
}
bool less_than_max_mag(const LLVector4a& vec)
{
LLVector4a MAX_MAG;
MAX_MAG.splat(1024.f*1024.f);
LLVector4a val;
val.setAbs(vec);
S32 lt = val.lessThan(MAX_MAG).getGatheredBits() & 0x7;
return lt == 0x7;
}
void LLVOSurfacePatch::updateSpatialExtents(LLVector4a& newMin, LLVector4a &newMax)
{
LLVector3 posAgent = getPositionAgent();
LLVector3 scale = getScale();
scale.mV[VZ] = llmax(scale.mV[VZ], 1.f);
newMin.load3( (posAgent-scale*0.5f).mV); // Changing to 2.f makes the culling a -little- better, but still wrong
newMax.load3( (posAgent+scale*0.5f).mV);
LLVector4a pos;
pos.setAdd(newMin,newMax);
pos.mul(0.5f);
mDrawable->setPositionGroup(pos);
}
BOOL LLVOPartGroup::lineSegmentIntersect(const LLVector4a& start, const LLVector4a& end,
S32 face,
BOOL pick_transparent,
BOOL pick_rigged,
S32* face_hit,
LLVector4a* intersection,
LLVector2* tex_coord,
LLVector4a* normal,
LLVector4a* bi_normal)
{
LLVector4a dir;
dir.setSub(end, start);
F32 closest_t = 2.f;
BOOL ret = FALSE;
for (U32 idx = 0; idx < mViewerPartGroupp->mParticles.size(); ++idx)
{
const LLViewerPart &part = *((LLViewerPart*) (mViewerPartGroupp->mParticles[idx]));
LLVector4a v[4];
LLStrider<LLVector4a> verticesp;
verticesp = v;
getGeometry(part, verticesp);
F32 a,b,t;
if (LLTriangleRayIntersect(v[0], v[1], v[2], start, dir, a,b,t) ||
LLTriangleRayIntersect(v[1], v[3], v[2], start, dir, a,b,t))
{
if (t >= 0.f &&
t <= 1.f &&
t < closest_t)
{
ret = TRUE;
closest_t = t;
if (face_hit)
{
*face_hit = idx;
}
if (intersection)
{
LLVector4a intersect = dir;
intersect.mul(closest_t);
intersection->setAdd(intersect, start);
}
}
}
}
return ret;
}
//static
void LLVOPartGroup::restoreGL()
{
//TODO: optimize out binormal mask here. Specular and normal coords as well.
sVB = new LLVertexBuffer(VERTEX_DATA_MASK | LLVertexBuffer::MAP_TANGENT | LLVertexBuffer::MAP_TEXCOORD1 | LLVertexBuffer::MAP_TEXCOORD2, GL_STREAM_DRAW_ARB);
U32 count = LL_MAX_PARTICLE_COUNT;
sVB->allocateBuffer(count*4, count*6, true);
//indices and texcoords are always the same, set once
LLStrider<U16> indicesp;
LLStrider<LLVector4a> verticesp;
sVB->getIndexStrider(indicesp);
sVB->getVertexStrider(verticesp);
LLVector4a v;
v.set(0,0,0,0);
U16 vert_offset = 0;
for (U32 i = 0; i < LL_MAX_PARTICLE_COUNT; i++)
{
*indicesp++ = vert_offset + 0;
*indicesp++ = vert_offset + 1;
*indicesp++ = vert_offset + 2;
*indicesp++ = vert_offset + 1;
*indicesp++ = vert_offset + 3;
*indicesp++ = vert_offset + 2;
*verticesp++ = v;
vert_offset += 4;
}
LLStrider<LLVector2> texcoordsp;
sVB->getTexCoord0Strider(texcoordsp);
for (U32 i = 0; i < LL_MAX_PARTICLE_COUNT; i++)
{
*texcoordsp++ = LLVector2(0.f, 1.f);
*texcoordsp++ = LLVector2(0.f, 0.f);
*texcoordsp++ = LLVector2(1.f, 1.f);
*texcoordsp++ = LLVector2(1.f, 0.f);
}
sVB->flush();
}
LLViewerOctreeGroup::LLViewerOctreeGroup(OctreeNode* node) :
mOctreeNode(node),
mState(CLEAN)
{
LLVector4a tmp;
tmp.splat(0.f);
mExtents[0] = mExtents[1] = mObjectBounds[0] = mObjectBounds[0] = mObjectBounds[1] =
mObjectExtents[0] = mObjectExtents[1] = tmp;
mBounds[0] = node->getCenter();
mBounds[1] = node->getSize();
mOctreeNode->addListener(this);
}
//static
void LLVOPartGroup::restoreGL()
{
sVB = new LLVertexBuffer(VERTEX_DATA_MASK, GL_STREAM_DRAW_ARB);
U32 count = LL_MAX_PARTICLE_COUNT;
sVB->allocateBuffer(count*4, count*6, true);
//indices and texcoords are always the same, set once
LLStrider<U16> indicesp;
LLStrider<LLVector4a> verticesp;
sVB->getIndexStrider(indicesp);
sVB->getVertexStrider(verticesp);
LLVector4a v;
v.set(0,0,0,0);
U16 vert_offset = 0;
for (U32 i = 0; i < LL_MAX_PARTICLE_COUNT; i++)
{
*indicesp++ = vert_offset + 0;
*indicesp++ = vert_offset + 1;
*indicesp++ = vert_offset + 2;
*indicesp++ = vert_offset + 1;
*indicesp++ = vert_offset + 3;
*indicesp++ = vert_offset + 2;
*verticesp++ = v;
vert_offset += 4;
}
LLStrider<LLVector2> texcoordsp;
sVB->getTexCoord0Strider(texcoordsp);
for (U32 i = 0; i < LL_MAX_PARTICLE_COUNT; i++)
{
*texcoordsp++ = LLVector2(0.f, 1.f);
*texcoordsp++ = LLVector2(0.f, 0.f);
*texcoordsp++ = LLVector2(1.f, 1.f);
*texcoordsp++ = LLVector2(1.f, 0.f);
}
sVB->flush();
}
void LLVOTree::updateSpatialExtents(LLVector4a& newMin, LLVector4a& newMax)
{
F32 radius = getScale().length()*0.05f;
LLVector3 center = getRenderPosition();
F32 sz = mBillboardScale*mBillboardRatio*radius*0.5f;
LLVector3 size(sz,sz,sz);
center += LLVector3(0, 0, size.mV[2]) * getRotation();
newMin.load3((center-size).mV);
newMax.load3((center+size).mV);
LLVector4a pos;
pos.load3(center.mV);
mDrawable->setPositionGroup(pos);
}
void LLDrawable::shiftPos(const LLVector4a &shift_vector)
{
if (isDead())
{
llwarns << "Shifting dead drawable" << llendl;
return;
}
if (mParent)
{
mXform.setPosition(mVObjp->getPosition());
}
else
{
mXform.setPosition(mVObjp->getPositionAgent());
}
mXform.setRotation(mVObjp->getRotation());
mXform.setScale(1,1,1);
mXform.updateMatrix();
if (isStatic())
{
LLVOVolume* volume = getVOVolume();
if (!volume)
{
gPipeline.markRebuild(this, LLDrawable::REBUILD_ALL, TRUE);
}
for (S32 i = 0; i < getNumFaces(); i++)
{
LLFace *facep = getFace(i);
facep->mCenterAgent += LLVector3(shift_vector.getF32ptr());
facep->mExtents[0].add(shift_vector);
facep->mExtents[1].add(shift_vector);
if (!volume && facep->hasGeometry())
{
facep->clearVertexBuffer();
}
}
mExtents[0].add(shift_vector);
mExtents[1].add(shift_vector);
mPositionGroup.add(shift_vector);
}
else if (mSpatialBridge)
{
mSpatialBridge->shiftPos(shift_vector);
}
else if (isAvatar())
{
mExtents[0].add(shift_vector);
mExtents[1].add(shift_vector);
mPositionGroup.add(shift_vector);
}
mVObjp->onShift(shift_vector);
}
LLPolyMorphData *clone_morph_param_direction(const LLPolyMorphData *src_data,
const LLVector3 &direction,
const std::string &name)
{
LLPolyMorphData* cloned_morph_data = new LLPolyMorphData(*src_data);
cloned_morph_data->mName = name;
LLVector4a dir;
dir.load3(direction.mV);
for (U32 v=0; v < cloned_morph_data->mNumIndices; v++)
{
cloned_morph_data->mCoords[v] = dir;
cloned_morph_data->mNormals[v].clear();
cloned_morph_data->mBinormals[v].clear();
}
return cloned_morph_data;
}
const LLVector4a &LLDriverParam::getAvgDistortion()
{
// It's not actually correct to take the average of averages, but it good enough here.
LLVector4a sum;
sum.clear();
S32 count = 0;
for( entry_list_t::iterator iter = mDriven.begin(); iter != mDriven.end(); iter++ )
{
LLDrivenEntry* driven = &(*iter);
sum.add(driven->mParam->getAvgDistortion());
count++;
}
sum.mul( 1.f/(F32)count);
mDefaultVec = sum;
return mDefaultVec;
}
void LLVolumeImplFlexible::onShift(const LLVector4a &shift_vector)
{
//VECTORIZE THIS
LLVector3 shift(shift_vector.getF32ptr());
for (int section = 0; section < (1<<FLEXIBLE_OBJECT_MAX_SECTIONS)+1; ++section)
{
mSection[section].mPosition += shift;
}
}
void LLVOWater::updateSpatialExtents(LLVector4a &newMin, LLVector4a& newMax)
{
LLVector4a pos;
pos.load3(getPositionAgent().mV);
LLVector4a scale;
scale.load3(getScale().mV);
scale.mul(0.5f);
newMin.setSub(pos, scale);
newMax.setAdd(pos, scale);
pos.setAdd(newMin,newMax);
pos.mul(0.5f);
mDrawable->setPositionGroup(pos);
}
BOOL LLOcclusionCullingGroup::earlyFail(LLCamera* camera, const LLVector4a* bounds)
{
if (camera->getOrigin().isExactlyZero())
{
return FALSE;
}
static LLCachedControl<F32> vel("SHOcclusionFudge",SG_OCCLUSION_FUDGE);
LLVector4a fudge(vel*2.f);
const LLVector4a& c = bounds[0];
static LLVector4a r;
r.setAdd(bounds[1], fudge);
/*if (r.magVecSquared() > 1024.0*1024.0)
{
return TRUE;
}*/
LLVector4a e;
e.load3(camera->getOrigin().mV);
LLVector4a min;
min.setSub(c,r);
LLVector4a max;
max.setAdd(c,r);
S32 lt = e.lessThan(min).getGatheredBits() & 0x7;
if (lt)
{
return FALSE;
}
S32 gt = e.greaterThan(max).getGatheredBits() & 0x7;
if (gt)
{
return FALSE;
}
return TRUE;
}
void LLVOCacheEntry::setBoundingInfo(const LLVector3& pos, const LLVector3& scale)
{
LLVector4a center, newMin, newMax;
center.load3(pos.mV);
LLVector4a size;
size.load3(scale.mV);
newMin.setSub(center, size);
newMax.setAdd(center, size);
setPositionGroup(center);
setSpatialExtents(newMin, newMax);
if(getNumOfChildren() > 0) //has children
{
updateParentBoundingInfo();
}
else
{
setBinRadius(llmin(size.getLength3().getF32() * 4.f, 256.f));
}
}
bool LLVOCacheEntry::isAnyVisible(const LLVector4a& camera_origin, const LLVector4a& local_camera_origin, F32 dist_threshold)
{
LLOcclusionCullingGroup* group = (LLOcclusionCullingGroup*)getGroup();
if(!group)
{
return false;
}
//any visible
bool vis = group->isAnyRecentlyVisible();
//not ready to remove
if(!vis)
{
S32 cur_vis = llmax(group->getAnyVisible(), (S32)getVisible());
vis = (cur_vis + sMinFrameRange > LLViewerOctreeEntryData::getCurrentFrame());
}
//within the back sphere
if(!vis && !mParentID && !group->isOcclusionState(LLOcclusionCullingGroup::OCCLUDED))
{
LLVector4a lookAt;
if(mBSphereRadius > 0.f)
{
lookAt.setSub(mBSphereCenter, local_camera_origin);
dist_threshold += mBSphereRadius;
}
else
{
lookAt.setSub(getPositionGroup(), camera_origin);
dist_threshold += getBinRadius();
}
vis = (lookAt.dot3(lookAt).getF32() < dist_threshold * dist_threshold);
}
return vis;
}
void LLVOPartGroup::updateSpatialExtents(LLVector4a& newMin, LLVector4a& newMax)
{
const LLVector3& pos_agent = getPositionAgent();
LLVector4a scale;
LLVector4a p;
p.load3(pos_agent.mV);
scale.splat(mScale.mV[0]+mViewerPartGroupp->getBoxSide()*0.5f);
newMin.setSub(p, scale);
newMax.setAdd(p,scale);
llassert(newMin.isFinite3());
llassert(newMax.isFinite3());
llassert(p.isFinite3());
mDrawable->setPositionGroup(p);
}
// static
void LLViewerJointMesh::updateGeometry(LLFace *mFace, LLPolyMesh *mMesh)
{
LLStrider<LLVector3> o_vertices;
LLStrider<LLVector3> o_normals;
//get vertex and normal striders
LLVertexBuffer* buffer = mFace->getVertexBuffer();
buffer->getVertexStrider(o_vertices, 0);
buffer->getNormalStrider(o_normals, 0);
F32* __restrict vert = o_vertices[0].mV;
F32* __restrict norm = o_normals[0].mV;
const F32* __restrict weights = mMesh->getWeights();
const LLVector4a* __restrict coords = (LLVector4a*) mMesh->getCoords();
const LLVector4a* __restrict normals = (LLVector4a*) mMesh->getNormals();
U32 offset = mMesh->mFaceVertexOffset*4;
vert += offset;
norm += offset;
for (U32 index = 0; index < mMesh->getNumVertices(); index++)
{
// equivalent to joint = floorf(weights[index]);
S32 joint = _mm_cvtt_ss2si(_mm_load_ss(weights+index));
F32 w = weights[index] - joint;
LLMatrix4a gBlendMat;
if (w != 0.f)
{
// blend between matrices and apply
gBlendMat.setLerp(gJointMatAligned[joint+0],
gJointMatAligned[joint+1], w);
LLVector4a res;
gBlendMat.affineTransform(coords[index], res);
res.store4a(vert+index*4);
gBlendMat.rotate(normals[index], res);
res.store4a(norm+index*4);
}
else
{ // No lerp required in this case.
LLVector4a res;
gJointMatAligned[joint].affineTransform(coords[index], res);
res.store4a(vert+index*4);
gJointMatAligned[joint].rotate(normals[index], res);
res.store4a(norm+index*4);
}
}
buffer->flush();
}
S32 AABBSphereIntersectR2(const LLVector4a& min, const LLVector4a& max, const LLVector3 &origin, const F32 &r)
{
F32 d = 0.f;
F32 t;
LLVector4a origina;
origina.load3(origin.mV);
LLVector4a v;
v.setSub(min, origina);
if (v.dot3(v) < r)
{
v.setSub(max, origina);
if (v.dot3(v) < r)
{
return 2;
}
}
for (U32 i = 0; i < 3; i++)
{
if (origin.mV[i] < min[i])
{
t = min[i] - origin.mV[i];
d += t*t;
}
else if (origin.mV[i] > max[i])
{
t = origin.mV[i] - max[i];
d += t*t;
}
if (d > r)
{
return 0;
}
}
return 1;
}
//make the parent bounding box to include this child
void LLVOCacheEntry::updateParentBoundingInfo(const LLVOCacheEntry* child)
{
const LLVector4a* child_exts = child->getSpatialExtents();
LLVector4a newMin, newMax;
newMin = child_exts[0];
newMax = child_exts[1];
//move to regional space.
{
const LLVector4a& parent_pos = getPositionGroup();
newMin.add(parent_pos);
newMax.add(parent_pos);
}
//update parent's bbox(min, max)
const LLVector4a* parent_exts = getSpatialExtents();
update_min_max(newMin, newMax, parent_exts[0]);
update_min_max(newMin, newMax, parent_exts[1]);
for(S32 i = 0; i < 4; i++)
{
llclamp(newMin[i], 0.f, 256.f);
llclamp(newMax[i], 0.f, 256.f);
}
setSpatialExtents(newMin, newMax);
//update parent's bbox center
LLVector4a center;
center.setAdd(newMin, newMax);
center.mul(0.5f);
setPositionGroup(center);
//update parent's bbox size vector
LLVector4a size;
size.setSub(newMax, newMin);
size.mul(0.5f);
setBinRadius(llmin(size.getLength3().getF32() * 4.f, 256.f));
}