From 51f904e4a7d7e5d04be09991f859bd1b26f0d7ae Mon Sep 17 00:00:00 2001
From: Alexander Gavriliuk <alexandrgproductengine@lindenlab.com>
Date: Mon, 25 Sep 2023 12:29:51 +0200
Subject: SL-20244 On-screen animesh characters that start pelvis offset
 animations disappear when root goes off-screen

---
 indra/newview/lldrawable.cpp         | 13 -------------
 indra/newview/llspatialpartition.cpp | 37 ++++++++++++++++++++++++++++++++++++
 indra/newview/llspatialpartition.h   |  5 ++++-
 indra/newview/llvovolume.cpp         | 24 -----------------------
 4 files changed, 41 insertions(+), 38 deletions(-)

diff --git a/indra/newview/lldrawable.cpp b/indra/newview/lldrawable.cpp
index bb4174d3b6..d8be4c3bd5 100644
--- a/indra/newview/lldrawable.cpp
+++ b/indra/newview/lldrawable.cpp
@@ -763,19 +763,6 @@ void LLDrawable::movePartition()
 	if (part)
 	{
 		part->move(this, getSpatialGroup());
-
-		// SL-18251 "On-screen animesh characters using pelvis offset animations
-		// disappear when root goes off-screen"
-		//
-		// Update extents of the root node when Control Avatar changes it's bounds
-		if (mRenderType == LLPipeline::RENDER_TYPE_CONTROL_AV && isRoot())
-		{
-			LLControlAvatar* controlAvatar = dynamic_cast<LLControlAvatar*>(getVObj().get());
-			if (controlAvatar && controlAvatar->mControlAVBridge)
-			{
-				((LLSpatialGroup*)controlAvatar->mControlAVBridge->mOctree->getListener(0))->setState(LLViewerOctreeGroup::DIRTY);
-			}
-		}
 	}
 }
 
diff --git a/indra/newview/llspatialpartition.cpp b/indra/newview/llspatialpartition.cpp
index 17c834326c..ae97ce604a 100644
--- a/indra/newview/llspatialpartition.cpp
+++ b/indra/newview/llspatialpartition.cpp
@@ -847,6 +847,43 @@ void LLSpatialGroup::handleChildAddition(const OctreeNode* parent, OctreeNode* c
 	assert_states_valid(this);
 }
 
+//virtual
+void LLSpatialGroup::rebound()
+{
+    if (!isDirty())
+        return;
+
+    super::rebound();
+
+    if (mSpatialPartition->mDrawableType == LLPipeline::RENDER_TYPE_CONTROL_AV)
+    {
+        llassert(mSpatialPartition->mPartitionType == LLViewerRegion::PARTITION_CONTROL_AV);
+
+        LLSpatialBridge* bridge = getSpatialPartition()->asBridge();
+        if (bridge &&
+            bridge->mDrawable &&
+            bridge->mDrawable->getVObj() &&
+            bridge->mDrawable->getVObj()->isRoot())
+        {
+            LLControlAvatar* controlAvatar = bridge->mDrawable->getVObj()->getControlAvatar();
+            if (controlAvatar &&
+                controlAvatar->mDrawable &&
+                controlAvatar->mControlAVBridge)
+            {
+                llassert(controlAvatar->mControlAVBridge->mOctree);
+
+                LLSpatialGroup* root = (LLSpatialGroup*)controlAvatar->mControlAVBridge->mOctree->getListener(0);
+                if (this == root)
+                {
+                    const LLVector4a* addingExtents = controlAvatar->mDrawable->getSpatialExtents();
+                    const LLXformMatrix* currentTransform = bridge->mDrawable->getXform();
+                    expandExtents(addingExtents, *currentTransform);
+                }
+            }
+        }
+    }
+}
+
 void LLSpatialGroup::destroyGL(bool keep_occlusion) 
 {
 	setState(LLSpatialGroup::GEOM_DIRTY | LLSpatialGroup::IMAGE_DIRTY);
diff --git a/indra/newview/llspatialpartition.h b/indra/newview/llspatialpartition.h
index cdb591083c..b5ac867b3e 100644
--- a/indra/newview/llspatialpartition.h
+++ b/indra/newview/llspatialpartition.h
@@ -205,6 +205,7 @@ public:
 LL_ALIGN_PREFIX(64)
 class LLSpatialGroup : public LLOcclusionCullingGroup
 {
+	using super = LLOcclusionCullingGroup;
 	friend class LLSpatialPartition;
 	friend class LLOctreeStateCheck;
 public:
@@ -322,6 +323,9 @@ public:
 	virtual void handleDestruction(const TreeNode* node);
 	virtual void handleChildAddition(const OctreeNode* parent, OctreeNode* child);
 
+	// LLViewerOctreeGroup
+	virtual void rebound();
+
 public:
 	LL_ALIGN_16(LLVector4a mViewAngle);
 	LL_ALIGN_16(LLVector4a mLastUpdateViewAngle);
@@ -703,7 +707,6 @@ class LLControlAVBridge : public LLVolumeBridge
 	using super = LLVolumeBridge;
 public:
 	LLControlAVBridge(LLDrawable* drawablep, LLViewerRegion* regionp);
-	virtual void updateSpatialExtents();
 };
 
 class LLHUDBridge : public LLVolumeBridge
diff --git a/indra/newview/llvovolume.cpp b/indra/newview/llvovolume.cpp
index 269c5666cc..c7054102fd 100644
--- a/indra/newview/llvovolume.cpp
+++ b/indra/newview/llvovolume.cpp
@@ -5110,30 +5110,6 @@ LLControlAVBridge::LLControlAVBridge(LLDrawable* drawablep, LLViewerRegion* regi
 	mPartitionType = LLViewerRegion::PARTITION_CONTROL_AV;
 }
 
-void LLControlAVBridge::updateSpatialExtents()
-{
-	LL_PROFILE_ZONE_SCOPED_CATEGORY_DRAWABLE
-
-	LLSpatialGroup* root = (LLSpatialGroup*)mOctree->getListener(0);
-
-	bool rootWasDirty = root->isDirty();
-
-	super::updateSpatialExtents(); // root becomes non-dirty here
-
-	// SL-18251 "On-screen animesh characters using pelvis offset animations
-	// disappear when root goes off-screen"
-	//
-	// Expand extents to include Control Avatar placed outside of the bounds
-    LLControlAvatar* controlAvatar = getVObj() ? getVObj()->getControlAvatar() : NULL;
-    if (controlAvatar
-        && controlAvatar->mDrawable
-        && controlAvatar->mDrawable->getEntry()
-        && (rootWasDirty || controlAvatar->mPlaying))
-	{
-		root->expandExtents(controlAvatar->mDrawable->getSpatialExtents(), *mDrawable->getXform());
-	}
-}
-
 bool can_batch_texture(LLFace* facep)
 {
 	if (facep->getTextureEntry()->getBumpmap())
-- 
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