From b277cc6a8fd2a48ed3ba6498734d9fae209d181e Mon Sep 17 00:00:00 2001
From: Rye <rye@alchemyviewer.org>
Date: Thu, 18 Sep 2025 13:38:54 -0400
Subject: Initial VHACD based llconvexdecomposition

---
 indra/llprimitive/CMakeLists.txt | 6 ++++++
 indra/llprimitive/llmodel.cpp    | 4 ++--
 indra/llprimitive/llmodel.h      | 3 ++-
 3 files changed, 10 insertions(+), 3 deletions(-)

(limited to 'indra/llprimitive')

diff --git a/indra/llprimitive/CMakeLists.txt b/indra/llprimitive/CMakeLists.txt
index e13f0bbd96..9e90314a51 100644
--- a/indra/llprimitive/CMakeLists.txt
+++ b/indra/llprimitive/CMakeLists.txt
@@ -70,6 +70,12 @@ target_link_libraries(llprimitive
         ll::glm
         )
 
+if (TARGET llconvexdecomposition)
+    target_link_libraries(llprimitive
+            llconvexdecomposition
+            )
+endif ()
+
 #add unit tests
 if (LL_TESTS)
     INCLUDE(LLAddBuildTest)
diff --git a/indra/llprimitive/llmodel.cpp b/indra/llprimitive/llmodel.cpp
index 00ef79ce7f..8055bffd32 100644
--- a/indra/llprimitive/llmodel.cpp
+++ b/indra/llprimitive/llmodel.cpp
@@ -1296,10 +1296,10 @@ LLModel::weight_list& LLModel::getJointInfluences(const LLVector3& pos)
 }
 
 void LLModel::setConvexHullDecomposition(
-    const LLModel::convex_hull_decomposition& decomp)
+    const LLModel::convex_hull_decomposition& decomp, const std::vector<LLModel::PhysicsMesh>& decomp_mesh)
 {
     mPhysics.mHull = decomp;
-    mPhysics.mMesh.clear();
+    mPhysics.mMesh = decomp_mesh;
     updateHullCenters();
 }
 
diff --git a/indra/llprimitive/llmodel.h b/indra/llprimitive/llmodel.h
index 6501b3dc50..ac88af18f0 100644
--- a/indra/llprimitive/llmodel.h
+++ b/indra/llprimitive/llmodel.h
@@ -305,7 +305,8 @@ public:
     S32 mDecompID;
 
     void setConvexHullDecomposition(
-        const convex_hull_decomposition& decomp);
+        const convex_hull_decomposition& decomp,
+        const std::vector<LLModel::PhysicsMesh>& decomp_mesh);
     void updateHullCenters();
 
     LLVector3 mCenterOfHullCenters;
-- 
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