5 files changed, 49 insertions, 3 deletions
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/llgltfmaterial.cpp b/indra/llprimitive/llgltfmaterial.cpp
index cc4921416f..930222e3db 100644
--- a/indra/llprimitive/llgltfmaterial.cpp
+++ b/indra/llprimitive/llgltfmaterial.cpp
@@ -923,3 +923,34 @@ void LLGLTFMaterial::updateTextureTracking()
     // setTEGLTFMaterialOverride is responsible for tracking
     // for material overrides editor will set it
 }
+
+void LLGLTFMaterial::convertTextureTransformToPBR(
+    F32 tex_scale_s,
+    F32 tex_scale_t,
+    F32 tex_offset_s,
+    F32 tex_offset_t,
+    F32 tex_rotation,
+    LLVector2& pbr_scale,
+    LLVector2& pbr_offset,
+    F32& pbr_rotation)
+{
+    pbr_scale.set(tex_scale_s, tex_scale_t);
+    pbr_rotation = -(tex_rotation) / 2.f;
+    const F32 adjusted_offset_s = tex_offset_s;
+    const F32 adjusted_offset_t = -tex_offset_t;
+    F32 center_adjust_s = 0.5f * (1.0f - tex_scale_s);
+    F32 center_adjust_t = 0.5f * (1.0f - tex_scale_t);
+
+    if (pbr_rotation != 0.0f)
+    {
+        const F32 c = cosf(pbr_rotation);
+        const F32 s = sinf(pbr_rotation);
+        const F32 tmp_s = center_adjust_s * c - center_adjust_t * s;
+        const F32 tmp_t = center_adjust_s * s + center_adjust_t * c;
+        center_adjust_s = tmp_s;
+        center_adjust_t = tmp_t;
+    }
+
+    pbr_offset.set(adjusted_offset_s + center_adjust_s,
+                   adjusted_offset_t + center_adjust_t);
+}
diff --git a/indra/llprimitive/llgltfmaterial.h b/indra/llprimitive/llgltfmaterial.h
index 10df4c8ee1..8d45cb6185 100644
--- a/indra/llprimitive/llgltfmaterial.h
+++ b/indra/llprimitive/llgltfmaterial.h
@@ -214,6 +214,14 @@ public:
     bool hasLocalTextures() { return !mTrackingIdToLocalTexture.empty(); }
     virtual bool replaceLocalTexture(const LLUUID& tracking_id, const LLUUID &old_id, const LLUUID& new_id);
     virtual void updateTextureTracking();
+
+    // Convert legacy TE transform values to PBR transform values.
+    static void convertTextureTransformToPBR(F32 tex_scale_s, F32 tex_scale_t,
+                                             F32 tex_offset_s, F32 tex_offset_t,
+                                             F32 tex_rotation,
+                                             LLVector2& pbr_scale,
+                                             LLVector2& pbr_offset,
+                                             F32& pbr_rotation);
 protected:
     static LLVector2 vec2FromJson(const std::map<std::string, tinygltf::Value>& object, const char* key, const LLVector2& default_value);
     static F32 floatFromJson(const std::map<std::string, tinygltf::Value>& object, const char* key, const F32 default_value);
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;