From 1132b19c06aa0b154991256e5063c78ad423bdc3 Mon Sep 17 00:00:00 2001
From: Andrey Lihatskiy <alihatskiy@productengine.com>
Date: Wed, 11 Jun 2025 12:31:47 +0300
Subject: #4114 Improve GLTF mesh uploader log 2

---
 indra/newview/gltf/llgltfloader.cpp                  | 20 +++++++++++++++++---
 .../skins/default/xui/en/floater_model_preview.xml   |  3 ++-
 2 files changed, 19 insertions(+), 4 deletions(-)

diff --git a/indra/newview/gltf/llgltfloader.cpp b/indra/newview/gltf/llgltfloader.cpp
index 3e7b14919b..ffe574f4b1 100644
--- a/indra/newview/gltf/llgltfloader.cpp
+++ b/indra/newview/gltf/llgltfloader.cpp
@@ -309,6 +309,21 @@ bool LLGLTFLoader::parseMeshes()
         return false;
     }
 
+    // Check total model count against limit
+    U32 total_models = static_cast<U32>(mModelList.size());
+    if (total_models > mGeneratedModelLimit)
+    {
+        LL_WARNS("GLTF_IMPORT") << "Model contains " << total_models
+                                << " mesh parts, exceeding the limit of " << mGeneratedModelLimit << LL_ENDL;
+
+        LLSD args;
+        args["Message"] = "TooManyMeshParts";
+        args["PART_COUNT"] = static_cast<S32>(total_models);
+        args["LIMIT"] = static_cast<S32>(mGeneratedModelLimit);
+        mWarningsArray.append(args);
+        return false;
+    }
+
     return true;
 }
 
@@ -843,13 +858,12 @@ bool LLGLTFLoader::populateModelFromMesh(LLModel* pModel, const LL::GLTF::Mesh&
         {
             LL_INFOS("GLTF_IMPORT") << "Unable to process mesh '" << mesh.mName
                                     << "' primitive " << prim_idx
-                                    << " due to 16-bit index limits. Vertex count: "
-                                    << prim.getVertexCount() << " exceeds limit: " << USHRT_MAX << LL_ENDL;
+                                    << " due to 65,534 vertex limit. Vertex count: "
+                                    << prim.getVertexCount() << LL_ENDL;
             LLSD args;
             args["Message"] = "ErrorIndexLimit";
             args["MESH_NAME"] = mesh.mName.empty() ? ("mesh_" + std::to_string(&mesh - &mGLTFAsset.mMeshes[0])) : mesh.mName;
             args["VERTEX_COUNT"] = static_cast<S32>(prim.getVertexCount());
-            args["LIMIT"] = USHRT_MAX;
             mWarningsArray.append(args);
             return false;
         }
diff --git a/indra/newview/skins/default/xui/en/floater_model_preview.xml b/indra/newview/skins/default/xui/en/floater_model_preview.xml
index d9a344ba41..759952b162 100644
--- a/indra/newview/skins/default/xui/en/floater_model_preview.xml
+++ b/indra/newview/skins/default/xui/en/floater_model_preview.xml
@@ -66,10 +66,11 @@
   <string name="NoScenesFound">No scenes defined in GLTF file</string>
   <string name="InvalidMeshReference">Node [NODE_NAME] references invalid mesh [MESH_INDEX] (total meshes: [TOTAL_MESHES])</string>
   <string name="InvalidGeometryNonTriangulated">Mesh [MESH_NAME] primitive [PRIMITIVE_INDEX]: Invalid geometry with [INDEX_COUNT] indices (must be triangulated)</string>
-  <string name="ErrorIndexLimit">Mesh [MESH_NAME]: Vertex count [VERTEX_COUNT] exceeds 16-bit limit of [LIMIT]</string>
+  <string name="ErrorIndexLimit">Unable to process mesh [MESH_NAME] due to 65,534 vertex limit. Vertex count: [VERTEX_COUNT]</string>
   <string name="TextureFound">Found texture: [TEXTURE_NAME] for material: [MATERIAL_NAME]</string>
   <string name="IgnoredExtension">Model uses unsupported extension: [EXT], related material properties are ignored</string>
   <string name="UnsupportedExtension">Unable to load model, unsupported extension: [EXT]</string>
+  <string name="TooManyMeshParts">Model contains [PART_COUNT] mesh parts. Maximum allowed: [LIMIT]</string>
 
   <panel
     follows="top|left"
-- 
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