From 26a2139b9b259a90e91ff035d7c7aa175f4bde4f Mon Sep 17 00:00:00 2001
From: yiwenxue <15225434259xue@gmail.com>
Date: Thu, 7 Sep 2023 18:44:39 +0800
Subject: [PATCH] tune, fix bug

---
 native/cocos/3d/assets/Mesh.cpp     |  8 ++++----
 native/cocos/3d/misc/CreateMesh.cpp | 14 +++++++++++---
 2 files changed, 15 insertions(+), 7 deletions(-)

diff --git a/native/cocos/3d/assets/Mesh.cpp b/native/cocos/3d/assets/Mesh.cpp
index db2fe919c5f..8446ec0f51e 100644
--- a/native/cocos/3d/assets/Mesh.cpp
+++ b/native/cocos/3d/assets/Mesh.cpp
@@ -287,7 +287,7 @@ void MeshUtils::dequantizeMesh(Mesh::IStruct &structInfo, Uint8Array &data) {
                 const auto inputOffset = readerStride * i + 2 * j;
                 const auto outputOffset = writerStride * i + 4 * j;
                 const auto val = mathutils::halfToFloat(ccstd::get<uint16_t>(reader(inputOffset)));
-                writer(outputOffset, reader(inputOffset));
+                writer(outputOffset, val);
             }
         }
     };
@@ -329,11 +329,11 @@ void MeshUtils::dequantizeMesh(Mesh::IStruct &structInfo, Uint8Array &data) {
             readers.push_back(reader);
         }
         auto netStride = std::accumulate(strides.begin(), strides.end(), 0U);
-        auto *buffer = ccnew ArrayBuffer(view.count * netStride);
+        auto vertData = Uint8Array(view.count * netStride);
         for (uint32_t i = 0; i < attrs.size(); i++) {
             const auto &attr = attrs[i];
             const auto &reader = readers[i];
-            auto outputView = DataView(buffer, getOffset(attrs, i));
+            auto outputView = DataView(vertData.buffer(), getOffset(attrs, i));
             auto writer = getWriter(outputView, attr.format);
             const auto &dequantize = dequantizes[i];
             const auto &formatInfo = gfx::GFX_FORMAT_INFOS[static_cast<uint32_t>(attr.format)];
@@ -364,7 +364,7 @@ void MeshUtils::dequantizeMesh(Mesh::IStruct &structInfo, Uint8Array &data) {
         vertexView.count = view.count;
         vertexView.stride = netStride;
         bundle.view = vertexView;
-        bufferBlob.addBuffer(buffer);
+        bufferBlob.addBuffer(vertData.buffer());
     }
 
     for (auto &primitive : structInfo.primitives) {
diff --git a/native/cocos/3d/misc/CreateMesh.cpp b/native/cocos/3d/misc/CreateMesh.cpp
index e479a23d33d..ffed86a849d 100644
--- a/native/cocos/3d/misc/CreateMesh.cpp
+++ b/native/cocos/3d/misc/CreateMesh.cpp
@@ -409,14 +409,22 @@ Mesh::ICreateInfo MeshUtils::createDynamicMeshInfo(const IDynamicGeometry &geome
 void MeshUtils::inflateMesh(const Mesh::IStruct &structInfo, Uint8Array &data) {
     uLongf uncompressedSize = 0U;
     for (const auto &prim : structInfo.primitives) {
-        uncompressedSize += prim.indexView->length;
+        if (prim.indexView.has_value()) {
+            uncompressedSize += prim.indexView->length + prim.indexView->stride;
+        }
+        if (prim.cluster.has_value()) {
+            uncompressedSize += prim.cluster->vertexView.length + prim.cluster->vertexView.stride;
+            uncompressedSize += prim.cluster->triangleView.length + prim.cluster->triangleView.stride;
+            uncompressedSize += prim.cluster->clusterView.length + prim.cluster->clusterView.stride;
+            uncompressedSize += prim.cluster->coneView.length + prim.cluster->coneView.stride;
+        }
     }
     for (const auto &vb : structInfo.vertexBundles) {
-        uncompressedSize += vb.view.length;
+        uncompressedSize += vb.view.length + vb.view.stride;
     }
     auto uncompressedData = Uint8Array(static_cast<uint32_t>(uncompressedSize));
     auto res = uncompress(uncompressedData.buffer()->getData(), &uncompressedSize, data.buffer()->getData(), data.byteLength());
-    data = uncompressedData;
+    data = Uint8Array(uncompressedData.buffer(), 0, static_cast<uint32_t>(uncompressedSize));
 }
 
 void MeshUtils::decodeMesh(Mesh::IStruct &structInfo, Uint8Array &data) {