Update XGfxDrawSurfFields parsing logic

libs/xassets/xgfxdrawsurffields.cpp

@@ -17,7 +17,20 @@ XGfxDrawSurfFields::XGfxDrawSurfFields()
 
 void XGfxDrawSurfFields::ParseData(QDataStream *aStream)
 {
-    
+    // Read the raw 64-bit value from the stream
+    quint64 raw = 0;
+    *aStream >> raw;
+
+    // Decode bitfields from the 64-bit packed value
+    mObjectId             =  raw        & 0xFFFF;        // bits 0-15
+    mReflectionProbeIndex = (raw >> 16) & 0xFF;          // bits 16-23
+    mCustomIndex          = (raw >> 24) & 0x1F;          // bits 24-28
+    mMaterialSortedIndex  = (raw >> 29) & 0x7FF;         // bits 29-39
+    mPrepass              = (raw >> 40) & 0x3;           // bits 40-41
+    mPrimaryLightIndex    = (raw >> 42) & 0xFF;          // bits 42-49
+    mSurfType             = (raw >> 50) & 0xF;           // bits 50-53
+    mPrimarySortKey       = (raw >> 54) & 0x3F;          // bits 54-59
+    mUnused               = (raw >> 60) & 0xF;           // bits 60-63
 }
 
 void XGfxDrawSurfFields::Clear()