type materialargumentdef [display="Material Argument Def"]
{
  // MaterialArgumentDef is a 4-byte union on PC:
  // - float* literalConst (pointer)
  // - MaterialArgumentCodeConst codeConst (u16 index + u16 firstRow)
  // - u32 codeSampler
  // - u32 nameHash
  // We just read it as raw bytes since interpretation depends on arg type
  value = read(4) [ui, readonly, display="Value"];
}