Method getRegNames

qrenderdoc/Windows/ShaderViewer.cpp:3232–3445

}

QString ShaderViewer::getRegNames(const RDTreeWidgetItem *item, uint32_t swizzle, uint32_t child)
{
  VariableTag tag = item->tag().value<VariableTag>();

  if(tag.absoluteRefPath.empty())
    return QString();

  if(tag.debugVarType != DebugVariableType::Undefined)
  {
    DebugVariableReference debugVar;
    debugVar.type = tag.debugVarType;
    debugVar.name = tag.absoluteRefPath;

    const ShaderVariable *reg = GetDebugVariable(debugVar);

    return reg->name;
  }

  SourceVariableMapping mapping;

  VariableTag itemTag = tag;

  // if this an expanded node (when a single source variable maps to a complex struct/array)
  // search up to the nearest parent which isn't
  const RDTreeWidgetItem *cur = item;
  while(tag.expanded)
  {
    cur = cur->parent();
    tag = cur->tag().value<VariableTag>();
  }

  // check if it's a local or global source var and look up the mapping
  if(tag.globalSourceVar && tag.sourceVarIdx >= 0 && tag.sourceVarIdx < m_Trace->sourceVars.count())
  {
    mapping = m_Trace->sourceVars[tag.sourceVarIdx];
  }
  else if(!tag.globalSourceVar && tag.sourceVarIdx >= 0 &&
          tag.sourceVarIdx < GetCurrentInstInfo().sourceVars.count())
  {
    mapping = GetCurrentInstInfo().sourceVars[tag.sourceVarIdx];
  }
  else
  {
    // if there's no source mapping, we assume this is a root node of a struct, which has no reg
    // names
    return QString();
  }

  QString ret;

  // if we have a 'tail' referencing values inside this mapping, need to evaluate that
  if(cur != item)
  {
    // we don't support combining complex structs from multiple places, we should only have one
    // mapping here
    if(mapping.variables.size() != 1)
      return QString();