Method updateWatchVariables

qrenderdoc/Windows/ShaderViewer.cpp:4875–4944

}

void ShaderViewer::updateWatchVariables()
{
  QSignalBlocker block(ui->watch);

  RDTreeViewExpansionState expansion;
  ui->watch->saveExpansion(expansion, 0);

  ui->watch->beginUpdate();

  for(int i = 0; i < ui->watch->topLevelItemCount() - 1; i++)
  {
    RDTreeWidgetItem *item = ui->watch->topLevelItem(i);

    QString expr = item->text(0).trimmed();

    QRegularExpression exprRE(
        lit("^"                 // beginning of the line
            "([^,]+)"           // variable path
            "(,[iduxbocf])?"    // optional typecast
            "$"));              // end of the line

    QRegularExpressionMatch match = exprRE.match(expr);

    QString error = tr("Error evaluating expression");

    if(match.hasMatch())
    {
      QString path = match.captured(1);
      QChar regcast = QLatin1Char(' ');
      if(!match.captured(2).isEmpty())
        regcast = match.captured(2)[1];

      SourceVariableMapping mapping;
      ShaderVariable var;
      uint32_t swizzle = ~0U;
      const RDTreeWidgetItem *varItem = getVarFromPath(path, &var, &swizzle, &mapping);
      if(varItem)
      {
        if(updateWatchVariable(item, varItem, path, swizzle, mapping, var, regcast))
          continue;

        error = tr("Couldn't evaluate watch for '%1'").arg(expr);
      }
      else if(item->childCount())
      {
        markWatchStale(item);
        continue;
      }
      else
      {
        error = tr("Couldn't find variable for '%1'").arg(path);
      }
    }

    // if we got here, something went wrong.
    VariableTag tag;
    item->setItalic(false);
    item->setText(1, QString());