message: Don't display a register/slot index for built-in shader variables
diff: @@ -515,8 +515,11 @@ void ShaderViewer::debugShader(const ShaderBindpointMapping *bind, const ShaderR
  QString semIdx = s.needSemanticIndex ? QString::number(s.semanticIndex) : QString();
  + QString regIdx =
  + s.systemValue == ShaderBuiltin::Undefined ? QString::number(s.regIndex) : lit("-");
  +
  ui->inputSig->addTopLevelItem(new RDTreeWidgetItem(
  - {name, semIdx, s.regIndex, TypeString(s), ToQStr(s.systemValue),
  + {name, semIdx, QString::number(s.regIndex), TypeString(s), ToQStr(s.systemValue),
  GetComponentString(s.regChannelMask), GetComponentString(s.channelUsedMask)}));
  }
  @@ -543,8 +546,11 @@ void ShaderViewer::debugShader(const ShaderBindpointMapping *bind, const ShaderR
  QString semIdx = s.needSemanticIndex ? QString::number(s.semanticIndex) : QString();
  + QString regIdx =
  + s.systemValue == ShaderBuiltin::Undefined ? QString::number(s.regIndex) : lit("-");
  +
  ui->outputSig->addTopLevelItem(new RDTreeWidgetItem(
  - {name, semIdx, s.regIndex, TypeString(s), ToQStr(s.systemValue),
  + {name, semIdx, regIdx, TypeString(s), ToQStr(s.systemValue),
  GetComponentString(s.regChannelMask), GetComponentString(s.channelUsedMask)}));
  }
  }
  