message: Don't launch pixel history on failure if the feature is not supported
diff: @@ -3805,7 +3805,10 @@ void TextureViewer::on_debugPixelContext_clicked()
  // if we couldn't debug the pixel on this event, open up a pixel history
  if(!trace)
  {
  + if(m_Ctx.APIProps().pixelHistory)
  on_pixelHistory_clicked();
  + else
  + RDDialog::critical(this, tr("Debug Error"), tr("Error debugging pixel."));
  return;
  }
  