Updates the o3dConverter to turn on filtering by default...

converter/cross/converter_main.cc

 /*
  * Copyright 2009, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
@@ skipping 62 matching lines @@
   if (values.size() == 1) {
     // If we're only given one argument, then construct the output
     // filename by substituting the extension on the filename (if any)
     // with .o3dtgz.
     in_filename = o3d::WideToFilePath(values[0]);
     out_filename = in_filename.ReplaceExtension(FILE_PATH_LITERAL(".o3dtgz"));
   } else if (values.size()== 2) {
     in_filename = o3d::WideToFilePath(values[0]);
     out_filename = o3d::WideToFilePath(values[1]);
   } else {
-    std::cerr << "Usage:  " << argv[0]
-              << " [--no-condition] [--base-path=<path>] [--up-axis=x,y,z]"
-              << " [--pretty-print] <infile.dae> [ <outfile> ]\n";
+    std::cerr << "Usage: " << argv[0]
+              << " [ options ] <infile.dae> [ <outfile> ]\n";
+    std::cerr
+        << "--no-condition\n"
+        << "    Stops the converter from conditioning shaders.\n"
+        << "--base-path=<path>\n"
+        << "    Sets the base path for finding textures and other external\n"
+        << "    files.\n"
+        << "--up-axis=x,y,z\n"
+        << "    Converts the file to have this up axis.\n"
+        << "--pretty-print\n"
+        << "    Makes the exported JSON easier to read.\n"
+        << "--keep-filters\n"
+        << "    Stops the converter from forcing all texture samplers to use\n"
+        << "    tri-linear filtering.\n"
+        << "--keep-materials\n"
+        << "    Stops the converter from changing materials to <constant> if\n"
+        << "    they are used by a mesh that has no normals.\n";
     return EXIT_FAILURE;
   }
 
   o3d::converter::Options options;
   options.condition = !command_line->HasSwitch(L"no-condition");
   options.pretty_print = command_line->HasSwitch(L"pretty-print");
   if (command_line->HasSwitch(L"base-path")) {
     options.base_path = o3d::WideToFilePath(
         command_line->GetSwitchValue(L"base-path"));
   }
@@ skipping 21 matching lines @@
     return EXIT_SUCCESS;
   } else {
     std::cerr << error_messages.c_str() << std::endl;
     std::cerr << "FAILED to convert '"
               << o3d::FilePathToUTF8(in_filename).c_str()
               << "' to '" << o3d::FilePathToUTF8(out_filename).c_str()
               << "'." << std::endl;
     return EXIT_FAILURE;
   }
 }