virtualx-engine/misc/dist/linux/org.godotengine.Godot.xml

<?xml version="1.0"?>
<mime-info xmlns="http://www.freedesktop.org/standards/shared-mime-info">
  <mime-type type="application/x-godot-project">
    <comment>Godot Engine project</comment>
    <icon name="x-godot-project" />
    <glob pattern="*.godot"/>
  </mime-type>

  <mime-type type="application/x-godot-resource">
    <comment>Godot Engine resource</comment>
    <icon name="x-godot-resource" />
    <glob pattern="*.res"/>
    <glob pattern="*.tres"/>
  </mime-type>

  <mime-type type="application/x-godot-scene">
    <comment>Godot Engine scene</comment>
    <icon name="x-godot-scene" />
    <glob pattern="*.scn"/>
    <glob pattern="*.tscn"/>
    <glob pattern="*.escn"/>
  </mime-type>

  <mime-type type="application/x-godot-shader">
    <comment>Godot Engine shader</comment>
    <icon name="x-godot-shader" />
    <glob pattern="*.gdshader"/>
  </mime-type>

  <mime-type type="application/x-gdscript">
    <comment>GDScript script</comment>
    <icon name="x-gdscript" />
    <glob pattern="*.gd"/>
  </mime-type>
</mime-info>