fgdata/gui/dialogs/shader-options.xml

<?xml version="1.0"?>

<PropertyList>
    <name>shader-options</name>
    <modal>false</modal>
    <layout>vbox</layout>

    <checkbox>
        <halign>left</halign>
        <label>Enable effects</label>
        <property>/sim/rendering/shader-effects</property>
        <binding>
            <command>dialog-apply</command>
        </binding>
    </checkbox>

    <hrule/>

    <group>
        <layout>vbox</layout>
        <halign>center</halign>
        <group>
            <layout>hbox</layout>
            <halign>left</halign>
            <checkbox>
                <halign>left</halign>
                <label>Crop texture</label>
                <property>/sim/rendering/crop-shader</property>
                <binding>
                    <command>dialog-apply</command>
                </binding>
            </checkbox>
            <checkbox>
                <halign>left</halign>
                <label>Landmass effects</label>
                <property>/sim/rendering/landmass-shader</property>
                <binding>
                    <command>dialog-apply</command>
                </binding>
            </checkbox>
        </group>
        <group>
            <layout>hbox</layout>
            <halign>left</halign>
            <checkbox>
                <halign>left</halign>
                <label>Water reflection</label>
                <property>/sim/rendering/water-shader</property>
                <binding>
                    <command>dialog-apply</command>
                </binding>
            </checkbox>
        </group>
    </group>

    <hrule/>

    <button>
        <legend>Close</legend>
        <default>true</default>
        <key>Esc</key>
        <binding>
            <command>dialog-apply</command>
        </binding>
        <binding>
            <command>dialog-close</command>
        </binding>
    </button>

</PropertyList>