main/x11/library/mesa/files/drirc

<driconf>
    <device screen="0" driver="i915">
        <application name="Default">
            <option name="vblank_mode" value="0" />
        </application>
    </device>
    <device screen="0" driver="i965">
        <application name="Default">
            <option name="vblank_mode" value="0" />
        </application>
    </device>
    <device screen="0" driver="r300">
        <application name="Default">
            <option name="vblank_mode" value="0" />
            <option name="force_s3tc_enable" value="false" />
            <option name="disable_lowimpact_fallback" value="true" />
        </application>
    </device>
</driconf>