<field type="INT16" name="drawable_size_W" />
<field type="INT16" name="drawable_size_H" />
<field type="CARD32" name="num_clip_rects" />
<field type="INT16" name="drawable_size_W" />
<field type="INT16" name="drawable_size_H" />
<field type="CARD32" name="num_clip_rects" />