nz-bathymetry-hillslopeshade.xml

<Map srs="+proj=merc +lon_0=100 +lat_ts=-41 +x_0=0 +y_0=0 +datum=WGS84 +units=m +no_defs">

  <Style name="hillshade style">
    <Rule>
      <RasterSymbolizer scaling="bilinear" />
    </Rule>
  </Style>
  <Style name="slopeshade style">
    <Rule>
      <RasterSymbolizer scaling="bilinear" mode="screen" />
    </Rule>
  </Style>

  <Layer name="hillshade">
    <StyleName>hillshade style</StyleName>
    <Datasource>
      <Parameter name="type">gdal</Parameter>
      <Parameter name="file">nz-bathymetry-hillshade.tif</Parameter>
    </Datasource>
  </Layer>  
  <Layer name="slopeshade">
    <StyleName>slopeshade style</StyleName>
    <Datasource>
      <Parameter name="type">gdal</Parameter>
      <Parameter name="file">nz-bathymetry-slopeshade.tif</Parameter>
    </Datasource>
  </Layer>  

</Map>