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<layer_name>
<layer_index>0</layer_index>
<layer_name>sun</layer_name>
</layer_name>
<layer_name>
<layer_index>1</layer_index>
<layer_name>cube</layer_name>
</layer_name>
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<background_settings>
<background_material>
<material>
<name>background</name>
<diffuse>
<texture>
<uv_set>albedo</uv_set>
<path>g:\textures\maps-hdr lat-long\night at wharf.exr</path>
<exponent>1</exponent>
<tex_coord_generation>
<spherical>
<rotation>
<axis_rotation>
<axis>0 0 1</axis>
<angle>0.174532</angle>
</axis_rotation>
</rotation>
</spherical>
</tex_coord_generation>
</texture>
<base_emission>
<constant>
<blackbody>
<temperature>5000</temperature>
<gain>1</gain>
</blackbody>
</constant>
</base_emission>
<emission>
<texture>
<texture_index>0</texture_index>
</texture>
</emission>
</diffuse>
</material>
</background_material>
<emission_scale>
<material_name>background_material</material_name>
<measure>luminance</measure>
<value>1+e8</value>
</emission_scale>
</background_settings>