OpenMW/files/materials/sky.mat

material openmw_moon
{
    mrt_output true
    pass
    {
        vertex_program moon_vertex
        fragment_program moon_fragment
        
        polygon_mode_overrideable off
        
        shader_properties
        {
            mrt_output $mrt_output
        }
        
        texture_unit diffuseMap
        {
            texture $diffuseMap
            create_in_ffp true
        }
    }
}

material openmw_clouds
{
    mrt_output true
    pass
    {
        vertex_program clouds_vertex
        fragment_program clouds_fragment
        
        polygon_mode_overrideable off

        scene_blend alpha_blend
        depth_write off

        shader_properties
        {
            mrt_output $mrt_output
        }

        // second diffuse map is used for weather transitions
        texture_unit diffuseMap1
        {
            texture $diffuseMap1
            create_in_ffp true
        }
        
        texture_unit diffuseMap2
        {
            texture $diffuseMap2
        }
    }
}

material openmw_atmosphere
{
    mrt_output true
    pass
    {
        vertex_program atmosphere_vertex
        fragment_program atmosphere_fragment
        
        polygon_mode_overrideable off
        
        scene_blend alpha_blend
        depth_write off
        
        shader_properties
        {
            mrt_output $mrt_output
        }
    }
}

material openmw_stars
{
    mrt_output true
    pass
    {
        vertex_program stars_vertex
        fragment_program stars_fragment
        
        polygon_mode_overrideable off
 
        shader_properties
        {
            mrt_output $mrt_output
        }

        texture_unit diffuseMap
        {
            diffuseMap $diffuseMap
        }
    }
}

// used for both sun and sun glare
material openmw_sun
{
    mrt_output true
    pass
    {
        vertex_program sun_vertex
        fragment_program sun_fragment

        polygon_mode_overrideable off
        
        shader_properties
        {
            mrt_output $mrt_output
        }
        
        texture unit diffuseMap
        {
            diffuseMap $diffuseMap
        }
    }
}