/**
* 
* \author Markus Wegmann
*
**/


material Godrays/Raw/Sun // Renders the sun as a single colored sphere. Z-buffering is enabled.
{
    technique
    {
        pass
        {
            ambient 1.0 1.0 1.0 1.0
            lightning off
        }
    }
}

material Godrays/Raw/Obstacle // Renders the sun as a single colored sphere. Z-buffering is enabled.
{
    technique
    {
        pass
        {
            ambient 0.0 0.0 0.0 1.0
            lightning off
        }
    }
}


fragment_program GodraysBlurFragmentProgram cg
{
    source Godrays_blur.cg
    entry_point godrays_blur
    profiles fp30 ps_3_0
}



material Godrays/Blur
{
    technique
    {
        texture_unit raw_decal
        {
            tex_address_mode border
            tex_border_colour 0.0 0.0 0.0 1.0 // Set manually to sky color by api.

            content_type compositor Godrays rt_raw
        }

        pass
        {
            fragment_program_ref GodraysBlurFragmentProgram
            { 
                param_indexed 0 float2 0.0 0.0
                param_indexed 1 float 1.0
                param_indexed 2 float 0.1
                param_indexed 3 float 0.7
            }
        }
    }
}

fragment_program GodraysCombineFragmentProgram cg
{
    source Godrays_blur.cg
    entry_point godrays_combine
    profiles fp30 ps_3_0
}

material Godrays/Combine
{
    technique
    {
        texture_unit scene_decal
        {
            content_type compositor Godrays rt_scene
        }
        texture_unit blur_decal
        {
            content_type compositor Godrays rt_blur
        }

        pass
        {  
            fragment_program_ref GodraysCombineFragmentProgram { }
        }
    }
}