material Material/TerrainTest
{
    receive_shadows on

    technique
    {
        // base pass
        pass
        {
            // no lighting
            lighting off

            texture_unit
            {
                // We use the grass texture as the base. other textures are blended over it
                texture Grass.jpg
                // Scale the texture so, that it looks nice
                scale 0.1 0.1
                // Only blend colour
                //colour_op_ex source1 src_texture src_texture
            }
        }

        // dirt pass
        pass
        {
            // no lighting
            lighting off

            // blend with former pass
            scene_blend alpha_blend

            // only overwrite fragments with the same depth
            depth_func equal

            // alpha map for the dirt
            texture_unit
            {
                texture TestAlpha1.png

                // use alpha from this texture
                alpha_op_ex source1 src_texture src_texture
                // and colour from last pass
                colour_op_ex source2 src_texture src_texture
            }

            // detail texture
            texture_unit
            {
                texture Dirt.jpg
                scale 0.15 0.15
                // alpha blend colour with colour from last pass
                colour_op_ex blend_diffuse_alpha src_texture src_current
            }
        }

        // rock pass
        pass
        {
            // no lighting
            lighting off

            // blend with former pass
            scene_blend alpha_blend

            // only overwrite fragments with the same depth
            depth_func equal

            // alpha map for the dirt
            texture_unit
            {
                texture TestAlpha2.png

                // use alpha from this texture
                alpha_op_ex source1 src_texture src_texture
                // and colour from last pass
                colour_op_ex source2 src_texture src_texture
            }

            // detail texture
            texture_unit
            {
                texture RoughRock.jpg
                scale 0.15 0.15
                // alpha blend colour with colour from last pass
                colour_op_ex blend_diffuse_alpha src_texture src_current
            }
        }
        // .... further detail passes like the former one

        // lighting pass
        pass
        {
            ambient 0.8 0.8 0.8 1
            diffuse 0.7 0.7 0.7


            depth_func equal
            scene_blend zero src_colour
        }
    }
}