gazebo_models/oak_tree/materials/scripts/oak_tree.material

material OakTree/Branch
{
  technique
  {
    shadow_caster_material "OakTree/shadow_caster_alpha"

    pass
    {
      alpha_rejection greater 128

      texture_unit
      {
        texture branch_diffuse.png
      }
    }
  }
}

material OakTree/Bark
{
  technique
  {
    pass
    {
      texture_unit
      {
        texture bark_diffuse.png
      }
    }
  }
}

vertex_program caster_vp_glsl glsl
{
  source caster_vp.glsl

  default_params
  {
    param_named_auto world_view_proj_mat worldviewproj_matrix
    param_named_auto texel_offsets texel_offsets
  }

}

fragment_program caster_fp_glsl glsl
{
  source caster_fp.glsl

  default_params
  {
    param_named tex int 0
  }
}


material OakTree/shadow_caster_alpha
{
  transparency_casts_shadows on
  technique
  {
    pass
    {
      // See: viewtopic.php?f=3&t=44817
      fog_override true

      cull_hardware none
      cull_software none

      alpha_rejection always_pass

      vertex_program_ref caster_vp_glsl
      {
      }

      fragment_program_ref caster_fp_glsl
      {
      }

      texture_unit tex
      {
        // Pass the texture with alpha channel to the caster
        texture branch_diffuse.png
      }
    }
  }
}