mapblock_mesh_generate_special(data, collector);


        /*
                Convert MeshCollector to SMesh
        */
        bool enable_bumpmapping = g_settings->getBool("enable_bumpmapping");


            bool enable_shaders = g_settings->getBool("enable_shaders");
            video::E_MATERIAL_TYPE shadermat1;
            video::E_MATERIAL_TYPE shadermat2;
            video::E_MATERIAL_TYPE shadermat3;
            video::E_MATERIAL_TYPE bumpmaps1;
            video::E_MATERIAL_TYPE bumpmaps2;
            if (enable_shaders) {
                    shadermat1 = m_gamedef->getShaderSource()->
                            getShader("test_shader_1").material;
                    shadermat2 = m_gamedef->getShaderSource()->
                            getShader("test_shader_2").material;
                    shadermat3 = m_gamedef->getShaderSource()->
                            getShader("test_shader_3").material;
                    bumpmaps1 = m_gamedef->getShaderSource()->
                            getShader("bumpmaps_solids").material;
                    bumpmaps2 = m_gamedef->getShaderSource()->
                            getShader("bumpmaps_liquids").material;
            }


        for(u32 i = 0; i < collector.prebuffers.size(); i++)
        {