/// @param gridSize size of grid in pixels

var gridSize = argument0;

//create our vertex format
vertex_format_begin();
    vertex_format_add_position_3d();
    vertex_format_add_normal();
    vertex_format_add_color()
    vertex_format_add_texcoord();

var format = vertex_format_end();

//create our vertex buffer
v_cell = vertex_create_buffer();

vertex_begin(v_cell, format);

//first wall
    //first polygon
vertex_position_3d(v_cell, x, y, depth);
vertex_normal(v_cell, 1, 1, 0);
vertex_color(v_cell, c_white, 1);
vertex_texcoord(v_cell, 0, 0);

vertex_position_3d(v_cell, x + gridSize, y, depth);
vertex_normal(v_cell, 1, 1, 0);
vertex_color(v_cell, c_white, 1);
vertex_texcoord(v_cell, 1, 0);

vertex_position_3d(v_cell, x, y, depth - gridSize);
vertex_normal(v_cell, 1, 1, 0);
vertex_color(v_cell, c_white, 1);
vertex_texcoord(v_cell, 0, 1);

    //second polygon
vertex_position_3d(v_cell, x, y, depth - gridSize);
vertex_normal(v_cell, 1, 1, 0);
vertex_color(v_cell, c_white, 1);
vertex_texcoord(v_cell, 0, 1);

vertex_position_3d(v_cell, x + gridSize, y, depth);
vertex_normal(v_cell, 1, 1, 0);
vertex_color(v_cell, c_white, 1);
vertex_texcoord(v_cell, 1, 0);

vertex_position_3d(v_cell, x + gridSize, y, depth - gridSize);
vertex_normal(v_cell, 1, 1, 0);
vertex_color(v_cell, c_white, 1);
vertex_texcoord(v_cell, 1, 1);

//second wall
    //first polygon
vertex_position_3d(v_cell, x, y, depth);
vertex_normal(v_cell, 1, 1, 0);
vertex_color(v_cell, c_white, 1);
vertex_texcoord(v_cell, 0, 0);

vertex_position_3d(v_cell, x, y, depth - gridSize);
vertex_normal(v_cell, 1, 1, 0);
vertex_color(v_cell, c_white, 1);
vertex_texcoord(v_cell, 0, 1);

vertex_position_3d(v_cell, x, y + gridSize, depth);
vertex_normal(v_cell, 1, 1, 0);
vertex_color(v_cell, c_white, 1);
vertex_texcoord(v_cell, 1, 0);

    //second polygon
vertex_position_3d(v_cell, x, y + gridSize, depth);
vertex_normal(v_cell, 1, 1, 0);
vertex_color(v_cell, c_white, 1);
vertex_texcoord(v_cell, 1, 0);

vertex_position_3d(v_cell, x, y, depth - gridSize);
vertex_normal(v_cell, 1, 1, 0);
vertex_color(v_cell, c_white, 1);
vertex_texcoord(v_cell, 0, 1);

vertex_position_3d(v_cell, x, y + gridSize, depth - gridSize);
vertex_normal(v_cell, 1, 1, 0);
vertex_color(v_cell, c_white, 1);
vertex_texcoord(v_cell, 1, 1);

//third wall
    //first polygon
vertex_position_3d(v_cell, x, y + gridSize, depth);
vertex_normal(v_cell, 1, 1, 0);
vertex_color(v_cell, c_white, 1);
vertex_texcoord(v_cell, 0, 0);

vertex_position_3d(v_cell, x, y + gridSize, depth - gridSize);
vertex_normal(v_cell, 1, 1, 0);
vertex_color(v_cell, c_white, 1);
vertex_texcoord(v_cell, 0, 1);

vertex_position_3d(v_cell, x + gridSize, y + gridSize, depth);
vertex_normal(v_cell, 1, 1, 0);
vertex_color(v_cell, c_white, 1);
vertex_texcoord(v_cell, 1, 0);

    //second polygon
vertex_position_3d(v_cell, x + gridSize, y + gridSize, depth);
vertex_normal(v_cell, 1, 1, 0);
vertex_color(v_cell, c_white, 1);
vertex_texcoord(v_cell, 1, 0);

vertex_position_3d(v_cell, x, y + gridSize, depth - gridSize);
vertex_normal(v_cell, 1, 1, 0);
vertex_color(v_cell, c_white, 1);
vertex_texcoord(v_cell, 0, 1);

vertex_position_3d(v_cell, x + gridSize, y + gridSize, depth - gridSize);
vertex_normal(v_cell, 1, 1, 0);
vertex_color(v_cell, c_white, 1);
vertex_texcoord(v_cell, 1, 1);

//fourth wall
    //first polygon
vertex_position_3d(v_cell, x + gridSize, y + gridSize, depth);
vertex_normal(v_cell, 1, 1, 0);
vertex_color(v_cell, c_white, 1);
vertex_texcoord(v_cell, 0, 0);

vertex_position_3d(v_cell, x + gridSize, y + gridSize, depth - gridSize);
vertex_normal(v_cell, 1, 1, 0);
vertex_color(v_cell, c_white, 1);
vertex_texcoord(v_cell, 0, 1);

vertex_position_3d(v_cell, x + gridSize, y, depth);
vertex_normal(v_cell, 1, 1, 0);
vertex_color(v_cell, c_white, 1);
vertex_texcoord(v_cell, 1, 0);

    //second polygon
vertex_position_3d(v_cell, x + gridSize, y, depth);
vertex_normal(v_cell, 1, 1, 0);
vertex_color(v_cell, c_white, 1);
vertex_texcoord(v_cell, 1, 0);

vertex_position_3d(v_cell, x + gridSize, y + gridSize, depth - gridSize);
vertex_normal(v_cell, 1, 1, 0);
vertex_color(v_cell, c_white, 1);
vertex_texcoord(v_cell, 0, 1);

vertex_position_3d(v_cell, x + gridSize, y, depth - gridSize);
vertex_normal(v_cell, 1, 1, 0);
vertex_color(v_cell, c_white, 1);
vertex_texcoord(v_cell, 1, 1);

//Buffer End
vertex_end(v_cell);