How to save high resolution map created with "render_polygons" function

[datasever]

Hello,

Using the plot_3d and render_polygons functions, I created a two-layer map to appear one after the other. The map I created with plot_3d is a population density map. I've added county boundaries under render_polygons. I can save maps that I normally create with plot_3d in high resolution with "render_highquality". but this is a problem in the two-layer map I created. I especially want the 3d map to be high resolution again. how do i do this?

here is my code:

# plotting 3D

try(rgl::close3d())

pop_matrix %>%
  height_shade(texture = texture) %>%
  plot_3d(heightmap = pop_matrix,
          zscale = 250 / 2.5,
          solid = F,
          windowsize = c(1980,1080),
          clear_previous=TRUE)


render_camera(theta = 0,
              phi = 35,
              zoom = 0.4,
              fov = 90)

#We will apply a negative buffer to create space between adjacent polygons. You may 
#have to call `sf::sf_use_s2(FALSE)` before running this code to get it to run.
sf::sf_use_s2(FALSE)
mont_county_buff = sf::st_simplify(sf::st_buffer(tr_admin,-0.003), dTolerance=0.001)

render_camera(theta=10,  phi=20, zoom = 0.85, fov=0)
render_polygons(mont_county_buff, 
                extent = attr(delhi_raster,"extent"), bottom = -650, top=-653,
                color = "#e69c6b",
                parallel=TRUE,clear_previous=TRUE)

And additionally my stackoverflow post

Any help would be appreciated!