Graticule labels not rendered with super-sample anti-aliasing enabled

[bjlittle]

🐛 Bug Report

Enabling anti-aliasing type ssaa results in no labels being rendered for the meridians and parallels of a graticule e.g.,

Disabled

import geovista
import geovista.theme

plotter = geovista.GeoPlotter()
plotter.add_coastlines()
plotter.add_base_layer(texture=geovista.natural_earth_1())
plotter.add_graticule()
plotter.camera.zoom(1.5)
plotter.disable_anti_aliasing()
plotter.show()

FXAA - Fast Approximate Anti-Aliasing

import geovista
import geovista.theme

plotter = geovista.GeoPlotter()
plotter.add_coastlines()
plotter.add_base_layer(texture=geovista.natural_earth_1())
plotter.add_graticule()
plotter.camera.zoom(1.5)
plotter.enable_anti_aliasing(aa_type="fxaa")
plotter.show()

MSAA - Multi-Sample Anti-Aliasing

import geovista
import geovista.theme

plotter = geovista.GeoPlotter()
plotter.add_coastlines()
plotter.add_base_layer(texture=geovista.natural_earth_1())
plotter.add_graticule()
plotter.camera.zoom(1.5)
plotter.enable_anti_aliasing(aa_type="msaa", multi_samples=8)
plotter.show()

SSAA - Super-Sample Anti-Aliasing

import geovista
import geovista.theme

plotter = geovista.GeoPlotter()
plotter.add_coastlines()
plotter.add_base_layer(texture=geovista.natural_earth_1())
plotter.add_graticule()
plotter.camera.zoom(1.5)
plotter.enable_anti_aliasing(aa_type="ssaa")
plotter.show()

Environment

Please share the report generated by either of the following CLI commands:

scooby --report geovista

or

python -c "import geovista; print(geovista.Report())"

----------------------------------------------------------------------------------------
  Date: Fri Sep 01 13:13:39 2023 BST

                 OS : Linux
             CPU(s) : 4
            Machine : x86_64
       Architecture : 64bit
                RAM : 7.7 GiB
        Environment : Python
        File system : ext4
         GPU Vendor : Intel Open Source Technology Center
       GPU Renderer : Mesa DRI Intel(R) HD Graphics 4000 (IVB GT2)
        GPU Version : 4.2 (Core Profile) Mesa 20.0.8

  Python 3.11.4 | packaged by conda-forge | (main, Jun 10 2023, 18:08:17) [GCC 12.2.0]

            cartopy : 0.21.1
              click : 8.1.5
click-default-group : 1.2.2
            cmocean : v3.0.3
           colorcet : 3.0.1
           geovista : 0.4.0.dev9+dirty
         matplotlib : 3.7.2
            netcdf4 : 1.6.4
              numpy : 1.25.1
       platformdirs : 3.9.0
              pooch : v1.7.0
           pykdtree : 1.3.7.post0
             pyproj : 3.6.0
            pyvista : 0.40.1
             scooby : 0.7.2
                vtk : 9.2.6
            IPython : 8.14.0
        fastparquet : 2023.7.0
       nest_asyncio : 1.5.6
             pandas : 2.0.3
              scipy : 1.11.1
----------------------------------------------------------------------------------------

[bjlittle]

@tkoyama010 I think I've figured this one out and can replicate it in pyvista ...

Once I've confirmed the behaviour that I'm seeing, I'll share it here and consider whether to work around it or push a change to pyvista 👍

[tkoyama010]

Thanks. If you can reproduce the code with PyVista code, please get in touch with me or create an issue in PyVista!

[bjlittle]

@tkoyama010 Awesome, thanks.

Yeah, I've narrowed it down to some inconsistent behaviour within pyvista.plotting.plotter.BasePlotter.add_point_labels.

So it's outside geovista and a fix (or explanation) would benefit the general pyvista community.

I'll raise an issue on pyvista 👍

[bjlittle]

Reference pyvista/pyvista#4831

[github-actions]

In order to maintain a backlog of relevant issues, we automatically label them as stale after 180 days of inactivity.

If this issue is still important to you, then please comment on this issue and the stale label will be removed.

Otherwise this issue will be automatically closed in 28 days time.

[tkoyama010]

This is still important.