Makie Texture Atlas Caching

Chrysoberyl · November 26, 2025, 2:21am

When using Makie offline, I got this warning:

Warning: downloading texture atlas failed, need to re-create from scratch.
exception =
RequestError: Could not resolve host: github.com while requesting https://github.com/MakieOrg/Makie.jl/releases/download/v0.21.0/v7_texture_atlas_2048_64.bin

and later

Warning: Makie is caching fonts, this may take a while. This should usually not happen, unless you're getting your own texture atlas or are without internet!

This is for offline deployment to a computing cluster. Is there a way to download the atlas on a build machine and then copy it to the computing machines so Makie doesn’t need to spend time on the texture atlas and fonts?

sdanisch · November 26, 2025, 12:07pm

You can get the urls and paths Makie expect the texture atlas from this function:

github.com/MakieOrg/Makie.jl

Makie/src/utilities/texture_atlas.jl

master


      
          function cached_load(resolution::Int, pix_per_glyph::Int)
              path = get_cache_path(resolution, pix_per_glyph)
              if !isfile(path)
                  try
                      url = CACHE_DOWNLOAD_URL * basename(path)
                      Downloads.download(url, path)
                  catch e
                      @warn "downloading texture atlas failed, need to re-create from scratch." exception = (e, Base.catch_backtrace())
                  end
              end
              if isfile(path)
                  try
                      return load_texture_atlas(path)
                  catch e
                      @warn "reading texture atlas on disk failed, need to re-create from scratch." exception = (e, Base.catch_backtrace())
                      rm(path; force = true)
                  end
              end
              atlas = TextureAtlas(; resolution = resolution, pix_per_glyph = pix_per_glyph)
              @warn("Makie is caching fonts, this may take a while. This should usually not happen, unless you're getting your own texture atlas or are without internet!")

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This should allow you to ship it I suppose.
The clean way would be to ship it as an artifact, if you have time for a PR
We already have an artifact for other assets:
Makie.jl/Makie/Artifacts.toml at master · MakieOrg/Makie.jl · GitHub
Which was generated with this helper script:
Makie.jl/tooling/create-artifacts.jl at 46d9c5e3cb7adacdd0dbe364005baa9a6c656f97 · MakieOrg/Makie.jl · GitHub

Chrysoberyl · November 26, 2025, 11:07pm

It seems like there are many texture atlases depending on resolution. How could an artifact-based solution work?

sdanisch · November 27, 2025, 9:39am

in Theory, yes, but actually we only use one resolution. we used two previously, but now all backends use the same.
So only get_texture_atlas(2048, 64) should be used!
And like previously, if we don’t have an artifact for a combination we’d generate it

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Makie Texture Atlas Caching

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