[nicalsilva]

(I'm the author of the blog post) Yes, WebRender could repack it's texture atlases. A lot of stuff of various sizes go in there so I would not want to rely on repacking large amounts of pixels frequently but it could, among other things, help with more quickly converging back to a single texture atlas after an allocation spike. To my knowledge WebRender cannot move data within a texture using the OpenGL version it's restricted to.

[aappleby]

Just wanted to let you know that you converged on the same solution (nested 1d allocators) that I came up with for Google Maps back in 2013ish.

We also made heavy use of allocation bitmaps and a few other tricks to ensure that the texture allocator does zero dynamic memory allocation at runtime, as that could cause performance bubbles.

[aappleby]

Oh, and we had similar visualizers for atlas usage but they were live views in a popup window rendered via canvas.