TilemapSpacing is broken when using atlas feature

[rparrett]

Version tested

MacOS (M1)
main branch

Problem

However, it seems that when using the atlas texture renderer, both tilemaps look very broken, but in different ways.

cargo run --example spacing --features=atlas

[dogue]

I'm not sure if it's related, but I ran into a bug with using array textures vs atlas textures when the tilesheet has spacing between tiles but not around the outer edges of the sheet. When using array, a 16x16 grid size with 16x16px tiles would obscure parts of the tiles. When using the atlas feature, the tiles render as expected with no gaps or overlaps.

Edit: Added reference images. The screenshot shows the issue I was seeing before switching to the atlas feature.

[rparrett]

I split out the non-atlas-related bits of this bug report into #364.