Hello, I'm hoping for some help fixing these weird tears that appear in my autotile tilemaps. They only appear horizontally when moving left and I'm stumped as to why.

The map is generated with noise functions 1 tile wide around the perimeter of the screen. If moving left it generates a a single line of tiles outside the camera on the left side, and unloads the ones on the right side and vice versa. I also have run the code where it generates the entire viewport and the same thing happens when moving left.

The squares I am working on are red on the tileset in the photo.

Don't worry about the transparency, that's intentional for now.


A video can be seen here:

Perhaps you need to enable VSYNC.