In my game (Godot 4.3 stable), I display enemies as Sprite3D billboards with the texture drawn from a 16 by 8 element atlas. No matter what I try, I have not been able to avoid visible bleed over from textures in the adjacent cells of the atlas. Here's what it looks like:
The bleed is visible when selecting the enemy frame using the normal Sprite3D animation frame setting to choose a region of a normal ImageTexture. It's also visible if I use an AtlasTexture and turn the Filter Clip flag on, which claims to eliminate edge bleed. I've tried reimporting the atlas image to disable mipmaps and see if it was caused by import compression, to no avail. Is there a setting I'm missing that's causing this problem?
The atlas elements are 64 px square, and are displayed using a custom shader so I can animate them wobbling as they move and get them to receive shadows properly. The shader uses the filter_nearest texture sampler2D flag, and is applied as a material override. I can paste the shader somewhere here if it would help.
Is there a solution other than a transparent border around the perimeter of each atlas cell?
