Unity Pixel Art Tilemap Issues Gaps Lines Tearing

Unity Pixel Art Tilemap Issues.md

lines between tiles, tilemap gaps:

• Create sprite atlas with padding = 2 https://forum.unity.com/threads/artifacts-in-a-2d-pixel-art-scene.1427049/#post-8959284
• disable antialias
• use pixel snap shader material
• texture importer: point filter
• use unity pixel perfect camera package
• resolution issue? float camera pos
• Changing the Tiles Pixel Per Unit from 32 to 31.99 : https://forum.unity.com/threads/tilemap-has-tearing-between-tiles-even-with-pixel-snap.499154/#post-5447910
• use atlas (since it has padding) https://forum.unity.com/threads/unitys-tilemap-problem-some-gaps-between-tiles.594331/#post-3970438
• whats happening with pixels https://stackoverflow.com/questions/35785291/getting-giggly-effect-when-slowly-moving-a-sprite
• lines between https://forum.unity.com/threads/pixel-red-blue-lines-tilemap.1334996/#post-8435159

Pixel art

• In order to make your pixel perfect camera work properly all your sprites wide and height needs to be even. That thing cost me like 4 days. Without this aspect ratios 1:1 & 3:1 was very jittery. https://forum.unity.com/threads/the-pixel-perfect-advice-ive-never-seen-anywhere.1385490/
• producing pixel perfect frames and smooth movement https://forum.unity.com/threads/smooth-looking-pixel-art-in-motion.1392745/#post-8767468

Some reasons:

• No Pixel Snap Material
• No Manual sprite extrude and extrude edges 1 (sprite default)
• Mesh type Tight
• Sprite Atlas with Filter mode Point and Format RGBA 32 All I had to do was resize the tile by removing -0.0001 pixels both in X and Y. https://forum.unity.com/threads/tile-map-tearing-problems.225777/page-2#post-4633756
• MSAA https://forum.unity.com/threads/diagonal-line-artifact-through-overlapping-sprites.1363042/#post-8596627

Notes

• Set tilemap palette custom size (from automatic), from tilemap asset, the sub asset https://forum.unity.com/threads/change-tileset-from-automatic-grid-size-to-manual-grid-size.958681/#post-6248737

Set collider size different per frame:

• set collider size by script or animate collider size per frame in animator

using small offset fixed here: https://forum.unity.com/threads/tilemap-has-tearing-between-tiles-even-with-pixel-snap.499154/#post-7299658

A simple fix for the tilemap tearing is:

1. Create a new material
2. Set material shader to "Sprites/Default"
3. Check "Pixel snap"
4. Assign the material to the Tilemap Renderer Material slot for each tilemap