Hi there, you know that odd effect when two 3D models overlap on each other on the exact same ordinates? My chest texture is doing that and I don't know how to fix it, it's not even a custom chest model. You can faintly see is the glitch in his photo, but when you move around it becomes more noticeable and annoying. I'm running Minecraft 1.8.7 with MC patcher 5.0.3. Anyone know how to fix this? Thank you in advance.
Z-fighting, as it's commonly called, happens when two polygons are occupying the same space at the same time, but projecting different textures or other rendering values. In this case you have two polygons in the same place at the same time, but with different textures. The sooner you can't change (without modding), but the later you have control of.
To put it in simplest terms, the top row of pixels of the bottom half of the chest needs to be EXACTLY the same as the bottom row of pixels of the top half. (At 16x, mind you. For other people who find this thread, the number of rows doubles with each doubling of the resolution) By having it different, you're causing the two things to fight, unknowingly forcing this to happen.