Expected Behavior

When viewing primed TNT, the white flashing overlay should blend with the TNT texture (see fig. 1). This works correctly in vanilla Minecraft, 1.16.x/stable (specifically 885222a), and the oneshot (GL 2.0) renderer on 1.16.x/dev (specifically f577eb2).

Actual Behavior

When viewing primed TNT, the white flashing overlay experiences z-fighting with the TNT texture (see fig. 2). This occurs using either the oneshot (GL 3.3) or multidraw (GL 4.3) renderer on 1.16.x/dev (f577eb2).

Reproduction Steps

1. Open a Minecraft world using 1.16.x/dev (f577eb2).
2. Enter /summon minecraft:tnt ~ ~ ~ {Fuse: 32767} in the chat.
3. The white flashing overlay of the primed TNT experiences z-fighting with the TNT texture.

Additional Notes

• Built and run using OpenJDK 14.0.2.
• Tested on Fabric Loader 0.8.8+build.202.
• Started occurring on commit 620f5a3, which made changes to the oneshot (3.3) and multidraw (4.3) renderers.
• Does not apply to creepers.

Attachments

Fig. 1. The primed TNT entity's white flashing overlay blends with the TNT texture.

Fig. 2. The primed TNT entity's white flashing overlay experiences z-fighting with the TNT texture.

System Information

• Java Version: OpenJDK 14.0.2
• CPU: AMD Ryzen 7 3700x
• GPU: Nvidia GeForce RTX 2080 SUPER
• OS: Pop!_OS 20.04 LTS

Closing as 1.16.x/next does not have this issue.

Fixed by a9a783f.

I closed this issue in error. This still occurs in 1.16.x/dev right now.