[Purdze]

Type of change

• Bug fix
• New feature
• Breaking change
• Refactor / code cleanup
• Performance improvement
• Chore / tooling
• Documentation

Summary

finishes the glowing outline from #793.

glowing items:

• dropped items with the glowing flag get an outline through an OUTLINE_CULL item pipeline; the colour rides in the item instance data and the entity outline fragment shader is reused
• item entities keep their uuid, whose string is a non-player's scoreboard name, so a team colours the outline
• the pickup animation stays unoutlined (ItemPickupParticle clears it)

invisibility:

• whether an invisible mob shows follows Entity.isInvisibleTo: a spectator sees it, a teammate sees it when the team sees friendly invisibles (team options bit 2, now read from the team packet), anyone else doesn't
• the body follows LivingEntityRenderer.getRenderType: skipped when the viewer can't see it, outline only if it glows, and 0x26 alpha through a new entityTranslucentCull pipeline when it can
• layers follow their own rule: most hide (RenderLayer.coloredCutoutModelCopyLayerRender), sheep wool and the slime shell keep only their outline when glowing, eyes, the creeper swirl and armour always draw
• the local player follows the same rules in third person

outline blur:

• the vertical blur steps (0, -1): the reference's rows run bottom-up and ours top-down, and the blur's taps aren't symmetric, so the band sat under a pixel off

not here: no in-game script covers the team see-friendly-invisibles case (unit tests only).

Reference

ItemFeatureRenderer, SubmitNodeCollection.submitItem, RenderType.outline, RenderTypes, RenderPipelines, ItemPickupParticle, LivingEntityRenderer (submit, getRenderType), EntityRenderer, Entity.isInvisibleTo, PlayerTeam (packOptions, unpackOptions), the layers under renderer/entity/layers (RenderLayer, SheepWoolLayer, SlimeOuterLayer, VillagerProfessionLayer, HorseMarkingLayer, WolfCollarLayer, IronGolemCrackinessLayer, EyesLayer, EnergySwirlLayer) and post/entity_outline_box_blur.fsh in reference/26.3.

Testing

• unit tests: body and layer routing, team see-friendly-invisibles, scoreboard names, the item instance layout
• client tests, clippy with and without the harness feature, fmt
• entities/glowing extended: a glowing dropped item is outlined, an invisible glowing pig and sheep show only outlines, an invisible plain pig shows nothing, and a spectator sees all three faded with the sheep's wool hidden
• native full suite 39/39