[Makio64]

Related issue: #35436

Description

Less bookkeeping per node in Node.build() and NodeBuilder. The generated WGSL is identical for all 21 test materials.

• hashNodes is a Map and only holds nodes with a custom getHash(). The default hash is the node id, so such a node can only find itself.
• getCacheKey() caches the hash of each property name.
• The per-node data object has a stable shape and is read once in getDataFromNode().
• Node properties are iterated without Object.values(), and the finished build stages are bits instead of an object per node and stage.

WGSLNodeBuilder.build()	dev	PR
MeshBasicNodeMaterial	0.20 ms	0.17 ms	−18%
MeshStandardNodeMaterial, 5 lights	2.46 ms	1.89 ms	−23%
MeshStandardNodeMaterial, 5 lights, shadows	3.74 ms	2.78 ms	−26%
MeshPhysicalNodeMaterial, all features	6.80 ms	5.66 ms	−17%
Custom TSL material	3.10 ms	2.50 ms	−19%
All 21 materials	37.02 ms	29.76 ms	−20%

CPU time in Node 24 on an Apple M3 Max, best of 4 interleaved runs of 16 builds each.

🤖 Generated with Claude Code

[github-actions]

📦 Bundle size

Full ESM build including core, minified and gzipped.

	Before	After	Diff
Core	395.78 103.48	395.78 103.48	+0 B +0 B
WebGL	783.91 195.68	783.91 195.68	+0 B +0 B
WebGPU	1118.92 300.91	1119.14 301.01	+222 B +102 B
WebGPU Nodes	1116.87 300.56	1117.09 300.66	+222 B +101 B

🌳 Bundle size after tree-shaking

Minimal build including a renderer, camera, empty scene, and dependencies.

	Before	After	Diff
WebGL	520.26 125.10	520.26 125.10	+0 B +0 B
WebGPU	794.54 212.89	794.76 212.99	+222 B +91 B
WebGPU Nodes	740.58 199.35	740.80 199.44	+222 B +87 B

[Mugen87]

These are still too many changes at once. And I doubt all of them make sense. Stuff like if ( node.getHash !== Node.prototype.getHash ) { is really hard to read and looks like a hack.

How about just doing the following in NodeBuilder for now?

• Make hashNodes a Map.
• Define the full properties for nodeData to avoid runtime permutation.