Gravity writes in parallel.

Each texel is a debris body. The velocity pass applies pairwise gravity and collision aggregation, storing mass in velocity.w; the position pass integrates survivors, and a Points/ShaderMaterial field turns those textures into an orbiting protoplanet.

compute

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particles

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textures

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mass channel

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simulation

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sample avg / p95

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backend

WebGL2

scope

gravity + merge

Derived from the pinned classic GPGPU protoplanet example. This route uses a deterministic 32×32 field and local controls in place of the official random initialization, GUI/Stats presentation, and exact frame; broad device/compiler/performance coverage, context-loss/leak stress, and whole-example fidelity remain separate.