Class MeshPickingMaterial

Update the camera-dependent uniforms.

_resolution / _isOrtho are accepted and IGNORED — a mesh has no screen-space footprint to size, and the near fade's ortho test reads three's isOrthographic. Only nearCull is consumed, and it must be kept identical to the visual material's or pick coverage would stop matching visible coverage near the camera. Mirrors MeshMaterial.updateCameraParams.

Install the real base-colour texture once the data has arrived.

A plain uniform write here, unlike the TSL twin: the sampler is declared by the constructor's define, so only the bound image changes and no recompile is needed. Present under the same NAME as the TSL method so applyMeshTexture has one call site rather than a backend branch.

A no-op when the node has no texture — the uniform only exists in that variant.

Apply the blending mode's two pick-pass consequences (§6.5).

Takes the whole mode rather than a pair of booleans on purpose — see ./pick-mode.ts for why the pair must not be settable independently.

Match the visual material's face culling.

Load-bearing rather than cosmetic: side is a property of the current displayDims epoch (an undecidable frame forces DoubleSide, an odd-parity reflection stays single-sided — see applyMeshSide), so it changes at runtime. If the pick pass kept DoubleSide while the visual culls back faces, the interior faces of a sliced closed isosurface would rasterize into the pick buffer at true surface depth: pickable where nothing is drawn, AND occluding picks of the nodes actually visible through the opening.

Guarded on change — a side write is a program-invalidating event on the GLSL backend and a pipeline rebuild on WebGPU, so it must not fire per frame.

Rebind the node opacity — the second half of the coverage term.

Rebind the cutout threshold.

Clone this picking material. The inherited Material.clone() calls the constructor with no config (so config.nodeId would be undefined), so — mirroring the sibling pick wrappers — construct with the same nodeId and copy the runtime-tuned values across explicitly.