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Give the node its own sky.

A PBR node material can inherit Scene.environment, consume a classic envMap, or own a custom envNode. Build two PMREM maps from typed-array panoramas and compare the ownership boundary without changing the mesh.

Initializing -

Creating a backend-specific PBR material and two filtered environment maps.

backend: -
material: -
scene env: -
active owner: -

Choose the ownersource -> PMREM -> node/material

renderer target ownership contract visible background source palette Scene.environment intensity 1.00 material env intensity 1.00

animate sample objects show environment source cards

Node contractwaiting

material: -
envNode: -
envMap: -
Scene.environment: -
lights: -
intensity: -

MeshStandardNodeMaterial uses EnvironmentNode for PBR image-based lighting.

Source panoramaswaiting

cool: -
warm: -
size: -
type: -
color: -
mapping: -

The two equirectangular DataTextures are synthetic but carry explicit sRGB source metadata.

PMREM outputswaiting

cool target: -
warm target: -
mapping: -
cool size: -
warm size: -
state: -

pmremTexture() consumes the filtered target in the custom NodeMaterial path.

Comparethree owners

The scene sphere inherits cool fill; the node and map spheres explicitly consume warm fill.

Scene.environmentbuilder default

PBR node materials honor Scene.environment when no material-level override exists.

material.envNodecustom node

pmremTexture(warmTarget.texture) overrides the default environment node for one material.

material.envMapclassic property

The classic texture property is still a valid explicit ownership path; WebGL2 uses this fallback.

No environmentdiagnostic baseline

Removing both scene and material ownership makes the direct-light contribution visible.

Conversion and render timingwaiting

cool PMREM ms: -
warm PMREM ms: -
CPU avg: -
CPU p95: -
source bytes: -
texture count: -

Rebuild the sources, choose an owner, then measure post-conversion PBR shading.

DataTexturePMREM CubeUVScene.environmentormaterial.envNodeormaterial.envMap

Scene.environment is the renderer-wide default for PBR node materials. envNode is a per-material node override; it is not a second Scene.environment. In WebGL2, the same explicit ownership lesson uses MeshStandardMaterial.envMap because the official LightProbeGrid and classic material path remain WebGL-specific.

Sources: EnvironmentNode · NodeMaterial · MeshStandardNodeMaterial · PMREMGenerator · official WebGPU environment example · LightProbeGrid · XREstimatedLight