THREE.JS / FOUNDATIONS 256

Relief without moving the mesh.

EXT_materials_bump adds height-derived normal relief to a glTF PBR material. The loader creates a physical material, keeps the height texture linear, and leaves the vertex positions unchanged.

Initializing -

Preparing the generated glTF bump payload.

Meshes
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Materials
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Textures
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Bump maps
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Material focusloader-created state
type- extension- height map- world position-
Relief controlsapplication-owned overrides

Select a panel to inspect its bump extension state.

Render inspectionvisual + lifecycle

glTF extension -> MeshPhysicalMaterial -> bump relief

Drag to orbit · scroll to dolly · use ?forceWebGL=1 for a WebGL2 comparison.

Next: glTF mesh quantization ->
LAB 256 / GLTF BUMP EXTENSION