Clear Coat Car Paint

August 21, 2026 · View on GitHub

Tags

extension, testing

Extensions Required

  • KHR_texture_transform
  • KHR_materials_clearcoat

Extensions Used

  • KHR_texture_transform
  • KHR_materials_clearcoat

Summary

This model is a sphere using the glTF ClearCoat extension overtop a car paint base material.

Operations

Screenshot

screenshot

Screenshot from the glTF Sample Viewer with the Wide Street environment light.

Description

This model is a sphere using the glTF extension KHR_materials_clearcoat overtop a car paint base material.

The base material is meant to mimic the scattering from micro flakes such as used in some car paints.

The model uses a single bitmap for the normal bump texture with a random per-pixel noise pattern, and the glTF extension KHR_texture_transform to increase bump tiling.

bump texture

The normal bump texture, enlarged 200% to show detail.

Roughness was increased to 0.4 to scatter the reflected light and to provide a contrast with the clear coat layer which uses zero Roughness. Metalness was set arbitrarily to a partial value of 0.3 to increase the specularity of the base material.

© 2023, Public. Creative Commons Zero v1.0 Universal

  • Eric Chadwick for Everything