three-triplanarmapping

A threeJs shader for object-space triplanar mapping (WIP)

..using CustomShaderMaterial. Thrown together in typescript.

Working version leaning heavily on https://github.com/bgolus/Normal-Mapping-for-a-Triplanar-Shader/blob/master/TriplanarUDN.shader
Supports diffuse, normal, roughness maps for now
clones a PBR THREE.MeshStandardMaterial
createTriplanarMaterial() returns a triplanar material, check lib/triplanarMaterial.ts for parameters
yarn install and yarn dev to view test react-three-fiber scene (Scene.tsx)

ToDo:

World Space shader
Extend to emissive, metalness etc
Remove unnecessary samples when not all axes have separate textures supplied - use textureX on Y, Z
different blend options (only YZ, for example)
Clean up and separate material return function from test scene
list as package?

Lots of info gleaned from

cheers!