uv2_vertex and uv2_pars_vertex failing mtoon VRM rendering in Three v151

[antpb]

In Three.js v151 there were changes that removed uv2_vertex and uv2_pars_vertex which cause issues loading VRM files that have the mtoon shader.

Here is the Three.js change: mrdoob/three.js@5c5a5c7#diff-c2bc4656a48180f106fc5f8813c5d6fd1fe51f8af74b7ac5e1939661379d4841

I found that mtoon uses uv2_vertex and uv2_pars_vertex in Line 42 and 17 of the mtoon.vert file.

three-vrm/packages/three-vrm-materials-mtoon/src/shaders/mtoon.vert

Line 42 in e4a2dcc

#include <uv2_vertex>

I attempted to comment them out, but as expected it broke things further. Reporting here as I try to solve the problem. :)

[0b5vr]

oh no. I will fix this in the next version.

Thank you for the report.

[0b5vr]

r151 support is way harder than I thought; there are many breaking changes on shaderchunks.
Expect more time to support r151.

See:

• WebGLRenderer: Add support for multiple uv sets and transforms. mrdoob/three.js#25721
• Refactor PBR shaders mrdoob/three.js#25693

[0b5vr]

@antpb v1.0.10 should fix the shader compilation problem, please try the new version!

https://github.com/pixiv/three-vrm/releases/tag/v1.0.10