iOS loads a custom filament error

[guoaobao]

iOS loads a custom filament error

[bejado]

Compiler encountered an internal error

Haven't seen that one before. What device / iOS version are you using?

[guoaobao]

iphone 7 ,system: ios 11.4

[bejado]

Unfortunately that error message is coming from Metal and it doesn't provide any actionable information. Are you able to share your materials here?

[guoaobao]

material.roughness = texture(materialParams_roughnessTexture,uv).g;
material.metallic = texture(materialParams_metallicTexture,uv).b;

.mat file will report an error with this statement

[bejado]

What's the full material?