What could be the part I missing when JitShader runs fine but Ubershader gets no effect?

[PsycoTodd]

Hello
So I am working on support for KHR_material_specular in filament and seems working when I test in gltf_model_viewer with jit mode. Then If I provide the tool with -u to enable ubershader, The appearance of the model looks different.

I notice the diffuse term calculation in jitshader and ubershader seems to be the issue. I am curious what would leads to different code path between ubershader and jitshader?

Since ubershader is compiled and compressed, is there a trick I can take a look of the final lit shader source before it gets into the libshades.a?

Thanks for your help.

[PsycoTodd]

First reason: in the ubershader's xxx.mat.in, do not use refractionMode and refractionType or the shader code changes to a different one than the normal lit one, at least the code is not in shading_model_standard.fs

[PsycoTodd]

Bug found, my new material specular.mat.in forget to parse metallic roughness map, so get default value. Parsing that part makes the jit and uber aligned.