Add precompiled module test

[mkeshavaNV]

No description provided.

[skallweitNV]

Can you check if setting slang::CompilerOptionName::UseUpToDateBinaryModule breaks precompiled module loading? If so, we should figure out how Slang needs to change to support this use-case, because we need that flag for the module cache, which should work side-by-side with precompiled modules (without source).

[mkeshavaNV]

Can you check if setting slang::CompilerOptionName::UseUpToDateBinaryModule breaks precompiled module loading? If so, we should figure out how Slang needs to change to support this use-case, because we need that flag for the module cache, which should work side-by-side with precompiled modules (without source).

@skallweitNV - I tried this. With this, it fails with this error. So basically it seems to look for the slang file instead of the precompiled module:

 slangpy.SlangCompileError: Failed to load slang module "test_no_source"
  (0): error 1: cannot open file 'test_no_source.slang'.