glsl lang validator

[Kuranes]

Would there be a way to get info log from the compiler ?

Like the standalone glslvalidator does

[AlexAltea]

It's not implemented yet, but sounds like a good idea. I don't have much time at the moment so a pull request would be definitely appreciated.

[Kuranes]

Ok I'll have a go then.

( I'd like to check about implementing -D flag (preprocess glsl only, no compilation) too if possible, would allow to double check real code compiled)

For now, first try at compiliing on ubuntu 16 is a no go ( emcc 1.22.1, clang 3.8 )

npm install 
apt install build-essentials llvm clang emscripten
export EMSCRIPTEN=/usr/share/emscripten
grunt build 

gives me compilation errors `[ 2%] Building CXX object glslang/CMakeFiles/glslang.dir/MachineIndependent/ShaderLang.cpp.o In file included from /sources/experiments/glslang.js/externals/glslang/glslang/MachineIndependent/ShaderLang.cpp:44: In file included from /usr/share/emscripten/system/include/libcxx/iostream:38: In file included from /usr/share/emscripten/system/include/libcxx/ios:216: In file included from /usr/share/emscripten/system/include/libcxx/locale:15: In file included from /usr/share/emscripten/system/include/libcxx/string:439: In file included from /usr/share/emscripten/system/include/libcxx/algorithm:624: /usr/share/emscripten/system/include/libcxx/type_traits:433:76: error: no matching function for call to '__source' : public integral_constant<bool, sizeof(is_function_imp::test<_Tp>(is_function_imp::source<_Tp>())) == 1> ^~~~~~~~ /usr/share/emscripten/system/include/libcxx/type_traits:438:14: note: in instantiation of template class 'std::1::is_function<int () const, false>' requested here : public is_function<_Tp> {}; ^ /usr/share/emscripten/system/include/libcxx/type_traits:443:90: note: in instantiation of template class 'std::1::is_function<int () const>' requested here template <class _Tp, class _Up> struct is_member_function_pointer<_Tp _Up::*> : public is_function<_Tp> {}; ^ /usr/share/emscripten/system/include/libcxx/type_traits:446:14: note: in instantiation of template class 'std::1::__is_member_function_pointer<int (glslang::TInputScanner::*)() const>' requested here : public is_member_function_pointer<typename remove_cv<_Tp>::type> {}; ^ /usr/share/emscripten/system/include/libcxx/type_traits:460:38: note: in instantiation of template class 'std::1::is_member_function_pointer<int (glslang::TInputScanner::*)() const>' requested here !is_member_function_pointer<_Tp>::value> {}; ^ /usr/share/emscripten/system/include/libcxx/type_traits:3093:17: note: in instantiation of template class 'std::1::is_member_object_pointer<int (glslang::TInputScanner::)() const>' requested here is_member_object_pointer<typename remove_reference<_Fp>::type>::value && ^ /usr/share/emscripten/system/include/libcxx/type_traits:3100:1: note: (skipping 7 contexts in backtrace; use -ftemplate-backtrace-limit=0 to see all) invoke(_Fp&& __f, _A0&& a0) ^ /usr/share/emscripten/system/include/libcxx/type_traits:3118:13: note: while substituting deduced template arguments into function template '__invoke' [with _Fp = std::1::bind<int (glslang::TInputScanner::)() const, glslang::TInputScanner > &, _Args = <>] invoke(_VSTD::declval<_Fp>(), _VSTD::declval<_Args>()...) ^ /usr/share/emscripten/system/include/libcxx/type_traits:3126:11: note: in instantiation of template class 'std::1::invokable_imp<std::1::__bind<int (glslang::TInputScanner::)() const, glslang::TInputScanner > &>' requested here __invokable_imp<_Fp, _Args...>::value> ^ /usr/share/emscripten/system/include/libcxx/functional:1427:33: note: in instantiation of template class 'std::1::invokable<std::1::bind<int (glslang::TInputScanner::)() const, glslang::TInputScanner > &>' requested here invokable<_Fp&, _ArgTypes...>::value> ^ /usr/share/emscripten/system/include/libcxx/functional:1454:41: note: in instantiation of default argument for 'callable<std::1::bind<int (glslang::TInputScanner::)() const, glslang::TInputScanner > >' required here callable<_Fp>::value && ^~~~~~~ /sources/experiments/glslang.js/externals/glslang/glslang/MachineIndependent/ShaderLang.cpp:702:13: note: while substituting deduced template arguments into function template 'function' [with _Fp = std::1::__bind<int (glslang::TInputScanner::)() const, glslang::TInputScanner *>] std::bind(&TInputScanner::getLastValidSourceIndex, &input), &outputStream); ^ /usr/share/emscripten/system/include/libcxx/type_traits:424:28: note: candidate template ignored: substitution failure [with _Tp = int () const]: reference to function type 'int () const' cannot have 'const' qualifier template _Tp& __source();

/sources/experiments/glslang.js/externals/glslang/glslang/MachineIndependent/ShaderLang.cpp:701:32: error: no matching constructor for initialization of '(anonymous namespace)::SourceLineSynchronizer'
        SourceLineSynchronizer lineSync(
                               ^
/sources/experiments/glslang.js/externals/glslang/glslang/MachineIndependent/ShaderLang.cpp:625:5: note: candidate constructor not viable: no known conversion from '__bind<int (glslang::TInputScanner::*)()
      const, glslang::TInputScanner *>' to 'const std::function<int ()>' for 1st argument
    SourceLineSynchronizer(const std::function<int()>& lastSourceIndex,
    ^
/sources/experiments/glslang.js/externals/glslang/glslang/MachineIndependent/ShaderLang.cpp:623:7: note: candidate constructor (the implicit move constructor) not viable: requires 1 argument, but 2 were
      provided
class SourceLineSynchronizer {
      ^
/sources/experiments/glslang.js/externals/glslang/glslang/MachineIndependent/ShaderLang.cpp:623:7: note: candidate constructor (the implicit copy constructor) not viable: requires 1 argument, but 2 were
      provided
2 errors generated.
ERROR    root: compiler frontend failed to generate LLVM bitcode, halting
glslang/CMakeFiles/glslang.dir/build.make:309: recipe for target 'glslang/CMakeFiles/glslang.dir/MachineIndependent/ShaderLang.cpp.o' failed
make[2]: *** [glslang/CMakeFiles/glslang.dir/MachineIndependent/ShaderLang.cpp.o] Error 1
`
Looks like maybe a problem with version between llvm/emscripten/glslang
Next time i'll try with latest emscripten "portable" tgz and see where it goes.