Commit current work

Reworked conditions, added uber-shaders, comparison nodes, fixed Discard

src/Nazara/Core/Error.cpp

@@ -88,7 +88,7 @@ namespace Nz
 		#if defined(NAZARA_PLATFORM_WINDOWS)
 		wchar_t* buffer = nullptr;
 
-		FormatMessageW(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_IGNORE_INSERTS,
+		DWORD length = FormatMessageW(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_IGNORE_INSERTS,
 		               nullptr,
 		               code,
 		               0,
@@ -96,6 +96,9 @@ namespace Nz
 		               0,
 		               nullptr);
 
+		if (length == 0)
+			return "<internal error: FormatMessageW failed with " + std::to_string(::GetLastError()) + ">";
+
 		CallOnExit freeOnExit([buffer] { LocalFree(buffer); });
 		return FromWideString(buffer);
 		#elif defined(NAZARA_PLATFORM_POSIX)