Path simplification/hash mode, plus bug fixes (#788)

* * Fix memory bug around expanding va_args - needed buffer to have space for terminating 0
* Fix problem with FileWriter defaults being globals, as memory they allocate, will only be freed after return from main - work around by making StdWriters RefObject derived, and kept in scope such the writers are destroyed before checks for leaks is found
* Added SimplifyPathAndHash mode for CacheFileSystem - will simplify the path and see if simplified path is in cache before reading file (limiting amout of underlying file requests)

* * Added calcReplaceChar
* Renamed DefaultFileSystem to OSFileSystem
* Made OSFileSystem convert windows \ to / on linux

* Simplified logic for caching in CacheFileSystem.

* Added pragma-once-c to add extra test, but also so there is an 'include' directory in preprocessor tests.

* Small fixes in pragma once test.

* Simplified cache handling path, so that paths/simplified paths area always added.

* Improve naming of methods for different caches.

1 files changed, 5 insertions, 1 deletions

diff --git a/tools/render-test/render-test-main.cpp b/tools/render-test/render-test-main.cpp
index 7cf303631..7dde38ae6 100644
--- a/tools/render-test/render-test-main.cpp
+++ b/tools/render-test/render-test-main.cpp
@@ -670,8 +670,12 @@ SLANG_TEST_TOOL_API SlangResult innerMain(Slang::StdWriters* stdWriters, SlangSe
 
 int main(int argc, char**  argv)
 {
+    using namespace Slang;
     SlangSession* session = spCreateSession(nullptr);
-    SlangResult res = innerMain(Slang::StdWriters::initDefault(), session, argc, argv);
+
+    auto stdWriters = StdWriters::initDefaultSingleton();
+    
+    SlangResult res = innerMain(stdWriters, session, argc, argv);
     spDestroySession(session);
 
 	return SLANG_FAILED(res) ? 1 : 0;