Cleanups for test cases:

- Allow a code-generation target of `NONE` in order to suppress ordinary output in test cases where we don't care about the actual output (just pass/fail result)

- Add explicit `location` layout qualifiers to intermediate vertex-to-fragment variables in GLSL test cases for rendering, to work around apparent Intel driver bugs.

1 files changed, 1 insertions, 0 deletions

diff --git a/slang.h b/slang.h
index b6f35f255..87419bf45 100644
--- a/slang.h
+++ b/slang.h
@@ -66,6 +66,7 @@ extern "C"
     enum
     {
         SLANG_TARGET_UNKNOWN,
+        SLANG_TARGET_NONE,
         SLANG_GLSL,
         SLANG_GLSL_VULKAN,
         SLANG_GLSL_VULKAN_ONE_DESC,