Add support for dumping intermediates for debugging.

Calling:

    spSetDumpIntermedites(compileRequest, true);

will set up a mode where Slang tries to dump every intermediate HLSL, GLSL, DXBC, SPIR-V, etc. file it generates. If SPIR-V or DXBC is requested then we also dump assembly of those.

Right now the files are all named as `slang-<counter>.<ext>`, and get dropped in whatever the working directory is, but I'm open to ideas on how to improve that.

Note: this change introduces a new binary interface to `glslang`, so pulling it requires an updated `glslang.dll`.

1 files changed, 7 insertions, 0 deletions

diff --git a/slang.h b/slang.h
index 26a8a406f..84dc9d547 100644
--- a/slang.h
+++ b/slang.h
@@ -170,6 +170,13 @@ extern "C"
         SlangCompileFlags       flags);
 
     /*!
+    @brief Set whether to dump intermediate results (for debugging) or not.
+    */
+    SLANG_API void spSetDumpIntermediates(
+        SlangCompileRequest*    request,
+        int                     enable);
+
+    /*!
     @brief Sets the target for code generation.
     @param ctx The compilation context.
     @param target The code generation target. Possible values are: