Refactor prelude emit (#2236)

* #include an absolute path didn't work - because paths were taken to always be relative.

* Refactor how prelude output works in emit.

* Small improvement to emit output.

* Move around comment on target specific language directives based on review.

Co-authored-by: Theresa Foley <10618364+tangent-vector@users.noreply.github.com>

1 files changed, 5 insertions, 20 deletions

diff --git a/source/slang/slang-emit-c-like.cpp b/source/slang/slang-emit-c-like.cpp
index a6edc0a1f..895421783 100644
--- a/source/slang/slang-emit-c-like.cpp
+++ b/source/slang/slang-emit-c-like.cpp
@@ -106,6 +106,11 @@ SlangResult CLikeSourceEmitter::init()
     return SLANG_OK;
 }
 
+void CLikeSourceEmitter::emitFrontMatterImpl(TargetRequest* targetReq)
+{
+    SLANG_UNUSED(targetReq);
+}
+
 //
 // Types
 //
@@ -534,26 +539,6 @@ UInt CLikeSourceEmitter::getBindingSpace(EmitVarChain* chain, LayoutResourceKind
     return space;
 }
 
-void CLikeSourceEmitter::emitLayoutDirectives(TargetRequest* targetReq)
-{
-    // We are going to emit the target-language-specific directives
-    // needed to get the default matrix layout to match what was requested
-    // for the given target.
-    //
-    // Note: we do not rely on the defaults for the target language,
-    // because a user could take the HLSL/GLSL generated by Slang and pass
-    // it to another compiler with non-default options specified on
-    // the command line, leading to all kinds of trouble.
-    //
-    // TODO: We need an approach to "global" layout directives that will work
-    // in the presence of multiple modules. If modules A and B were each
-    // compiled with different assumptions about how layout is performed,
-    // then types/variables defined in those modules should be emitted in
-    // a way that is consistent with that layout...
-
-    emitLayoutDirectivesImpl(targetReq);
-}
-
 UInt CLikeSourceEmitter::allocateUniqueID()
 {
     return m_uniqueIDCounter++;