Setting downstream compiler (#1144)

* WIP setting downstream compiler.

* Setting default downstream compiler for a source type.

1 files changed, 20 insertions, 0 deletions

diff --git a/slang.h b/slang.h
index 233b418c3..c4ee39f6d 100644
--- a/slang.h
+++ b/slang.h
@@ -615,6 +615,7 @@ extern "C"
         SLANG_SOURCE_LANGUAGE_GLSL,
         SLANG_SOURCE_LANGUAGE_C,
         SLANG_SOURCE_LANGUAGE_CPP,
+        SLANG_SOURCE_LANGUAGE_COUNT_OF,
     };
 
     typedef unsigned int SlangProfileID;
@@ -2836,6 +2837,25 @@ namespace slang
             @return The build tag string
             */
         virtual SLANG_NO_THROW const char* SLANG_MCALL getBuildTagString() = 0;
+
+            /* For a given source language set the default compiler.
+            If a default cannot be chosen (for example the target cannot be achieved by the default),
+            the default will not be used. 
+
+            @param sourceLanguage the source language 
+            @param defaultCompiler the default compiler for that language
+            @return 
+            */
+        virtual SLANG_NO_THROW SlangResult SLANG_MCALL setDefaultDownstreamCompiler(
+            SlangSourceLanguage sourceLanguage,
+            SlangPassThrough defaultCompiler) = 0;
+
+            /* For a source type get the default compiler 
+
+            @param sourceLanguage the source language 
+            @return The downstream compiler for that source language */
+        virtual SlangPassThrough SLANG_MCALL getDefaultDownstreamCompiler(
+            SlangSourceLanguage sourceLanguage) = 0;
     };
 
     #define SLANG_UUID_IGlobalSession { 0xc140b5fd, 0xc78, 0x452e, { 0xba, 0x7c, 0x1a, 0x1e, 0x70, 0xc7, 0xf7, 0x1c } };