Add struct version to DownstreamCompiler::CompileOptions interface (#2692)

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

* Add versioning to CompileOptions for DownstreamCompiler so we can add new options without breaking binary interface.

* Use builtin offset of directly.

1 files changed, 8 insertions, 2 deletions

diff --git a/source/compiler-core/slang-glslang-compiler.cpp b/source/compiler-core/slang-glslang-compiler.cpp
index 0673540dc..17abc469b 100644
--- a/source/compiler-core/slang-glslang-compiler.cpp
+++ b/source/compiler-core/slang-glslang-compiler.cpp
@@ -138,10 +138,16 @@ static SlangResult _parseDiagnosticLine(SliceAllocator& allocator, const Unowned
     return SLANG_OK;
 }
 
+SlangResult GlslangDownstreamCompiler::compile(const CompileOptions& inOptions, IArtifact** outArtifact)
+{
+    if (!isVersionCompatible(inOptions))
+    {
+        // Not possible to compile with this version of the interface.
+        return SLANG_E_NOT_IMPLEMENTED;
+    }
 
+    CompileOptions options = getCompatibleVersion(&inOptions);
 
-SlangResult GlslangDownstreamCompiler::compile(const CompileOptions& options, IArtifact** outArtifact)
-{
     // This compiler can only handle a single artifact
     if (options.sourceArtifacts.count != 1)
     {