Add slangc option to specialize entrypoint + auto glsl mode. (#3531)

* Add slangc option to specialize entrypoint.

* Auto enable glsl mode when input file has glsl extension name.

* Fix test.

---------

Co-authored-by: Yong He <yhe@nvidia.com>

1 files changed, 4 insertions, 1 deletions

diff --git a/source/slang/slang-parser.cpp b/source/slang/slang-parser.cpp
index f5312e645..a086b3c7a 100644
--- a/source/slang/slang-parser.cpp
+++ b/source/slang/slang-parser.cpp
@@ -4650,6 +4650,8 @@ namespace Slang
                 importDecl->scope = currentScope;
                 AddMember(currentScope, importDecl);
             }
+            auto glslModuleModifier = astBuilder->create<GLSLModuleModifier>();
+            addModifier(currentModule, glslModuleModifier);
         }
 
         parseDecls(this, program, MatchedTokenType::File);
@@ -7360,7 +7362,8 @@ namespace Slang
     {
         ParserOptions options = {};
         options.enableEffectAnnotations = translationUnit->compileRequest->getLinkage()->getEnableEffectAnnotations();
-        options.allowGLSLInput = translationUnit->compileRequest->getLinkage()->getAllowGLSLInput();
+        options.allowGLSLInput = translationUnit->compileRequest->getLinkage()->getAllowGLSLInput() ||
+            translationUnit->sourceLanguage == SourceLanguage::GLSL;
         options.isInLanguageServer = translationUnit->compileRequest->getLinkage()->isInLanguageServer();
 
         Parser parser(astBuilder, tokens, sink, outerScope, options);