Fix `-capability` arg in SPIRV debug command line output. (#6114)

1 files changed, 13 insertions, 3 deletions

diff --git a/source/slang/slang-compiler-options.cpp b/source/slang/slang-compiler-options.cpp
index 9b7091756..8a27f6fce 100644
--- a/source/slang/slang-compiler-options.cpp
+++ b/source/slang/slang-compiler-options.cpp
@@ -54,11 +54,21 @@ void CompilerOptionSet::writeCommandLineArgs(Session* globalSession, StringBuild
         switch (option.key)
         {
         case CompilerOptionName::Capability:
-            for (auto v : option.value)
             {
-                sb << " " << optionInfo.names << " " << v.stringValue;
+                StringBuilder subBuilder;
+                for (auto v : option.value)
+                {
+                    if (subBuilder.getLength() != 0)
+                        subBuilder << "+";
+                    if (v.kind == CompilerOptionValueKind::Int)
+                        subBuilder << capabilityNameToString((CapabilityName)v.intValue);
+                    else
+                        subBuilder << v.stringValue;
+                }
+                if (subBuilder.getLength())
+                    sb << " " << optionInfo.names << " " << subBuilder.produceString();
+                break;
             }
-            break;
         case CompilerOptionName::Include:
             for (auto v : option.value)
             {