Fix small issue around emitInterpolationModifiersImpl when layout is nullptr. (#2583)

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

* Fix output when layout is nullptr in emitInterpolatioModifiersImpl

1 files changed, 10 insertions, 3 deletions

diff --git a/source/slang/slang-emit-glsl.cpp b/source/slang/slang-emit-glsl.cpp
index e3bd771df..b1b92e7e7 100644
--- a/source/slang/slang-emit-glsl.cpp
+++ b/source/slang/slang-emit-glsl.cpp
@@ -2262,8 +2262,14 @@ void GLSLSourceEmitter::emitInterpolationModifiersImpl(IRInst* varInst, IRType*
 {
     bool anyModifiers = false;
 
-    auto stage = layout->getStage();
-    auto isInput = layout->findOffsetAttr(LayoutResourceKind::VaryingInput) != nullptr;
+    Stage stage = Stage::Unknown;
+    bool isInput = false;
+
+    if (layout)
+    {
+        stage = layout->getStage();
+        isInput = layout->findOffsetAttr(LayoutResourceKind::VaryingInput) != nullptr;
+    }
 
     for (auto dd : varInst->getDecorations())
     {
@@ -2314,7 +2320,8 @@ void GLSLSourceEmitter::emitInterpolationModifiersImpl(IRInst* varInst, IRType*
         // output everything with `flat` except for
         // fragment *outputs* (and maybe vertex inputs).
         //
-        if (layout && layout->getStage() == Stage::Fragment
+        if (layout 
+            && layout->getStage() == Stage::Fragment
             && layout->usesResourceKind(LayoutResourceKind::VaryingInput))
         {
             _maybeEmitGLSLFlatModifier(valueType);