3 files changed, 29 insertions, 0 deletions
diff --git a/source/slang/slang-ir-glsl-legalize.cpp b/source/slang/slang-ir-glsl-legalize.cpp
index 5a14fe1aa..0a61d792d 100644
--- a/source/slang/slang-ir-glsl-legalize.cpp
+++ b/source/slang/slang-ir-glsl-legalize.cpp
@@ -575,6 +575,17 @@ GLSLSystemValueInfo* getGLSLSystemValueInfo(
 //            globalVarExpr = createGLSLBuiltinRef("gl_ViewportMaskPerViewNV",
 //                getUnsizedArrayType(getIntType()));
     }
+    else if (semanticName == "sv_barycentrics")
+    {
+        context->requireGLSLVersion(ProfileVersion::GLSL_450);
+        context->requireGLSLExtension(UnownedStringSlice::fromLiteral("GL_NV_fragment_shader_barycentric"));
+
+        name = "gl_BaryCoordNV";
+
+        // TODO: There is also the `gl_BaryCoordNoPerspNV` builtin, which
+        // we ought to use if the `noperspective` modifier has been
+        // applied to this varying input.
+    }
 
     if( name )
     {
diff --git a/tests/cross-compile/barycentrics.slang b/tests/cross-compile/barycentrics.slang
new file mode 100644
index 000000000..1f2c27572
--- /dev/null
+++ b/tests/cross-compile/barycentrics.slang
@@ -0,0 +1,6 @@
+//TEST:CROSS_COMPILE:-target spirv-assembly -entry main -stage fragment
+
+float4 main(float3 bary : SV_Barycentrics) : SV_Target
+{
+    return float4(bary, 0);
+}
diff --git a/tests/cross-compile/barycentrics.slang.glsl b/tests/cross-compile/barycentrics.slang.glsl
new file mode 100644
index 000000000..ca37a14e8
--- /dev/null
+++ b/tests/cross-compile/barycentrics.slang.glsl
@@ -0,0 +1,12 @@
+#version 450
+
+#extension GL_NV_fragment_shader_barycentric : enable
+
+layout(location = 0)
+out vec4 _S1;
+
+void main()
+{
+    _S1 = vec4(gl_BaryCoordNV, float(0));
+    return;
+}