Support visibility control and default to `internal`. (#3380)

* Support visibility control and default to `internal`.

* Fix wip.

* Fixes.

* Fix.

* Fix test.

* Add legacy language detection and compatibility for existing code.

* Add doc.

---------

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

1 files changed, 6 insertions, 6 deletions

diff --git a/tests/autodiff/material/DiffuseMaterialInstance.slang b/tests/autodiff/material/DiffuseMaterialInstance.slang
index ca6bfc69a..c6f0e315b 100644
--- a/tests/autodiff/material/DiffuseMaterialInstance.slang
+++ b/tests/autodiff/material/DiffuseMaterialInstance.slang
@@ -3,23 +3,23 @@
 __exported import IMaterialInstance;
 __exported import IBSDF;
 
-struct DiffuseBSDF : IBSDF
+public struct DiffuseBSDF : IBSDF
 {
-    float3 albedo;
+    public float3 albedo;
 
     [TreatAsDifferentiable]
-    float3 eval(const float3 wiLocal, const float3 woLocal)
+    public float3 eval(const float3 wiLocal, const float3 woLocal)
     {
         return albedo;
     }
 };
 
-struct DiffuseMaterialInstance : IMaterialInstance
+public struct DiffuseMaterialInstance : IMaterialInstance
 {
-    DiffuseBSDF bsdf;
+    public DiffuseBSDF bsdf;
 
     [TreatAsDifferentiable]
-    float3 eval(const float3 wi, const float3 wo)
+    public float3 eval(const float3 wi, const float3 wo)
     {
         return bsdf.eval(wi, wo);
     }