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, 9 insertions, 9 deletions

diff --git a/tests/autodiff/material/GlossyMaterialInstance.slang b/tests/autodiff/material/GlossyMaterialInstance.slang
index fbbcc1a26..fb1ce55c0 100644
--- a/tests/autodiff/material/GlossyMaterialInstance.slang
+++ b/tests/autodiff/material/GlossyMaterialInstance.slang
@@ -3,44 +3,44 @@
 __exported import IMaterialInstance;
 __exported import IBSDF;
 
-struct GlossyBSDF : IBSDF
+public struct GlossyBSDF : IBSDF
 {
-    float3 albedo;
+    public float3 albedo;
 
-    float3 getAlbedo()
+    public float3 getAlbedo()
     {
         return albedo;
     }
 
     [ForwardDerivativeOf(getAlbedo)]
     [TreatAsDifferentiable]
-    DifferentialPair<float3> __fwd_d_getAlbedo()
+    public DifferentialPair<float3> __fwd_d_getAlbedo()
     {
         return diffPair(albedo, float3(1.f));
     }
 
     [BackwardDerivativeOf(getAlbedo)]
     [TreatAsDifferentiable]
-    void __bwd_d_getAlbedo(float3 dOut)
+    public void __bwd_d_getAlbedo(float3 dOut)
     {
         [unroll]
         for (int j = 0; j < 3; j++) outputBuffer[j + 3] += dOut[j];
     }
 
     [BackwardDifferentiable]
-    float3 eval(const float3 wiLocal, const float3 woLocal)
+    public float3 eval(const float3 wiLocal, const float3 woLocal)
     {
         float3 a = getAlbedo();
         return a * a;
     }
 };
 
-struct GlossyMaterialInstance : IMaterialInstance
+public struct GlossyMaterialInstance : IMaterialInstance
 {
-    GlossyBSDF bsdf;
+    public GlossyBSDF bsdf;
 
     [BackwardDifferentiable]
-    float3 eval(const float3 wi, const float3 wo)
+    public float3 eval(const float3 wi, const float3 wo)
     {
         return bsdf.eval(wi, wo);
     }