nevermind, its not supposed to work, anyhit is not invoked on opaque

res/shaders/raytracing/AnyHit.slang

@@ -7,6 +7,8 @@ import StaticMeshVertexData;
 [shader("anyhit")]
 void anyhit(inout RayPayload hitValue, in BuiltInTriangleIntersectionAttributes attr)
 {
+    if(RayTCurrent() > hitValue.t)
+        return;
     const float3 barycentricCoords = float3(1.0f - attr.barycentrics.x - attr.barycentrics.y, attr.barycentrics.x, attr.barycentrics.y);
 
     InstanceData inst = pScene.instances[InstanceID()];

res/shaders/raytracing/ClosestHit.slang

@@ -110,6 +110,7 @@ void closestHit(inout RayPayload hitValue, in BuiltInTriangleIntersectionAttribu
 
     hitValue.params = params.getLightingParameter();
     hitValue.materialParams = params.getMaterialParameter();
+    
     LightingParameter lightingParams = hitValue.params;
     lightingParams.viewDir_WS = -WorldRayDirection();
     let brdf = Material.prepare(hitValue.materialParams);
@@ -165,7 +166,7 @@ void closestHit(inout RayPayload hitValue, in BuiltInTriangleIntersectionAttribu
         payload.anyHit = true;
         payload.hit = false;
         payload.rndSeed = hitValue.rndSeed;
-        TraceRay(pRayTracingParams.scene, RAY_FLAG_CULL_BACK_FACING_TRIANGLES, 0xff, 0, 0, 0, rayDesc, payload);
+        TraceRay(pRayTracingParams.scene, RAY_FLAG_CULL_BACK_FACING_TRIANGLES | RAY_FLAG_ACCEPT_FIRST_HIT_AND_END_SEARCH, 0xff, 0, 0, 0, rayDesc, payload);
 
         // we have missed all geometry, so directional light is affecting us
         if(!payload.hit) {
@@ -185,7 +186,7 @@ void closestHit(inout RayPayload hitValue, in BuiltInTriangleIntersectionAttribu
         rayDesc.TMin = eps;
         rayDesc.Origin = x;
         rayDesc.Direction = l;
-        TraceRay(pRayTracingParams.scene, RAY_FLAG_CULL_BACK_FACING_TRIANGLES, 0xff, 0, 0, 0, rayDesc, payload);
+        TraceRay(pRayTracingParams.scene, RAY_FLAG_CULL_BACK_FACING_TRIANGLES | RAY_FLAG_ACCEPT_FIRST_HIT_AND_END_SEARCH, 0xff, 0, 0, 0, rayDesc, payload);
     
         // hitting only after the light
         if(!payload.hit) {

res/shaders/raytracing/RayGen.slang

@@ -103,6 +103,7 @@ void raygen()
     RayPayload payload;
     // initialize accumulated radiance and bxdf
     payload.light=float3(0);
+    payload.t = 10000.0f;
     payload.emissive = 1;
     payload.depth = 1;
     payload.rndSeed = rndSeed + 1;

res/shaders/raytracing/RayTracingData.slang

@@ -18,6 +18,7 @@ struct RayPayload
     LightingParameter params;
     MaterialParameter materialParams;
     float3 light;
+    float t;
     float emissive;
     uint depth;
     bool hit;