Lots of fixes.

neo/engine/opengl/gl_d3d12raylight.cpp

@@ -2738,7 +2738,7 @@ float TraceShadow(float3 origin, float3 dir, float maxT)
 
     TraceRay(
         gSceneBVH,
-        RAY_FLAG_ACCEPT_FIRST_HIT_AND_END_SEARCH | RAY_FLAG_CULL_FRONT_FACING_TRIANGLES,
+        RAY_FLAG_ACCEPT_FIRST_HIT_AND_END_SEARCH,
         0xFF,
         0,
         0,
@@ -2765,7 +2765,7 @@ bool TraceBounce(float3 origin, float3 dir, float maxT, out float hitT, out uint
 
     TraceRay(
         gSceneBVH,
-        RAY_FLAG_NONE,
+        RAY_FLAG_ACCEPT_FIRST_HIT_AND_END_SEARCH,
         0xFF,
         1,
         0,
@@ -4996,6 +4996,8 @@ void RayGen()
         finalColor += baseAlbedo * reactiveFinalGather;
     }
 
+	finalColor *= clamp(ao + 0.6, 0.0, 1.0);
+
     // Volumetric light scattering is radiance in the camera ray, not surface
     // reflectance, so add it after surface albedo/specular composition.  Because
     // it is written into the same path-trace target, the internal a-trous pass