ADD: Ray tracing shadow with Clipmap shadow blending

src/scene/vk_loader.cpp

@@ -488,6 +488,10 @@ std::optional<std::shared_ptr<LoadedGLTF> > loadGltf(VulkanEngine *engine, std::
         }
 
         newmesh->meshBuffers = engine->_resourceManager->uploadMesh(indices, vertices);
+        if (engine->_rayManager)
+        {
+            engine->_rayManager->getOrBuildBLAS(newmesh);
+        }
     }
     //> load_nodes
     // load all nodes and their meshes

src/scene/vk_scene.cpp

@@ -171,6 +171,15 @@ void SceneManager::update_scene()
         }
     }
 
+    // Publish shadow/RT settings to SceneData
+    if (_context)
+    {
+        const auto &ss = _context->shadowSettings;
+        const uint32_t rtEnabled = (ss.mode != 0) ? 1u : 0u;
+        sceneData.rtOptions = glm::uvec4(rtEnabled, ss.hybridRayCascadesMask, ss.mode, 0u);
+        sceneData.rtParams  = glm::vec4(ss.hybridRayNoLThreshold, 0.0f, 0.0f, 0.0f);
+    }
+
     auto end = std::chrono::system_clock::now();
     auto elapsed = std::chrono::duration_cast<std::chrono::microseconds>(end - start);
     stats.scene_update_time = elapsed.count() / 1000.f;