ADD: Texture load multithreaded

src/render/rg_graph.cpp

@@ -25,8 +25,20 @@ void RenderGraph::init(EngineContext *ctx)
 
 void RenderGraph::clear()
 {
-	_passes.clear();
-	_resources.reset();
+    _passes.clear();
+    _resources.reset();
+}
+
+void RenderGraph::shutdown()
+{
+    // If a timestamp pool exists, ensure the GPU is not using it and destroy it.
+    if (_timestampPool != VK_NULL_HANDLE && _context && _context->getDevice())
+    {
+        // Be conservative here: make sure the graphics queue is idle before destroying.
+        vkQueueWaitIdle(_context->getDevice()->graphicsQueue());
+        vkDestroyQueryPool(_context->getDevice()->device(), _timestampPool, nullptr);
+        _timestampPool = VK_NULL_HANDLE;
+    }
 }
 
 RGImageHandle RenderGraph::import_image(const RGImportedImageDesc &desc)

src/render/rg_graph.h

@@ -15,8 +15,11 @@ class EngineContext;
 class RenderGraph
 {
 public:
-	void init(EngineContext* ctx);
-	void clear();
+    void init(EngineContext* ctx);
+    void clear();
+    // Destroy any GPU-side state owned by the graph (e.g. query pools).
+    // Call during engine shutdown before destroying the VkDevice.
+    void shutdown();
 
 	// Import externally owned images (swapchain, drawImage, g-buffers)
 	RGImageHandle import_image(const RGImportedImageDesc& desc);