update

implementations/Crafter.Graphics-Window.cpp

@@ -732,16 +732,12 @@ void Window::Render() {
     // widget's OnTextInput / OnKeyDown sees them in the same frame.
     Device::TickKeyRepeats();
 
-    onUpdate.Invoke({startTime, startTime-lastFrameBegin});
-    #ifdef CRAFTER_TIMING
-    totalUpdate = std::chrono::nanoseconds(0);
-    updateTimings.clear();
-    for (const std::pair<const EventListener<FrameTime>*, std::chrono::nanoseconds>& entry : onUpdate.listenerTimes) {
-        updateTimings.push_back(entry);
-        totalUpdate += entry.second;
-    }
-    #endif
-
+    // Bind the descriptor heaps BEFORE the user's update event fires.
+    // Any compute work the update lambda records (e.g. physics dispatches)
+    // needs the heaps bound at execution time; recording order in the cmd
+    // buffer dictates GPU execution order, so the bind must come first.
+    // Pass-side dispatches still run with the same heaps bound — moving
+    // the bind earlier doesn't change anything for them.
     if (descriptorHeap) {
         VkBindHeapInfoEXT resourceHeapInfo = {
             .sType = VK_STRUCTURE_TYPE_BIND_HEAP_INFO_EXT,
@@ -766,6 +762,16 @@ void Window::Render() {
         Device::vkCmdBindSamplerHeapEXT(drawCmdBuffers[currentBuffer], &samplerHeapInfo);
     }
 
+    onUpdate.Invoke({startTime, startTime-lastFrameBegin});
+    #ifdef CRAFTER_TIMING
+    totalUpdate = std::chrono::nanoseconds(0);
+    updateTimings.clear();
+    for (const std::pair<const EventListener<FrameTime>*, std::chrono::nanoseconds>& entry : onUpdate.listenerTimes) {
+        updateTimings.push_back(entry);
+        totalUpdate += entry.second;
+    }
+    #endif
+
     // Note: vkCmdClearColorImage is unavailable here — the swapchain is
     // created with VK_IMAGE_USAGE_STORAGE_BIT only (no TRANSFER_DST_BIT).
     // Passes that need a background should write one explicitly (UIScene