Refactor Vulkan physical device property queries to use templated getProperties2/getFeatures2

Replace manual pNext chaining with type-safe templated Vulkan-Hpp methods for querying PhysicalDeviceIDProperties and PhysicalDevicePresentBarrierFeaturesNV. Update code examples in hardware alignment, CAVE architecture, and renderer_core.cpp to use getProperties2<>/getFeatures2<> with compile-time type specification and .get<>() accessor pattern.

Author: gpx1000

attachments/openxr_engine/renderer_core.cpp

@@ -715,10 +715,8 @@ bool Renderer::pickPhysicalDevice() {
 
       if (xrMode) {
         // Match the LUID provided by OpenXR
-        vk::PhysicalDeviceIDProperties idProps;
-        vk::PhysicalDeviceProperties2 props2;
-        props2.pNext = &idProps;
-        _device.getProperties2(&props2);
+        auto props2 = _device.getProperties2<vk::PhysicalDeviceProperties2, vk::PhysicalDeviceIDProperties>();
+        const auto& idProps = props2.get<vk::PhysicalDeviceIDProperties>();
 
         const uint8_t* requiredLuid = xrContext.getRequiredLUID();
         if (requiredLuid && std::memcmp(idProps.deviceLUID, requiredLuid, VK_LUID_SIZE) != 0) {

en/OpenXR_Vulkan_Spatial_Computing/02_OpenXR_Vulkan_Handshake/03_hardware_alignment_luid.adoc

@@ -40,10 +40,8 @@ To find the LUID of a Vulkan physical device, we query the `VkPhysicalDeviceIDPr
 ----
 // Iterating through physical devices to find a match
 for (const auto& physicalDevice : instance.enumeratePhysicalDevices()) {
-    vk::PhysicalDeviceIDProperties idProps;
-    vk::PhysicalDeviceProperties2 props2;
-    props2.pNext = &idProps;
-    physicalDevice.getProperties2(&props2);
+    auto props2 = physicalDevice.getProperties2<vk::PhysicalDeviceProperties2, vk::PhysicalDeviceIDProperties>();
+    const auto& idProps = props2.get<vk::PhysicalDeviceIDProperties>();
 
     if (idProps.deviceLUIDValid) {
         // Compare the 8-byte LUID against the target from OpenXR

en/OpenXR_Vulkan_Spatial_Computing/02_OpenXR_Vulkan_Handshake/05_incorporating_into_the_engine.adoc

@@ -134,10 +134,8 @@ bool Renderer::pickPhysicalDevice() {
     for (auto& _device : devices) {
         if (xrMode) {
             // Match the LUID provided by OpenXR
-            vk::PhysicalDeviceIDProperties idProps;
-            vk::PhysicalDeviceProperties2 props2;
-            props2.pNext = &idProps;
-            _device.getProperties2(&props2);
+            auto props2 = _device.getProperties2<vk::PhysicalDeviceProperties2, vk::PhysicalDeviceIDProperties>();
+            const auto& idProps = props2.get<vk::PhysicalDeviceIDProperties>();
 
             const uint8_t* requiredLuid = xrContext.getRequiredLUID();
             if (requiredLuid && std::memcmp(idProps.deviceLUID, requiredLuid, VK_LUID_SIZE) != 0) {

en/OpenXR_Vulkan_Spatial_Computing/12_CAVE_Architecture/03_hardware_sync.adoc

@@ -25,9 +25,8 @@ We use the **VK_NV_present_barrier** extension to join these hardware groups.
 [source,cpp]
 ----
 // Checking for Present Barrier support and joining a group
-vk::PhysicalDevicePresentBarrierFeaturesNV barrierFeatures{};
-vk::PhysicalDeviceFeatures2 features2{ &barrierFeatures };
-physicalDevice.getFeatures2(&features2);
+auto features2 = physicalDevice.getFeatures2<vk::PhysicalDeviceFeatures2, vk::PhysicalDevicePresentBarrierFeaturesNV>();
+const auto& barrierFeatures = features2.get<vk::PhysicalDevicePresentBarrierFeaturesNV>();
 
 if (barrierFeatures.presentBarrier) {
     // When creating the swapchain, we join Barrier 1