feat(bindless): Expose Vulkan instance & device

lsfg-vk-backend/include/lsfg-vk/lsfgvk.hpp

@@ -7,6 +7,10 @@
 #include <memory>
 #include <string>
 
+#ifdef LSFGVK_PRIV
+#include <vulkan/vulkan_core.h>
+#endif // LSFGVK_PRIV
+
 namespace lsfgvk {
 
     /// Forward declaration of implementation classes
@@ -40,6 +44,16 @@ namespace lsfgvk {
             bool allowFP16
         );
 
+#ifdef LSFGVK_PRIV
+        /// Get the underlying Vulkan instance handle
+        /// @return Vulkan instance
+        [[nodiscard]] VkInstance _instance() const;
+
+        /// Get the underlying Vulkan device handle
+        /// @return Vulkan device
+        [[nodiscard]] VkDevice _device() const;
+#endif // LSFGVK_PRIV
+
         // Non-copyable, non-movable
         Instance(const Instance&) = delete;
         Instance& operator=(const Instance&) = delete;

lsfg-vk-backend/src/lsfgvk.cpp

@@ -1,6 +1,5 @@
 /* SPDX-License-Identifier: GPL-3.0-or-later */
 
-#include "lsfg-vk/lsfgvk.hpp"
 #include "lsfgvk.hpp"
 #include "modules/library.hpp"
 #include "modules/pipeline.hpp"
@@ -228,4 +227,12 @@ Context::~Context() {
     }
 }
 
+VkInstance Instance::_instance() const {
+    return this->m_priv->vk.instance.get();
+}
+
+VkDevice Instance::_device() const {
+    return *this->m_priv->vk.device;
+}
+
 Instance::~Instance() = default;

lsfg-vk-backend/src/lsfgvk.hpp

@@ -2,6 +2,9 @@
 
 #pragma once
 
+#define LSFGVK_PRIV
+#include "lsfg-vk/lsfgvk.hpp" // IWYU pragma: export
+
 #include "modules/pipeline.hpp"
 #include "modules/library.hpp"
 #include "utility/vkhelper.hpp"