Add utility functions to wrap up use of VK_EXT_debug_marker

* vkDebug::DebugMarkerRegion adds automatically scoped region markers
* vkDebug::insertDebugMarker() inserts a label in a command buffer
* vkDebug::SetObjectName() names any vulkan object with a friendly name

base/vulkandebug.h

@@ -44,4 +44,52 @@ namespace vkDebug
 		VkDebugReportCallbackEXT callBack);
 	// Clear debug callback
 	void freeDebugCallback(VkInstance instance);
+
+	// Set up the debug marker function pointers
+	void setupDebugMarkers(VkDevice device);
+
+	// insert a debug label into the command buffer, with or
+	// without a color
+	void insertDebugMarker(
+		VkCommandBuffer cmdbuffer,
+		const char* pMarkerName,
+		float color[4]);
+	void insertDebugMarker(
+		VkCommandBuffer cmdbuffer,
+		const char* pMarkerName);
+
+	// helper class for pushing and popping a debug region
+	// around some section of code.
+	struct DebugMarkerRegion 
+	{
+		DebugMarkerRegion(VkCommandBuffer cmdbuffer,
+			const char* pMarkerName,
+			float color[4]);
+		DebugMarkerRegion(VkCommandBuffer cmdbuffer,
+			const char* pMarkerName);
+		~DebugMarkerRegion();
+
+		VkCommandBuffer cmd;
+	};
+
+	// associate a friendly name with an object
+	void SetObjectName(
+		VkDevice device,
+		VkDebugReportObjectTypeEXT objectType,
+		uint64_t object,
+		const char* pObjectName);
+
+	// specialised in vulkandebug.cpp for each object type
+	template<typename VulkanType>
+	VkDebugReportObjectTypeEXT GetObjectTypeEnum(VulkanType object);
+
+	// templated helper function for SetObjectName
+	template<typename VulkanType>
+	void SetObjectName(
+		VkDevice device,
+		VulkanType object,
+		const char* pObjectName)
+	{
+		SetObjectName(device, GetObjectTypeEnum(object), (uint64_t)object, pObjectName);
+	}
 }