forked from hertog/godot-module-template
74 lines
2.8 KiB
C++
74 lines
2.8 KiB
C++
// Copyright (c) 2017-2024, The Khronos Group Inc.
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// Copyright (c) 2017-2019 Valve Corporation
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// Copyright (c) 2017-2019 LunarG, Inc.
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//
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// SPDX-License-Identifier: Apache-2.0 OR MIT
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//
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// Initial Author: Mark Young <marky@lunarg.com>
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//
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#pragma once
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#include "loader_platform.hpp"
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#include <openxr/openxr.h>
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#include <string>
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#include <vector>
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#include <unordered_map>
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#include <mutex>
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#include <memory>
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namespace Json {
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class Value;
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}
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class RuntimeManifestFile;
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struct XrGeneratedDispatchTableCore;
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class RuntimeInterface {
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public:
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virtual ~RuntimeInterface();
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// Helper functions for loading and unloading the runtime (but only when necessary)
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static XrResult LoadRuntime(const std::string& openxr_command);
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static void UnloadRuntime(const std::string& openxr_command);
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static RuntimeInterface& GetRuntime() { return *(GetInstance().get()); }
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static XrResult GetInstanceProcAddr(XrInstance instance, const char* name, PFN_xrVoidFunction* function);
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// Get the direct dispatch table to this runtime, without API layers or loader terminators.
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static const XrGeneratedDispatchTableCore* GetDispatchTable(XrInstance instance);
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static const XrGeneratedDispatchTableCore* GetDebugUtilsMessengerDispatchTable(XrDebugUtilsMessengerEXT messenger);
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void GetInstanceExtensionProperties(std::vector<XrExtensionProperties>& extension_properties);
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bool SupportsExtension(const std::string& extension_name);
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XrResult CreateInstance(const XrInstanceCreateInfo* info, XrInstance* instance);
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XrResult DestroyInstance(XrInstance instance);
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bool TrackDebugMessenger(XrInstance instance, XrDebugUtilsMessengerEXT messenger);
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void ForgetDebugMessenger(XrDebugUtilsMessengerEXT messenger);
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// No default construction
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RuntimeInterface() = delete;
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// Non-copyable
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RuntimeInterface(const RuntimeInterface&) = delete;
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RuntimeInterface& operator=(const RuntimeInterface&) = delete;
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private:
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RuntimeInterface(LoaderPlatformLibraryHandle runtime_library, PFN_xrGetInstanceProcAddr get_instance_proc_addr);
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void SetSupportedExtensions(std::vector<std::string>& supported_extensions);
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static XrResult TryLoadingSingleRuntime(const std::string& openxr_command, std::unique_ptr<RuntimeManifestFile>& manifest_file);
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static std::unique_ptr<RuntimeInterface>& GetInstance() {
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static std::unique_ptr<RuntimeInterface> instance;
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return instance;
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}
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LoaderPlatformLibraryHandle _runtime_library;
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PFN_xrGetInstanceProcAddr _get_instance_proc_addr;
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std::unordered_map<XrInstance, std::unique_ptr<XrGeneratedDispatchTableCore>> _dispatch_table_map;
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std::mutex _dispatch_table_mutex;
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std::unordered_map<XrDebugUtilsMessengerEXT, XrInstance> _messenger_to_instance_map;
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std::mutex _messenger_to_instance_mutex;
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std::vector<std::string> _supported_extensions;
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};
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