Add OpenXR 1.0.22 to thirdparty libraries

Will be compiled and used in the next commit.

Co-authored-by: Rémi Verschelde <rverschelde@gmail.com>

thirdparty/openxr/src/loader/loader_platform.hpp

@@ -0,0 +1,204 @@
+// Copyright (c) 2017-2022, The Khronos Group Inc.
+// Copyright (c) 2017-2019 Valve Corporation
+// Copyright (c) 2017-2019 LunarG, Inc.
+//
+// SPDX-License-Identifier: Apache-2.0 OR MIT
+//
+// Initial Authors: Mark Young <marky@lunarg.com>, Dave Houlton <daveh@lunarg.com>
+//
+
+#pragma once
+
+#include <cassert>
+#include <sstream>
+#include <string>
+
+#include "xr_dependencies.h"
+#include "platform_utils.hpp"
+
+#if defined(__GNUC__) && __GNUC__ >= 4
+#define LOADER_EXPORT __attribute__((visibility("default")))
+#elif defined(__SUNPRO_C) && (__SUNPRO_C >= 0x590)
+#define LOADER_EXPORT __attribute__((visibility("default")))
+#else
+#define LOADER_EXPORT
+#endif
+
+// Environment variables
+#if defined(XR_OS_LINUX) || defined(XR_OS_APPLE) || defined(XR_OS_ANDROID)
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <dlfcn.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <dirent.h>
+
+#ifndef PATH_MAX
+#define PATH_MAX 1024
+#endif
+
+#define PATH_SEPARATOR ':'
+#define DIRECTORY_SYMBOL '/'
+
+// Dynamic Loading of libraries:
+typedef void *LoaderPlatformLibraryHandle;
+static inline LoaderPlatformLibraryHandle LoaderPlatformLibraryOpen(const std::string &path) {
+    // When loading the library, we use RTLD_LAZY so that not all symbols have to be
+    // resolved at this time (which improves performance). Note that if not all symbols
+    // can be resolved, this could cause crashes later.
+    // For experimenting/debugging: Define the LD_BIND_NOW environment variable to force all
+    // symbols to be resolved here.
+    return dlopen(path.c_str(), RTLD_LAZY | RTLD_LOCAL);
+}
+
+static inline const char *LoaderPlatformLibraryOpenError(const std::string &path) {
+    (void)path;
+    return dlerror();
+}
+
+static inline void LoaderPlatformLibraryClose(LoaderPlatformLibraryHandle library) { dlclose(library); }
+
+static inline void *LoaderPlatformLibraryGetProcAddr(LoaderPlatformLibraryHandle library, const std::string &name) {
+    assert(library);
+    assert(!name.empty());
+    return dlsym(library, name.c_str());
+}
+
+static inline const char *LoaderPlatformLibraryGetProcAddrError(const std::string &name) {
+    (void)name;
+    return dlerror();
+}
+
+#elif defined(XR_OS_WINDOWS)
+
+#define PATH_SEPARATOR ';'
+#define DIRECTORY_SYMBOL '\\'
+
+// Workaround for MS VS 2010/2013 missing snprintf and vsnprintf
+#if defined(_MSC_VER) && _MSC_VER < 1900
+#include <stdint.h>
+
+static inline int32_t xr_vsnprintf(char *result_buffer, size_t buffer_size, const char *print_format, va_list varying_list) {
+    int32_t copy_count = -1;
+    if (buffer_size != 0) {
+        copy_count = _vsnprintf_s(result_buffer, buffer_size, _TRUNCATE, print_format, varying_list);
+    }
+    if (copy_count == -1) {
+        copy_count = _vscprintf(print_format, varying_list);
+    }
+    return copy_count;
+}
+
+static inline int32_t xr_snprintf(char *result_buffer, size_t buffer_size, const char *print_format, ...) {
+    va_list varying_list;
+    va_start(varying_list, print_format);
+    int32_t copy_count = xr_vsnprintf(result_buffer, buffer_size, print_format, varying_list);
+    va_end(varying_list);
+    return copy_count;
+}
+
+#define snprintf xr_snprintf
+#define vsnprintf xr_vsnprintf
+
+#endif
+
+static inline std::string DescribeError(uint32_t code, bool prefixErrorCode = true) {
+    std::string str;
+
+    if (prefixErrorCode) {
+        char prefixBuffer[64];
+        snprintf(prefixBuffer, sizeof(prefixBuffer), "0x%llx (%lld): ", (uint64_t)code, (int64_t)code);
+        str = prefixBuffer;
+    }
+
+    // Could use FORMAT_MESSAGE_FROM_HMODULE to specify an error source.
+    WCHAR errorBufferW[1024]{};
+    const DWORD errorBufferWCapacity = sizeof(errorBufferW) / sizeof(errorBufferW[0]);
+    const DWORD length = FormatMessageW(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, nullptr, (DWORD)code,
+                                        MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), errorBufferW, errorBufferWCapacity, nullptr);
+
+    if (length) {  // If errorBufferW contains what we are looking for...
+        str += wide_to_utf8(errorBufferW);
+    } else {
+        str = "(unknown)";
+    }
+
+    return str;
+}
+
+// Dynamic Loading:
+typedef HMODULE LoaderPlatformLibraryHandle;
+static inline LoaderPlatformLibraryHandle LoaderPlatformLibraryOpen(const std::string &path) {
+    const std::wstring pathW = utf8_to_wide(path);
+
+    // Try loading the library the original way first.
+    LoaderPlatformLibraryHandle handle = LoadLibraryW(pathW.c_str());
+
+    if (handle == NULL && GetLastError() == ERROR_MOD_NOT_FOUND) {
+        const DWORD dwAttrib = GetFileAttributesW(pathW.c_str());
+        const bool fileExists = (dwAttrib != INVALID_FILE_ATTRIBUTES && !(dwAttrib & FILE_ATTRIBUTE_DIRECTORY));
+        if (fileExists) {
+            // If that failed, then try loading it with broader search folders.
+            handle = LoadLibraryExW(pathW.c_str(), NULL, LOAD_LIBRARY_SEARCH_DEFAULT_DIRS | LOAD_LIBRARY_SEARCH_DLL_LOAD_DIR);
+        }
+    }
+
+    return handle;
+}
+
+static inline std::string LoaderPlatformLibraryOpenError(const std::string &path) {
+    std::stringstream ss;
+    const DWORD dwLastError = GetLastError();
+    const std::string strError = DescribeError(dwLastError);
+    ss << "Failed to open dynamic library " << path << " with error " << dwLastError << ": " << strError;
+    return ss.str();
+}
+
+static inline void LoaderPlatformLibraryClose(LoaderPlatformLibraryHandle library) { FreeLibrary(library); }
+
+static inline void *LoaderPlatformLibraryGetProcAddr(LoaderPlatformLibraryHandle library, const std::string &name) {
+    assert(library);
+    assert(name.size() > 0);
+    return reinterpret_cast<void *>(GetProcAddress(library, name.c_str()));
+}
+
+static inline std::string LoaderPlatformLibraryGetProcAddrAddrError(const std::string &name) {
+    std::stringstream ss;
+    ss << "Failed to find function " << name << " in dynamic library";
+    return ss.str();
+}
+
+#else  // Not Linux or Windows
+
+#define PATH_SEPARATOR ':'
+#define DIRECTORY_SYMBOL '/'
+
+static inline LoaderPlatformLibraryHandle LoaderPlatformLibraryOpen(const std::string &path) {
+// Stub func
+#error("Unknown platform, undefined dynamic library routines resulting");
+    (void)path;
+}
+
+static inline const char *LoaderPlatformLibraryOpenError(const std::string &path) {
+    // Stub func
+    (void)path;
+}
+
+static inline void LoaderPlatformLibraryClose(LoaderPlatformLibraryHandle library) {
+    // Stub func
+    (void)library;
+}
+
+static inline void *LoaderPlatformLibraryGetProcAddr(LoaderPlatformLibraryHandle library, const std::string &name) {
+    // Stub func
+    void(library);
+    void(name);
+}
+
+static inline const char *LoaderPlatformLibraryGetProcAddrError(const std::string &name) {
+    // Stub func
+    (void)name;
+}
+
+#endif