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Diffstat (limited to 'archived/projt-launcher/launcher/MangoHud.cpp')
| -rw-r--r-- | archived/projt-launcher/launcher/MangoHud.cpp | 213 |
1 files changed, 213 insertions, 0 deletions
diff --git a/archived/projt-launcher/launcher/MangoHud.cpp b/archived/projt-launcher/launcher/MangoHud.cpp new file mode 100644 index 0000000000..add46c9eba --- /dev/null +++ b/archived/projt-launcher/launcher/MangoHud.cpp @@ -0,0 +1,213 @@ +// SPDX-License-Identifier: GPL-3.0-only +// SPDX-FileCopyrightText: 2026 Project Tick +// SPDX-FileContributor: Project Tick Team +/* + * ProjT Launcher - Minecraft Launcher + * Copyright (C) 2026 Project Tick + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, version 3. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * === Upstream License Block (Do Not Modify) ============================== + * + * PrismLauncher - Minecraft Launcher + * Copyright (C) 2022 Jan Drögehoff <sentrycraft123@gmail.com> + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, version 3. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + ======================================================================== */ + +#include <QDebug> +#include <QDir> +#include <QString> +#include <QStringList> +#include <QSysInfo> +#include <QtGlobal> + +#include "FileSystem.h" +#include "Json.h" +#include "MangoHud.h" + +#ifdef __GLIBC__ +#ifndef _GNU_SOURCE +#define _GNU_SOURCE +#define UNDEF_GNU_SOURCE +#endif +#include <dlfcn.h> +#include <linux/limits.h> +#endif + +namespace MangoHud +{ + + QString getLibraryString() + { + /** + * Guess MangoHud install location by searching for vulkan layers in this order: + * + * $VK_LAYER_PATH + * $XDG_DATA_DIRS (/usr/local/share/:/usr/share/) + * $XDG_DATA_HOME (~/.local/share) + * /etc + * $XDG_CONFIG_DIRS (/etc/xdg) + * $XDG_CONFIG_HOME (~/.config) + * + * @returns Absolute path of libMangoHud.so if found and empty QString otherwise. + */ + QStringList vkLayerList; + { + QString home = QDir::homePath(); + + QString vkLayerPath = qEnvironmentVariable("VK_LAYER_PATH"); + if (!vkLayerPath.isEmpty()) + { + vkLayerList << vkLayerPath; + } + + QStringList xdgDataDirs = + qEnvironmentVariable("XDG_DATA_DIRS", "/usr/local/share/:/usr/share/").split(QLatin1String(":")); + for (QString dir : xdgDataDirs) + { + vkLayerList << FS::PathCombine(dir, "vulkan", "implicit_layer.d"); + } + + QString xdgDataHome = qEnvironmentVariable("XDG_DATA_HOME"); + if (xdgDataHome.isEmpty()) + { + xdgDataHome = FS::PathCombine(home, ".local", "share"); + } + vkLayerList << FS::PathCombine(xdgDataHome, "vulkan", "implicit_layer.d"); + + vkLayerList << "/etc"; + + QStringList xdgConfigDirs = qEnvironmentVariable("XDG_CONFIG_DIRS", "/etc/xdg").split(QLatin1String(":")); + for (QString dir : xdgConfigDirs) + { + vkLayerList << FS::PathCombine(dir, "vulkan", "implicit_layer.d"); + } + + QString xdgConfigHome = qEnvironmentVariable("XDG_CONFIG_HOME"); + if (xdgConfigHome.isEmpty()) + { + xdgConfigHome = FS::PathCombine(home, ".config"); + } + vkLayerList << FS::PathCombine(xdgConfigHome, "vulkan", "implicit_layer.d"); + } + + for (const QString& vkLayer : vkLayerList) + { + // prefer to use architecture specific vulkan layers + QString currentArch = QSysInfo::currentCpuArchitecture(); + + if (currentArch == "arm64") + { + currentArch = "aarch64"; + } + + QStringList manifestNames = { QString("MangoHud.%1.json").arg(currentArch), "MangoHud.json" }; + + QString filePath{}; + for (const QString& manifestName : manifestNames) + { + QString tryPath = FS::PathCombine(vkLayer, manifestName); + if (QFile::exists(tryPath)) + { + filePath = tryPath; + break; + } + } + + if (filePath.isEmpty()) + { + continue; + } + try + { + auto conf = Json::requireDocument(filePath, vkLayer); + auto confObject = Json::requireObject(conf, vkLayer); + auto layer = Json::ensureObject(confObject, "layer"); + QString libraryName = Json::ensureString(layer, "library_path"); + + if (libraryName.isEmpty()) + { + continue; + } + if (QFileInfo(libraryName).isAbsolute()) + { + return libraryName; + } + +#ifdef __GLIBC__ + // Check whether mangohud is usable on a glibc based system + QString libraryPath = findLibrary(libraryName); + if (!libraryPath.isEmpty()) + { + return libraryPath; + } +#else + // Without glibc return recorded shared library as-is. + return libraryName; +#endif + } + catch (const Exception& e) + {} + } + + return {}; + } + + QString findLibrary(QString libName) + { +#ifdef __GLIBC__ + const char* library = libName.toLocal8Bit().constData(); + + void* handle = dlopen(library, RTLD_NOW); + if (!handle) + { + qCritical() << "dlopen() failed:" << dlerror(); + return {}; + } + + char path[PATH_MAX]; + if (dlinfo(handle, RTLD_DI_ORIGIN, path) == -1) + { + qCritical() << "dlinfo() failed:" << dlerror(); + dlclose(handle); + return {}; + } + + auto fullPath = FS::PathCombine(QString(path), libName); + + dlclose(handle); + return fullPath; +#else + qWarning() << "MangoHud::findLibrary is not implemented on this platform"; + return {}; +#endif + } +} // namespace MangoHud + +#ifdef UNDEF_GNU_SOURCE +#undef _GNU_SOURCE +#undef UNDEF_GNU_SOURCE +#endif |