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// SPDX-License-Identifier: GPL-3.0-only
/*
* 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, see <https://www.gnu.org/licenses/>.
*/
#include <QStringList>
#include <QDir>
#include <QString>
#include <QtGlobal>
#include "MangoHud.h"
#include "FileSystem.h"
#include "Json.h"
namespace MangoHud {
QString getLibraryString()
{
/*
* Check 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)
*/
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 (QString vkLayer : vkLayerList) {
QString filePath = FS::PathCombine(vkLayer, "MangoHud.json");
if (!QFile::exists(filePath))
continue;
auto conf = Json::requireDocument(filePath, vkLayer);
auto confObject = Json::requireObject(conf, vkLayer);
auto layer = Json::ensureObject(confObject, "layer");
return Json::ensureString(layer, "library_path");
}
return QString();
}
} // namespace MangoHud
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