File indexing completed on 2024-11-10 04:56:35

 /*
     SPDX-FileCopyrightText: 2006 Lubos Lunak <l.lunak@kde.org>
     SPDX-FileCopyrightText: 2012 Martin Gräßlin <mgraesslin@kde.org>
     SPDX-FileCopyrightText: 2021 Vlad Zahorodnii <vlad.zahorodnii@kde.org>
 
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 
 #include "x11_standalone_glxconvenience.h"
 
 #include <algorithm>
 #include <deque>
 
 namespace KWin
 {
 
 GLXFBConfig chooseGlxFbConfig(::Display *display, const int attributes[])
 {
     int configCount = 0;
     GLXFBConfig *configs = glXChooseFBConfig(display, DefaultScreen(display),
                                              attributes, &configCount);
 
     struct FBConfig
     {
         GLXFBConfig config;
         int depth;
         int stencil;
     };
 
     std::deque<FBConfig> candidates;
 
     for (int i = 0; i < configCount; i++) {
         int depth, stencil;
         glXGetFBConfigAttrib(display, configs[i], GLX_DEPTH_SIZE, &depth);
         glXGetFBConfigAttrib(display, configs[i], GLX_STENCIL_SIZE, &stencil);
 
         candidates.emplace_back(FBConfig{configs[i], depth, stencil});
     }
 
     if (configCount > 0) {
         XFree(configs);
     }
 
     std::stable_sort(candidates.begin(), candidates.end(), [](const FBConfig &left, const FBConfig &right) {
         if (left.depth < right.depth) {
             return true;
         }
 
         if (left.stencil < right.stencil) {
             return true;
         }
 
         return false;
     });
 
     return candidates.empty() ? nullptr : candidates.front().config;
 }
 
 } // namespace KWin