1 // Copyright 2021 The Dawn Authors 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 #ifndef DAWNNATIVE_XLIBXCBFUNCTIONS_H_ 16 #define DAWNNATIVE_XLIBXCBFUNCTIONS_H_ 17 18 #include "common/DynamicLib.h" 19 #include "dawn_native/Error.h" 20 21 #include "common/xlib_with_undefs.h" 22 23 class DynamicLib; 24 25 namespace dawn_native { 26 27 // A helper class that dynamically loads the x11-xcb library that contains XGetXCBConnection 28 // (and nothing else). This has to be dynamic because this libraries isn't present on all Linux 29 // deployment platforms that Chromium targets. 30 class XlibXcbFunctions { 31 public: 32 XlibXcbFunctions(); 33 ~XlibXcbFunctions(); 34 35 bool IsLoaded() const; 36 37 // Functions from x11-xcb 38 decltype(&::XGetXCBConnection) xGetXCBConnection = nullptr; 39 40 private: 41 DynamicLib mLib; 42 }; 43 44 } // namespace dawn_native 45 46 #endif // DAWNNATIVE_XLIBXCBFUNCTIONS_H_ 47