1 // Copyright 2016 The SwiftShader Authors. All Rights Reserved. 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 #include "libX11.hpp" 16 17 #include "Common/SharedLibrary.hpp" 18 19 #define Bool int 20 21 LibX11exports::LibX11exports(void *libX11, void *libXext) 22 { 23 XOpenDisplay = (Display *(*)(char*))getProcAddress(libX11, "XOpenDisplay"); 24 XGetWindowAttributes = (Status (*)(Display*, Window, XWindowAttributes*))getProcAddress(libX11, "XGetWindowAttributes"); 25 XDefaultScreenOfDisplay = (Screen *(*)(Display*))getProcAddress(libX11, "XDefaultScreenOfDisplay"); 26 XWidthOfScreen = (int (*)(Screen*))getProcAddress(libX11, "XWidthOfScreen"); 27 XHeightOfScreen = (int (*)(Screen*))getProcAddress(libX11, "XHeightOfScreen"); 28 XPlanesOfScreen = (int (*)(Screen*))getProcAddress(libX11, "XPlanesOfScreen"); 29 XDefaultGC = (GC (*)(Display*, int))getProcAddress(libX11, "XDefaultGC"); 30 XDefaultDepth = (int (*)(Display*, int))getProcAddress(libX11, "XDefaultDepth"); 31 XMatchVisualInfo = (Status (*)(Display*, int, int, int, XVisualInfo*))getProcAddress(libX11, "XMatchVisualInfo"); 32 XDefaultVisual = (Visual *(*)(Display*, int screen_number))getProcAddress(libX11, "XDefaultVisual"); 33 XSetErrorHandler = (int (*(*)(int (*)(Display*, XErrorEvent*)))(Display*, XErrorEvent*))getProcAddress(libX11, "XSetErrorHandler"); 34 XSync = (int (*)(Display*, Bool))getProcAddress(libX11, "XSync"); 35 XCreateImage = (XImage *(*)(Display*, Visual*, unsigned int, int, int, char*, unsigned int, unsigned int, int, int))getProcAddress(libX11, "XCreateImage"); 36 XCloseDisplay = (int (*)(Display*))getProcAddress(libX11, "XCloseDisplay"); 37 XPutImage = (int (*)(Display*, Drawable, GC, XImage*, int, int, int, int, unsigned int, unsigned int))getProcAddress(libX11, "XPutImage"); 38 39 XShmQueryExtension = (Bool (*)(Display*))getProcAddress(libXext, "XShmQueryExtension"); 40 XShmCreateImage = (XImage *(*)(Display*, Visual*, unsigned int, int, char*, XShmSegmentInfo*, unsigned int, unsigned int))getProcAddress(libXext, "XShmCreateImage"); 41 XShmAttach = (Bool (*)(Display*, XShmSegmentInfo*))getProcAddress(libXext, "XShmAttach"); 42 XShmDetach = (Bool (*)(Display*, XShmSegmentInfo*))getProcAddress(libXext, "XShmDetach"); 43 XShmPutImage = (int (*)(Display*, Drawable, GC, XImage*, int, int, int, int, unsigned int, unsigned int, bool))getProcAddress(libXext, "XShmPutImage"); 44 } 45 46 LibX11exports *LibX11::operator->() 47 { 48 return loadExports(); 49 } 50 51 LibX11exports *LibX11::loadExports() 52 { 53 static void *libX11 = nullptr; 54 static void *libXext = nullptr; 55 static LibX11exports *libX11exports = nullptr; 56 57 if(!libX11) 58 { 59 if(getProcAddress(RTLD_DEFAULT, "XOpenDisplay")) // Search the global scope for pre-loaded X11 library. 60 { 61 libX11exports = new LibX11exports(RTLD_DEFAULT, RTLD_DEFAULT); 62 libX11 = (void*)-1; // No need to load it. 63 } 64 else 65 { 66 libX11 = loadLibrary("libX11.so"); 67 68 if(libX11) 69 { 70 libXext = loadLibrary("libXext.so"); 71 libX11exports = new LibX11exports(libX11, libXext); 72 } 73 else 74 { 75 libX11 = (void*)-1; // Don't attempt loading more than once. 76 } 77 } 78 } 79 80 return libX11exports; 81 } 82 83 LibX11 libX11; 84
